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Java Engineer

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Harrington Starr

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Location:
United Kingdom , London

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Category:
IT - Software Development

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Contract Type:
Employment contract

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Salary:

80000.00 - 115000.00 GBP / Year
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Job Description:

Senior Java Engineer / SRE London (Hybrid) - A well-established global fintech business operating large-scale trading platforms across multiple asset classes including equities, leveraged products, futures, options, and digital assets. Their technology supports a significant international client base and processes high volumes of real-time trading activity every day. They are continuing to invest heavily in engineering, platform resilience, and product growth, with a strong focus on modern systems, high standards, and sustainable delivery.

Job Responsibility:

  • Build tools, automation, and internal services that improve platform reliability
  • Implement monitoring, telemetry, and observability standards across distributed systems
  • Analyse performance across application, OS, and network layers to identify bottlenecks
  • Help define and improve SLOs / SLAs for critical services
  • Support engineering teams with architecture, scalability, and containerisation initiatives
  • Lead or contribute to incident response and post-incident reviews
  • Improve event-driven and messaging systems for resilience and throughput
  • Drive infrastructure automation and engineering best practices

Requirements:

  • Strong Java development experience in production environments
  • Good understanding of JVM performance tuning and backend optimisation
  • Experience with distributed systems and troubleshooting at scale
  • Hands-on knowledge of containers / orchestration (Kubernetes, Nomad, or similar)
  • Experience with messaging systems such as Kafka, ActiveMQ, or similar
  • Understanding of observability, monitoring, and tracing concepts
  • Strong DevOps / CI/CD mindset
  • Background in financial services or other mission-critical environments is beneficial
  • Strong communication skills and ability to work across teams

Nice to have:

Background in financial services or other mission-critical environments is beneficial

What we offer:
  • High-impact role supporting live trading systems
  • Strong blend of software engineering and SRE work
  • Complex distributed systems challenges
  • Well-known fintech brand with strong career progression
  • Hybrid working and strong overall package

Additional Information:

Job Posted:
May 05, 2026

Employment Type:
Fulltime
Work Type:
Hybrid work
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