YLD.io

YLD is a software engineering and product design consultancy headquartered in London, with additional offices in Lisbon and Porto. The firm works with enterprises to build mission-critical digital capabilities, modernise legacy practices and software, and transfer technical knowledge to client teams. Its client portfolio includes global companies such as Trainline, Condé Nast, The Economist, and GoDaddy.

The consultancy operates across technical domains including Node.js, React, Kubernetes, AI, and fintech, and has made thousands of open-source contributions. Industry verticals served include rail distribution, media, EV charging infrastructure, and fintech.

YLD maintains a remote-first approach and actively nurtures tech communities through initiatives like ReactJS Girls and Design Systems London. The company, which employs between 51 and 200 people, emphasises fostering progressive cultures of learning and sustainable solution-building alongside its engineering work.