Senior Java Engineer (Low-Latency Trading Systems) (She/ He/ They)

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Hiring Remotely in Poland
Remote or Hybrid
Fintech • Professional Services • Consulting • Energy • Financial Services • Cybersecurity • Generative AI
Be Yourself at Work, Make a Difference, and Act with Integrity are our values at Capco.
The Role

CAPCO POLAND 

*We are looking for Poland based candidate. 

At Capco Poland, we’re not just another consultancy - we’re the spark behind digital transformation in the financial world. As a global leader in technology and management consulting, we thrive on helping clients tackle the toughest challenges across banking, payments, capital markets, wealth, and asset management.
 
PROJECT OVERWIEW:
The team is working on extending Client's existing, business-critical equities trading system. The system is a low-latency, Java-based trading platform covering the full trading lifecycle and operating under strict performance and stability requirements. The platform covers the full equities trading lifecycle within a fully real-time, latency-sensitive environment. It includes market data ingestion and processing, pricing and quoting, order entry and order management (OMS), execution and smart order routing (SOR/EMS), pre-trade risk checks, and post-trade enrichment and reporting. All components operate without batch processing, ensuring continuous, low-latency performance across the system.

From a business standpoint, the platform supports core Front Office functions including trading, execution, and order management, with a strong focus on equities and complex financial instruments. Engineers collaborate closely with Front Office–aligned IT teams, contributing to systems that are critical to trading operations while requiring solid domain understanding of capital markets products and workflows.

ROLE OVERVIEW: 
We’re looking for a Senior Java Engineer with proven experience building low-latency, event-driven systems in complex environments. You will design, develop, and optimize performance-critical components within a microservices-based trading platform using Java 17 and Spring Boot, working with messaging technologies and modern architectural patterns such as CQRS and ring buffer concepts. The role requires strong ownership, the ability to ramp up quickly in an established codebase, and a DevOps mindset within an Agile setup. Experience with JVM performance tuning and high-throughput systems is highly valued.

KEY RESPONSIBILITIES:

  • Design, develop, and extend low-latency Java components within the trading platform
  • Implement new features across the trading lifecycle
  • Optimize performance and latency-critical paths
  • Collaborate with a designated Technical Lead / Architect
  • Contribute to system stability, scalability, and maintainability
  • Work in an Agile / Scrum setup across multiple thematic streams

REQUIRED SKILLS & QUALIFICATIONS: 

  • 7+ years of experience in software engineering with Java 
  • Proven experience in low-latency trading or execution systems
  • Strong understanding of event-driven architectures
  • Ability to work independently in complex, high-performance environments
  • Comfortable ramping quickly in an established codebase and architecture

TECHNICAL STACK & ARCHITECTURE:

  • Java 17
  • Frameworks / libraries:
    • Spring Boot
    • Selective use of Hibernate
  • Messaging:
    • Solace
  • Architecture:
    • Microservices
    • Event-driven
    • Ring buffer patterns, sequencer concepts, CQRS
  • CI/CD:
    • GitLab
    • Jenkins
  • Infrastructure:
    • Hybrid setup with Azure

We offer a flexible collaboration model based on a B2B contract, with the opportunity to work on diverse projects.

RECRUITMENT PROCESS:

  1. HR interview with the recruiter
  2. Technical interview with Capco Engineering team
  3. Client interview 
  4. Feedback and offer

What the Team is Saying

Sarvani
Michael
Josh

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The Company
HQ: London
6,000 Employees
Year Founded: 1998

What We Do

Capco, a Wipro company, is a global management and technology consultancy specializing in driving transformation in the energy and financial services industries. Capco operates at the intersection of business and technology by combining innovative thinking with unrivalled industry knowledge to fast-track digital initiatives for banking and payments, capital markets, wealth and asset management, insurance, and the energy sector. Capco’s cutting edge ingenuity is brought to life through its award-winning Be Yourself At Work culture and diverse talent. TRUSTED ADVISORS - Our collaborative and entrepreneurial approach position us as trusted long-term partners to our clients. DEEP EXPERTISE - Clients look to us for clear guidance, proven expertise, and the support they need to set their companies up for success. DISRUPTIVE SOLUTIONS- We do not provide off -the-shelf answers to clients’ challenges. Instead, we work in close collaboration to understand the issues, and craft disruptive, bespoke solutions. ACCOUNTABILITY AND OWNERSHIP - We recognize every client has distinct needs and expectations, and we take ownership and accountability for the solutions we design, build, and deliver.

Why Work With Us

We support and encourage an inclusive culture, entrepreneurial outlook and independent thinking. Capco is not about organizational charts and rigid hierarchies – we want all employees to feel that Capco is their firm to own and run. We believe diversity powers innovation. Be Yourself At Work (#BYAW) is an integral and underlying part of our culture

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