[8BE] Senior Fullstack Engineer (.NET + React)
Build a shipping and delivery service for a B2B commerce platform, owning Shopify integrations, React interfaces, and.NET services while connecting carrier APIs and order systems.
For most people, health insurance is something that happens to them: a plan chosen by someone else, with little room to fit their life. Thatch is changing that. We help companies give every employee a real healthcare budget instead of a one-size-fits-all plan, so people can choose the coverage and care that works for them, and employers get predictable costs they can control.
It’s a simple idea, but making it real means solving hard problems across healthcare, payments, and technology, and we’re just getting started. We look for people who like solving complex problems, use good judgment, and are comfortable working through ambiguity. People here care deeply about our customers, take real responsibility for what gets built, and are driven by doing work that matters.
Thatch is rewiring how health benefits work. We build software that powers employer-funded coverage and gives employees real control over how they use their benefits.
We’re looking for a Full Stack Software Engineer to own broad product surfaces, from concept to production. You’ll build across the frontend and backend systems that power onboarding, benefits management, and payments. This work touches real money and real healthcare decisions. Correctness and reliability matter, but so does making the experience feel simple for the people using it.
We organize engineering around the people we serve: members, employers, and partners, so teams own end-to-end experiences and ship with speed and accountability.
We hire engineers across multiple levels and care most about the scope you’ve owned, the impact you’ve had, and how you make decisions.
Prior Ruby experience is helpful but not required. We care far more about how you think than which language you know.
We aim to keep the process thoughtful, rigorous, and efficient. Most candidates complete it within three weeks. You can expect:
Build a shipping and delivery service for a B2B commerce platform, owning Shopify integrations, React interfaces, and.NET services while connecting carrier APIs and order systems.
Build and ship full-stack products from AI-generated prototypes to production, owning architecture, code quality, testing, and mobile releases while helping establish the technical foundation for a growing product portfolio.
Design and deliver secure, scalable healthcare applications across React and TypeScript frontends and Node.js/NestJS services, integrating APIs and AI workflows while owning features through testing and release.
Develop end-to-end features for a large-scale digital commerce platform, spanning Java and Spring backend services, React frontends, cloud-native operations, legacy modernization, and AI-assisted engineering practices.
Build and maintain full-stack software used in classrooms, working primarily with React, TypeScript, Node.js, and AWS while owning production reliability, improving code quality, and mentoring engineers.