Senior Backend Engineer (L3)- Revenue

About the company

OpenFX is a fintech infrastructure startup that provides a stablecoin-native network and API-based solutions for instant, 24/7 cross-border foreign exchange and payments.

About this role

<h2>About Us</h2> <p>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. The team's execution has been exceptional, and we're scaling at a remarkable pace. Our stellar early team comes with experience in companies like J.P. Morgan, Goldman Sachs, FalconX, Paypal, Affirm, Polygon, Kraken, Nium &amp; others. We're backed by Accel, Lightspeed, NfX and other top-tier investors.</p> <h2>Role Overview</h2> <p>We're hiring a Senior Backend Engineer for our Hedging team — the team that owns the risk OpenFX carries.</p> <p>Hedging owns inventory and exposure management, risk management, hedging positions across venues through smart routing strategies, market making, Cost, PnL and net revenue calculation. Every trade a client places creates exposure, and this team decides what we hold, what we hedge, where we hedge it, and what it costs us.</p> <p>You will own significant parts of the Risk Management Engine and Smart Hedging end-to-end — design, build, ship, and operate. This is a hands-on senior IC role with high ownership and accountability - the routing and exposure logic you write today shows up in tomorrow's net revenue.</p> <p>We're specifically looking for someone with a trading background — you've built systems where a position had to be accurate and a hedge had to fire in time, and where a bug meant real money. Think a crypto exchange, brokerage, or trading platform (CoinDCX, Groww, CoinSwitch Kuber, or similar).</p> <h2>Key Responsibilities</h2> <ul> <li>Design, build, and operate services across the risk path — inventory and exposure tracking, hedge decisioning, venue routing, and WAC / PnL / net revenue calculation.</li> <li>Own features end-to-end: scoping, technical design, delivery, rollout, and the operational health of what you ship.</li> <li>Drive work to closure with Product, Design, and Operations. You are accountable for adoption, not just delivery.</li> <li>Act as a product engineer — scope a problem statement, understand its product impact, and take the hard prioritisation calls.</li> <li>Build for correctness and timeliness on a live risk path. Understand and weigh trade offs.</li> <li>Integrate with external venues and liquidity providers, and build smart routing strategies that hold up when a venue degrades or goes away.</li> <li>Instrument what you build — logging, metrics, and alerting that make exposure, positions and hedge behaviour predictable in production.</li> <li>Design for failure: retries, idempotency, reconciliation, and safe recovery when a venue or downstream dependency misbehaves.</li> <li>Raise the bar through code review and design feedback, and mentor L1/L2 engineers on the team.</li> <li>Build a healthy engineering-excellence and tech-debt backlog — surface the right items, work with the EM on a resolution plan, and drive them to closure.</li> <li>Participate in on-call, respond to incidents with urgency, and turn post-mortems into durable fixes.</li> <li>Work directly with the Trading team, treasury and finance to connect what you build to exposure, risk and net revenue.</li> </ul> <h2>What we are looking for</h2> <p><strong>Must-haves:</strong></p> <ul> <li>4–6 years of experience building and operating production backend systems.</li> <li><strong>A trading background</strong> — you've worked at a trading company, exchange, or brokerage and have built systems on a live trade, order or risk path (e.g. CoinDCX, Groww, CoinSwitch Kuber, or similar).</li> <li>Strong fundamentals in system design, data modelling, and API design, with practical experience in distributed systems.</li> <li>Solid command of object-oriented programming principles and low-level design patterns.</li> <li>Solid production engineering instincts — observability, debugging complex systems, performance tuning, and incident response.</li> <li>Comfort working with money and numbers where being approximately right is not good enough — positions, cost basis and PnL have to reconcile.</li> <li>Comfort with <strong>abstract, ambiguous problems</strong> — you can turn a vague mandate into scoped, sequenced deliverables without waiting for someone to specify it for you.</li> <li><strong>Hands-on and high agency.</strong> You find the important problem and go solve it rather than waiting to be assigned it.</li> <li><strong>Heavy AI user.</strong> You use AI coding tools with real technique and get materially more done because of it.</li> <li><strong>Data-driven</strong>, and a clear written communicator — we are async-heavy and globally distributed.</li> </ul> <p><strong>What helps you stand out:</strong></p> <ul> <li>Experience with hedging, exposure or risk management systems specifically.</li> <li>Experience with multi-venue execution, smart order routing, or market making.</li> <li>Experience with PnL, cost-basis or position-keeping logic, and reconciliation against external venues.</li> <li>Experience with FX, multi-currency systems, or cross-border payments.</li> <li>Experience with market data, order books, or market microstructure.</li> </ul> <h2>What Success Looks Like</h2> <ul> <li>The services you own on the risk path are reliable, well-tested, and observable — exposure is accurate, hedges fire as intended, and issues are caught before they cost us money.</li> <li>You ship complex features end-to-end from technical design to execution, delivery and adoption.</li> <li>The team moves faster because of your code reviews, documentation, and technical judgment.</li> <li>L1/L2 engineers around you grow measurably faster.</li> <li>You become a go-to engineer for the risk path.</li> <li>You raise the bar for the Hedging team.</li> </ul> <h2>What We Offer</h2> <ul> <li>Competitive salary and benefits package.</li> <li>Equity in a rapidly growing company.</li> <li>Opportunity to work in a fast-paced startup a