Mark43’s mission is to empower communities and their governments with new technologies that improve the safety and quality of life for all. We build powerful, scalable, and elegant software that sets a new standard for the tools upon which our first responders rely. Our users are diverse, and we are therefore committed to embracing diversity of thought and experience within our team.

We are looking for a Mobile Engineering Intern to join our team with a focus on Android development. You will be embedded within our Engineering team and contribute to building mobile applications that are used daily by first responders. This internship offers the opportunity to work on real production features while learning modern Android development practices alongside experienced engineers.

Mark43 is seeking bright and ambitious engineering students for our annual paid summer internship program. We are primarily looking for students graduating in the Spring/Summer of 2027 or who have recently graduated. Our internship program will run from June 9th, 2026 - August 14th, 2026. Interns will be based in our Boston, MA and New York City offices, allowing for hands-on mentorship throughout the program.

What You’ll Do

If you were part of our team, here are some things you would have done last week:

• Built new Android features using Kotlin and modern Android frameworks
• Collaborated with product managers and designers to deliver intuitive, reliable mobile experiences
• Debugged and improved existing code to enhance performance and stability
• Wrote and maintained unit tests to ensure high-quality releases
• Contributed to discussions around mobile architecture and best practices
• Gained exposure to how mobile applications integrate with a larger backend system

What You’ll Need

We’re looking for a student or early-career engineer with experience building Android applications through coursework, internships, or personal projects. This experience is important because you will be contributing to production code and collaborating closely with a fast-paced engineering team.

• Experience developing Android applications using Kotlin 
• A personal, academic, or internship project that demonstrates mobile development skills
• Familiarity with core internet technologies such as REST, JSON, and HTTP
• Basic understanding of mobile architecture and application lifecycle concepts
• A strong foundation in computer science fundamentals such as data structures and algorithms

People who thrive on our team also tend to share the following characteristics:

• Humble, open, and curious, with a willingness to learn and grow from feedback
• Strong sense of ownership and accountability in their work
• Collaborative mindset and enthusiasm for building mission-driven software

Where You’ll Work

Our team is located in Boston, MA, and interns are expected to work from this office to enable in-person mentorship and collaboration throughout the program.

What You Can Expect From Us

• Hands-on mentorship from experienced engineers and technical leaders
• The opportunity to work on mission-critical software that supports first responders
• Exposure to the full lifecycle of building and shipping mobile features
• A collaborative environment with close partnership across engineering, product, and design
• A team that values your ideas, curiosity, and contributions
• Regularly scheduled team events and summer programming, including our engineering Hackathon

Compensation

We feel passionately about equal pay for equal work, and transparency in compensation is one vehicle to achieve that. Compensation for this role is paid an hourly rate of $45 per hour.

Mark43’s mission is to empower communities and their governments with new technologies that improve safety and quality of life for all. We build powerful, scalable, and elegant software that sets a new standard for the tools on which first responders rely. Our users are diverse, and we are committed to embracing diversity of thought and experience within our team.

We are looking for an experienced Lead Software Engineer  - Universal Search to lead the next phase of our 3rd party search and data integration platform at Mark43. In this role, you will own some of the most complex and impactful technical initiatives within the Universal Search domain, building and scaling the systems that power fast, accurate, secure access to critical data across our RMS, CAD, and analytics products. You will drive architecture across service boundaries, shape platform direction with cross-functional partners, and raise the technical bar for distributed systems, real-time indexing, authorization-aware retrieval, and search reliability in support of life-saving decision making for public safety users.

Applicants must be authorized to work for any employer in the country in which the role is being hired. We are unable to sponsor or take over sponsorship of an employment visa at this time.

What You'll Do

If you were on our team last week, you might have:

• Led the technical design and execution of a major expansion of the universal search platform across RMS, CAD, analytics, and adjacent product surfaces, aligning multiple teams on architecture, sequencing, and long-term scalability.
• Defined extensibility patterns and integration approaches for onboarding new internal and third-party data sources, balancing speed of delivery with maintainability, security, and operational excellence.
• Reviewed and elevated designs and pull requests across authorization, index mappings, query paths, and service contracts, giving clear, high-leverage feedback that improved performance, resilience, and developer productivity.
• Coordinated a complex release across multiple services and stakeholders, proactively managing risks, dependencies, and rollout strategy to deliver safely with minimal customer impact.
• Owned the end-to-end delivery of a permission-aware global search capability, driving decisions from discovery and technical design through implementation, launch, observability, and iterative improvement.
• Mentored engineers across the team, coached teammates through ambiguous technical decisions, and actively raised the quality bar on system design, testing strategy, and maintainable code.
• Participated in on-call and support escalation, diagnosed a spike in failed search queries, led Root Cause Analysis (RCA), and drove follow-up improvements to instrumentation, alerting, support readiness, and operational playbooks.

What You'll Need

We are looking for a senior technical leader with 8+ years of professional software engineering experience who can independently lead large, ambiguous initiatives, influence technical decisions beyond their immediate team, and operate with a high degree of ownership in a distributed systems environment.

Must-Haves:

• Proficiency in Java with deep backend engineering experience, along with full-stack skills in React and TypeScript, and a proven track record of writing production-ready, well-tested, maintainable code.
• Experience designing and integrating with third-party and internal systems to support search and data access across multiple product domains.
• Experience with event-driven architectures using tools such as Amazon SNS, Amazon SQS, or Kinesis, including designing for resilience, observability, and iterative evolution.
• Strong experience with AWS services such as Lambda, API Gateway, Step Functions, S3, ECS/EKS, DynamoDB, Aurora/RDS, IAM, and CloudWatch.
• Demonstrated ability to use modern engineering tools, including AI-assisted development workflows where appropriate, to improve delivery velocity while preserving quality, security, and maintainability.
• Strong understanding of indexing strategies, document and schema design, query optimization, and search relevance tradeoffs at scale.
• Comfort leading delivery in CI/CD and Infrastructure-as-Code environments within a serverless-first, microservices-based architecture.
• Excellent written and verbal communication skills, with the ability to influence technical and non-technical stakeholders across a division.
• Demonstrated strength in system design: architectures services and APIs for scale, iterative delivery, and lower long-term cost of change.
• Track record of leading large projects involving multiple engineers, proactively identifying dependencies, managing ambiguity, and delivering high-quality outcomes.
• Ability to drive testing strategy, observability, and operational readiness across multiple areas of the product.
• Proven mentorship and technical leadership; recognized as a go-to engineer for complex debugging, design reviews, and raising engineering standards.

Nice to Have:

• Experience owning platform or product capabilities that span multiple teams, tenants, or domains.
• Familiarity with public safety, regulated domains, or other mission-critical software environments.
• Knowledge of security best practices around authorization, data access, auditability, and query governance.

People Who Thrive in This Role Also Tend to Be:

• Mission-driven - You care deeply about building technology that improves lives and strengthens communities.
• Curious and humble - You seek out different perspectives, ask thoughtful questions, and influence through credibility rather than title.
• Team-oriented - You collaborate effectively across engineering, product, design, infrastructure, and support to deliver durable outcomes.
• Growth-minded - You invest in your own development and actively help level up the engineers around you.
• Calm under uncertainty - You can make sound decisions, manage risk, and keep execution moving even when requirements or conditions are evolving.

Location

Candidates must be located in the United States

Mark43 empowers communities and their governments with technology that improves safety and quality of life. We build modern, resilient software that first responders and public safety agencies depend on in their most critical moments.

We are looking for an experienced Senior Software Engineer – Universal Search to help shape the future of 3^rd party search and data integration at Mark43. In this role, you’ll build and scale the systems behind our universal search platform that powers fast, accurate, and secure access to critical data across our RMS, CAD, and analytics products. You'll work on distributed systems, real-time data indexing, and modern search technologies to support life-saving decision making for our public safety users.

Applicants must be authorized to work for any employer in the country in which the role is being hired. We are unable to sponsor or take over sponsorship of an employment visa at this time.

