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Mid-Level Full Stack Engineer (TypeScript & React)

RoundZero
ActiveFull-timeMid-levelHybridSan Francisco, CA

We are looking for a skilled Mid-Level Full Stack Engineer to join our product engineering team. In this role, you will build and maintain modern web applications using TypeScript and React on the frontend and Node.js on the backend. You will collaborate closely with product managers, designers, and other engineers to deliver features that are scalable, performant, and delightful to use. This is a hybrid position based in our San Francisco office (3 days/week in-office). You will own features from concept through deployment, contribute to technical decisions, and help shape our engineering culture.

Requirements

  • 2-5 years of professional full stack engineering experience
  • Strong proficiency in TypeScript and React (hooks, state management, component patterns)
  • Experience building and consuming RESTful or GraphQL APIs with Node.js (Express, Fastify, or similar)
  • Proficiency with SQL and at least one relational database (PostgreSQL or MySQL)
  • Experience with version control (Git) and CI/CD pipelines
  • Familiarity with testing frameworks (Jest, React Testing Library, Cypress)
  • Ability to write clean, maintainable, and well-documented code
  • Strong problem-solving skills and effective communication in a collaborative team environment

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