API jobs

About Us

OpenFX is on a mission to move money as freely as data, unrestricted by time zones, banking hours, or legacy systems. We are building the infrastructure that will power the next generation of cross-border payment systems for institutions. Our execution has been exceptional, and we’re scaling at a remarkable pace. Our team comes from world-class institutions, including J.P. Morgan, Goldman Sachs, FalconX, PayPal, Affirm, Polygon, Kraken, and Nium. Accel, Lightspeed, NfX, and other top-tier investors back us.

We are seeking a Software Engineer to join our Core Trading team, the group responsible for building the backbone of our high-performance trading and risk management platform. You will work on critical systems powering real-time trading, market data processing, risk management, and post-trade analytics.

Responsibilities & Expectations

• System Development: Contribute to the design and implementation of trading components such as Market Data Feed Handlers, Pricing Engines, Quote Distribution, Smart Order Routing, and Order Management Systems.
• Risk & Analytics: Implement pre-trade, pre-hedge, and real-time risk checks; support post-trade analytics, including PnL, reconciliation, and LP performance.
• Performance: Build low-latency, high-throughput services to handle real-time FX trading workflows.
• Collaboration: Work closely with product managers, quantitative developers, and senior engineers to translate business needs into reliable systems.
• Code Quality: Write clean, well-tested, and maintainable code. Participate in code reviews and adhere to engineering best practices.
• Problem Solving: Investigate production issues, propose fixes, and contribute to continuous system reliability improvements.

Qualifications

• Bachelor’s degree in Computer Science, Engineering, or a related field (or equivalent experience).
• 2–4 years of professional software engineering experience.
• Proficiency in at least one modern programming language (Python, Go, Rust, or TypeScript preferred).
• Solid understanding of algorithms, data structures, and distributed systems.
• Exposure to financial/trading systems, payment platforms, or other low-latency systems is a plus.
• Experience with SQL/NoSQL databases and API development.
• Strong debugging and problem-solving skills.
• Eagerness to learn trading systems, financial markets, and risk management.

What Will Help You Stand Out

• Hands-on experience with market data systems, order matching engines, or risk engines.
• Familiarity with cloud environments (AWS, GCP) and container orchestration (Kubernetes).
• Understanding of financial products, particularly FX or crypto.
• Contributions to high-performance system development projects.

What We Offer

• Competitive compensation, including equity.
• Opportunity to shape the core infrastructure of a rapidly scaling fintech.
• Collaborative environment with colleagues from top-tier financial and tech companies.
• High ownership, fast-paced growth, and direct impact on the future of cross-border finance.