Let's start with the role

You will join an autonomous Agile team and work closely with the Product Owner, Agile Delivery Lead, Automation Testers, and other Software Engineers to create a competitive advantage for Kaizen and offer a unique online experience to our customers. Besides being part of the Agile team, you will work closely with talented backend professionals within the Backend Chapter. 🙌

Senior Software engineers in Kaizen are responsible for a multitude of projects, from our customer-facing websites and mobile applications to our admin and internal tools and backend services, most of them withstanding high volume / traffic.

• Assume full responsibility for our applications on an engaging development journey.
• Create new solutions and see them through, from conception to production;
• Turn requirements into simple and sophisticated technological systems. Our large scale, highly available infrastructure is at the core of that challenge;
• Play a central role on Design, build, and maintain efficient, reusable, and reliable code;
• Research new technologies to find new and efficient ways to solve day to day challenges;
• Ship high-value features quickly;
• Challenge the status quo and improve the team and product;

Most of our sites and services are written in in C# / ASP.NET and new services are written in .NET Core. New applications use vue.js or Angular in the front-end while older ones use server-rendered (Razor) views in combination with jQuery. Microsoft Orleans enables our scalable and robust distributed applications. MS SQL Server is used for most of our storage needs, but also Redis and ElasticSearch are used when it makes sense to do so. RabbitMQ is our go-to message broker. We use Gitlab for code versioning and CI, and the Atlassian stack for tickets and documentation.

What you'll bring

• At least 4 years of experience developing production-level software using .NET Core;
• Proficient in C# and MVC;
• Experience with Testing/Metrics Monitoring/Logging on a large scale distributed system;
• Experience with Microservices architecture;
• Experience with asynchronous flows using message brokers;
• Good understanding of basic web technologies, such as HTTP, REST, etc.;
• Practical knowledge of algorithms and design patterns;
• Passionate about delivering high-quality code;
• Fluent in English, both oral and written.

Nice to have:

• Expertise in concurrency, multi-threading, and event-driven architecture;

Kaizen Gaming Perks

• 🕑 Hybrid way of working & remote options;
• 🏃 A buddy will support you with your onboarding;
• 💸 Competitive pay & bonus scheme;
• ⭐Developmental 360° feedback framework;
• 💰 Monthly meal allowance;
• 👩‍⚕️ Private health insurance for you and your family;
• 📚 Unlimited access to Udemy & continuous training;
• 👨‍👩‍👧‍👦 Family Support.
• #LI-Remote

Growe welcomes those who are excited to:

• Design, build, and maintain backend services using .NET (C#);

• Develop and evolve microservices in a production environment;

• Support existing functionality and ensure backward compatibility of releases;

• Work on core domain flows such as accounts, registration, authentication, wallet, and related business capabilities;

• Participate in task analysis, decomposition, and effort estimation;

• Deliver completed tasks for testing and collaborate with QA during test phases;

• Build integrations using asynchronous communication and event-driven patterns;

• Work with relational databases, transactional flows, and optimize query performance;

• Identify performance bottlenecks and contribute to system design improvements;

• Contribute to service observability (logs, metrics, traces, dashboards, monitoring);

• Manage deployment configurations and manifests in Kubernetes environments;

• Work in a GitOps setup and participate in deployment and operational ownership;

• Collaborate with DevOps teams on infrastructure-related changes (including Terraform workflows);

• Participate in on-call rotation and handle production incidents;

• Identify technical debt and propose improvements; 

• Perform high-quality code reviews focusing on maintainability, performance, and consistency.