What You’ll Do

If you were on our team last week, you might have:

• Led end-to-end system design for a new universal search experience across RMS, CAD, and other core components, collaborating with Product and cross-functional engineering teams to ensure a scalable, secure, and user-friendly solution that spans domains.
• Extended platform configurability and connectivity to tap new search data sources using AI-powered coding tools to accelerate development while maintaining high standards for code quality.
• Reviewed pull requests for enhancements to our authorization layer and index mappings in configurations, providing detailed architectural and performance-focused feedback to improve clarity, maintainability, and system resilience.
• Acted as release manager, coordinating deployment logistics, validating release readiness, and ensuring smooth, downtime-free updates to production through clear cross-team communication.
• Owned the end-to-end delivery of a feature supporting permission-aware global search filtering, aligning closely with Product, Infrastructure, and Design from technical feasibility through post-release monitoring.
• Mentored junior engineers, pair-programmed through complex debugging sessions, and coached teammates on prioritizing technical debt while delivering roadmap commitments.
• Participated in the on-call rotation, triaged and resolved a spike in failed search queries, and led a structured Root Cause Analysis (RCA) to drive follow-up improvements in system observability and alerting.

What You’ll Need

We’re looking for a senior backend engineer with at least 4+ years of professional experience who can take ownership, lead initiatives, and operate with autonomy in a distributed systems environment.

Must-Haves:

• Proficiency in Java or TypeScript/JavaScript with strong backend development experience.
• Experience integrating and working with third-party systems to support search functionality across domains.
• Familiarity with event-driven architectures using Amazon SNS, Amazon SQS, or Kinesis.
• Strong experience with AWS services such as Lambda, API Gateway, Step Functions, S3, ECS/EKS, DynamoDB, Aurora/RDS, IAM, and CloudWatch.
• Prior experience using AI engines to increase development velocity and deliver results
• Solid understanding of indexing strategies, document schema design, and query optimization.
• Comfort working with CI/CD workflows and Infrastructure-as-Code (IaC) tools in a serverless-first, microservices-based architecture.
• Excellent written and verbal communication skills.

Nice to Have:

• Prior experience working on multi-tenant platforms or large-scale search products.
• Familiarity with public safety or regulated domains.
• Knowledge of security best practices around data access and query auditing.

People Who Thrive on Our Team Also Tend to Be: 

• Mission-driven – You care deeply about building technology that improves lives and strengthens communities
• Curious and humble – You ask questions before making assumptions and actively seek feedback
• Team-oriented – You value cross-functional collaboration as a key to shipping great software
• Growth-minded – You look for ways to improve every day, even if the path isn’t always clear
• Calm under uncertainty – You’re comfortable navigating ambiguity and solving problems without a roadmap

About Mark43
Mark43 empowers communities and their governments with technology that improves safety and quality of life. We build modern, resilient software that first responders and public safety agencies depend on in their most critical moments. 

Role Overview

We are seeking an experienced Senior Software Engineer – Integrations who will take technical ownership of building and scaling integrations between Mark43’s core platform and mission‑critical third‑party systems. You’ll lead the design, development, and implementation of robust APIs, data pipelines, and messaging layers, ensuring seamless operational data flow for emergency dispatch and response systems. This is a hybrid role requiring at least three days per week in our Manchester office to support strong team collaboration.  

What You’ll Do

• Lead full lifecycle development of integrations that connect the Mark43 platform with external systems such as 911 call centers, state databases, evidence systems, and other key services.  
• Drive architectural decisions and ensure scalable, maintainable solutions across REST APIs, message queues, and event‑driven workflows.  
• Collaborate closely with Product, Engineering, and partner technical teams to define reliable API contracts and integration patterns.  
• Mentor and guide more junior engineers on the team, elevate coding standards, and lead code reviews.
• Contribute to integration testing strategies, observability, and dashboards to monitor operational data flows.
• Champion best practices for performance, security, and error‑handling in distributed systems.
• Participate in sprint planning, roadmap discussions, and technical strategy across the integrations team.

What You’ll Need

• 4+ years of professional software engineering experience, with a strong focus on backend services, distributed systems, and system integrations.
• Proven ability designing and operating APIs, webhooks, or asynchronous messaging systems (e.g., Kafka, queues).  
• Experience with languages and technologies relevant to our stack such as Java, TypeScript/JavaScript, RESTful services, SQL/MySQL, and data pipelines.  
• A solid understanding of integration challenges, including data transformation, schema evolution, retries, and failure management.
• Experience leading technical workstreams and mentoring less senior engineers.
• Strong communication skills and the ability to work with cross‑functional partners.

Nice to Have:

• Prior experience in public safety, government software, or regulated domains.
• Familiarity with CI/CD pipelines, observability tooling, and cloud‑native practices.

Why You’ll Love Working Here

At Mark43 you’ll work on software that directly impacts how first responders protect communities. You’ll enjoy collaborating across disciplines, shaping product integrations that accelerate public safety operations, and mentoring a talented engineering team. Joining our Manchester office fosters a supportive culture rooted in shared mission and innovation. 

Location

This role is based in our Manchester, UK office and follows a hybrid work model. Team members are expected to be in the office at least three days per week to foster strong collaboration and a connected team environment.

Mark43’s mission is to empower communities and their governments with new technologies that improve safety and quality of life for all. We build powerful, scalable, and elegant software that sets a new standard for the tools on which first responders rely. Our users are diverse, and we are committed to embracing diversity of thought and experience within our team.

Due to the nature of our customers, this role requires NPPV3 (Non-Police Personnel Vetting Level 3) + SC clearance. Mark43 will sponsor and support the vetting process for successful candidates.

We’re looking for a Data Migration Engineer (ETL Developer) to join our team. You’ll be at the heart of the customer transition experience, designing and executing complex data migrations that enable agencies to adopt Mark43’s systems with confidence. You’ll work across internal teams and with external partners to help deliver clean, meaningful, and high-quality data into Mark43 products.

This role is a great fit for someone who thrives on solving complex puzzles, is energized by working with public safety data, and enjoys balancing technical depth with customer-facing collaboration.

What you can expect to work on:

• If you were part of our team last week, you would have:

  • Designed and executed a SQL-based ETL process to migrate decades of public safety data from a legacy system into the Mark43 platform
  • Collaborated with our data migration contractors, reviewing technical deliverables and providing guidance to help them succeed
  • Met with a customer’s records management team to understand their legacy data structure and translate it to the Mark43 schema
  • Dug into a uniquely formatted source database to uncover edge cases and ensure data fidelity
  • Worked alongside Mark43 deployment, engineering, and product teams to iterate on and improve our migration tooling and process
  • Balanced project timelines and quality standards while maintaining strong relationships with both internal and external stakeholders

What we expect from you:

We’re looking for a data migration engineer with 2+ years of experience in ETL development or SQL-based data engineering roles. You should have a comprehensive understanding of data migration processes and be comfortable owning projects from discovery through delivery. Your attention to detail and ability to navigate ambiguity will be key to success.

People who thrive on our team also tend to share the following traits:

• Curious and resourceful. You enjoy figuring out how systems work and how to make them work better.
• Clear and collaborative. You communicate technical details to non-technical stakeholders and work well across teams.
• Committed to quality. You take pride in your work and sweat the details.

Qualifications:

• 2+ years of experience in a data migration, ETL development, or SQL development role
• Deep understanding of SQL and relational database design
• Demonstrated experience writing complex SQL scripts
• Ability to analyze and translate legacy data models into new schemas
• Experience managing contractor deliverables is a plus
• Interest in public safety data and the impact of high-quality migrations on customer success
• Prior work with public safety or government systems is a bonus

What you can expect from us:

• Constant collaboration with numerous Mark43 teams, including Global Services, Engineering, and Product
• Building mission critical and socially responsible software to enable first responders to better serve their communities
• A team that respects and embraces your ideas and expertise
• Coworkers that are motivated by pursuing excellence, rather than the prospect of personal gain
• A workplace dedicated to supporting and bettering public safety and government agencies

Location:

This is a remote position for United Kingdom residents only. 

Mark43’s mission is to empower communities and their governments with new technologies that improve the safety and quality of life for all. We build powerful, scalable, and elegant software that sets a new standard for the tools upon which our first responders rely. Our users are diverse, and we are therefore committed to embracing diversity of thought and experience within our team. 

The Mark43 law enforcement platform delivers mission-critical services to agencies across the country. When our systems are unavailable, real-world safety is impacted. As a Platform Engineer, you will take ownership of critical platform capabilities that ensure our systems are reliable, scalable, and equally important: enable engineers to build, deploy, and operate software with speed and confidence. 

In this role, you will operate at the intersection of platform engineering and developer experience (DevEx). You will design and evolve internal platforms as products, reducing friction across the software development lifecycle while maintaining strong standards for reliability, security, and compliance. 

While this role includes opportunities to work on observability systems, prior experience in observability platforms is not required - we value engineers who can learn quickly and apply strong platform fundamentals. 

