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# Full-Stack Engineer

- **Company:** HASH
- **Location:** London, UK (Remote available)
- **Salary:** £60,000.0 - £110,000.0
- **Contract:** Permanent contract
- **Skills:** HTML, Computer Animation, Data Structures, Open Source Technology, TypeScript, Web Application Frameworks, ReactJS, Backend, Material UI, Front End Software Development
- **Published:** September 18, 2026
- **Apply:** https://www.adzuna.co.uk/jobs/details/5889034999

## About the Role

* You must possess expert-level proficiency in TypeScript and React. Additional experience with Rust is nice-to-have but not required.
 * Experience working with Effect and HTML Canvas, as well as frontend graphics and animation libraries are also beneficial, as is familiarity using and customizing component libraries such as Material UI, Base UI or Ariakit, and working with type-safe styling systems like Panda.
 * You should be interested in not only moving fast, but also in building performant solutions.
 * In this full-stack role, you should be as comfortable optimizing data structures and storage systems as you are in pushing front-end web frameworks to their limits. If you are more interested in frontend engineering only, see our separate FE Engineer opening(s).

## Description

Full-stack engineers implement the majority of HASH's user-facing features. They write code on the frontend and backend, unblocking themselves, and ensuring HASH responds to user needs and ships new functionality fast. We are hiring new engineers based in London, UK as well as Berlin, Germany to join our team in-person., * You'll work on both the frontend and backend of new features at HASH, touching most parts of the HASH codebase.

 * The vast majority of your work will be open-source, and many of the components you build should be designed modularly, supporting their use in third-applications, as well.
 * You'll collaborate directly with experienced, organized, and technical UX/UI designers in addition to company leadership (both the CEO and CTO).


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