Trading Systems Integration Engineer - FIX 4.4 Expert

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.
• Build resilient integration and workflow solutions at the intersection of capital markets, modern technology and digital assets.

The Role

As a Senior Integration & Workflow Engineer, you’ll provide specialist engineering services focused on designing and developing custom integration and workflow-orchestration components connecting capital markets platforms, blockchain infrastructure and market infrastructure.

Design and develop custom integration and workflow-orchestration components connecting capital markets entity’s platforms, Blockchain infrastructure and market infrastructure. The scope includes delivering resilient, secure and auditable services supporting pre-trade validation, transaction orchestration, settlement processing and downstream system integration..

What You’ll Do

• 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
• What We’re Looking For 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, re-tries, 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
• We offer a flexible collaboration model based on a B2B contract, with the opportunity to work on diverse projects.
• Recruitment Process:

HR Interview with the recruiter

• Technical Interview
• Client Interview
• Feedback and offer #LI-HYBRID