Senior/Staff Software Engineer

Role Description

We're hiring a Staff / Senior Backend Engineer to join our expanding engineering team spanning the Subrogation and Coordination of Benefits (COB) product lines. This is a joint posting for both lines — you'll join one of them, matched on your background and team need.

• Set technical direction for backend development.
• Design, build, and operate scalable, reliable cloud-native services and distributed systems that run at scale on AWS, GCP, or Azure.
• Work alongside AI coding agents, directing and reviewing their output while maintaining quality.
• Join a highly visible engineering team trusted to solve complex, high-stakes problems.
• Influence product direction and work directly with customers.
• Develop in Rust; strong Java, Go, or Scala engineers are a great fit.
• This is hands-on product engineering — building and owning production services and features.

What You’ll Do

• Set the architecture and technical direction for backend systems on your product line.
• Ship cloud-native services that power accurate, high-stakes payment-integrity decisions.
• Turn ambiguous product intent into concrete, well-sequenced backend design.
• Own your services in production — reliability, observability, and performance at scale.
• Raise the engineering bar and grow the team's programming maturity as we scale Rust.
• Set the standard for AI-driven delivery, keeping delivery fast and under human oversight.
• Simplify labor-intensive workflows by applying ML techniques to large volumes of data.
• Balance new customer value with technical-debt cleanup to keep the product sustainable.
• Partner with PM, ML/DS, QA and UX to shape product direction and outcomes.
• Mentor engineers and act as the backend voice in cross-team planning.
• Work directly with customers on systems that impact millions of lives.

Qualifications

• 10+ years of backend engineering for Staff, 6+ years for Senior (full-stack experience a plus).
• Strong application design and system architecture across complex backend systems.
• Proven ability to author technical design documents that satisfy engineers and product partners alike.
• Substantial production experience in Rust, Java, Go, or Scala; Rust highly desired.
• Proven experience designing, building, and operating distributed systems at scale.
• Hands-on with containers and orchestration (Docker, Kubernetes) in production.
• Ownership of CI/CD pipelines for your own services — building them, not just consuming them.
• Production experience on at least one major cloud — AWS, GCP, or Azure.
• Strong SQL and relational database skills; comfort across NoSQL and caching layers.
• Hands-on experience with agentic engineering tools and workflows in production.
• Proven ability to read complex code and own and continually improve code quality.
• Strong cross-functional collaboration with engineering, PM, ML/DS, and leadership.
• A pragmatic default and strong systems instinct — you find root causes, not symptoms.
• Comfort with complexity and curiosity to define the path forward, not wait for one.
• BS or MS in Computer Science, or equivalent experience.

Nice to have

• Technical leadership on Rust best practices — idioms, safety, and performance.
• Healthcare, payer, or insurance domain experience; claims or payment-integrity workflows.
• Experience shipping ML/AI-driven features in production and earning the business's trust in them.

Benefits

• Work from anywhere in the US! Machinify is digital-first.
• Top Medical/Dental/Vision offerings.
• FSA/HSA.
• Tuition reimbursement.
• Competitive salary, 401(k) with company match.
• Unlimited PTO.
• Additional health and wellness benefits and perks.
• Flexible and trusting environment where you’ll feel empowered to do your best work.