Full-Stack Engineer — TS/React, Equity & Open-Source

hash; Greater London; On-site; GBP 70,000 - 120,000; Full time

Benefits offered by this job

Equity-weighted total compensation

Employer pension contributions

At least 30 days holiday annually

Quarterly in-person team retreats

Job summary

HASH is hiring full-stack engineers to build user-facing features in London, UK and Berlin, Germany. You will contribute to both frontend and backend, shipping new functionality quickly in an open-source oriented environment.

We value high energy and high expectations, with in-person collaboration and a compensation package that includes competitive salaries and meaningful equity. Join us to work on modular, reusable components across our codebase.

Qualifications

• Expert-level proficiency in TypeScript and React.
• Experience with frontend graphics and HTML Canvas is beneficial.
• Familiarity with component libraries and type-safe styling systems is a plus.
• Interest in building performant, scalable full-stack solutions.

Responsibilities

• Develop frontend and backend features across the HASH codebase.
• Build modular components for reuse in third-party apps.
• Collaborate with UX/UI designers and company leaders to ship new functionality.

Skills

TypeScript

React

Rust

Effect

HTML Canvas

UI libraries

Material UI

Base UI

Ariakit

Panda styling

Data structures

Tools

Material UI

Base UI

Ariakit

Panda styling

Job description

HASH is hiring full-stack engineers to build user-facing features in London, UK and Berlin, Germany. You will contribute to both frontend and backend, shipping new functionality quickly in an open-source oriented environment.

We value high energy and high expectations, with in-person collaboration and a compensation package that includes competitive salaries and meaningful equity. Join us to work on modular, reusable components across our codebase.