Senior Trading System Developer

Senior Trading System Developer

Fasanara · London, United Kingdom · Full-time · Posted 2026-10-28

Workplace: on_site

Department: Digital Tech

Description

Fasanara Digital is a quantitative investment team applying a scientific, high frequency investment style in digital assets, seeking to achieve exceptional risk-adjusted returns for our investors.

We were founded in 2018 and have grown to a 15 person strong team, managing over $150m USD in a basket of fully delta-neutral trading strategies.

Our diverse team members are fully dedicated to building out our globally deployed, 24/7 availability trading platform, which allows us to capture trading opportunities on >15 crypto liquidity venues, and maintain our position as one of the top trading firms in the crypto industry.

Our Culture

We are strong believers in meritocracy, and we seek to reward people based on impact and excellence. The environment is collaborative, entrepreneurial, and trust based. We set ambitious goals, work extremely hard, stress the importance of teamwork, and adhere to the highest level of excellence in everything we do. We are only as good as our team. Thus, we are building the firm around exceptional talent.

The role

Fasanara Digital is hiring a Trading Systems Developer to join the Front Office Technology team and help build the trading infrastructure that sits closest to the market. You will work alongside traders, quants and fellow engineers to design, build and run systems that are fast, reliable and easy to extend.

This is a hands-on engineering role. You will own components end to end, from design through deployment and production support, in an environment where correctness and performance both matter.

Key responsibilities

• Design, develop and maintain front office trading systems, including market data handling, order management and execution components
• Write high-quality, well-tested production code with a strong focus on performance, latency and stability
• Build and maintain connectivity to trading venues and market data sources
• Develop tooling for analytics, monitoring, reporting and research in Python and SQL
• Work with traders and quants to turn trading requirements into robust, maintainable systems
• Capture, store and query market and trading data, including time-series datasets
• Contribute to code reviews, technical design discussions and engineering standards
• Support production systems, diagnose issues quickly and drive root-cause fixes

Requirements

Required skills and experience

• Commercial experience building software in at least one of C++, Java or Rust
• Proficiency in Python for tooling, analysis and automation
• Solid SQL skills, including query design and working with large datasets
• Experience developing in Linux environments, with sound grasp of concurrency and data structures
• Understanding of the trading lifecycle and electronic trading systems, gained in a bank, hedge fund, proprietary trading firm or similar
• Strong debugging and problem-solving skills, with the discipline to test and measure before optimising
• Clear communicator who works well with both technical and trading colleagues

Desirable

• Experience with time-series databases such as kdb+/q, ClickHouse, TimescaleDB or InfluxDB
• Experience with low-latency or high-throughput systems
• Familiarity with exchange connectivity, market data protocols and order book handling
• Exposure to crypto or multi-asset markets
• Experience with CI/CD, containerisation and Git-based workflows

Benefits

Our benefits include:

• Performance-related Bonus Scheme
• Private Medical & Dental Insurance through Bupa (including children's cover)
• Life Insurance, Income Protection & Critical Illness Cover
• Employee Assistance Programme (EAP) 
• Salary sacrifice pension with Hargreaves Lansdown (currently matched up to 10%)
• Enhanced Maternity & Paternity Leave
• Emergency Parental Leave, Emergency Childcare & Nursery Benefit
• Cycle to Work Scheme
• Charity Giving through CAF
• Annual Wellbeing Budget
• Team socials, annual Summer & Christmas parties, and other events throughout the year

Apply

Apply at Fasanara

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