You’ll use tools like Terraform, Kubernetes, Helm, ArgoCD, and DataDog to build scalable platform primitives and improve developer workflows across the organization. 
 

What you’ll work on 

• Owning and evolving Mark43's internal developer platform, focusing on reliability, scalability, and developer productivity 

• Building self-service platform capabilities (Infrastructure-as-Code modules, GitOps workflows, golden paths, and onboarding templates) 

• Improving developer experience (DevEx) by reducing friction in local development, CI/CD pipelines, deployments, and debugging workflows 

• Designing and optimizing pipeline-as-code systems to improve build performance, reliability, and feedback cycles 

• Driving adoption of GitOps and Infrastructure as Code best practices across the organization 

• Leading initiatives to improve operational excellence, including system reliability, resilience, and incident response 

• Partnering closely with Product, Engineering, and Security teams to align platform capabilities with business needs 

• Owning and delivering large, cross-team platform initiatives that shape how engineers build and operate software at MARK43 

• Participating in a shared on-call rotation to support critical infrastructure 

 What we expect from you 

• 5+ years of experience in Platform Engineering, DevOps, and/or Developer Experience  

• Strong experience with AWS  and cloud-native architectures 

• Deep experience with Kubernetes and containerized systems 

• Strong experience with Infrastructure as Code (Terraform) and GitOps (e.g., ArgoCD) 

• Experience building and optimizing CI/CD systems and pipeline-as-code workflows 

• Demonstrated ability to improve developer experience and platform usability at scale. 

• Strong systems thinking, including tradeoffs between reliability, cost, and developer velocity 

• Understanding of security and compliance best practices in cloud environments 

What sets you apart 

• You take ownership of complex platform problems, from design through adoption 

• You build platforms and abstractions that are adopted across engineering teams 

• You proactively identify gaps in developer workflows and drive improvements  

• You influence technical direction beyond your immediate team 

• You balance developer velocity, reliability, and operational excellence 

• You treat internal platforms as products, with a focus on usability and impact 

Preferred Qualifications 

• Familiarity with defining SLOs, alerting strategies, instrumentation best practices 

• Experience with developer platforms and modern build systems  

• Experience improving local development environments (e.g., devcontainers, Docker workflows, Tilt/Skaffold) 

• Exposure to FinOps practices and cost optimization 

• Experience integrating AI/LLM capabilities into developer workflows, such as: 

• AI-assisted debugging or incident triage 

• Automated incident summaries or developer assistants 

• Knowledge of compliance and data governance requirements in regulated environments 

What you can expect from us 

• A team that values your ideas, ownership, and technical leadership 

• The opportunity to build mission-critical software that directly impacts public safety 

• Career growth in an environment that recognizes and rewards impact 

• A highly collaborative culture across Platform, Product, Engineering, Security, and Technical Services 

Location 

Our team is distributed across the United States, with offices in New York, Boston, and Manchester, UK. We are a remote-friendly company and support candidates working from approved states. 

Compensation 

We believe in equal pay for equal work and transparency in compensation. Total compensation for this role is market competitive, including a base salary range of $140,000–$170,000, plus bonus, equity, and a comprehensive benefits package. 

Senior Software Engineer – AI-Enabled Engineering 

Mark43’s mission is to empower communities and their governments with new technologies that improve the safety and quality of life for all. We build powerful, scalable, and elegant software that sets a new standard for the tools upon which our first responders rely. Our users are diverse, and we are therefore committed to embracing diversity of thought and experience within our team. 

Our platform is already trusted by major public safety agencies across North America—including Boston, D.C., Seattle, and the California Highway Patrol—and we’ve recently expanded into the UK with our first customer overseas. 

Now, we’re entering an exciting new chapter: Mark43 is building a next-generation AI-augmented engineering team. This is a foundational opportunity to help rethink how software is designed, developed, and delivered using intelligent agentic or related tools. 

What You’ll Do 

We’re looking for a Senior Software Engineer to help lead our AI-enabled engineering initiative. You’ll work at the frontier of AI and software development, experimenting with agentic workflows and shaping how AI tools are integrated into every layer of our engineering stack. 

This isn’t just about using AI to autocomplete code—it’s about designing and orchestrating systems of AI agents that can plan, write, review, test, and deploy software collaboratively. In essence, you’ll play a role akin to a tech lead for a team of intelligent coding agents. 

You will: 

• Design multi-agent systems with coding-focused agents (e.g., code writer, reviewer, tester, deployer) 

• Write the prompts, logic, and scaffolding that guide each agent’s behavior 

• Handle tool use, like enabling agents to access the file system, test runners, version control, and internal APIs 

• Evaluate and refine agents’ output, performance, collaboration patterns, and feedback loops 

If you were on the team last week, you might have: 

• Prototyped a new coding assistant workflow using open-source LLMs and internal knowledge bases 

• Led an architecture discussion on agentic build pipelines or automated PR generation 

• Collaborated with a cross-functional team to build a fast, AI-powered interface for internal tooling 

• Helped define the evaluation framework for AI contributions—accuracy, speed, and impact 

• Mentored a teammate on combining TypeScript and AI tools to accelerate UI prototyping 

• Explored best practices for safely and securely integrating generative AI into a public sector codebase 

What You’ll Need 

We’re looking for an experienced software engineer who is eager to build smarter systems by pairing technical expertise with emerging AI tools. You don’t need to be an AI researcher—but you do need hands-on experience applying generative AI tools to real-world development workflows. 

You should have: 

• 5+ years of professional software engineering experience 

• Proficiency with at least part of our stack: Java, TypeScript + React, and MySQL 

• Extensive applied experience with AI-assisted development tooling—whether it’s Cursor, Windsurf, LLM APIs, codegen platforms, vector databases, agentic frameworks like LangChain, or custom-built systems 

• A strong product mindset and interest in building for real-world impact 

• A bias toward experimentation, iteration, and continuous learning 

• Comfort operating in ambiguity and helping define best practices in a rapidly evolving space 

We’re flexible on which tools you’ve used—we care more about your ability to learn, adapt, and creatively apply AI in practical settings than checking a specific tech box.  

People Who Thrive on Our Team Also Tend to Be: 

• Humble, open, and curious. You ask questions and seek to understand before making assumptions 

• Collaborative by default. You believe the best outcomes come from shared knowledge and ownership 

• Mission-driven. You care about building tech that serves the public good 

• Comfortable with uncertainty. You’re energized by open problems and emerging technologies 

• Growth-oriented. You embrace feedback, learn from setbacks, and look for ways to get better every day 

About Mark43 

Mark43 empowers communities and their governments with technology that improves safety and quality of life. We build modern, resilient software that first responders and public safety agencies depend on in their most critical moments.

We are looking for an experienced Senior Software Engineer – Universal Search to help shape the future of 3^rd party search and data integration at Mark43. In this role, you’ll build and scale the systems behind our universal search platform that powers fast, accurate, and secure access to critical data across our RMS, CAD, and analytics products. You'll work on distributed systems, real-time data indexing, and modern search technologies to support life-saving decision making for our public safety users.

Applicants must be authorized to work for any employer in the country in which the role is being hired. We are unable to sponsor or take over sponsorship of an employment visa at this time.

What You’ll Do

If you were on our team last week, you might have:

• Led end-to-end system design for a new universal search experience across RMS, CAD, and other core components, collaborating with Product and cross-functional engineering teams to ensure a scalable, secure, and user-friendly solution that spans domains.
• Extended platform configurability and connectivity to tap new search data sources using AI-powered coding tools to accelerate development while maintaining high standards for code quality.
• Reviewed pull requests for enhancements to our authorization layer and index mappings in configurations, providing detailed architectural and performance-focused feedback to improve clarity, maintainability, and system resilience.
• Acted as release manager, coordinating deployment logistics, validating release readiness, and ensuring smooth, downtime-free updates to production through clear cross-team communication.
• Owned the end-to-end delivery of a feature supporting permission-aware global search filtering, aligning closely with Product, Infrastructure, and Design from technical feasibility through post-release monitoring.
• Mentored junior engineers, pair-programmed through complex debugging sessions, and coached teammates on prioritizing technical debt while delivering roadmap commitments.
• Participated in the on-call rotation, triaged and resolved a spike in failed search queries, and led a structured Root Cause Analysis (RCA) to drive follow-up improvements in system observability and alerting.

