Staff Engineer / API Lead — Mission-Driven AI Startup (New York City) Want to own the core APIs powering an AI product used by millions around the world? A fast-growing language learning startup (name currently under wraps 🤫) is gearing up for a pivotal 2025 and needs a Staff Engineer / API Lead to architect, build, and scale the heart of their platform. If you're the kind of engineer who loves big technical challenges, thrives in high-output environments, and wants your work to have real human impact - this is the place. What You’ll DoOwn the design and evolution of the company’s core APIs, from architecture to implementationBuild scalable, reliable backend services that power real-time, AI-driven learning experiencesLead technical direction across teams; set standards, review designs, mentor engineersDrive platform performance, observability, cost optimisation, and cloud infrastructure decisionsCollaborate directly with product and engineering leadership to shape the roadmapStay hands-on: writing high-impact code, improving systems, and solving tough technical problemsWhy This Role Is UniqueYou will literally own the backbone of the platform—the APIs that everything else relies onJoin during a defining hyper-growth phase where technical decisions have huge leverageHigh autonomy, high trust, and the chance to influence engineering culture from the ground upDirect collaboration with founders and engineering leadershipMission-first environment focused on unlocking learning for kids everywhereWhat You Bring7–10 years of backend or distributed systems experience, ideally at scaleDeep expertise with AWS, including services, architecture patterns, and cost-aware designStrong experience with Kubernetes, containers, and modern cloud infrastructureProven experience designing and scaling APIs (REST, GraphQL, gRPC—any production-grade interface)Strong coding skills in Python, Go, or similar backend languagesExperience influencing or leading technical direction across teamsStartup-ready mindset: ownership, speed, and a bias for high-impact executionBonus: Familiarity or interest in Rust for systems-level or performance-sensitive componentsWho You AreA strategic thinker who still loves writing codeSomeone who enjoys architecting complex systems and making them elegantA force multiplier—your impact makes the whole team faster and betterComfortable in fast-paced, ambiguity-heavy environmentsDrawn to mission-driven work where the results matterLocation & EligibilityHyrbid in New York City (this role requires close collaboration with the founding and engineering teams)Full US work authorization required (no sponsorship)If you want to build core systems, shape engineering standards, and see your work translate into life-changing tools for kids learning languages—this is the opportunity.
Francis Alexander