RSMB is seeking an experienced and highly capable Senior Full Stack Engineer to play a central role in the design, development, and evolution of our expanding product suite, including Barb Ads Hub, NMO XCM, and our Data Fusion platform. You will join the team based in London (Hybrid – 2 days per week in the office). You will join us on a full‑time, permanent basis, and in return, you will receive a competitive salary of up to £85,000 per annum, based on experience.

RSMB is a leading company specialising in media measurement solutions. We work with a wide range of clients delivering both long‑term contracts like Barb (UK TV audience measurement) and RAJAR (radio audience measurement), and ad hoc projects. We are proud that we have been a Barb TV audience measurement contractor since 1989 and a RAJAR contractor since 2007. Our team of around 50 people are based in Central London, and we are currently operating hybrid working: splitting the week between home and office worki...