Senior/Staff Fullstack Engineer at Blackbird Labs

<h3>About Blackbird:</h3><p style="min-height:1.5em">Blackbird Labs is a loyalty and payments platform establishing meaningful connections between the world’s best restaurants and their customers.</p><p style="min-height:1.5em"></p><p style="min-height:1.5em">Served up in 2022 by Ben Leventhal, co-founder of Eater and Resy, Blackbird offers a fully customizable loyalty programming platform for restaurants and a consumer app designed to make every guest feel like a bonafide VIP no matter where they dine. Backed by Union Square Ventures, a16z, Amex Ventures, Variant Fund, and other forward-thinking investors, Blackbird is out to revolutionize the restaurant industry.</p><p style="min-height:1.5em"></p><h3>About Our Team:</h3><p style="min-height:1.5em">At Blackbird, our values guide everything we do and our talent principles define the key traits we seek in our employees.</p><p style="min-height:1.5em"></p><p style="min-height:1.5em">We have <strong>passion for our product</strong> – committed to our mission and instinctively think like and go the extra mile for our customers. We are <strong>elite performers</strong> – striving for excellence, going above and beyond to achieve exceptional results, and learning quickly with horsepower, drive, and grit. We <strong>make others better</strong> – taking initiative to elevate others, giving and receiving feedback, and championing a culture of growth. We hold one another accountable to living out our talent principles as we march together to achieving our mission.</p><p style="min-height:1.5em"></p><h3>About the Job</h3><p style="min-height:1.5em">Blackbird is looking for a Senior Fullstack Engineer to own Flycar, our restaurant payments terminal used by thousands of restaurants. You'll build the software servers and managers rely on during every service, where downtime means a dining room that can't close checks.</p><p style="min-height:1.5em"></p><p style="min-height:1.5em">This is a Next.js/TypeScript monorepo powering multiple apps across payments, loyalty, and restaurant operations. You'll work primarily in Flycar but contribute across the platform.</p><p style="min-height:1.5em"></p><p style="min-height:1.5em">Responsibilities</p><ul style="min-height:1.5em"><li><p style="min-height:1.5em">Own end-to-end development of Flycar - UI, API integration, WebSocket flows, and fallback handling when things go wrong</p></li><li><p style="min-height:1.5em">Build interfaces that work reliably across FSR and QSR environments with inconsistent hardware, spotty networks, and dozens of POS configurations</p></li><li><p style="min-height:1.5em">Drive frontend architecture decisions — you'll shape how we build, not just what we build</p></li><li><p style="min-height:1.5em">Debug real-time payment flows that span our terminal, mobile app, and backend services</p></li></ul><p style="min-height:1.5em"></p><p style="min-height:1.5em">Requirements</p><ul style="min-height:1.5em"><li><p style="min-height:1.5em">6+ years w