We need your professional experience:

• 5+ years of commercial backend development experience with C# / .NET (6+), .NET Core / ASP.NET Core;

• Solid understanding of microservices architecture and distributed systems;

• Experience with asynchronous communication and event-driven architectures;

• Experience with message brokers (Kafka or similar);

• Strong knowledge of relational databases (SQL, transactions, indexing, performance tuning), PostgreSQL will be a plus;

• Experience with ORM tools (e.g., Entity Framework);

• Experience writing Unit and Integration tests; 

• Understanding of authentication and authorization (OAuth 2.0, OpenID Connect);

• Good understanding of software design principles (SOLID, separation of concerns, testability);

• Understanding of observability and monitoring in production systems;

• Experience troubleshooting performance and memory issues;

• English - Upper Intermediate;

• Experience with Orleans, Redis will be a plus;

• Experience with AWS, Kubernetes, Terraform will be a plus;

• Experience with Grafana, Loki, Tempo will be a plus.

We appreciate if you have those personal features:

• Good communication skills;

• Multitasking, quick task execution;

• Good team player;

• Responsibility.

We are seeking those who align with our core values:

• GROWE TOGETHER: Our team is our main asset. We work together and support each other to achieve our common goals;

• DRIVE RESULT OVER PROCESS: We set ambitious, clear, measurable goals in line with our strategy and driving Growe to success;

• BE READY FOR CHANGE: We see challenges as opportunities to grow and evolve. We adapt today to win tomorrow.

Growe welcomes those who are excited to:

• Lead the frontend team and drive technical decisions;

• Design and maintain frontend architecture, ensuring high code quality;

• Select, implement, and improve technologies, standards, and best practices;

• Review code and mentor developers;

• Plan tasks and collaborate closely with product, design, and backend teams;

• Optimize interface performance and ensure stability.

We need your professional experience:

• Strong proficiency in JavaScript and TypeScript, with a solid understanding of core language concepts;

• Experience building scalable and maintainable frontend architecture;

• Ability to work without reliance on a specific framework (framework-agnostic mindset);

• Experience with Web APIs, real-time communication (WebSocket/SSE), and API integration;

• Solid understanding of frontend performance, stability, and optimization techniques;

• Experience with code reviews, mentoring, and maintaining code quality standards;

• Experience with SSR or backend-related technologies (e.g., ASP.NET Core / Razor);

• Experience working with high-load systems;

• Familiarity with CI/CD tools (e.g., GitLab CI);

• Previous Tech Lead or leadership experience (nice to have);

• Upper Intermediate level of English.

We appreciate if you have those personal features:

• Strong communication skills and ability to work effectively in a team;

• Leadership mindset with the ability to mentor and support other engineers;

• Strong problem-solving skills and analytical thinking;

• Ability to make technical decisions and take responsibility for them.

We are seeking those who align with our core values:

• GROWE TOGETHER: Our team is our main asset. We work together and support each other to achieve our common goals;

• DRIVE RESULT OVER PROCESS: We set ambitious, clear, measurable goals in line with our strategy and driving Growe to success;

• BE READY FOR CHANGE: We see challenges as opportunities to grow and evolve. We adapt today to win tomorrow.

We are searching for a Senior .NET Developer on behalf of one of our clients, a successful and growing property & casualty insurance software company. The client develops proprietary enterprise solutions that manage the full operational suite for insurance carriers, their agents, and customers. This is an exciting opportunity to work with both established and cutting-edge Microsoft-based technologies, including an active migration to .NET Core and integration of AI tools into real development workflows.

Responsibilities

• Design, develop, and maintain full-stack features across backend services, APIs, frontend, and database layers
• Work primarily on backend systems (~80%) with some frontend responsibilities (~20%)
• Contribute to and modernize legacy VB.NET MVC applications while supporting the migration to .NET Core
• Build and integrate AI-assisted development workflows using tools such as ChatGPT, Claude, or similar technologies
• Collaborate directly with clients to gather requirements, deliver enhancements, and provide technical solutions
• Write and optimize SQL queries, stored procedures, and database interactions in SQL Server
• Participate in Agile development processes using tools like JIRA and Git/TFS

