What will be your responsibilities within IBKR:

Technical Excellence

• Design, optimize, and extend transaction surveillance and data pipeline processes to enhance system efficiency, reliability, and scalability
• Navigate seamlessly between strategic, system-level architecture and function-level implementation details of our surveillance system, which orchestrates 150+ processes
• Optimize data architectures and databases for maximum performance and reliability
• Build developer tooling to accelerate development workflows and system monitoring
• Ensure data accuracy, security, and compliance with regulatory standards 

Ownership and Cross-Functional Partnership

• Take ownership of projects and sub-systems from planning through resolution, making impactful decisions on complex technical and business-related questions
• Collaborate effectively with quantitative engineers, surveillance model developers, and Compliance stakeholders to translate complex business requirements into scalable designs and processes
• Identify project bottlenecks, risks, and limitations; calculate costs; and provide strategic insights to stakeholders
• Transform high-level surveillance concepts into production-ready processes that deliver actionable insights

Data Architecture & Stewardship

• Own and curate dozens of mission-critical datasets that drive surveillance operations
• Design, build, and automate robust data pipelines to support real-time and batch processing
• Develop advanced data quality frameworks to proactively identify issues before they impact operations

Innovation & Optimization

• Contribute to the evolution of coding standards and internal code review processes
• Drive best practices in data storage, retrieval, governance, and privacy protection
• Drive automation of processes and workflows to reduce manual effort and enhance system maintainability

 Which skills are required:

• 5+ years of professional software engineering experience in Python, C++ or Java
• 3+ years of professional experience in Python as a primary language (non-scripting)
• Extensive experience in Pandas or NumPy, Polars is nice to have
• 1-3 years of professional experience with Linux operating systems
• Thorough understanding of databases and SQL
• Experience with large Python codebases
• Bachelor's or master's degree in Computer Science, or a related area
• High attention to detail

Good to Have:

• Experience with data engineering or ETL pipelines
• Knowledge of finance
• Knowledge of C++ or Java
• Masters/PhD

To be successful in this position, you will have the following:

• Self-motivated and able to handle tasks with minimal supervision.
• Superb analytical and problem-solving skills.
• Excellent collaboration and communication (Verbal and written) skills.
• Outstanding organizational and time management skills.

Company Benefits & Perks

Position

We seek a full-stack developer to help us build, maintain and improve existing, internally used web applications. In the ongoing upgrade project, our goal is to make the application more stable and maintainable, and to replace the old framework with modern, widely recognized ones. The perfect candidate is not afraid to touch old code, can see the big picture and is open to discussing improvement ideas.

Interactive Brokers Group has consistently been at the forefront of trading innovation, starting with the invention of the first floor-based handheld computer in 1983. We pride ourselves on being primarily a technology company. We continue to challenge the status quo and push boundaries to offer the best trading platform with the most sophisticated features, all for the lowest cost to our clients.

Responsibilities

• Take part in the BAU development tasks 
• Designing, implementing, and delivering high-quality software solutions that conform to architectural standards
• Optimizing and refactoring existing code for improved reliability and performance
• Understand and rework/improve the existing codebase
• Advise improvements on the application and architectural level
• Testing, fine-tuning, and deploying new software features

Qualifications, Skills & Attributes

Minimum qualifications:

• Degree in Computer Science or related technical field
• 5+ years of experience in Java development
• Understanding Java EE
• Experience in web development (JavaScript, HTML, JSP), familiarity with JavaScript frameworks such as Vue.js is a plus.
• Experience with Spring
• Experience with Oracle SQL
• Strong analytical and problem-solving skills
• Strong communication skills in English

Company Benefits & Perks

Brandwatch is looking for a new member for the Integrations & Marketplace team. You will be part of a cross-functional, autonomous team responsible for delivering new integrations across our product suite.
As a Senior Backend Engineer in Brandwatch, you will be responsible for developing high-quality code that can improve current solutions, or provide new functionality to our customers. You will be part of the entire journey that brings a feature from a discovery state to delivery on production.

In this role, you will:

• Improve and maintain the backend stack of our Marketplace and current Integrations while contributing ideas and feedback to the rest of your backend colleagues.
• Uphold a high-quality standard in the backend stack in collaboration with other teams.
• Deliver well-tested and scalable solutions.
• Act as a sparring partner to various members of the team.
• Proactively share and debate best practices with your peers.

We are looking for people with:

• A solid understanding of APIs and contracts.
• Familiarity with micro-services.
• Intimate knowledge of the Spring Framework and the Spring ecosystem (although other similar frameworks are also fine).
• Experience of highly distributed, event-driven systems.
• A record of coaching & mentoring other team members.
• A willingness and aptitude to influence the technical, architectural direction of our product.
• A working knowledge of Apache Kafka and PostgreSQL.
• Experience in building and debugging complex systems.
• A proficiency with Docker and Kubernetes.
• An ability to write concise, to the point and idiomatic code in Java.
• Knowledge of unit testing frameworks and end-to-end testing.
• Excellent skills in communication and teamwork.
• Familiarity of Agile and the associated methodologies and tooling.
• A willingness to contribute to team reflection and improvement.
• An ability to adapt to change, be resourceful and share knowledge with the rest of the team.
• Good fluency in English.

At Cision, we build software that supports large-scale, global enterprise infrastructure. Our teams enable platform, operations, and engineering groups with tools that improve visibility, reliability, automation, and decision-making across complex systems.
We are seeking a Staff Full Stack Software Engineer to lead the design and delivery of internal platforms used by enterprise infrastructure teams. This is a senior individual contributor role for an engineer who thrives in ambiguity, works independently, and owns systems end-to-end—from architecture through production operations.
You will operate as a technical leader within the team, influencing design decisions, setting engineering standards, and delivering high-impact solutions across backend services, data pipelines, and user-facing applications.

What You’ll Do
• Architect, build, and own full-stack software platforms supporting enterprise infrastructure and operations teams.
• Lead the technical design of systems that ingest, process, analyze, and expose infrastructure and operational data at scale.
• Develop backend services and APIs for data collection, enrichment, and querying.
• Build and maintain web interfaces with advanced search, filtering, and usability tailored for technical users.
• Design and implement ETL and data processing pipelines for structured and semi-structured data sources.
• Ensure applications are fully containerized and production-ready using Docker and Kubernetes-based deployment models.
• Act as a technical authority on system design, performance, reliability, and maintainability.
• Collaborate with platform, infrastructure, security, and product stakeholders to shape solutions aligned with long-term platform strategy.
• Set and uphold engineering best practices around testing, code quality, documentation, and operational readiness.
• Review designs and code across the team, providing clear guidance and raising the overall technical bar.
• Identify systemic issues, reduce technical debt, and proactively improve platform scalability and developer experience.

What You’ll Bring
• Extensive experience as a Staff or Senior Full Stack Software Engineer working on complex, production systems.
• Proven ability to operate independently in ambiguous problem spaces and drive solutions to completion.
• Strong backend engineering experience, including API design and data-intensive services.
• Experience building data-driven applications involving ingestion, transformation, and analysis.
• Proficiency in one or more backend languages such as C#, Python, Go, or Java.
• Strong SQL skills and experience with relational databases.
• Hands-on experience with Docker and containerized application delivery.
• Solid understanding of distributed systems fundamentals and cloud-native application design.
• Experience working with CI/CD pipelines and modern software development workflows.
• Excellent technical judgment, communication skills, and ability to influence without authority.

Preferred Experience
• Experience designing and operating systems on Kubernetes.
• Familiarity with PostgreSQL, MySQL, or similar databases.
• Experience with ETL pipelines, analytics platforms, or operational data tooling.
• Exposure to cloud platforms such as GCP or AWS.
• Background building internal platforms or tools for infrastructure, SRE, DevOps, or platform engineering teams.
• Understanding of observability, cost optimization, reliability engineering, or infrastructure automation.
Education & Experience
• Bachelor’s degree in Computer Science or a related field, or equivalent practical experience.
• Typically 10+ years of professional software engineering experience, with demonstrated ownership of large or critical systems.

At Cision, we build software that supports large-scale, global enterprise infrastructure. Our teams enable platform, operations, and engineering groups with tools that improve visibility, reliability, automation, and decision-making across complex systems.
We are seeking a Staff Full Stack Software Engineer to lead the design and delivery of internal platforms used by enterprise infrastructure teams. This is a senior individual contributor role for an engineer who thrives in ambiguity, works independently, and owns systems end-to-end—from architecture through production operations.
You will operate as a technical leader within the team, influencing design decisions, setting engineering standards, and delivering high-impact solutions across backend services, data pipelines, and user-facing applications.