What You’ll Need

We’re looking for a senior backend engineer with at least 4+ years of professional experience who can take ownership, lead initiatives, and operate with autonomy in a distributed systems environment.

Must-Haves:

• Proficiency in Java or TypeScript/JavaScript with strong backend development experience.
• Experience integrating and working with third-party systems to support search functionality across domains.
• Familiarity with event-driven architectures using Amazon SNS, Amazon SQS, or Kinesis.
• Strong experience with AWS services such as Lambda, API Gateway, Step Functions, S3, ECS/EKS, DynamoDB, Aurora/RDS, IAM, and CloudWatch.
• Prior experience using AI engines to increase development velocity and deliver results
• Solid understanding of indexing strategies, document schema design, and query optimization.
• Comfort working with CI/CD workflows and Infrastructure-as-Code (IaC) tools in a serverless-first, microservices-based architecture.
• Excellent written and verbal communication skills.

Nice to Have:

• Prior experience working on multi-tenant platforms or large-scale search products.
• Familiarity with public safety or regulated domains.
• Knowledge of security best practices around data access and query auditing.

People Who Thrive on Our Team Also Tend to Be:

• Mission-driven – You care deeply about building technology that improves lives and strengthens communities
• Curious and humble – You ask questions before making assumptions and actively seek feedback
• Team-oriented – You value cross-functional collaboration as a key to shipping great software
• Growth-minded – You look for ways to improve every day, even if the path isn’t always clear
• Calm under uncertainty – You’re comfortable navigating ambiguity and solving problems without a roadmap

Location:

This role is based in our Manchester, UK office and follows a hybrid work model. Team members are expected to be in the office at least three days per week to foster strong collaboration and a connected team environment.

Mark43’s mission is to empower communities and their governments with new technologies that improve the safety and quality of life for all. We build powerful, scalable, and elegant software that sets a new standard for the tools upon which our first responders rely. Our users are diverse, and we are therefore committed to embracing diversity of thought and experience within our team. 

We’re seeking experienced and innovative front-end engineers who have shipped at enterprise scale and released commercial software to enterprise customers.  Come and help build the next generation of cloud based public safety software. As a senior member of the Mark43 team, you’ll take ownership of products and features from start to finish, and become a knowledge resource that your teammates can trust and rely on. You’ll build robust solutions to our unique problems of scale, security, and reliability. We heavily leverage technologies like Java, React, SQL, Redis, and Elasticsearch and enjoy participating in the open source community. As an engineer here, you'll have the freedom to implement your own solutions and have a meaningful impact on our product.  

As a part of our CAD team, you'll work on designing technical solutions that enable our First Responder customers to have the most accurate and real time locations possible. 

What You’ll Do

If you were a part of our team, here are some things you would have done last week:  

• Spent time working with a Product Manager to understand requirements for a new feature for locations services.
• Building features using popular technologies including but not limited to: React and Typescript
• Improve architectural strategy of a front-end or backend area of the product to meet higher velocity needs created by our growing customer base.  
• Reviewed code submitted by other software engineers, and submitted your own code for review as part of our pull-request deployment process 
• Spent time meeting with a Product Designer to explain technical constraints for a specific feature 
• Collaborating with design and product teams to understand and document feature requirements 
• Written clear, concise technical documentation to accompany your code that your teammates will trust 
• Spent time testing out a new technology or taking part in a discussion on ways to improve our code base and engineering practices  
• Nurturing an engineering culture that cares deeply about the quality of the code we write, while still working quickly to bring our technology to as many departments as possible 

What You’ll Need 

We are seeking engineers with at least 4 years of professional experience using React and Typescript in production. You should be comfortable utilizing agile development and thoroughly testing your own code. Our codebase is large and complex, so we expect you to write clear, concise code and intuitive documentation to help other engineers understand your contributions.  

• Deep understanding of databases, automated testing, Agile methodologies 
• Deep experience designing and building out infrastructure for complex cloud-based software applications, preferably hosted in AWS or Azure 
• Knowledge of or prior experience with microservices architecture 
• Extensive knowledge of JavaScript and its many frameworks, HTML, CSS, and an interest in testing out new FE technologies 
• Knowledge of web architecture concepts including HTTP and REST 

People who thrive on our team also tend to share the following characteristics:  

• Humble, open, and curious. You recognize that no one is perfect and you will be wrong, and you’re excited about listening and learning being a big part of your job. 
• Attentive, active listeners. You’re interested in what others have to say and illustrate your interest with your actions. 
• Resilience. You do not shy away from challenging work and you proactively help your team solve problems. 
• Enthusiastic collaborators. You understand that the best outcomes are achieved through shared ownership, and seek to spread knowledge and expand participation rather than restrict it. 
• Comfortable with uncertainty. You know that sometimes problems and situations can’t be simplified or fully understood, and are at ease working within this type of haziness. 
• Passionate about personal growth. You view mistakes as opportunities for learning, and want to grow as a designer, colleague, and person. 
• Eager to help others. You look for ways to provide support for more junior members of the team and develop cooperative working relationships 

We are looking for individuals to work in our Boston, MA location on a hybrid model. 

We feel passionately about equal pay for equal work, and transparency in compensation is one vehicle to achieve that. Total compensation for this role is market competitive, including a target base annual salary range of $130,000- $160,000, plus bonus opportunity, company stock options, and a full benefits package, including health insurance, paid time off, and a 401k plan. Please be aware that a candidates experience level and geographic location will be used to determine a competitive base salary. The higher end of this range is applicable to experienced candidates in the New York metro and Bay Area. 

Mark43’s mission is to empower communities and their governments with new technologies that improve the safety and quality of life for all. We build powerful, scalable, and elegant software that sets a new standard for the tools upon which our first responders rely. Our users are diverse, and we are therefore committed to embracing diversity of thought and experience within our team. 

We’re seeking experienced and innovative senior software engineers who have shipped at enterprise scale and released commercial software to enterprise customers.  Come and help build the next generation of cloud based public safety software. As a senior member of the Mark43 team, you’ll take ownership of products and features from start to finish, and become a knowledge resource that your teammates can trust and rely on. You’ll build robust server side solutions to our unique problems of scale, security, and reliability. We heavily leverage technologies like React, Typescript, Java, SQL, Redis, and Elasticsearch  and enjoy participating in the open source community. As an engineer here, you'll have the freedom to implement your own solutions and have a meaningful impact on our product. We will depend on your strong systems architecture design experience to offer insight into technical decision-making in building our products from the ground up. This role offers tremendous career growth opportunities on either a management or Technical Lead track.  

What You’ll Do 

If you were a part of our team, here are some things you would have done last week:  

• Spent time working with a Product Manager to understand requirements for a new feature
• Building features using popular technologies including but not limited to: Java, SQL, Redis, and Elasticsearch; 
• Participate in on-call rotation and strive to continuously improve Mark43's customer experience. 
• End to end technical ownership of a product or subset of a product 
• Improve architectural strategy of a front-end or backend area of the product to meet higher velocity needs created by our growing customer base.  
• Reviewed code submitted by other software engineers, and submitted your own code for review as part of our pull-request deployment process 
• Spent time meeting with a Product Designer to explain technical constraints for a specific feature 
• Collaborating with design and product teams to understand and document feature requirements 
• Written clear, concise technical documentation to accompany your code that your teammates will trust 
• Spent time testing out a new technology or taking part in a discussion on ways to improve our code base and engineering practices  
• Nurturing an engineering culture that cares deeply about the quality of the code we write, while still working quickly to bring our technology to as many departments as possible 

What You’ll Need 

We are seeking engineers with at least 6 years of professional experience using Java, .NET, or other server side languages in production. You should be comfortable utilizing agile development and thoroughly testing your own code. Our codebase is large and complex, so we expect you to write clear, concise code and intuitive documentation to help other engineers understand your contributions. Experience developing features built for the cloud, as well as the ability to delve into the front end stack (Javascript, ReactJS) is a big plus! 

