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Senior Java Software Engineer
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Senior Java Engineer
London (Hybrid, 3 days onsite)
Up to £100,000
Our client is a growing fintech building high-performance, low-latency backend systems where engineering quality directly impacts product capability and scale.
This is a hands-on senior role for a deep Java specialist who wants ownership, architectural influence, and a clear path to leading a small team.
What You’ll Own
- Design and build distributed, low-latency services in Java 25
- Develop production-grade microservices (Dropwizard)
- Solve real concurrency and multithreading challenges
- Improve throughput, performance, and system resilience
- Run services in Docker/Kubernetes environments
- Contribute to infrastructure decisions (Terraform exposure helpful)
- Raise code quality and architectural standards
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You won’t be maintaining a narrow component in a large silo. You’ll design, build, and ship with real influence.
What They Care About
- Deep Java expertise (modern versions, strong fundamentals)
- Strong production microservices experience
- Proven work on performance-sensitive systems
- Strong understanding of concurrency and JVM internals
- Ownership mindset and strong problem-solving ability
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Finance experience is useful but not required. They care more about hands-on engineering depth than domain.
Why This Role
- High ownership in a small engineering team
- Clear path to Tech Lead as the team scales
- Direct exposure to leadership and decision-making
- Broad architectural impact rather than narrow bank-style roles
This role is suitable for a strong Backend Java Engineer who wants real ownership, architectural impact, and a clear path into Tech Lead within a growing fintech.
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