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Senior Java Software Engineer

Senior Java Software Engineer

Hybrid

London, United kingdom

£ 125,000 /year

Senior

Full Time

17-02-2026

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Skills

Java Kubernetes Kafka Terraform

Job Specifications

Senior Java Engineer (Core Java)

£100,000 - £130,000

Central London - Hybrid

A high-growth, privately backed Enterprise SaaS company is seeking a Senior Core Java Engineer to join its London-based engineering team. The organisation builds large-scale, mission-critical platforms used by some of the most sophisticated technology and financial services environments globally.

This is an opportunity to work on low-latency, high-throughput distributed systems, solving complex engineering problems at scale within a collaborative, high-performing team.

Key Responsibilities

Design, build and maintain high-performance distributed Java services
Contribute across design, development, testing, deployment and support
Collaborate closely with other engineers to deliver customer-centric solutions
Mentor and be mentored within a senior engineering team
Promote best practices around code quality, testing and reliability
Participate in team support and operational responsibilities

Technology Environment

Core Java (deep JVM knowledge – minimal reliance on frameworks)
Kafka & event-driven architectures
Low-latency, high-throughput systems
Kubernetes (services, deployments, stateful sets)
Terraform
Hazelcast / Hazelcast Jet (bonus)

Get in touch! - Darnell@Thyme.Global