• Deep understanding of databases, automated testing, Agile methodologies 
• Proficiency building and managing RESTful APIs 
• Strong DevOps experience and be able to manage a product in the Cloud 
• Deep experience designing and building out infrastructure for complex cloud-based software applications, preferably hosted in AWS or Azure 
• Proven experience in building for scale in a B2B environment 
• Knowledge of or prior experience with microservices architecture 
• Commitment to providing support for more junior members of the team and developing cooperative working relationships 
• Leaning in to contribute to the company outside your role - our engineers have written blog posts, attended events, and helped grow our team 
• Experience in building low-code platform is a huge plus 

People who thrive on our team also tend to share the following characteristics: 

• Humble, open, and curious. You recognize that no one is perfect and you will be wrong, and you’re excited about listening and learning being a big part of your job. 
• Attentive, active listeners. You’re interested in what others have to say and illustrate your interest with your actions. 
• Resilience. You do not shy away from challenging work and you proactively help your team solve problems. 
• Enthusiastic collaborators. You understand that the best outcomes are achieved through shared ownership, and seek to spread knowledge and expand participation rather than restrict it. 
• Comfortable with uncertainty. You know that sometimes problems and situations can’t be simplified or fully understood, and are at ease working within this type of haziness. 
• Passionate about personal growth. You view mistakes as opportunities for learning, and want to grow as a designer, colleague, and person. 
• Eager to help others. You look for ways to provide support for more junior members of the team and develop cooperative working relationships 

We feel passionately about equal pay for equal work, and transparency in compensation is one vehicle to achieve that. Total compensation for this role is market competitive, including a target base annual salary range of $170,000- $210,000, plus bonus opportunity, company stock options, and a full benefits package, including health insurance, paid time off, and a 401k plan. Please be aware that a candidates experience level and geographic location will be used to determine a competitive base salary. The higher end of this range is applicable to experienced candidates in the New York metro and Bay Area. 

Our CAD engineering team is based in Boston, MA and operates on a 3 day hybrid schedule.

At Mark43, our mission is to empower communities and their governments with new technologies that improve the safety and quality of life for all. We build powerful, scalable, and elegant software that sets a new standard for the tools upon which first responders rely. Our users are diverse, and we are therefore committed to embracing diversity of thought and experience within our team.

We are looking for a Lead Data Engineer to join our team. This is a high-impact, strategic role focused equally on technical leadership and hands-on execution. You will play a critical role in shaping the future of our data infrastructure, while mentoring teammates and partnering cross-functionally to drive analytics innovation across the company.

What You'll Do: 

If you were part of our team, here are some things you would have done last week:

• Mentored fellow data engineers through code reviews, architectural decisions, and technical planning sessions
• Led the design and implementation of scalable, secure data pipelines using dbt, Apache Airflow, and SQL
• Collaborated with Product Managers to launch new customer-facing analytics capabilities
• Partnered with DevOps to optimize cloud infrastructure with Terraform and AWS-managed services
• Built and maintained integrations with MySQL, SQL Server, and OLAP systems to support product insights and internal operations
• Participated in our on-call rotation to ensure platform reliability and performance
• Contributed to the hiring, onboarding, and professional development of the Data Engineering team
• Explored and evaluated new tools—including AI-assisted coding platforms like Claude and Windsurf—to improve engineering workflows

What You'll Need: 

• Strong proficiency in SQL and Python
• Hands-on experience with AWS infrastructure and data services
• Familiarity with MySQL, SQL Server, and OLAP databases
• Experience using Terraform or other infrastructure-as-code tools
• Expertise in modern data tooling, particularly dbt and Apache Airflow
• Operating reliable and performant pipelines in production environments
• Building data platforms that support both internal stakeholders and external customers

Compensation: 

We believe in equal pay for equal work, and transparency in compensation is a core value. Total compensation for this role is market competitive, including a target base annual salary range of $170,000 - $210,000, plus bonus opportunity, company stock options, and a full benefits package, including health insurance, paid time off, and a 401k. Please be aware that a candidates experience level and geographic location will be used to determine a competitive base salary. The higher end of this range is applicable to experienced candidates in the New York metro and Bay Area. 

Mark43’s mission is to empower communities and their governments with technologies that improve the safety and quality of life for all. We build modern, resilient software that first responders and public safety professionals depend on in their most critical moments. From dispatching emergency services to filing reports that shape public policy, our work directly impacts how governments serve their communities—especially those who need it most.

We are looking for a Software Engineer who is excited to solve real-world problems with tangible societal impact. You’ll help build core systems used by public safety agencies around the world, and explore how emerging tools like AI-assisted development can make our engineering team faster, safer, and smarter.

What You’ll Do

As a member of our engineering team, you’ll ship features that help first responders save lives, navigate emergencies, and keep their communities safe. You’ll also help us explore new ways to deliver that impact more efficiently by thoughtfully integrating AI-assisted workflows into our development process.

If you were on the team last week, you might have:

• Built or improved a workflow used by frontline police officers or dispatchers in our cloud-native platform

• Used tools like Cursor or GitHub Copilot to speed up implementation while maintaining high quality

• Partnered with teammates across engineering, product, and design to deliver a new feature end-to-end

• Experimented with using internal AI tools to automate a repetitive coding task or accelerate test coverage

• Fixed a bug affecting real users or improved the resilience of a high-uptime service

• Shared feedback in a retro or mentored a teammate through a tough technical decision

What You’ll Need

We’re looking for a thoughtful and driven software engineer with 1+ years of professional experience. You care about writing clean, maintainable code—and you’re motivated by the idea that your work can help people in the moments they need it most. While you don’t need deep AI expertise, we value a genuine interest in using AI tools to make development more effective.

You should have:

• 1+ years of professional software engineering experience or a Computer Science Degree and Internship Experience 

• Experience with at least part of our stack: Java, Javascript, TypeScript + React, and MySQL (You will be asked to complete a coderpad test in Java and Javascript) 

• Curiosity and comfort with modern development tools, including AI-assisted platforms like GitHub Copilot, Cursor, or LLM APIs

• A collaborative mindset and strong communication skills

• A balance of pragmatism and technical rigor

• A desire to grow quickly on a high-impact, mission-oriented team

People Who Thrive on Our Team Also Tend to Be:

• Mission-driven. You care about building technology that serves the public good and delivers real value to people who rely on it

• Humble, open, and curious. You ask questions before making assumptions, and you value others’ perspectives

• Collaborative by default. You see teamwork as the key to strong engineering and impactful outcomes

• Growth-oriented. You embrace feedback, learn from setbacks, and aim to improve a little every day

• Comfortable with uncertainty. You’re excited to help define best practices in a fast-evolving space

Location

This role is based in our Manchester, UK office and follows a hybrid work model. Team members are expected to be in the office at least three days per week to foster strong collaboration and a connected team environment.

Mark43’s mission is to empower communities and their governments with new technologies that improve the safety and quality of life for all. We build powerful, scalable, and elegant software that sets a new standard for the tools upon which our first responders rely. Our users are diverse, and we are therefore committed to embracing diversity of thought and experience within our team. 

Mark43 is seeking an enthusiastic and people-focused Engineering Manager to lead development for our suite of public safety software. As an Engineering Manager, you’ll lead a team of 3-7 engineers building new features and maintaining happy customers. Our engineers will thrive and grow when supported by an inspiring, empathetic, and technically adept people manager. You will be responsible for ensuring your team meets commitments and deadlines, as well as personally helping engineers level up and become stronger contributors. 

Our ideal candidate is passionate about helping their team grow as software engineers and measuring success. We will trust you to balance speed of execution with quality and technical debt, to build a product that delights our users. We also expect equal levels of enthusiasm for recruiting and solving challenging technical problems with your team.

What you can expect to work on:

• Coaching and developing your direct reports to improve both technical and non-technical skills
• Advocating on your team’s behalf to manage their collective workload and work-life balance, while still maintaining  high standards of work and respecting deadlines
• Working closely with our Engineering Director and VP to set longer term strategic direction for your team and our product suite
• Driving execution for your team by owning planning, prioritization, and delivery, while continuously removing obstacles and improving how work gets done.
• Owning your team’s outcomes end-to-end. When plans break, priorities shift, or production issues arise, you
  don’t wait for permission to act. You lean in, help unblock the team, and ensure the right
  thing gets done

What we expect from you:

• A strong desire to help others succeed: we hope you LOVE being a people manager and you are most fulfilled by supporting the growth and efficacy of the team you lead
• A record of leveling up your reports and providing individuals with meaningful opportunities to flourish in their role
• While this is a people-first role, we value managers who are willing to roll up their sleeves, when necessary, whether that means contributing technically, helping debug a tough issue, or stepping in during critical moments
• Experience with hiring, including sourcing candidates, interviewing candidates, participating in conferences and events, and onboarding for new employees
• A solid track record of delivering projects and collaborating with leaders across the organization: including Engineering, Product, Design, and Operations
• Previous experience as a software engineer and up to date knowledge of modern software languages, frameworks, and developer tools
• 2+ years in a software engineering management position, with experience managing at least 4 direct reports

What you can expect from us:

• Constant collaboration with numerous Mark43 teams, including design, product management, QA, and customer success
• Building mission critical and socially responsible software to enable first responders to better serve their communities
• A team that respects and embraces your ideas and expertise
• Coworkers that are motivated by pursuing excellence, rather than the prospect of personal gain
• A workplace dedicated to supporting and bettering public safety and government agencies
• Leadership and career growth opportunities which could set you on a path toward future founder roles in your career

We feel passionately about equal pay for equal work, and transparency in compensation is one vehicle to achieve that. Total compensation for this role is market competitive, including a target base annual salary range of $170,000-$200,000, plus bonus opportunity, company stock options, and a full benefits package, including health insurance, and paid time off. Please be aware that a candidates experience level and geographic location will be used to determine a competitive base salary. The higher end of this range is applicable to experienced candidates in the New York metro and Bay Area. 

