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Trading Systems Integration Engineer

Poland💼 Full-time🗓 2026-09-14 → 2026-09-25

Core

Design and develop custom middleware and workflow-orchestration services connecting capital markets platforms, blockchain infrastructure, and market infrastructure.

Role type

Senior Integration & Workflow Engineer (Capital Markets)

Builds

Resilient, secure, and auditable integration services for pre-trade validation, transaction orchestration, and settlement processing.

Domain

Financial services, Capital Markets, Blockchain/DLT

Deliverable

production ML models | product features | infrastructure

Required skills

FIX 4.4, Java/Spring Boot or .NET/C# or Node.js/TypeScript, REST API, Kafka/MQ, distributed-system patterns, relational databases, Git/CI/CD

Preferred skills

Blockchain/DLT, digital assets, smart assets, custody platforms

Technologies

FIX 4.4, Kafka, MQ, Spring Boot, .NET/C#, Node.js/TypeScript

Responsibilities

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; Develop orchestration logic for Pre-Trade Gateway, DvP/settlement; Implement validation, routing, and transaction-processing logic; Develop adapters for external platforms and market-infrastructure systems; Implement idempotency, retry, queueing, and recovery patterns; Implement asynchronous/event-driven processing; Build robust exception handling and audit logging; Develop automated unit/component tests; Troubleshoot complex cross-system integration issues; Support CI/CD and production-readiness; Develop and maintain FIX 4.4 message flows for tokenized order flows.

Seniority

Senior, hands-on IC

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