Thisisundefined developer jobs, salaries & tech stack
2 live roles observed on thisisundefined.com, 2 roles seen in total since May 2026.
How Thisisundefined hires
Read from its live adverts and compared with today's UK IT market.
Thisisundefined is advertising 2 live technology roles on its own careers page, mostly in software engineering, and has been hiring technology staff since at least May 2026.
Every role is based in London.
0% of Thisisundefined's roles are advertised as fully remote and 50% as hybrid, against 29% across the UK IT market — more office-based than most employers.
The technologies that appear most often in its adverts are JavaScript, TypeScript, React, Node.js and SQL.
JavaScript features in 50% of Thisisundefined's roles, against 12% of UK IT roles overall — a JavaScript shop more than most.
In Thisisundefined's own words
From its advert for Mid-Level Full Stack Developer.
Mid-Level Full Stack Developer Be part of our small London-based team at Undefined, creating thoughtful, human-first digital products for clients and internal projects. View Details Don't see a role for you? We're always open to hearing from exceptional people, even if we don't have a specific role available. Send us your CV and tell us what you'd like to work on.
Live roles at Thisisundefined
Detected on the employer's own careers page; each links to the full listing.
| Role | Location | Pattern | First seen |
|---|---|---|---|
| Mid-Level Full Stack Developer | London | On-site | 1 week ago |
Showing the 1 most recent of 2.
New roles by month
How steadily Thisisundefined has been adding technology roles.