After graduating from Oxford, Berners-Lee worked at Plessey Telecommunications in Dorset, where he gained experience in distributed transaction systems, message switching, and bar code technology.

He joined D.G. Nash Ltd, where he wrote typesetting software for intelligent printers. This role further honed his programming skills and exposed him to data manipulation and formatting.

Berners-Lee worked as an independent consultant at CERN (European Organization for Nuclear Research) for six months. During this time, he wrote 'Enquire,' a personal database program with hypertext-like capabilities, which foreshadowed his later work on the Web. Enquire explored the concept of associative linking of information.

He worked at Image Computer Systems Ltd., where he gained experience in real-time graphics and communications software. He contributed to the development of graphic design software.

Berners-Lee returned to CERN as a fellow. This was the crucial period where he would conceptualize and implement the World Wide Web.