Having worked in the construction chemical and coatings industries since 1999, Alistair uses his extensive experience to lead our technical services team. He loves nothing more than unravelling complex chemical challenges to refine and create the compounds that enhance our customers’ products. This passion for improvement also extends to his team. As Alistair helps every individual discover what they’re good at and supports them to do their best work.

Away from work, Alistair is a keen model car racer – think small-scale, remote controlled, off-road formula one. He’s well known for trying his deft handling skills and precision at his local track … and sometimes succeeding!

The team’s chief technical chemist, Usman has had a fascinating career with time spent working in the pharmaceutical and nuclear industries before moving into the construction chemical sector. Since joining Cemkem in 2018, Usman has put his PhD to work in our well-equipped labs. Where he helps our customers achieve product perfection and develops our portfolio through innovative R&D work – his favourite part of the role.  

Evenings and weekends see Usman looking after his kids and, when he gets a spare second, watching a film or indulging in his passion for gaming.

A technical background gained across a number of businesses, plus a degree in concrete technology, gives Jess superb knowledge of the construction industry. Rapid career progression in a range of technical roles also exposed Jess to an array of technical work, helping her quickly acquire the knowledge she uses in her commercial role today. Much of Jess’ time is spent building relationships and finding the best possible solutions, which balance performance and cost, for our customers. 

Outside work Jess enjoys her hobby of boxing with one white collar fight under her belt to date. Yet another great reason to have Jess in your corner.

After three years working in production for Rakem, Ste moved on to a quality control job, first for Rakem, then Cemkem. Today, he’s a key part of the technical team, supporting Usman and ensuring the quality of our products. Passionate about the R&D part of his role, Ste loves to get his brain working and thrives on the challenge of solving problems.

Outside the nine-to-five, Ste is a family man who enjoys looking after his kids and spending time with his naughty French Bulldog, Bruno, whose favourite hobby is ripping up quilts.

Fresh out of university with a history degree, Joe is the latest Rafferty to join the family business. Having worked in the warehouse and labs during summer holidays, Joe had a good feel for the firm before joining in 2023. In his current role, Joe supports the sales team with reports, emails and costings, ensuring a great experience for Cemkem’s customers. However, with training underway, Joe is on track to becoming a Sales Manager, so watch this space. 

Outside work, rock, indie and dance fan Joe loves music festivals.  He’s equally at home at Reading and Leeds, Creamfields, or chilling out at a forest festival.