Backend Software Engineering

Software Engineer: Backend at ThatchThatch is rewiring how health benefits work. We build software that gives employees real control over how they use their benefits.We're looking for a Backend Software Engineer to design and build the core systems that power Thatch. This includes data models, fund flows, automations, and integrations that make healthcare benefits work reliably at scale. 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.What You'll DoDesign, build, and evolve backend systems that support enrollments, payments, payroll, and benefits management.Architect and maintain robust data models and fund flows that handle large volumes of financial transactions.Partner closely with product, operations, and other engineers to solve complex business problems.What We Are Looking ForExperience building and maintaining backend systems in a production environment.A track record of shipping systems with complex business and operational implications.Strong ability to reason about data models, workflows, and edge cases.Tools and Tech StackRuby on Rails for backend systems.React and TailwindCSS for the frontend.Small amounts of Python and backend JavaScript where appropriate.Prior Ruby experience is helpful but not required. Experience with HR, payroll, payments, or partner-facing systems.Ownership of systems with real operational or financial impact.We ship early, learn from real usage, and iterate.We value clarity over ceremony and quality over shortcuts.A collaborative pair programming session.A final conversation with engineering and company leadership.