Blackbird Labs · 2 days ago
Senior Fullstack Engineer
New York
Full-time
Onsite
Senior Level
$180K/yr - $240K/yr
5+ years expBlackbird Labs is a loyalty and payments platform aiming to connect restaurants with their customers. They are seeking a Senior Fullstack Engineer to own the development of their restaurant payments terminal, ensuring reliable software for thousands of restaurants.
HospitalityCrypto & Web3Information TechnologyLoyalty ProgramsWeb3
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
Qualification
Required
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
Preferred
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
Company
Blackbird Labs
Blackbird is the loyalty company for restaurants, backed by A16Z, Union Square Ventures, Spark Capital, QED, American Express, Coinbase and others.
11-50 employees
H1B Sponsorship
Blackbird Labs has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (2)
2023 (1)
Funding
Current Stage
Growth StageTotal Funding
$85MKey Investors
Spark CapitalAndreessen HorowitzMulticoin Capital,Shine Capital,Union Square Ventures
2025-04-08Series B· $50M
2023-10-04Series A· $24M
2022-10-06Seed· $11M
Leadership Team
Ben Leventhal
Founder and CEO
Recent News
vcnewsdaily.com
2026-01-24
2026-01-24
2026-01-23
Company data provided by crunchbase