Full-Stack Software Engineer

About the RoleWe’re hiring full-stack/backend engineers who love simplifying complex systems, unifying fragmented data, and building large-scale infrastructure. You'll be hands-on with core backend systems, syncing financial data across fragmented legacy software in real time. The work is roughly 80-90% backend. The engineering team is flat: one engineering lead, one being promoted internally to a second lead, and everyone else working across products. No specialization yet. You'll own features end-to-end as an IC with no traditional manager layer. You'll be closely intertwined with the product, talking directly to customers and shipping features they depend on.Technical challenges are substantial: unifying dozens-to-hundreds of fragmented systems under a single standard, connecting to on-prem systems (SQL-based, DLL-based, API-based) built 20-40 years ago, handling millions of API requests per day, building reliable APIs on top of legacy systems with SLA enforcement, and creating scalable testing frameworks across 1,000+ endpoints. The team ships daily based on real customer feedback.What You'll OwnBuild and maintain the unified API layer that connects construction ERPs to modern software (legacy SQL, DLL, and API-based systems from 20-40 years ago)Ship core backend systems for ERP Sync, AP Automation, Expense Management, and Vendor Management, with frontend work on apps that dog-food the APISolve real-time data sync challenges, including web-socket implementations for systems that lack native webhooksBuild scalable testing frameworks to catch edge cases across 1,000+ endpoints Engage directly with customers and ship features daily based on real feedbackRequirementsMust-Have1-5 years of backend or full-stack engineering experience (exceptional new grads with strong intern/co-op experience considered)CS degree from a strong engineering programFamiliarity with cloud infrastructure (AWS preferred)Self-motivated, high-ownership, low-ego operator who can ship in a fast-paced, intense team environmentPumped to work in-person 5 days a week in SF (remote optional only for exceptional candidates outside the Bay Area)Nice-to-Have1. Prior startup or founding engineering experience at pre-Seed through Series C2. Top 20-30 school CS background. UWaterloo is a particularly strong signal.3. Serious athlete background (college or high school competitive sport)4. Competitive academic background: high GPA, meaningful honors, debate, or other competitive extracurriculars Multi-year tenure at a previous role (signals depth and follow-through)Benefits & Perks90% healthcare cost coverage with multiple plan options100% 401k match up to 4% of annual salary Sizable relocation bonus for candidates outside Bay AreaOn-site gym with Peloton, squat rack, Tempo, and yoga setupVisa sponsorship for H1B, TN, and other visa types Fill in the form, we will contact you...