# Software Engineer, API Platform

**Company:** [Convex](https://hotfix.jobs/companies/convex)
**Location:** San Francisco, CA
**Role:** Backend Engineering
**Salary:** From $170k/yr
**Skills:** TypeScript, React, API Design, Client Libraries, Sync Protocol, Query Apis, Web Development, Developer Tools
**Posted:** 2025-08-06

> Designs, builds, and maintains client libraries, sync protocols, and query APIs for Convex's backend platform. Requires strong TypeScript skills, API design experience, and ability to work across the stack in a high-growth startup.

## Job Description

## What You’ll Do
- Design, build, and maintain Convex’s client libraries, sync protocol, and query APIs.
- Support new frameworks and keep track of new technologies in the app development space.
- Develop an understanding of what abstractions scale and compose well in our stack so we can build libraries that are not just easy to use but also simple over the lifetime of a project.
- Be self-directed to prioritize the right projects to work on, in close collaboration with the engineering team and CTO.
- Help establish good practices and design guidelines as we scale up our team and systems.
- Write a bunch of cool client library code.

## What Excites Us
- Multiple years experience building APIs, client libraries or developer tools.
- Good understanding of best practices in the **TypeScript**, **React**, and web dev ecosystems.
- Experience or enthusiasm for scaling in a high growth startup environment.
- Interest to work in-person at Convex's office in SF.
- Ability to write high quality code (**strong TypeScript experience** a plus).
- An enthusiasm for going deep to understand Convex systems and not be constrained to a certain layer of the stack.

## Compensation
- Salary range: **>$170,000** + equity + benefits

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