Randstad Digital
Java Backend with Kotlin
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Job Title: Java with Kotlin
Location: London (Hybrid)
Role Type: FTE
Are you a Senior Java Engineer who takes full ownership of code quality through strict Test-Driven Development (TDD) while bringing real-world Capital Markets domain experience to the table?
We are looking for engineers who combine deep technical craft with genuine domain knowledge across trading or post-trade environments.
Key Highlights of the Role
- Core Technical Stack: Java (Expert Level), AWS S3, Apache Kafka, Kubernetes (Kotlin is a plus).
- Architecture: Event-driven microservices, message-passing, event sourcing, ordering guarantees, and replay semantics.
- Domain Focus: Trade lifecycle, position management, post-trade operations (cashflows, settlements, client reporting), synthetic swaps, or regulatory frameworks (MiFID, EMIR, 871m).
- Delivery & Practices: Strict TDD, trunk-based development, continuous integration, and frequent zero-downtime production releases.
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What We Are Looking For
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- Strict TDD Practitioner: You use TDD as an architectural design tool from day one and own quality end-to-end (no outsourcing to QA groups).
- Capital Markets Domain Knowledge: Proactive understanding of equities, trade booking, settlement flows, or prime brokerage operations.
- Modern CI/CD Engineering: Experience operating in fast-paced, iterative delivery setups with short feedback loops.
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