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# Fullstack Engineer

- **Company:** BLACKBIRD LABORATORIES INC.
- **Location:** New York, United States
- **Experience:** Expert
- **Salary:** $180,000.0 - $240,000.0
- **Contract:** Permanent contract
- **Skills:** Software Debugging, Fault Tolerance, Mobile Application Software, Blockchain, Next.js, TypeScript, WebSocket, Datadog, ReactJS, Backend, Real Time Data, Web3.js, Api Management
- **Published:** September 4, 2026
- **Apply:** https://startup.jobs/senior-staff-fullstack-engineer-blackbird-labs-inc-7847285

## About the Role

* 6+ 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

## Description

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


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