Senior Frontend Engineer

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 powers the next generation of cross-border payment systems for institutions. With backing from Accel, Lightspeed, NfX, and other top-tier investors, we’re scaling at a remarkable pace. Our team has roots in J.P. Morgan, Goldman Sachs, FalconX, PayPal, Affirm, Polygon, Kraken, Nium, and more.

We are now embarking on a major revamp of the OpenFX application, the frontend interface through which clients, traders, and internal teams interact with our trading and payments infrastructure. This role is crucial in delivering a high-performance, intuitive, and secure user experience.

• Frontend Architecture: Lead the design and development of a modern, scalable frontend architecture that powers the OpenFX application.
• UI/UX Excellence: Work closely with product designers to build intuitive, elegant, and responsive interfaces for traders, risk managers, and institutional clients.
• Performance Optimization: Ensure low-latency, real-time dashboards for trading, risk monitoring, and analytics. Optimize rendering and data visualization at scale.
• Integration: Collaborate with backend engineers (Core Trading team) to integrate APIs, market data feeds, risk analytics, and post-trade workflows into the UI.
• Modern Tooling: Define and drive adoption of best practices in frontend frameworks, state management, testing, and performance monitoring.
• Mentorship: Guide junior and mid-level frontend engineers. Promote best practices in accessibility, performance, and maintainability.
• Quality & Security: Build secure, testable, and maintainable frontend components aligned with financial system requirements.
• Collaboration: Partner with product managers, designers, and engineers across the company to deliver a seamless client and internal experience.

• Bachelor’s or Master’s degree in Computer Science, Engineering, Design, or related field (or equivalent experience).
• 5+ years of experience in frontend development, with at least 2 years in a senior or lead role.
• ≥ 3 years of experience building fintech, trading, or enterprise financial applications.
• Deep expertise in modern frontend frameworks (React, TypeScript).
• Strong understanding of state management (Redux, Recoil, Zustand, or similar) and real-time data handling (WebSockets, GraphQL subscriptions, streaming APIs).
• Experience building enterprise-grade dashboards or trading/financial applications is highly preferred.
• Strong grasp of performance optimization techniques (code splitting, caching, virtualization, memoization).
• Familiarity with data visualization libraries (D3.js, Recharts, Highcharts, etc.).
• Knowledge of security and compliance considerations in frontend applications handling sensitive financial data.

• Experience in real-time trading UIs (market data, order entry, risk dashboards).
• Strong eye for design and collaboration with UI/UX teams.
• Contributions to open-source frontend frameworks, tools, or libraries.
• Familiarity with backend systems (pricing engines, OMS, risk management) to better integrate with the Core Trading stack.
• Experience deploying frontend apps in cloud-native environments (AWS, Cloudflare, Kubernetes).

• Competitive compensation, including equity.
• Opportunity to own the full revamp of the OpenFX application, a critical client-facing product.
• A highly collaborative and innovative work environment with peers from top financial and tech companies.
• The chance to set the frontend engineering direction for a rapidly scaling fintech.