Senior Backend / Data / Payments Engineer

We exist to help people live healthier lives and save money while they do it. We’re building the first HSA/FSA that actually works for modern life by letting people spend pre-tax dollars on everyday wellness like the gym, recovery, and prevention.

The Role:
We’re looking for a product-minded backend engineer to help us build the financial and data infrastructure powering our product.
This is a high-ownership role working on systems at the intersection of payments, healthcare, and consumer products.
You’ll make foundational decisions on architecture, data models, and how we handle sensitive financial and health information.

What You’ll Do:
● Design and build core backend systems across payments, ledgers, and health eligibility.
● Own architectural decisions around data integrity, fault tolerance, and security.
● Build reliable integrations with external providers and APIs.
● Work closely with product and design to ship quick...