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

WHO WE ARE Baton Corporation is the development company that builds and operates the entire technology stack behind pump.fun https://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 DO As 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 layers - Define and evolve cross-stack architecture that scales with user growth, product complexity, and real-time interaction demands - Lead complex, multi-surface initiatives end to end - from system design and RFC through implementation, rollout, and iteration - Design clean boundaries between frontend, backend, and blockchain infrastructure, ensuring systems remain modular and adaptable as we scale - Anticipate systemic bottlenecks (performance, data consistency, infra limits) and proactively design durable solutions - Drive improvements in performance, reliability, and observability across the stack - Rapidly prototype and validate new product ideas while ensuring that successful experiments evolve into production-grade systems - Raise the bar for engineering quality through design reviews, architectural guidance, and hands-on mentorship - Act as a technical anchor during critical launches, migrations, or incidents that span multiple parts of the stack - Improve developer velocity by evolving tooling, CI/CD pipelines, testing strategy, and shared abstractions WHO YOU ARE - Proven track record of owning large cross-stack systems serving real users under real load - Deep expertise in TypeScript, React, Next.js, and Node.js (or equivalent backend frameworks), with strong architectural instincts - Comfortable reasoning about distributed systems, data modelling, caching, and client–server tradeoffs - Able to move fluidly between frontend performance optimisation and backend system design - Known for solving ambiguous, cross-cutting technical problems that span multiple layers of the stack - High-agency and execution-driven - you influence direction by building and shipping - Comfortable setting technical direction without stepping away from implementation - Experience in high-growth or high-scale environments where systems must evolve rapidly without collapsing under complexity - Familiar with crypto, DeFi, or blockchain systems - especially real-time interactions, indexing, or wallet-integrated applications WHAT IT'S LIKE TO WORK HERE - We work in person - Hours can be long and unconventional - The pace is intense - Expectations are high, and impact is immediate - Working at Baton is not for everyone WHY JOIN US? - Unmatched ownership and autonomy - Exposure to systems operating at the edge of crypto scale - The ability to ship fast and see real-world impact immediately If you’re motivated by responsibility, speed, and building products used by massive audiences, you’ll feel at home here.