SeniorFull-Stackengineer(Typescript)

[UserEvidence](https://www.userevidence.com/) is a SaaS platform that unlocks stories from happy customers, and automatically creates a library of beautiful content assets. We are the only platform purpose-built to unlock customer love at scale. Credibility and noise are huge issues in B2B marketing and sales. We believe companies can sell a lot more when they let their customers do the talking, and show real-life evidence and feedback from their users. **About this role**. UE Advocacy is a customer advocacy product we acquired because it fits our north-star mission. The product demos beautifully and customers love what it does, but the codebase was built fast and is now showing the strain. We are in active remediation: porting a legacy Express API to a modern Hono/Bun backend, decomposing oversized React pages, hardening data integrity, retiring AWS Lambdas in favor of in-monorepo BullMQ workers, and adding real test and observability coverage. We need senior engineers who can ship inside a codebase under construction, follow established patterns rigorously, and trust the safety net (canary deploys, feature flags, automated review) instead of relying on manual full-app QA. **Stack** * **Language:** TypeScript (strict mode on new code) * **Backend:** Hono on Bun, OpenAPI-driven routing, Prisma + PostgreSQL, BullMQ for background jobs and crons, AsyncLocalStorage-aware transactions * **Frontend:** Next.js (Pages Router), React Query, Tailwind, Base UI primitives, an auto-generated SDK client from OpenAPI * **Testing:** Bun test runner with factory-based real-DB integration tests; Vitest + React Testing Library for components; Playwright for E2E * **Infra & observability:** Render, AWS, New Relic, PostHog feature flags, Auth0 * **Tooling:** Macroscope automated code review, a comprehensive in-repo agent guide, and canonical reference modules that define the patterns we expect every new module to match **Responsibilities** You'll be part of a senior engineering team re