Mark43’s mission is to empower communities and their governments with new technologies that improve the safety and quality of life for all. We build powerful, scalable, and elegant software that sets a new standard for the tools upon which our first responders rely. Our users are diverse, and we are therefore committed to embracing diversity of thought and experience within our team. 

Mark43 is seeking an enthusiastic and people-focused Engineering Manager to lead development for our suite of public safety software. As an Engineering Manager, you’ll lead a team of 10-15 engineers building new features and maintaining happy customers. Our engineers will thrive and grow when supported by an inspiring, empathetic, and technically adept people manager. You will be responsible for ensuring your team meets commitments and deadlines, as well as personally helping engineers level up and become stronger contributors. 

Our ideal candidate is passionate about helping their team grow as software engineers and measuring success. We will trust you to balance speed of execution with quality and technical debt, to build a product that delights our users. We also expect equal levels of enthusiasm for recruiting and solving challenging technical problems with your team.

What you can expect to work on:

• Coaching and developing your direct reports to improve both technical and non-technical skills
• Advocating on your team’s behalf to manage their collective workload and work-life balance, while still maintaining  high standards of work and respecting deadlines
• Working closely with our Engineering Director and VP to set longer term strategic direction for your team and our product suite
• Maintaining and improving internal processes to help increase the efficiency, happiness, and effectiveness of your team
• Serving as a technical project manager for your team: scheduling, release planning, managing backlog, and removing roadblocks that may arise

What we expect from you:

• A strong desire to help others succeed: we hope you LOVE being a people manager and you are most fulfilled by supporting the growth and efficacy of the team you lead
• A record of leveling up your reports and providing individuals with meaningful opportunities to flourish in their role
• Experience with hiring, including sourcing candidates, interviewing candidates, participating in conferences and events, and onboarding for new employees
• A solid track record of delivering projects and collaborating with leaders across the organization: including Engineering, Product, Design, and Operations
• Previous experience as a software engineer and up to date knowledge of modern software languages, frameworks, and developer tools
• 2+ years in a software engineering management position, with experience managing at least 4 direct reports

What you can expect from us:

• Constant collaboration with numerous Mark43 teams, including design, product management, QA, and customer success
• Building mission critical and socially responsible software to enable first responders to better serve their communities
• A team that respects and embraces your ideas and expertise
• Coworkers that are motivated by pursuing excellence, rather than the prospect of personal gain
• A workplace dedicated to supporting and bettering public safety and government agencies
• Leadership and career growth opportunities which could set you on a path toward future founder roles in your career

We feel passionately about equal pay for equal work, and transparency in compensation is one vehicle to achieve that. Total compensation for this role is market competitive, including a target base annual salary range of $180,000-$220,000, plus bonus opportunity, company stock options, and a full benefits package, including health insurance, paid time off, and a 401k with a company match. Please be aware that a candidates experience level and geographic location will be used to determine a competitive base salary. The higher end of this range is applicable to experienced candidates in the New York metro and Bay Area. 

Our CAD engineering team is based in Boston, MA and operates on a 3 day hybrid schedule.

About Mark43
Mark43 empowers communities and their governments with technology that improves safety and quality of life. We build modern, resilient software that first responders and public safety agencies depend on in their most critical moments.

Role Overview
We are seeking a Software Engineer to join our Integrations team, where you’ll help build and scale the mission-critical systems that connect the Mark43 platform to a wide range of public safety tools and services. From 911 call centers to state databases, your work will ensure that vital operational data moves seamlessly and reliably across agencies and jurisdictions. This is a backend-focused role working on APIs, data pipelines, and event-driven systems.

This position is remote within the United States, with optional access to our offices in New York or Boston. Mark43 is a remote-friendly workplace with a collaborative and mission-driven culture.

What You’ll Do
If you were part of our team last week, you might have:

• Developed a new backend service to sync data between Mark43’s platform and a partner evidence management system

• Worked with a product manager to define API requirements for a state reporting integration

• Participated in a code review for a teammate’s work on a Kafka-based message pipeline

• Added error handling and observability to improve reliability of a key data feed

• Joined a team sync to plan out upcoming roadmap priorities and technical spikes

What You’ll Need
We’re looking for a backend-leaning Software Engineer with 2+ years of professional experience building production systems. This level of experience ensures you're comfortable working in an agile team, can ship well-tested code, and are ready to grow your design and architectural skills in a supportive environment.

Ideal candidates will bring:

• Proficiency with backend programming languages like Java

• Experience working with REST APIs, messaging systems (e.g., Kafka, RabbitMQ), or distributed data flows

• Familiarity with relational databases and data modeling

• A collaborative mindset and the ability to work with engineers, product managers, and external technical teams

• A passion for writing maintainable code and solving real-world problems that have critical impact

Traits for Success

• Curious and resourceful — You enjoy digging into technical problems and figuring out how complex systems fit together

• Team-oriented — You communicate clearly and enjoy pairing, reviewing code, and learning from peers

• Mission-driven — You care about building technology that directly supports public safety and community well-being

Why You’ll Love Working Here
At Mark43, you’ll build technology that directly supports emergency responders and public safety agencies across the country. You’ll work on meaningful problems, learn from experienced teammates, and help shape the infrastructure that keeps communities safe. We’re a company that values growth, ownership, and trust—and we’re excited to support your journey as an engineer.

Location
This role is remote-friendly within the United States, with optional access to our offices in New York or Boston. Applicants must reside in a state where Mark43 is registered to hire.

Mark43’s mission is to empower communities and their governments with new technologies that improve the safety and quality of life for all. We build powerful, scalable, and elegant software that sets a new standard for the tools upon which our first responders rely. Our users are diverse, and we are therefore committed to embracing diversity of thought and experience within our team. 

We’re seeking experienced and innovative full stack software engineers who have shipped at enterprise scale and released commercial software to enterprise customers.  Come and help build the next generation of cloud based public safety software. As a member of the Mark43 team, you’ll take ownership of products and features from start to finish, and become a knowledge resource that your teammates can trust and rely on. You’ll build robust solutions to our unique problems of scale, security, and reliability. We heavily leverage technologies like Java, React, SQL, Redis, and Elasticsearch and enjoy participating in the open source community. As an engineer here, you'll have the freedom to implement your own solutions and have a meaningful impact on our product.  

What You’ll Do

If you were a part of our team, here are some things you would have done last week:  

• Spent time working with a Product Manager to understand requirements for a new feature.
• Building features using popular technologies including but not limited to: Java, React, SQL, Redis, and Elasticsearch; 
• Improve architectural strategy of a front-end or backend area of the product to meet higher velocity needs created by our growing customer base.  
• Reviewed code submitted by other software engineers, and submitted your own code for review as part of our pull-request deployment process 
• Spent time meeting with a Product Designer to explain technical constraints for a specific feature 
• Collaborating with design and product teams to understand and document feature requirements 
• Written clear, concise technical documentation to accompany your code that your teammates will trust 
• Spent time testing out a new technology or taking part in a discussion on ways to improve our code base and engineering practices  
• Nurturing an engineering culture that cares deeply about the quality of the code we write, while still working quickly to bring our technology to as many departments as possible 

What You’ll Need 

We are seeking engineers with at least 8 years of professional experience using Java and React in production. You should be comfortable utilizing agile development and thoroughly testing your own code. Our codebase is large and complex, so we expect you to write clear, concise code and intuitive documentation to help other engineers understand your contributions.  

