# Mid-Level Full Stack Engineer - Backend Focused - Company: [Ansa]() - Location: San Francisco - Team: Engineering - Posted: February 7, 2025 ## Job description It’s time that payments work for merchants, not the other way around. Ansa is building a branded wallet solution to increase customer retention and unlock new growth opportunities. Ansa helps innovative and growing companies by providing an enterprise-grade, white-label stored value wallet platform paired with incentive tooling. Our platform enables our customers to turn stored value and loyalty programs into a powerful growth engine that increases customer retention, drives repeat purchases, and boosts margins, all without the cost and complexity of building it in-house. We’re seeking a Backend Engineer who wants end-to-end ownership of core backend systems and the chance to have an outsized impact on a product used by fast-growing consumer brands. You’ll make meaningful architectural decisions and work closely with leadership to influence both product and technical strategy. Does this sound like you? Let's chat! 🤔 What you will be doing? * Scale our core ledger that tracks both digital and physical money movement. * Scale our card network integrations that power in-store payments. * Build and maintain complex reconciliation infrastructure to make sure we never lose a cent across our partner bank, payment processors, merchants, and card networks. * Build and scale our financial reporting & accounting integrations that allow our merchants to close their books seamlessly. * Design and maintain our payment APIs and SDKs that make for frictionless integration. * Design and build features that prime us for enterprise-readiness, including SSO and RBAC. * Design and ship products that help merchants drive end-user adoption and engagement, creating a flywheel of user spend (i.e. our incentives engine and analytics). * Scale up our cloud infrastructure as we move towards fully containerized, blue-green deployment. * Own end-to-end design, implementation, and release of features. * Design and implement engineering processes. * Prototype new ideas and iterate towards the ideal user experience. * Contribute to our engineering infrastructure. * Help grow our engineering team 🎉 👋🏼 About you * You have 2+ years of experience independently owning and driving scalable, impactful projects end to end. * Based in the SF Bay Area (or willing to relocate!) and excited about working closely in-person with a tight-knit team. * Innately curious and brave enough to consider new payment paradigms or verticals for applications, can navigate low information environments. * Execution oriented, excited by the high-ownership nature of joining a team at this stage. * Interested in building a top class engineering culture from the ground up. * Appreciates and looks for elegant solutions but understands trade-offs of robust designs/engineering vs. moving fast. * Experience building fast, reliable cloud applications. 😊 Nice to haves * Operated at a growth stage startup before. * Familiarity with Golang web frameworks, AWS, Postgres. * Experience in building one of these areas: core ledgers, money movement platforms/services, and merchant facing APIs for in-app/online POS. * Bonus points if you have experience in mentoring other team members, and have previously worked closely with designers. 🎉 Our culture We’re a small team with a big mission. That means we have to hold ourselves to a high bar, by design. With limited resources and high ambition, excellence in quality, communication, and ownership, ambition isn’t optional — it’s how we move forward. * **Ownership** — if you see it, you take it. We don’t wait to be told. * **Nosiness** — curiosity across boundaries, asking questions, stepping beyond scope to solve problems. * **High agency** — proactive and self-directed. You move the work, not the other way around. * **Accountability** — we do what we say, and communicate proactively * **Relentless drive** — we work with focused intensity and follow through, even when it’s hard. * **Thoughtful execution** — shipping work that’s not just fast, but intentional. Think about how decisions today will affect us down the road. * **Pride in your craft** — we sweat the details and take our work personally, because it reflects who we are. * **Kindness and trust** — we give each other respect, empathy, and the benefit of the doubt. We assume good intent and act like teammates. 🥞 Benefits * Stellar health, dental, vision insurance coverage, including fertility benefits and One Medical. * Unlimited PTO and observed local holidays. * We also offer 401(k), healthcare FSA, and dependent care FSA to fit your needs. ## Apply [Apply on Ansa]() Canonical job page: