HSBCJP00054033 MSS IT(eTrading)_Software Engineering GCB_5 - Java/Scala

Senior Java Software Engineer

📍 Kraków | 🕒 Full-time | 💼 Investment Banking Technology

At Antal, we connect top tech talent with exceptional career opportunities. For our Client – a global leader in financial technology – we are currently looking for a Senior Software Engineer to join a high-impact project in the electronic trading domain.

Our Client is building a modern, scalable e-trading platform supporting the trading of high-liquidity fixed income instruments, including government bonds, repos, and IRS. This is a unique opportunity to work on a mission-critical system that combines cutting-edge technology with real-time financial data and automation.

You’ll be joining a collaborative, international team working across major financial hubs, contributing to the development of a high-performance, multi-tier system that directly supports front-office trading operations.

What You’ll Do

• Design and develop Java/Scala-based components of a real-time eTrading system for government bonds, repos, and interest rate swaps.

• Collaborate with quants, traders, and business analysts to enhance pricing, hedging, and trading automation strategies.

• Build React (HTML5) front-end components to enable high-quality, data-rich user experiences.

• Optimize performance and stability of systems handling high volumes of data and real-time trading events.

• Integrate your solutions with internal platforms, external venues, and analytics tooling.

• Expand automated testing and back-testing infrastructure to support high-quality delivery.

• Participate in research and prototyping of new strategies, architectures, and technologies.

• Take ownership of full development lifecycle: architecture, design, implementation, testing, deployment, and 2nd-line support.

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What We’re Looking For

Technical Skills

• Strong commercial experience in Java or Scala (server-side) with a deep understanding of multithreading, concurrency, and performance optimization.

• Proven track record designing and delivering low-latency, high-throughput systems.

• Solid understanding of object-oriented and/or functional programming design principles.

• Experience building distributed systems in mission-critical environments.

• Familiarity with modern web technologies such as React.js / HTML5 is a plus.

• Experience with BDD/TDD and unit testing frameworks.

• Exposure to middleware like ION, Solace, RMDS, or similar technologies is desirable.

Soft Skills & Mindset

• Attention to detail and passion for code quality.

• Able to work autonomously as well as part of a global, cross-functional team.

• Excellent communication skills, including with non-technical stakeholders.

• Strong problem-solving mindset and ability to challenge technical solutions constructively.

Domain Knowledge

• Understanding of electronic trading workflows.

• Knowledge of Fixed Income instruments and markets is highly valued.

• Familiarity with market mechanics in dealer-to-dealer and dealer-to-client trading environments.

• Experience working in agile environments and delivering business-driven features.

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Experience Level

Minimum 5 years of relevant professional experience in software engineering, preferably in financial services or trading environments.

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Recruitment Process

• Technical and behavioral interviews focused on system design, problem-solving, and domain knowledge.

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Why Join Us?

• Collaborate with top-tier engineers and quantitative experts across global financial markets.

• Work on complex challenges in performance, architecture, and scalability.

• Contribute to a product that directly supports strategic business outcomes.

• Flexible hybrid work model in Kraków (approx. 6 days/month in office).

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If you're looking to build the next generation of trading platforms in a collaborative, high-performance team — we’d love to hear from you.Apply now to take your engineering career to the next level.

To learn more about Antal, please visit www.antal.pl