A UK technology company is seeking an experienced Senior Software Developer to evolve a large-scale SIP platform and associated REST APIs. This hybrid role requires UK-based applicants within a two-hour commute to Guildford. You will work in a collaborative environment, contributing to mission-critical systems and modern AI-driven integrations. This position offers a competitive salary ranging from £55,000 to £65,000 depending on experience and emphasizes a strong engineering culture and professional development opportunities. #J-18808-Ljbffr