https://jobs.co.uk/job/senior-back-end-engineer-addition--7f017200-01d6-48df-bdb8-1496444bc4ad RSS feed for Senior Back End Engineer at Addition. en-gb Thu, 01 Oct 2026 20:25:31 GMT https://jobs.co.uk/job/senior-back-end-engineer-addition--7f017200-01d6-48df-bdb8-1496444bc4ad https://jobs.co.uk/job/senior-back-end-engineer-addition--7f017200-01d6-48df-bdb8-1496444bc4ad Thu, 01 Oct 2026 11:53:17 GMT Location: London | Salary: 475.00-475.00 Daily | Type: Permanent | Backend Developer - Java/Spring Boot Start Date: ASAP Contract Outside IR35 £475 per Day Duration: Until the End of March Location: Fully Remote We''re partnering with a fast-paced, technology-led organisation to appoint an experienced Backend Developer on a fully remote contract. This is an excellent opportunity for a hands-on developer with strong Java and Spring Boot experience to build and develop scalable backend systems within a high-volume engineering environment. We''re particularly interested in candidates with previous experience in iGaming, betting, FinTech or another sector where reliability, scalability and performance are critical. The Opportunity As Backend Developer, you''ll work as part of an established engineering team to design, develop and improve backend services and microservice-based applications. You''ll use Java and Spring Boot to create reliable, scalable solutions, develop REST APIs and support systems handling high volumes of activity. This is a hands-on contract suited to someone who can work effectively at pace, contribute confidently from the outset and deliver high-quality backend solutions within a complex technical environment. Key Responsibil... Permanent