Senior Staff Full Stack Engineer ($500k - $1.5m salary)

Senior Staff Full Stack EngineerBaton Corporation is the development company that builds and operates the entire technology stack behind pump.fun, the largest memecoin launchpad in production today. The systems are low latency, high throughput, live under constant load, and break if you get them wrong.What You'll DoAs a Senior Staff Full Stack Engineer, you'll remain deeply hands-on while shaping the technical direction of our platform across frontend and backend systems. You'll own the hardest cross-stack problems - performance, scalability, correctness, and architectural coherence in a fast-moving environment.Architect and build high-performance systems across the entire stack, directly contributing production code in both frontend and backend layersDefine and evolve cross-stack architecture that scales with user growth, product complexity, and real-time interaction demandsLead complex, multi-surface initiatives end to end - from system design and RFC through implementation, rollout, and iterationDesign clean boundaries between frontend, backend, and blockchain infrastructure, ensuring systems remain modular and adaptable as we scaleAnticipate systemic bottlenecks (performance, data consistency, infra limits) and proactively design durable solutionsDrive improvements in performance, reliability, and observability across the stackRapidly prototype and validate new product ideas while ensuring that successful experiments evolve into production-grade systemsRaise the bar for engineering quality through design reviews, architectural guidance, and hands-on mentorshipAct as a technical anchor during critical launches, migrations, or incidents that span multiple parts of the stackImprove developer velocity by evolving tooling, CI/CD pipelines, testing strategy, and shared abstractionsWho You AreProven track record of owning large cross-stack systems serving real users under real loadDeep expertise in TypeScript, React, Next.js, and Node.js (or equivalent backend frameworks), with strong architectural instinctsComfortable reasoning about distributed systems, data modelling, caching, and client–server tradeoffsAble to move fluidly between frontend performance optimisation and backend system designKnown for solving ambiguous, cross-cutting technical problems that span multiple layers of the stackHigh-agency and execution-driven - you influence direction by building and shippingComfortable setting technical direction without stepping away from implementationExperience in high-growth or high-scale environments where systems must evolve rapidly without collapsing under complexityFamiliar with crypto, DeFi, or blockchain systems - especially real-time interactions, indexing, or wallet-integrated applicationsWhat it's like to work hereWe work in personHours can be long and unconventionalThe pace is intenseExpectations are high, and impact is immediateWorking at Baton is not for everyoneWhy Join Us?Unmatched ownership and autonomyExposure to systems operating at the edge of crypto scaleThe ability to ship fast and see real-world impact immediatelyIf you're motivated by responsibility, speed, and building products used by massive audiences, you'll feel at home here.