What will you do? 

You will be fully involved in the development of a high-performance FX trading platform, working closely with the Client’s engineering team. The system includes components such as real-time pricing engines, connectivity to exchanges and market data providers (e.g. Bloomberg), and infrastructure supporting low-latency execution. Your core responsibility will be the design, development and continuous optimization of trading components with a strong focus on throughput and latency. The role requires a deep understanding of high-frequency trading architectures, efficient memory management, and performance-critical Java development. You’ll be working in an environment where microseconds matter — contributing directly to the speed, stability, and scalability of the system. 

Your tasks:

•  Design, develop, and maintain components of a high-performance FX trading platform 
• Optimize system architecture and application code for ultra-low latency and high throughput 
• Implement and enhance real-time pricing engines and market data connectivity (e.g. Bloomberg, exchanges) 
• Collaborate closely with the Client’s engineering team in a hybrid model (2 days/week onsite) 
• Apply advanced Java techniques (off-heap memory, lock-free algorithms, GC tuning) in performance-critical contexts 
• Ensure reliability and scalability of the trading infrastructure under high load 
• Participate in code reviews and contribute to high-quality engineering standards 
• Monitor and profile application performance using appropriate tools and methodologies 
• Work in an agile environment with active involvement in technical discussions and continuous improvement 

Your skills :

• At least 5 years of practical experience in Java with focus on low latency performance optimization (off-heap memory management, lock-free algorithms, GC tuning) 
• Deep understanding of high-frequency trading system architecture 
• Experience with specialized trading protocols (FIX, FAST, market-specific binary protocols) 
• Practical experience in implementing design processes ensuring high quality of solutions provided 
• Practical knowledge of the Scrum methodology or similar agile methodology 
• Good communication skills and ability to establish effective cooperation with clients 
• Fluent English and readiness for frequent written, phone or direct communication 
• Availability to work in a hybrid mode – twice a week from the office (GFT or client) 

Nice to have :

• Experience with time-series databases and real-time analytics platforms 
• Experience with capacity planning for trading system infrastructure 
• Knowledge of Test Driven Development methodology 
• Experience with FPGA, hardware acceleration or co-located exchange connectivity 
• Familiarity with performance profiling tools (JMH, YourKit, Honest Profiler) 
• Work experience in distributed teams 

We offer you:

• Hybrid work – 2 days a week in our/our client's office 
• Working in a highly experienced and dedicated team 
• Competitive salary and extra benefit package that can be tailored to your personal needs (private medical coverage, sport & recreation package, lunch subsidy, life insurance, etc.) 
• Contract of employment or B2B contract   
• On-line training and certifications fit for career path 
• Free on-line foreign languages lessons 
• Regular social events  
• Access to e-learning platform 
• Remote work option available for candidates outside GFT office locations (Lodz, Krakow, Warszawa, Poznan, Wroclaw).