Requirements

• 7–8+ years of full-stack development experience, with the ability to independently own features end-to-end
• Strong hands-on experience with VB.NET and C#
• Solid command of ASP.NET MVC architecture — controllers, backend integration, and request lifecycle
• Proficiency in JavaScript, jQuery, and Bootstrap
• Strong SQL Server and T-SQL skills, including stored procedures and query optimization
• Experience with TFS and Visual Studio 2019+
• 1–2+ years of hands-on experience using AI tools in a real development workflow (ChatGPT, Claude, OpenWebUI, or similar)
• Proven ability to work directly with clients, gathering requirements and translating them into technical solutions
• Self-directed, mature, and comfortable working with minimal supervision
• Familiarity with Agile methodologies and tools like JIRA

Nice to Haves

• Experience migrating legacy applications to .NET Core
• Familiarity with cloud environments, particularly Azure
• Exposure to agentic coding workflows, MCP servers, or prompt engineering for production use cases
• Familiarity with infrastructure such as Windows Server, Hyper-V, or on-premise data centers
• Prior experience in enterprise software development, ideally within insurance or financial systems

If you are a seasoned .NET developer who thrives in a client-facing, hands-on role and wants to work at the intersection of legacy modernization and emerging AI technologies, we'd love to hear from you.

Essential Duties and Responsibilities:

• Implement functionality in the Medrio platform, in accordance with standards and operating procedures
• Contribute to quality assurance processes through activities such as functional and unit testing, defect triage, and regular code reviews
• Create and maintain internal and external feature documentation, including design and test plans, API guides, and process documents
• Participate in team exercises (meetings, planning discussions, etc) in an inclusive manner
• Provide operational support for Medrio platform components in regulated, validated environments

Customers or Clients:

• Management
• Internal Team
• Consultants

Education and Years of Experience:

• BS degree and 3+ years as a senior full stack developer

Working Conditions (include any required travel): 

• Standard remote office position

Skills/Experience:

• Associate: 3 years professional Software Development experience, or an equivalent combination of education and experience;
• Senior: 6 years professional Software Development experience, or an equivalent combination of education and experience;
• Experience developing enterprise-grade applications using C# (WebAPI, ASP.NET Core, etc.)
• Experience writing and optimizing T-SQL, and/or utilizing and optimizing EntityFrameworkCore in production environments
• Experience developing enterprise-grade web applications using HTML, CSS, and Javascript/Typescript
• Strong critical-thinking and problem-solving skills
• Strong attention to detail, processes, quality assurance
• Strong understanding of core software development competencies:
• Software Design (Patterns, SOLID, etc.)
• Defect Triage/Debugging
• Research
• Code Literacy
• Interface Negotiations

Other Skills and Abilities:

• Experience in a DevOps culture
• Experience with microservice/distributed architectures
• Experience developing high-performance HTTP APIs for public consumption
• Experience with any of the following ORMs:
• NHibernate
• Dapper
• EntityFrameworkCore
• Experience with any of the following web frameworks:
• Angular.io
• BlazorWasm
• Stencil
• React
• Experience working in an Agile environment, and/or Agile certifications
• Experience with any of the following testing frameworks/toolsets:
• NUnit
• JustMock
• Karma
• Selenium
• Experience with Software Archeology

About Medrio:

At Medrio, we look for smart, capable, and conscientious people to help us expand our product capabilities, grow our business, and better serve our customers. Our employees love working for us because they get to develop, market, and sell a product that advances human health, and they enjoy many perks, including

• Great benefits: We offer medical, dental, vision, and life/LTD insurance, and we cover 100% of our employees’ health insurance premiums and 50% of dependent premiums.
• Wellness: Medrio values our staff’s well-being. To prove it, we promote an atmosphere of work/life balance, including flexible work schedules and locations.
• Weekly company-wide standup.

The Medrio team is made up of individuals with a wide array of skills and interests, but all have a passion for providing the best possible user experience for our customers. We value collaboration, ingenuity and creating a culture of excellence!

Salary Range: $170,000 - 190,000 USD

To see detailed information on the data we collect during the application process, and how Medrio complies with data privacy laws, visit our Careers page.