Warren began his R&D career at ICI Specialties in new product development within the textile colourants division developing reactive dyes. He continued in the specialty colourants R&D field with BASF and then DyStar which became the world’s biggest dyestuff producer.
In 2009, Warren joined Jay Chemical Industries in Ahmedabad, India as Research Manager, where he set up a new research facility. Warren moved into polymer specialty chemicals in 2013 joining Addivant. In 2015 Warren became Applications Research Manager involved in the design and development of new product formulations in diverse polymer applications such as packaging, adhesives, elastomers and cables.