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Java Backend Developer

London, UK💼 Full-time🗓 2026-05-20 → 2026-08-10

Core

Design and build robust backend services and microservices for a high-availability, performance-critical financial environment.

Role type

Senior IC Java Backend Developer

Builds

Reliable APIs and scalable systems supporting business-critical operations

Domain

Finance + Distributed Systems

Deliverable

production ML models | product features | infrastructure

Required skills

Java 17+, Spring Boot, REST API design, Microservices architecture, PostgreSQL, SQL optimization, Unit/Integration testing (JUnit/Mockito), CI/CD pipelines, Kubernetes, AWS

Preferred skills

Event-driven architectures (Kafka), Observability (metrics, logging, tracing), High-throughput system optimization, Secure software development patterns

Technologies

Java, Spring Boot, Spring Data, Spring Security, JUnit, Mockito, PostgreSQL, Kubernetes, AWS, Kafka

Responsibilities

Design, develop, and maintain backend services following secure coding and clean architecture principles; Build and evolve microservices and RESTful APIs; Collaborate with cross-functional teams to deliver features; Identify and resolve defects, performance bottlenecks, and stability issues; Write high-quality tests and contribute to automation and CI/CD pipelines; Participate in code reviews, refactoring, and documentation; Contribute to continuous improvement initiatives across observability, reliability, and security

Seniority

Senior, hands-on IC

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