Senior Trading Systems Developer

Who are we?

FalconX is a pioneering team of operators, investors, and builders committed to revolutionizing institutional access to the crypto markets. Operating at the intersection of traditional finance and
cutting-edge technology, FalconX addresses the industry's foremost challenges: Navigating the digital asset market can be complex and fragmented, with limited products and services that support trading strategies, structures, and liquidity found in conventional financial markets. As a comprehensive solution for all digital asset strategies from start to scale, FalconX operates as the connective tissue empowering clients with seamless navigation through the ever-
evolving cryptocurrency landscape.

About The Role:

We're looking for a Senior Trading Systems Developer with a strong background in Java and Python to design and build next-generation testing and automation tools for our institutional trading platform. This role is central to enabling automated validation of order lifecycles, venue connectivity, and low-latency behavior across our trading stack.

You'll work closely with strategy developers, support engineers, and QA to deliver a robust automation framework that improves developer velocity, system reliability, and test coverage for trading workflows. Ideal candidates will have experience in OMS/EMS systems, deep knowledge of trading protocols like FIX, and a passion for building tools that bridge development and production operations.

• Design and implement frameworks for automated testing of order entry, modification, routing, and risk logic.
• Build tools in Java / Python or Rust to simulate and validate end-to-end trading workflows across low-touch and high-touch systems.
• Develop self-service systems for trade simulation, venue behavior replay, and FIX protocol testing.
• Work closely with front-office support and engineers to automate health checks, venue cert scripts, and regression test pipelines.
• Integrate test harnesses with CI/CD pipelines for pre-deployment safety checks and latency monitoring.
• Ensure systems are observable and fault-tolerant, with tooling that supports debugging and issue reproduction.
• Support and extend test capabilities for WebSocket, REST, and FIX APIs used across exchanges and internal strategies.

• 5+ years of experience building and testing distributed trading systems.
• Strong proficiency in Java (11+) and Python for building automation frameworks, trading system test harnesses, and performance tuning tools; experience with Rust is a plus.
• Experience with OMS/EMS platforms, ideally with exposure to order lifecycle, FIX messaging, and venue connectivity.
• Familiarity with test automation frameworks and continuous integration practices.
• Working knowledge of market structure, electronic trading workflows, and latency analysis.
• Proficiency with scripting (e.g., Python, Shell) to support testing and monitoring automation.
• Familiarity with high-performance messaging (e.g., Aeron, Chronicle, Kafka) and network debugging.

• Experience building tools for exchange certification, regression harnesses, or FIX simulators.
• Exposure to market-making systems, risk engines, or smart order routers.
• Prior work in crypto or electronic trading in traditional finance.

Notice at Collection and Privacy Policy

Applicants located in California and/or applying to a role based in California, please refer to our Notice at Collection and Privacy Policy here.

Inclusivity Statement

FalconX is committed to building a diverse, inclusive, equitable, and safe workspace for all people. Our roles are intended for people from all walks of life. We encourage all those interested in applying to our organization to submit an application regardless if you are missing some of the listed background requirements, skills, or experiences

As part of our commitment to inclusivity, FalconX would like to acknowledge that the EEOC survey has limited potential responses that you can select. For legal reasons, FalconX must use this language to align with federal requirements, however, we want to ensure that you are able to provide a response to our own voluntary survey questions about your identity that best aligns with your most true self.

FalconX is an equal opportunity employer and will not discriminate against an applicant or employee based on race, color, religion, national origin, ancestry, ethnicity, sex (including gender, pregnancy, sexual orientation, and gender identity), age, physical or mental disability, veteran or military status, genetic information, citizenship, or any other legally-recognized protected basis under federal, state, or local law.

Applicants with disabilities may be entitled to reasonable accommodation under the Americans with Disabilities Act and other applicable state or local laws. A reasonable accommodation is a change in the way things are normally done which will ensure an equal employment opportunity without imposing undue hardship on FalconX. Please inform FalconX's People team at , if you need assistance with participating in the application process.