Senior Trading Systems Developer

FalconX; New York (NY); On-site; USD 179,000 - 226,000; Full time

Job summary

FalconX is seeking a Senior Trading Systems Developer in New York City to architect and build our low-latency electronic trading execution platform. You will work on core components on the hot path of the execution stack, including market-data ingestion, OMS/EMS, risk checks, and venue connectivity.

You will design scalable services in Rust and Java, integrate with exchange APIs via FIX/REST/WebSocket, and collaborate with quant, trading, infra and data teams in a fast-paced Agile environment.

Qualifications

• 5+ years of experience in trading systems (ownership preferred).
• Strong background in Rust and/or Java (11+) with performance profiling, concurrency, or memory-safe design.
• Experience building EMS/OMS with microsecond latency.
• Deep understanding of order state machines and execution workflows.
• Experience with high-throughput messaging frameworks like Aeron.
• Hands-on integration with FIX, REST, and WebSocket APIs.
• Experience with relational databases (PostgreSQL, MySQL).

Responsibilities

• Build scalable services using Rust and Java optimized for latency and throughput.
• Develop low latency EMS/OMS components and market-data pipelines on Aeron.
• Integrate with exchange APIs using FIX, REST, WebSocket.
• Model complex order lifecycles and execution workflows.
• Design and maintain high-throughput messaging schemas (SBE) and communication.
• Own full SDLC for your domain from design to monitoring.
• Collaborate with quant, trading, infra, and data teams.
• Participate in Agile planning and execution cadence.

Skills

Rust

Java

Low-latency

Concurrency

Aeron

FIX/REST/WebSocket

Memory-safe design

Tools

Aeron

FIX

REST

WebSocket

PostgreSQL

MySQL

Job description

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.

The Role We’re looking for a Senior Trading Systems Developer with strong experience in low-latency Rust and/or Java to architect and build our electronic trading execution platform. This platform will be central to supporting complex electronic trading algos, such as automated market making on exchanges and quant trading strategies. You will work on the core components that sit on the hot path of our execution stack — including market-data ingestion, order management, risk checks, session control, and high-throughput venue connectivity. You’ll be designing and developing scalable, low-latency components that are resilient under heavy load and tightly integrated with our execution stack and internal trading infrastructure.

What You’ll Do

• Build scalable services using Rust and Java, optimized for latency and throughput.
• Responsible for development of low latency services on Aeron, including OMS/EMS components, market-data pipelines, and venue gateway connectivity.
• Integrate with exchange APIs using FIX, REST, WebSocket, and venue-specific protocols.
• Model complex order lifecycles, state machines, and execution workflows into resilient, observable, fault-tolerant services.
• Design and maintain SBE message schemas and high-throughput message-bus communication on Aeron.
• Own full SDLC for your domain: design, test, ship, monitor.
• Collaborate closely with quant, trading, infra, and data teams to ensure the execution stack meets performance, safety, and reliability targets.
• Operate in a fast-paced Agile environment, contributing to team structure, sprint planning, and execution cadence

What We’re Looking For

• 5+ years of experience in trading systems, ideally with prior design ownership
• Strong background in Rust and/or Java (11+), including performance profiling, concurrency, lock-free programming, GC tuning, or memory-safe systems design.
• Experience in building EMS and execution systems that operate in microseconds latency range
• Deep understanding of order state machines, execution workflows, and institutional trade lifecycle mechanics
• Strong experience with Aeron or other high-throughput messaging frameworks.
• Hands‑on experience integrating with FIX, REST, and WebSocket APIs.
• Strong experience designing normalized schemas and working with relational databases (e.g., Postgres, MySQL)
• Experience with low‑touch and high‑touch trading (MM, RFQ, internalization).
• Experience building scalable trade data pipelines and automated reconciliation systems to support real‑time monitoring, trade surveillance, and audit compliance.
• Experience with Agile delivery, sprint planning, and team leadership
• Passion for clean architecture, maintainability, and performance

Bonus Points

• Prior experience in crypto markets or electronic trading in traditional finance.
• Experience integrating execution platforms with strategy containers, risk engines, or smart order routers.
• Knowledge of FIX protocol nuances and connectivity to major exchanges.
• Exposure to container orchestration, service mesh, or hybrid deployment architectures.

The base pay for this role is expected to be between $179,000-$226,000 USD in the New York City Area. This expected base pay range is based on information at the time this post was generated. This role will also be eligible for other forms of compensation such as a performance linked bonus, equity, and a competitive benefits package. Actual compensation for a successful candidate will be determined based on a number of factors such as location, skillset, experience, qualifications and the level at which the candidate is hired.

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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 [e-mail], if you need assistance with participating in the application process.