What You’ll Do
• Architect, build, and own full-stack software platforms supporting enterprise infrastructure and operations teams.
• Lead the technical design of systems that ingest, process, analyze, and expose infrastructure and operational data at scale.
• Develop backend services and APIs for data collection, enrichment, and querying.
• Build and maintain web interfaces with advanced search, filtering, and usability tailored for technical users.
• Design and implement ETL and data processing pipelines for structured and semi-structured data sources.
• Ensure applications are fully containerized and production-ready using Docker and Kubernetes-based deployment models.
• Act as a technical authority on system design, performance, reliability, and maintainability.
• Collaborate with platform, infrastructure, security, and product stakeholders to shape solutions aligned with long-term platform strategy.
• Set and uphold engineering best practices around testing, code quality, documentation, and operational readiness.
• Review designs and code across the team, providing clear guidance and raising the overall technical bar.
• Identify systemic issues, reduce technical debt, and proactively improve platform scalability and developer experience.

What You’ll Bring
• Extensive experience as a Staff or Senior Full Stack Software Engineer working on complex, production systems.
• Proven ability to operate independently in ambiguous problem spaces and drive solutions to completion.
• Strong backend engineering experience, including API design and data-intensive services.
• Experience building data-driven applications involving ingestion, transformation, and analysis.
• Proficiency in one or more backend languages such as C#, Python, Go, or Java.
• Strong SQL skills and experience with relational databases.
• Hands-on experience with Docker and containerized application delivery.
• Solid understanding of distributed systems fundamentals and cloud-native application design.
• Experience working with CI/CD pipelines and modern software development workflows.
• Excellent technical judgment, communication skills, and ability to influence without authority.

Preferred Experience
• Experience designing and operating systems on Kubernetes.
• Familiarity with PostgreSQL, MySQL, or similar databases.
• Experience with ETL pipelines, analytics platforms, or operational data tooling.
• Exposure to cloud platforms such as GCP or AWS.
• Background building internal platforms or tools for infrastructure, SRE, DevOps, or platform engineering teams.
• Understanding of observability, cost optimization, reliability engineering, or infrastructure automation.
Education & Experience
• Bachelor’s degree in Computer Science or a related field, or equivalent practical experience.
• Typically 10+ years of professional software engineering experience, with demonstrated ownership of large or critical systems.

The Position

At OPSWAT’s Technology Development Centre in Veszprém, we are looking for talented Backend Engineers to join our teams who are designing, building and re-engineering cybersecurity products that protect critical infrastructure worldwide. If you are passionate Backend Engineer with C++, C# or Java programming skills and you are interested in designing and developing unique security solutions that no one else is building, then you could be just the person we are looking for!

In Veszprém, in the heart of a peaceful, friendly, historic city, we have created a modern, inspiring office environment that encourages collaboration, where friendly, direct relationships between colleagues and high-quality professional work are equally important. Using modern, innovative technologies, we work on products that truly contribute to making our world safer at one of the world's leading cybersecurity companies. 
We support professional development through training, mentoring, and real opportunities for advancement. The Veszprém office offers the perfect balance of calm and professionalism – a modern environment, friendly people, and a strong team spirit.
If you want to work in a place where your knowledge is valued and you are treated as a person, then OPSWAT Veszprém is the place for you.

At OPSWAT, we believe that great talent is always worth getting to know, even when there are no current vacancies. Our Evergreen Backend Engineer position offers continuously open opportunities for enthusiastic and motivated professionals who may join us in the future. It is not tied to a specific vacancy, but it enables us to get to know you and stay in touch, so that when a new opportunity arises, you could be among the first people we reach out to.  

If you’re interested in working as a Backend Engineer at OPSWAT, please apply, and we will get in touch!

You Will Have the Opportunity to

• Planning, designing, developing, and managing C++, C# and Java-based applications and software
• Build and maintain CI/CD pipelines and automated deployment workflows
• Collaborate with agile development teams to achieve sprint and quarterly goals

What We Are Looking For

• Solid programming skills in C++, C# and Java
• Experience in version management (preferably git)
• Experience with agile development methodologies 
• Familiarity with Jira, Confluence, Bitbucket, or similar collaboration tools

Why You'll Love Working Here

• Stable, growing international company background with an exceptional customer group 
• Opportunity to improve your professional skills 
• The newest technology environment 
• Language course and opportunity for active recreation – kettlebell, football and office massage 
• Attractive working environment – nice office full of accessories (fruits every day, coffee, breakfast, tea etc.) 
• Regular team events and Happy Hour activities 

Mission

Speechify is the easiest way to listen to the world’s information. Articles on the web, documents in the cloud, books on your phone. We absorb it all and let you listen to it at your desk, on the go, at your own speed, and with tools that make learning easier, deeper, and faster.