• Deep understanding of databases, automated testing, Agile methodologies 
• Proficiency building and managing RESTful APIs 
• Deep experience designing and building out infrastructure for complex cloud-based software applications, preferably hosted in AWS or Azure 
• Knowledge of or prior experience with microservices architecture 
• Extensive knowledge of JavaScript and its many frameworks, HTML, CSS, and an interest in testing out new FE technologies 
• Knowledge of web architecture concepts including HTTP and REST 

People who thrive on our team also tend to share the following characteristics:  

• Humble, open, and curious. You recognize that no one is perfect and you will be wrong, and you’re excited about listening and learning being a big part of your job. 
• Attentive, active listeners. You’re interested in what others have to say and illustrate your interest with your actions. 
• Resilience. You do not shy away from challenging work and you proactively help your team solve problems. 
• Enthusiastic collaborators. You understand that the best outcomes are achieved through shared ownership, and seek to spread knowledge and expand participation rather than restrict it. 
• Comfortable with uncertainty. You know that sometimes problems and situations can’t be simplified or fully understood, and are at ease working within this type of haziness. 
• Passionate about personal growth. You view mistakes as opportunities for learning, and want to grow as a designer, colleague, and person. 
• Eager to help others. You look for ways to provide support for more junior members of the team and develop cooperative working relationships 

We feel passionately about equal pay for equal work, and transparency in compensation is one vehicle to achieve that. Total compensation for this role is market competitive, including a target base annual salary range of $155,000-$215,00 plus bonus opportunity, company stock options, and a full benefits package, including health insurance, paid time off, and a 401k plan.

Senior Software Engineer – AI-Enabled Engineering 

Mark43’s mission is to empower communities and their governments with new technologies that improve the safety and quality of life for all. We build powerful, scalable, and elegant software that sets a new standard for the tools upon which our first responders rely. Our users are diverse, and we are therefore committed to embracing diversity of thought and experience within our team. 

Our platform is already trusted by major public safety agencies across North America—including Boston, D.C., Seattle, and the California Highway Patrol—and we’ve recently expanded into the UK with our first customer overseas. 

Now, we’re entering an exciting new chapter: Mark43 is building a next-generation AI-augmented engineering team. This is a foundational opportunity to help rethink how software is designed, developed, and delivered using intelligent agentic or related tools. 

What You’ll Do 

We’re looking for a Senior Software Engineer to help lead our AI-enabled engineering initiative. You’ll work at the frontier of AI and software development, experimenting with agentic workflows and shaping how AI tools are integrated into every layer of our engineering stack. 

This isn’t just about using AI to autocomplete code—it’s about designing and orchestrating systems of AI agents that can plan, write, review, test, and deploy software collaboratively. In essence, you’ll play a role akin to a tech lead for a team of intelligent coding agents. 

You will: 

• Design multi-agent systems with coding-focused agents (e.g., code writer, reviewer, tester, deployer) 

• Write the prompts, logic, and scaffolding that guide each agent’s behavior 

• Handle tool use, like enabling agents to access the file system, test runners, version control, and internal APIs 

• Evaluate and refine agents’ output, performance, collaboration patterns, and feedback loops 

If you were on the team last week, you might have: 

• Prototyped a new coding assistant workflow using open-source LLMs and internal knowledge bases 

• Led an architecture discussion on agentic build pipelines or automated PR generation 

• Collaborated with a cross-functional team to build a fast, AI-powered interface for internal tooling 

• Helped define the evaluation framework for AI contributions—accuracy, speed, and impact 

• Mentored a teammate on combining TypeScript and AI tools to accelerate UI prototyping 

• Explored best practices for safely and securely integrating generative AI into a public sector codebase 
• Participated in our on call rotation 

What You’ll Need 

We’re looking for an experienced software engineer who is eager to build smarter systems by pairing technical expertise with emerging AI tools. You don’t need to be an AI researcher—but you do need hands-on experience applying generative AI tools to real-world development workflows. 

You should have: 

• 5+ years of professional software engineering experience 

• Proficiency with at least part of our stack: Java, TypeScript + React, and MySQL 

• Extensive applied experience with AI-assisted development tooling—whether it’s Cursor, Windsurf, LLM APIs, codegen platforms, vector databases, agentic frameworks like LangChain, or custom-built systems 

• A strong product mindset and interest in building for real-world impact 

• A bias toward experimentation, iteration, and continuous learning 

• Comfort operating in ambiguity and helping define best practices in a rapidly evolving space 

We’re flexible on which tools you’ve used—we care more about your ability to learn, adapt, and creatively apply AI in practical settings than checking a specific tech box.  

People Who Thrive on Our Team Also Tend to Be: 

• Humble, open, and curious. You ask questions and seek to understand before making assumptions 

• Collaborative by default. You believe the best outcomes come from shared knowledge and ownership 

• Mission-driven. You care about building tech that serves the public good 

• Comfortable with uncertainty. You’re energized by open problems and emerging technologies 

• Growth-oriented. You embrace feedback, learn from setbacks, and look for ways to get better every day 

Mark43’s mission is to empower communities and their governments with new technologies that improve the safety and quality of life for all. We build powerful, scalable, and elegant software that sets a new standard for the tools our first responders rely on. Our users are diverse, and we are therefore committed to embracing diversity of thought and experience within our team. 

We are seeking experienced and innovative Staff Engineers who have shipped software at an enterprise scale to come and help build the next generation of cloud-based public safety software. As a senior member of the Mark43 team, you’ll take ownership of projects and features from start to finish and be a knowledgeable resource to your teammates. You’ll build robust server-side solutions to our unique problems of scale, security, and reliability. We heavily leverage technologies like Java, MySQL, Redis, and Elasticsearch and enjoy participating in the open source community. As an engineer here, you'll have the freedom to implement your own solutions and have a meaningful impact on our product. We will depend on your strong systems architecture design and technical decision-making in building our products from the ground up. This role offers tremendous career growth opportunities on either a management or Technical Lead track.  

What You’ll Do 

If you were a part of our team, here are some things you would have done last week:  

• Worked with a Product Manager to understand requirements for a new feature  
• Built and deployed features using popular technologies including Java, MySQL, Redis, and Elasticsearch 
• Improved the architecture of a back-end area of the platform to meet the velocity needs of our growing customer base 
• Met with a Product Designer to explain technical constraints for a specific feature 
• Written clear, concise technical documentation to accompany your code 
• Tested a new technology or took some action to improve our codebase and engineering practices 
• Nurtured an engineering culture that cares deeply about both code quality and delivering quickly for our customers 

What You’ll Need 

We are seeking engineers with at least 10 years of professional experience using Java, .NET, or other server-side languages in production. You should be comfortable practicing Agile development and thoroughly testing your own code. Our codebase is large and complex, so we expect you to write clean code and concise documentation to help other engineers understand your contributions. Experience developing features for the cloud, as well as the ability to delve into the front-end stack (JavaScript, ReactJS), is a big plus! 

The following types of experience are highly important: 

• Deep understanding of databases, automated testing, and Agile methodologies 
• Proficiency building and managing RESTful APIs 
• Deep experience designing and building out infrastructure for complex cloud-based software applications, preferably hosted in AWS or Azure 
• Knowledge of, or experience with microservices architecture 
• Commitment to providing support for more junior members of the team and developing cooperative working relationships 
• Leaning in to contribute to the company outside your role — our engineers have written blog posts, attended events, and helped grow our team 

People who thrive on our team also tend to share the following characteristics: 

• Humble, open, and curious. You recognize that no one is perfect, and you’re excited about listening and learning. 
• Attentive, active listeners. You’re interested in what others have to say and illustrate your interest with your actions. 
• Resilience. You do not shy away from challenging work, and you proactively help your team solve problems. 
• Enthusiastic collaborators. You understand that the best outcomes are achieved through shared ownership and seek to spread knowledge and expand participation rather than restrict it. 
• Comfortable with uncertainty. You know that sometimes problems can’t be simplified or fully understood and are at ease working within this type of haziness. 
• Passionate about personal growth. You view mistakes as opportunities for learning, and want to grow as a designer, colleague, and person. 

We feel passionately about equal pay for equal work, and transparency in compensation is one vehicle to achieve that. Total compensation for this role is market competitive, including a target base annual salary range of $180,000 - $240,000, plus bonus opportunity, company stock options, and a full benefits package, including health insurance, paid time off, and a 401k plan. Please note that the higher end of this range will be reserved for candidates with appropriate experience who reside in high cost labor markets. 

