Software Engineer: Backend

Thatch builds software that gives employees control over how they use their health benefits. The Backend Software Engineer will design, build, and maintain core systems for enrollments, payments, payroll, benefits management, data models, fund flows, automations, and external integrations, with a focus on reliability, compliance, and scalability.

Responsibilities:

• Design, 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
• Build integrations with payroll providers, banks, insurance carriers, and other external partners
• Improve operational rigor through automation, tooling, monitoring, and observability
• Partner closely with product, operations, and other engineers to solve complex business problems
• Take ownership of production systems, including reliability, debugging, and long-term maintainability

Requirements:

• Experience 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
• Comfort operating in ambiguous problem spaces with cross-functional tradeoffs
• Experience mentoring other engineers or setting technical direction
• Work in healthcare, finance, or other complex or regulated domains
• Experience with HR, payroll, payments, or partner-facing systems
• Ownership of systems with real operational or financial impact
• Prior Ruby experience is helpful but not required