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Java Low-Level/Low-Latency Engineer
£100,000 - 100,000
McGregor Boyall
Lombard Court, London
£100,000 - 100,000
Requirements
Must:
I am looking for candidates with a deep understanding of systems-level programming, specifically in Java and/or Rust, C, or C++. You should possess experience with manual memory management, concurrency, and multithreading. Familiarity with Linux internals, system calls, and networking is essential. Bonus points will be awarded for those with experience in kernel bypass (such as Solarflare or DPDK), building custom allocators, or working in no_std environments. Prior work in trading, real-time systems, or performance-sensitive environments, while not crucial, is a plus.
Responsibilities
In this role, you will design and develop low-latency, high-throughput microservices in Java. You will be building and refining core components of our proprietary event-driven framework while working closely with architects, FPGA engineers, and infrastructure engineers to optimize performance across the stack. The focus will be on developing systems with resilience, fault-tolerance, and scalability in mind. Additionally, you will drive performance improvements with hardware-aware optimizations and kernel-bypass techniques.
Description
We are a leading financial technology organization building ultra-low latency systems at scale, and we offer a unique opportunity to join a high-caliber team of engineers working on the number one tech product in our business. You will be involved in creating systems that operate in the microsecond range, pushing the boundaries of performance and reliability in a demanding, mission-critical environment. Our tech stack includes Java, Rust, Linux, GitHub, CI/CD (CircleCI), Docker, TCP/UDP, Playwright (for some teams), OpenOnload, and AWS. The offer includes a competitive base salary of up to ~£130,000 depending on your experience, along with hybrid working options that require 2-3 days a week in our London office. You will also enjoy excellent benefits, including a pension plan, medical coverage, 27 days of leave, and a bonus. This role represents a career-defining opportunity to work on cutting-edge low-latency systems in the industry, within a team that values technical depth, innovation, and clean engineering, where every microsecond counts. We are an equal opportunity employer and do not discriminate on any grounds.
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How many Java Developer jobs are in the UK?
Currently, there are 1021 Java openings. Check also: Kotlin jobs, Scala jobs, Spring jobs - all with salary brackets.
Is the UK a good place for Java Developers?
The UK is one of the best countries to work as a Java Engineer. It has a vibrant startup community, growing tech hubs and, most important: lots of interesting jobs for people who work in tech.
Which companies are hiring for Java Developer jobs in the UK?
Core-Asset Consulting, ApplianSys, u-blox, Serac Group, Mas & Pas Limited, BAE Systems, FCDO Services among others, are currently hiring for Java roles in the UK.
The company with most openings is Ocho as they are hiring for 58 different Java Developer jobs in the UK. They are probably quite committed to find good Java Developers.
The company with most openings is Ocho as they are hiring for 58 different Java Developer jobs in the UK. They are probably quite committed to find good Java Developers.