Full Stack Engineer, Mid/Senior, (Typescript)

Fair is a Series A company focused on revolutionizing the auto warranty industry by offering better coverage and customer trust. They are seeking a Full Stack Engineer to own their partner-facing platform, design and ship backend services, and enhance the quality of their API platform for B2B partners.

Responsibilities:

• Designing and shipping core backend services across pricing, payments-adjacent workflows, accounting/reconciliation, and partner integrations
• Hardening our B2B API platform (REST + GraphQL) for real-world partner use: idempotency, versioning, webhook signing and replay, sandbox/production separation, rate limiting, abuse protection
• Owning API contract design with a typesafe-by-default mindset. OpenAPI + codegen for REST, code-first schema for GraphQL, error contracts developers can actually trust
• Building for operability. Instrumentation, alerting, dashboards, runbooks. If it goes sideways at 2am, we need to know before a partner does
• Raising the quality bar through test coverage and CI gates that give real confidence at release time, not just green checkmarks
• Handling sensitive data the right way. Security, privacy, and compliance are not afterthoughts here. SOC 2, access controls, audit logging. You take this seriously because we do
• Improving how we work, not just what we ship. Better issue scoping, sharper estimates, cleaner release processes

Requirements:

• 4+ years experience building and operating production backend services. Real users, real uptime requirements, real on-call lessons
• Strong Node.js + TypeScript chops across APIs and backend business logic
• Experience designing and maintaining external-facing APIs with backward compatibility and documentation that partners can rely on
• Real fluency with API platform fundamentals: auth patterns (API keys, OAuth), idempotency, pagination, rate limiting, webhooks and event delivery
• Solid relational database fundamentals. MySQL or Postgres, schema design, safe migrations
• A track record of improving system quality through testing and CI, not just shipping fast
• Ability to scope work into shippable slices, write clear technical tickets, and give estimates that flag the real unknowns
• Fintech, payments, or insurtech experience. Pricing engines, transactional logging, refunds, reconciliation
• You've built or maintained a public B2B API with Stripe-level expectations (versioning, docs, SDK)
• Robust webhook systems. Signing, retries, delivery logs, replay, deduplication, out-of-order handling
• Security and compliance depth. SOC 2 controls, audit logging, secrets management, least-privilege design
• AWS depth. ECS/Fargate, EventBridge/Lambda, SQS/SNS, RDS, CloudWatch, Terraform