Java / Rust Developer

Job Title: Java/Rust Developer - Low Latency Trading Platform
Location: Paris, France (3 days onsite, 2 days remote)
Contract Type: Freelance - 12 Months
Start Date: ASAP
Languages: French & English required

About the Role

We are seeking a highly skilled Java/Rust Developer to join a cutting-edge trading technology team in Paris. This is a freelance contract role focused on performance optimisation for a low latency trading platform. You will play a key role in the redesign of risk systems, enabling real-time visibility of trading positions across the platform.

Key Responsibilities

• Design and implement high-performance, low-latency components in Java and/or Rust.
• Collaborate with quant and trading teams to ensure real-time risk and position data is accurate and performing.
• Contribute to the re-architecture of risk systems to support real-time trading insights.
• Optimise system performance, memory usage, and throughput.
• Work closely with DevOps and infrastructure teams to ensure smooth deployment and monitoring.
• Participate in code reviews, performance testing, and continuous improvement initiatives.

Required Skills & Experience

• Strong experience in Java and/or Rust in performance-critical environments.
• Strong performance experience
• Deep understanding of multithreading, concurrency, and memory management.
• Experience with real-time data processing and risk systems is a strong plus.
• Comfortable working in a hybrid environment (3 days onsite in Paris).
• Fluent in French and English

Nice to Have

• Background in financial markets, especially trading or risk management.
• Familiarity with networking protocols, Linux tuning, and performance profiling tools.

Please apply today if you are interested.