Senior Software Engineer – AI-Enabled Engineering 

Mark43’s mission is to empower communities and their governments with new technologies that improve the safety and quality of life for all. We build powerful, scalable, and elegant software that sets a new standard for the tools upon which our first responders rely. Our users are diverse, and we are therefore committed to embracing diversity of thought and experience within our team. 

Our platform is already trusted by major public safety agencies across North America—including Boston, D.C., Seattle, and the California Highway Patrol—and we’ve recently expanded into the UK with our first customer overseas. 

Now, we’re entering an exciting new chapter: Mark43 is building a next-generation AI-augmented engineering team. This is a foundational opportunity to help rethink how software is designed, developed, and delivered using intelligent agentic or related tools. 

What You’ll Do 

We’re looking for a Senior Software Engineer to help lead our AI-enabled engineering initiative. You’ll work at the frontier of AI and software development, experimenting with agentic workflows and shaping how AI tools are integrated into every layer of our engineering stack. 

This isn’t just about using AI to autocomplete code—it’s about designing and orchestrating systems of AI agents that can plan, write, review, test, and deploy software collaboratively. In essence, you’ll play a role akin to a tech lead for a team of intelligent coding agents. 

You will: 

• Design multi-agent systems with coding-focused agents (e.g., code writer, reviewer, tester, deployer) 

• Write the prompts, logic, and scaffolding that guide each agent’s behavior 

• Handle tool use, like enabling agents to access the file system, test runners, version control, and internal APIs 

• Evaluate and refine agents’ output, performance, collaboration patterns, and feedback loops 

If you were on the team last week, you might have: 

• Prototyped a new coding assistant workflow using open-source LLMs and internal knowledge bases 

• Led an architecture discussion on agentic build pipelines or automated PR generation 

• Collaborated with a cross-functional team to build a fast, AI-powered interface for internal tooling 

• Helped define the evaluation framework for AI contributions—accuracy, speed, and impact 

• Mentored a teammate on combining TypeScript and AI tools to accelerate UI prototyping 

• Explored best practices for safely and securely integrating generative AI into a public sector codebase 

What You’ll Need 

We’re looking for an experienced software engineer who is eager to build smarter systems by pairing technical expertise with emerging AI tools. You don’t need to be an AI researcher—but you do need hands-on experience applying generative AI tools to real-world development workflows. 

You should have: 

• 5+ years of professional software engineering experience 

• Proficiency with at least part of our stack: Java, TypeScript + React, and MySQL 

• Extensive applied experience with AI-assisted development tooling—whether it’s Cursor, Windsurf, LLM APIs, codegen platforms, vector databases, agentic frameworks like LangChain, or custom-built systems 

• A strong product mindset and interest in building for real-world impact 

• A bias toward experimentation, iteration, and continuous learning 

• Comfort operating in ambiguity and helping define best practices in a rapidly evolving space 

We’re flexible on which tools you’ve used—we care more about your ability to learn, adapt, and creatively apply AI in practical settings than checking a specific tech box.  

People Who Thrive on Our Team Also Tend to Be: 

• Humble, open, and curious. You ask questions and seek to understand before making assumptions 

• Collaborative by default. You believe the best outcomes come from shared knowledge and ownership 

• Mission-driven. You care about building tech that serves the public good 

• Comfortable with uncertainty. You’re energized by open problems and emerging technologies 

• Growth-oriented. You embrace feedback, learn from setbacks, and look for ways to get better every day 

Mark43’s mission is to empower communities and their governments with new technologies that improve the safety and quality of life for all. We build powerful, scalable, and elegant software that sets a new standard for the tools upon which our first responders rely. Our users are diverse, and we are therefore committed to embracing diversity of thought and experience within our team. 

We’re seeking experienced and innovative senior software engineers who have shipped at enterprise scale and released commercial software to enterprise customers.  Come and help build the next generation of cloud based public safety software. As a senior member of the Mark43 team, you’ll take ownership of products and features from start to finish, and become a knowledge resource that your teammates can trust and rely on. You’ll build robust server side solutions to our unique problems of scale, security, and reliability. We heavily leverage technologies like React, Typescript, Node.js, SQL, Redis, and Elasticsearch  and enjoy participating in the open source community. As an engineer here, you'll have the freedom to implement your own solutions and have a meaningful impact on our product. We will depend on your strong systems architecture design experience to offer insight into technical decision-making in building our products from the ground up. This role offers tremendous career growth opportunities on either a management or Technical Lead track.  

What You’ll Do 

If you were a part of our team, here are some things you would have done last week:  

• Spent time working with a Product Manager to understand requirements for a new feature
• Building features using popular technologies including but not limited to: Node.js, SQL, Redis, and Elasticsearch
• Participate in on-call rotation and strive to continuously improve Mark43's customer experience
• End to end technical ownership of a product or subset of a product
• Improve architectural strategy of a front-end or backend area of the product to meet higher velocity needs created by our growing customer base
• Reviewed code submitted by other software engineers, and submitted your own code for review as part of our pull-request deployment process 
• Spent time meeting with a Product Designer to explain technical constraints for a specific feature 
• Collaborating with design and product teams to understand and document feature requirements 
• Written clear, concise technical documentation to accompany your code that your teammates will trust 
• Spent time testing out a new technology or taking part in a discussion on ways to improve our code base and engineering practices  
• Nurturing an engineering culture that cares deeply about the quality of the code we write, while still working quickly to bring our technology to as many departments as possible 

What You’ll Need 

We are seeking engineers with at least 10 years of professional experience using Java/Node.js. You should be comfortable utilizing agile development and thoroughly testing your own code. Our codebase is large and complex, so we expect you to write clear, concise code and intuitive documentation to help other engineers understand your contributions. Experience developing features built for the cloud and for scale.

• Deep understanding of databases, automated testing, Agile methodologies 
• Proficiency building and managing RESTful APIs 
• Strong DevOps experience and be able to manage a product in the Cloud 
• Deep experience designing and building out infrastructure for complex cloud-based software applications, preferably hosted in AWS, Azure or GCP
• Proven experience in building for scale in a B2B environment 
• Knowledge of or prior experience with microservices architecture 
• Commitment to providing support for more junior members of the team and developing cooperative working relationships 
• Leaning in to contribute to the company outside your role - our engineers have written blog posts, attended events, and helped grow our team 
• Experience in building a low-code platform is a huge plus 

People who thrive on our team also tend to share the following characteristics: 

• Humble, open, and curious. You recognize that no one is perfect and you will be wrong, and you’re excited about listening and learning being a big part of your job. 
• Attentive, active listeners. You’re interested in what others have to say and illustrate your interest with your actions. 
• Resilience. You do not shy away from challenging work and you proactively help your team solve problems. 

• Enthusiastic collaborators. You understand that the best outcomes are achieved through shared ownership, and seek to spread knowledge and expand participation rather than restrict it. 
• Comfortable with uncertainty. You know that sometimes problems and situations can’t be simplified or fully understood, and are at ease working within this type of haziness. 
• Passionate about personal growth. You view mistakes as opportunities for learning, and want to grow as a designer, colleague, and person. 
• Eager to help others. You look for ways to provide support for more junior members of the team and develop cooperative working relationships 

We feel passionately about equal pay for equal work, and transparency in compensation is one vehicle to achieve that. Total compensation for this role is market competitive, including a target base annual salary range of $185,000- $225,000, plus bonus opportunity, company stock options, and a full benefits package, including health insurance, paid time off, and a 401k plan.

Mark43’s mission is to empower communities and their governments with new technologies that improve the safety and quality of life for all. We build powerful, scalable, and elegant software that sets a new standard for the tools upon which our first responders rely. Our users are diverse, and we are therefore committed to embracing diversity of thought and experience within our team.

General Application:

If you’re excited about joining the Mark43 team, but don't see that perfect role listed, we'd love to hear from you through this application! If your background matches an opportunity with us, we will happily get in touch.

A note to consider before applying: There are many open positions on our careers page and new roles are posted frequently. We encourage you to check back often. If any of those seem like a good fit, your best bet is to apply directly to the position!

What you can expect as a member of the Mark43 Team

• Mentorship from more experienced team members
• Opportunities to learn and grow personally and professionally
• Building mission critical and socially responsible software to enable first responders to better serve their communities
• A workplace dedicated to supporting and bettering law enforcement, first responders, and other government agencies via mission critical software products
• Working towards a worthwhile mission with a team of friendly and intelligent coworkers