Trading Systems Integration Engineer

Capco Poland is a global leader in technology and management consulting, focusing on digital transformation in the financial world, specifically in banking, payments, capital markets, wealth, and asset management.

• Strong hands-on experience developing enterprise integration/middleware applications
• Strong hands-on experience with FIX 4.4, including message structures, tags, session management, routing, order lifecycle messages, and execution reporting
• Experience integrating FIX 4.4-based exchange order flows with API/middleware-based downstream systems, including DLT or other non-traditional market infrastructure
• Strong development experience in Java / Spring Boot, .NET/C#, Node.js/TypeScript or comparable enterprise technology stack
• Strong FIX 4.4, REST API, and service-integration experience
• Experience implementing workflow/orchestration or transaction-processing applications
• Experience with asynchronous processing, messaging and event-driven patterns such as Kafka, MQ, or equivalent
• Strong understanding of distributed-system patterns including idempotency, retries, timeouts, circuit breakers, concurrency, and failure recovery
• Experience with relational databases and persistent transaction/state management
• Experience integrating with third-party/vendor APIs
• Experience with secure enterprise application development, authentication/authorization, and audit logging
• Experience with Git, CI/CD, automated testing, and modern deployment practices
• Strong troubleshooting skills across distributed applications and interfaces

Domain & Industry Experience:

• Financial services integration experience, particularly capital markets, payments, trading or settlement
• Experience with financial-market messaging standards
• Experience developing transaction orchestration in regulated/high-availability environments
• Exposure to blockchain/DLT, digital assets, smart assets, or custody platforms is preferred

• Design and develop custom middleware and workflow-orchestration services
• Build REST/API-based integrations with internal and third-party platforms
• Implement transaction and workflow state management, including multi-step processing across systems
• Develop orchestration logic for Pre-Trade Gateway, DvP/settlement, and downstream integration flows
• Implement validation, routing, reservation/earmark, and transaction-processing logic
• Develop adapters and integration services for external platforms and market-infrastructure systems
• Implement idempotency, retry, queueing, replay, and recovery patterns for resilient transaction processing
• Implement asynchronous/event-driven processing where required by detailed architecture
• Build robust exception handling, error classification, and operational status management
• Implement audit logging, monitoring, and traceability across end-to-end workflows
• Develop data mappings, transformation, and canonical integration models
• Support authentication, authorization, API security, and enterprise security requirements
• Develop automated unit/component tests and support SIT/E2E testing
• Troubleshoot complex cross-system integration and production issues
• Support CI/CD, deployment, configuration, and production-readiness activities
• Produce technical documentation and support knowledge transfer/handover
• Develop and maintain FIX 4.4 message flows and routing logic connecting the existing exchange environment with the DLT/tokenized order flow
• Implement FIX message mapping, validation, routing, acknowledgements, execution reports, rejects, and error handling for tokenized order flows

*We are looking for Poland based candidate.