Senior Java Developers - Aeron
Senior Java engineer building ultra-low-latency, high-throughput messaging and trading systems in London (hybrid, 2 office days/week). Day-to-day centres on Aeron messaging, JVM/GC and memory tuning, lock-free concurrency, and profiling to minimise latency. Salary up to £195,000.
- Compensation
- £195K / yr
- Location
- London, United Kingdom
- Work setup
- Hybrid
- Seniority
- Senior
- Employment
- Not specified
- Experience
- Not specified
- Category
- Not specified
- Posted
Skills
Must have
- Proven, hands-on experience with Aeron
- Strong experience designing and developing low-latency, high-throughput systems
- Excellent understanding of JVM internals, garbage collection, memory allocation and performance tuning
- Strong knowledge of multithreading, concurrency, lock-free programming and CPU-level performance optimisation
- Experience with profiling, benchmarking and performance analysis
- Solid understanding of network protocols, messaging architectures and distributed systems
- Experience in electronic trading, capital markets or other latency-sensitive environments
- Knowledge of CPU cache behaviour, memory barriers, mechanical sympathy and hardware-aware optimisation
Nice to have
- Experience with Aeron Cluster and/or Aeron Archive
- Familiarity with Linux performance tuning and operating system internals
- Experience with Chronicle, Disruptor or similar high-performance technologies
- Familiarity with network-level optimisation and efficient binary protocols
Full description
Senior Java Developers- Low Latency / Aeron
Location: London (2 days per week in the office)
Salary: Up to £195,000
Overview
We're looking for an exceptional Senior Java Developer with strong Aeron and low-latency engineering experience to join a high-performance technology team building cutting-edge, latency-sensitive systems.
This is an opportunity for an experienced Java engineer to work on highly concurrent, performance-critical applications where speed, reliability and efficient system design are paramount.
The ideal candidate will have deep expertise in Java, hands-on experience with Aeron, and a strong understanding of JVM performance optimisation and low-latency system architecture.
Key Responsibilities
- Design, develop and optimise ultra-low-latency Java applications.
- Build high-performance messaging and communication systems using Aeron.
- Profile, benchmark and tune applications to minimise latency, garbage collection and CPU overhead.
- Develop highly concurrent, multithreaded systems with predictable performance.
- Optimise JVM behaviour, memory management, object allocation and garbage collection.
- Work closely with architects and other engineers to deliver scalable, resilient and high-throughput solutions.
- Investigate complex performance bottlenecks and drive continuous improvements.
- Contribute to technical design decisions, code quality and engineering best practices.
- Proven, hands-on experience with Aeron, ideally including Aeron Cluster and/or Aeron Archive.
- Strong experience designing and developing low-latency, high-throughput systems.
- Excellent understanding of JVM internals, garbage collection, memory allocation and performance tuning.
- Strong knowledge of multithreading, concurrency, lock-free programming and CPU-level performance optimisation.
- Experience with profiling, benchmarking and performance analysis.
- Solid understanding of network protocols, messaging architectures and distributed systems.
- A strong engineering mindset, with a focus on measurable performance improvements and clean, maintainable code.
- Experience in electronic trading, capital markets or other latency-sensitive environments.
- Familiarity with Linux performance tuning and operating system internals.