Seeking a Software Engineer in St. Louis, MO or Dayton, OH to support existing customers by building services, APIs, UI components, and internal tools that expose cost and usage data. Collaborate with Data and Analytics Engineers to develop automated, customer-facing billing solutions. Requirements include 3+ years of backend experience (Python, Go, Java, Node), API/microservice development, familiarity with AWS (API Gateway, Lambda, DynamoDB), containerization, and security. Preferred candidates have a master's degree, frontend skills (React), and experience with SaaS billing systems. The role emphasizes effective communication, initiative, and ensuring reliable, secure services. Benefits include flexible PTO, 100% 401k match, health coverage, wellness stipends, profit sharing, and equipment for productivity. The position starts mid-May 2026, with sponsorship available for exceptional candidates.