Sr. Java Developer
Xcelyst Limited
Charing Cross, United Kingdom
3 days ago
Role details
Contract type
Temporary contract Employment type
Full-time (> 32 hours) Working hours
Regular working hours Languages
English Experience level
Senior Compensation
£ 234KJob location
Charing Cross, United Kingdom
Tech stack
Java
Algorithmic Trading
Amazon Web Services (AWS)
C++
Linux
Memory Management
Financial Information EXchange
Enterprise Messaging Systems
Systems Development Life Cycle
Multithreading
Java Application Server
Real Time Systems
Concurrency
Spring-boot
Low Latency
Kafka
Microservices
Job description
We are seeking a Senior Java Developer to join a high-performing front office technology team, delivering low-latency market connectivity solutions for a global investment bank. You will work on electronic trading systems, building and enhancing connectivity to exchanges, brokers, and liquidity venues., * Develop and enhance low-latency Java applications for market connectivity
- Build and maintain FIX protocol integrations and trading gateways
- Work closely with traders, quants, and front office stakeholders
- Contribute to high-throughput, real-time systems in eTrading environments
- Improve performance, scalability, and resilience of trading platforms
- Participate in full SDLC including design, development, testing, and deployment
Requirements
- Strong Core Java (multithreading, concurrency, collections, memory management)
- Proven experience in low-latency / high-performance systems
- Hands-on experience with market connectivity / eTrading systems
- Deep knowledge of FIX protocol (4.x/5.x)
- Experience in Rates, FX, or Fixed Income trading environments
- Familiarity with Spring Boot / microservices architecture
- Strong understanding of Linux, networking, and messaging systems (Kafka, MQ, etc.)
Desirable
- Experience with electronic trading platforms / algo trading systems
- Knowledge of C++ or other low-level languages
- Exposure to cloud (AWS/GCP) and CI/CD pipelines, * 8-12+ years Java experience
- Strong banking / capital markets background
- Previously worked on exchange connectivity / order routing / pricing systems
- Comfortable in front office, fast-paced environments