Senior/Staff Fullstack Engineer

Senior Fullstack Engineer

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. 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.

Responsibilities

• Own end-to-end development of Flycar - UI, API integration, WebSocket flows, and fallback handling when things go wrong
• Build interfaces that work reliably across FSR and QSR environments with inconsistent hardware, spotty networks, and dozens of POS configurations
• Drive frontend architecture decisions — you'll shape how we build, not just what we build
• Debug real-time payment flows that span our terminal, mobile app, and backend services

Requirements

• 5+ years with React and TypeScript
• Experience with real-time data (WebSockets, polling) and graceful degradation on unreliable networks
• Track record shipping software where failure has immediate, visible consequences — payments, POS, fintech, or similar
• Comfort working across the stack: reading API contracts, debugging queries, reasoning about system design
• Strong ownership instincts in a small, fast-moving team where scope is fluid

Nice to Haves

• Experience with payments infrastructure, POS systems, or restaurant/hospitality tech
• Background in multi-tenant systems or hardware-constrained environments (terminals, kiosks)
• Exposure to blockchain, crypto, or web3
• Experience with Datadog, Amplitude, or similar observability/analytics platforms

Pay Transparency Notice & Benefits

Depending on your work location and experience the target annual salary for this position can range from: [ $180,000-$240,000 ] USD. This range does not include the equity component of the overall compensation package. Disclosure in accordance with New York City's Pay Transparency Law.

Commitment to Equal Opportunity

Blackbird Labs is committed to diversity in its workforce and is proud to be an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, creed, gender, national origin, age, disability, veteran status, sex, gender expression or identity, sexual orientation or any other basis protected by applicable law. Blackbird will also consider for employment qualified applicants with criminal histories in a manner consistent with applicable law. For US applicants, you may view the Know Your Rights notice here. Additionally, Blackbird participates in the E-Verify program.

Join us and find out what the best work of your career could look like here at Blackbird.