Founding Full-Stack Engineer

Founding Full-Stack EngineerLocation: San Francisco, CA (Hybrid, 3–5 days/week in-office) Company Stage of Funding: Seed (~$6M raised) Office Type: Hybrid Salary: $220,000 – $280,000 + Equity (0.1% – 1.0%)Company DescriptionOur client is an early-stage fintech infrastructure company building a modern platform for global money movement using stablecoins. Their mission is to enable faster, cheaper, and more reliable cross-border transactions for large B2B companies across the US and Europe.The company is founded by repeat founders with prior experience building and scaling products at leading fintech companies. They have already built the core product, secured early customers with meaningful transaction volume, and recently raised ~$6M in seed funding from top-tier investors.With a small, high-caliber team and strong early traction, this is a rare opportunity to join at the inflection point between product completion and scale—owning foundational systems in a mission-critical financial platform.What You Will DoOwn full-stack development end-to-end, from architecture to productionDesign and build highly reliable systems for global payments and transaction processingDevelop event-driven systems for ledgering, compliance, and risk managementWork directly with customers to understand requirements and iterate on product featuresBuild and maintain APIs and integrations for financial infrastructureMake key technical decisions across backend, frontend, and infrastructureBalance speed and scalability while shipping production-ready systemsUse modern tools and AI-assisted development workflows to improve velocityCollaborate closely with founders on product direction and technical strategyHelp define engineering culture, processes, and hiring standardsIdeal Candidate Background3–8 years of experience in full-stack or backend engineeringStrong experience building production systems end-to-endPrior experience at a startup or high-growth environmentExperience working on payments, fintech, or compliance-related systemsComfortable working across multiple languages and frameworksStrong system design and architecture fundamentalsExperience integrating APIs and building scalable backend systemsProven ability to take ownership and ship quicklyPreferredExperience at fintech or payments companies (e.g., Stripe, Coinbase, Adyen, etc.)Familiarity with distributed systems, event-driven architectures, or ledgering systemsExperience working directly with customers or product stakeholdersStrong product intuition and ability to prioritize based on user needsExperience using AI-assisted development tools (e.g., Cursor)Background from top-tier startups or strong technical environmentsCompensation and BenefitsBase salary: $220,000 – $280,000Equity: 0.1% – 1.0%Visa sponsorship available (case-by-case, preference for US-based candidates)Hybrid work flexibility (SF-based)Direct collaboration with experienced repeat foundersOpportunity to build core financial infrastructure from the ground upEarly-stage equity with meaningful upsideWhy JoinThis is a rare opportunity to join a fintech startup at the exact moment where product meets scale.You'll work directly with experienced founders, own critical systems handling real transaction volume, and help define the future of global payments infrastructure.If you're a high-agency engineer who thrives in early-stage environments and wants to build mission-critical systems from scratch, this role offers both impact and upside.