Johnathan Sewell

Johnathan Sewell is an experienced software engineer with a strong focus on frontend development and team leadership. Currently serving as Principal Frontend Engineer at Penneo A/S since June 2025, Johnathan previously held roles including Senior Software Engineer at BLAST from June 2022 to June 2025, and Senior Technical Lead at Planday from January 2019 to June 2022. Throughout a diverse career, notable positions include Senior Frontend Developer at Vivino, where Johnathan contributed to a widely-used e-commerce platform, and Senior Frontend Developer at Snaplytics, focusing on analytics features for social media applications. Earlier experience includes leadership roles at Brandwatch, where Johnathan led teams to develop enterprise-level applications, and various development roles at Cubeworks and ENER-G Holdings Plc. Johnathan holds a BSc (Hons) in Software Engineering from the University of Brighton, completed in 2008.