Staff Software Engineer — Full-Stack, Founding Team

Annuity Health, LLC is a profitable healthcare revenue cycle management company focused on building a new technology platform from scratch. The Staff Software Engineer will be responsible for creating a greenfield platform, developing agent-driven workflows, and automating processes to enhance operational efficiency.

Responsibilities:

• Build a greenfield platform end to end — data pipelines, services, and product surfaces — and put it in the hands of the teams running revenue cycle work every day
• Build agent-driven workflows and automation that take real work off those teams’ plates, plus the analytics that show exactly where provider revenue is going and why
• Build safe automation at scale, with the evals to prove it. Automation that touches provider revenue has to be measurably reliable, not just good in a demo
• Turn ambiguous, high-value operational problems into working software
• Write the specs, patterns, and agent context that make the whole team faster, not just yourself
• Help interview the next wave of engineers and shape how this team works
• Work directly with the CTO; the distance between you and company-level decisions is one conversation

Requirements:

• 7+ years building and shipping production full-stack software
• Deep fundamentals: system design, testing discipline, and the code-review judgment to evaluate large volumes of generated code
• Agentic coding tools are already your default — you can show your workflow and explain how it makes you measurably faster
• A builder's disposition toward ambiguity: you'd rather define the problem and own the outcome than execute a spec someone else wrote
• Healthcare, RCM, or EDI experience (835/837 transactions, payer workflows, denial management)
• Hands-on Azure and/or Databricks experience
• Experience with data-intensive systems — pipelines, large-scale file ingestion, event-driven processing