Senior Backend Engineer, Financial Systems & Billing

Hinge Health; San Francisco (CA); On-site; USD 157,000 - 218,000; Full time

Job summary

Hinge Health in San Francisco is seeking a Backend Software Engineer to design and build the financial systems powering billing and revenue workflows. You will develop scalable services, data models, and APIs with a focus on correctness, observability, and security.

You will collaborate with Product, Finance, Operations, Data, and partner engineering teams, own components end‑to‑end, and contribute to on‑call rotation while mentoring junior engineers.

Qualifications

• Bachelor’s degree or equivalent in CS, engineering, or a related field.
• 5+ years of non‑internship, full‑time software development experience.
• 4+ years of experience with at least one programming language.
• 4+ years of experience across the full software development life cycle, from design through production support.
• Experience delivering large software projects or features in a production environment.
• Proficiency in at least one modern programming language, such as Golang, Python, Java, or JavaScript/TypeScript.
• Experience designing and operating backend services, APIs, data models, and asynchronous or distributed workflows.
• Experience working with relational databases and integrations where data integrity, failure handling, and observability are important.
• Demonstrated ability to work effectively with cross‑functional partners and communicate technical trade‑offs clearly.

Responsibilities

• Deliver large projects across billing and financial workflows, often acting as a maintainer for key code repositories.
• Design and evolve reliable services, APIs, and data models for revenue‑critical systems, including billing flows, payment‑model changes, payer integrations, and financial data movement.
• Build for correctness and traceability by establishing clear data ownership, durable workflows, idempotent processing, strong validation, and actionable audit and operational signals.
• Break down complex, cross‑functional problems into manageable tasks, enabling steady delivery while identifying and resolving root causes of incidents and data discrepancies.
• Collaborate with Product, Finance, Operations, Data, and partner engineering teams to define requirements, roadmap technical strategy, and balance short‑term delivery with long‑term system health.
• Improve the maintainability, availability, performance, and observability of financial systems, including developer tooling and operational runbooks.
• Mentor and support junior engineers through thoughtful code reviews, pairing, design feedback, and knowledge sharing.
• Communicate technical ideas clearly to technical and non‑technical partners, and document decisions and workflows so they remain understandable as the team grows.
• Integrate and leverage AI technologies to automate engineering and operational processes and enhance product capabilities, while preserving appropriate review and control for financial workflows.
• Participate in the team’s weekly on‑call rotation, helping ensure the reliability and timely support of the systems we build.

Skills

Golang

Python

Java

JavaScript/TypeScript

Relational Databases

Distributed systems

Education

Bachelor’s degree, or equivalent experience

Tools

PostgreSQL

Redis

gRPC

AWS

Temporal

Job description

Hinge Health in San Francisco is seeking a Backend Software Engineer to design and build the financial systems powering billing and revenue workflows. You will develop scalable services, data models, and APIs with a focus on correctness, observability, and security.

You will collaborate with Product, Finance, Operations, Data, and partner engineering teams, own components end‑to‑end, and contribute to on‑call rotation while mentoring junior engineers.