What streaming services have done for audio entertainment, we’re doing for audio information. And whatever we’re doing seems to be working. We’re #1 in our category, and experiencing exponential growth.

Overview

We're looking for a Senior Software Engineer to join our Core Experiences Team. This team builds and maintains the foundational services and SDKs that power Speechify’s product experience across platforms. It's a critical role for someone who enjoys working at the intersection of product and infrastructure, thinks strategically, and is passionate about designing clear, reliable APIs and simple systems that directly enhance the user experience.

What You’ll Do

• Collaborate with Speechify’s Product Teams to scope projects, find ways to reduce scope to get faster feedback from customers, navigate the integration/UX tradeoffs relevant to different product teams, and deliver solutions via our cross-platform SDK
• Optimize existing functionality to ship things like faster loading and more intelligent parsing by designing more efficient abstractions and improving our algorithms
• Ship cloud functions, lightweight backend services, and jobs using Kotlin

An Ideal Candidate Should Have

• Systems thinking. You know that optimizing a system requires end-to-end design, and you believe simplicity is valuable.
• Speed. You work quickly to generate ideas and options and know how to decide which things can ship now and what things need time
• Focus. We’re a high-growth startup with a busy, remote team. You know how and when to engage or be heads down
• Collaboration. You know how to inspire, play, and negotiate with opinionated designers, marketers, and PMs
• Preferred Tech Stack:
  • Kotlin Multiplatform (Java experience is OK but role is Kotlin Multiplatform) 
  • Prior experience with GCP is a plus

What We Offer

• A fast-growing environment where you can help shape the company and product.
• An entrepreneurial-minded team that supports risk, intuition, and hustle.
• A hands-off management approach so you can focus and do your best work.
• An opportunity to make a big impact in a transformative industry.
• Competitive salaries, a friendly and laid-back atmosphere, and a commitment to building a great asynchronous culture.
• Opportunity to work on a life-changing product that millions of people use.
• Build products that directly impact and support people with learning differences like dyslexia, ADD, low vision, concussions, autism, and more.
• Work in one of the fastest growing sectors of tech, the intersection of artificial intelligence and audio.

Think you’re a good fit for this job? 

Tell us more about yourself and why you're interested in the role when you apply.
And don’t forget to include links to your portfolio and LinkedIn.

Not looking but know someone who would make a great fit? 

Refer them! 

Speechify is committed to a diverse and inclusive workplace. 

Speechify does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status.

What Is The Role:

We are on the lookout for a Senior Software Developer to join our Elasticsearch - Distributed Systems team and focus on how Elasticsearch provides scale, performance, and resilience. This team owns how nodes in an Elasticsearch cluster communicate, and how data are indexed, allocated, and replicated across nodes. 

What You Will Be Doing:

• Improving Elasticsearch’s components that support concurrent and consistent indexing across multiple machines.
• Maintaining our cluster coordination system to keep performance high even though nodes come and go from the cluster and data moves around, while maintaining the safety and liveness properties of the system as a whole.
• Pushing the limits on the number of shards, nodes, and petabytes that Elasticsearch can handle today
• Looking into all kinds of issues, including performance or concurrency issues, and proposing solutions.
• Supporting our support engineers with the harder problems.

What You Bring:

• A strong background in distributed systems and consensus algorithms.
• You have strong skills in core Java and are conversant in the standard library of data structures and concurrency constructs, as well as newer language features.
• You have a deep technical proficiency in algorithms.
• You have shown your ability to understand and work on complex, highly distributed systems.
• You demonstrate the ability to build and debug features with a broad impact, running on multiple machines.
• You are able to own projects from beginning to end. This covers both technical design and working with others to develop needed components.

Bonus Points:

• Data stores
• Search, analytics, Lucene
• Strong knowledge of the JDK
• Asynchronous event-driven network frameworks such as Netty