7 of 7 Contract Senior Software Engineer Jobs in London

Senior Software Engineer (MongoDB/Django) 6-Month Contract Outside IR35 Fully Remote About the Role Were looking for a Senior Software Engineer with deep expertise in MongoDB to help solve complex integration challenges between Django and MongoEngine within a live production environment. This is a hands-on engineering role, suited to someone who … engineers on effective MongoDB usage patterns and integration strategies. Help evolve internal tooling, libraries, and data access layers to streamline development. What Were Looking For Proven experience as a Senior Software Engineer with a strong focus on backend systems and database design. Advanced MongoDB knowledge schema design, aggregation pipelines, performance tuning, replication, and indexing strategies. Strong experience More ❯

Do you have a passion for enabling developer 'flow' and building lightning-fast build experiences? We are seeking an experienced and collaborative Senior Software Engineer to drive the next generation of developer tooling as we build a unified, robust, and scalable monorepo ecosystem . Role: Senior Software Engineer Experience: 8+ years Location: Fully remote More ❯

Location London Hybrid 1-2 days a week in the office eligibility to work in the UK Role Overview We are seeking a skilled Senior Developer to join a newly formed engineering team focused on removing legacy components and addressing technical debt within our Media Services products. This role will involve working closely with stakeholders to understand system requirements … component migrations. A proactive and detail-oriented approach will be vital to ensure smooth transitions from legacy systems to scalable, reliable, and future-proof solutions. In addition, experience with software testing practices, Agile methodologies (Scrum or Kanban), and defensive programming techniques will be highly desirable. We are looking for someone who thrives in collaborative, fast-paced teams, who can … Go programming experience Agile/Scrum experience Load Balancer experience Defensive programming techniques Tools and Technology Java Jira AWS TDD CI/CD Experience A degree in Computer Science, Software Engineering, or a related field or similar work based experience. Proven experience as a Senior Software Engineer ideally with a focus on media-related projects. Very More ❯

Senior Software Developer - Ruby 12-Month Contract Inside IR35 Role Details Location: London or Manchester (2 days/week onsite + monthly team rotation) Duration: 12 months Clearance: BPSS to start; active SC required due to timescale of the project Team: 10 direct reports, part of a 60+ programme Experience: 4+ years Essential Skills Technical: Strong Ruby development … and open data platforms Ensure code is high-quality and well-documented Work closely with UCD teams and technical experts in an agile environment What We're Looking For: Senior Ruby developer with strong focus on code quality Experience working with data services Comfortable working in small, agile teams and collaborating with UCD teams Desirable Skills: Python development Experience More ❯

Senior Software Developer - Ruby 12-Month Contract Inside IR35 Role Details Location: London or Manchester (2 days/week onsite + monthly team rotation) Duration: 12 months Clearance: BPSS to start; active SC required due to timescale of the project Team: 10 direct reports, part of a 60+ programme Experience: 4+ years Essential Skills Technical: Strong Ruby development … and open data platforms Ensure code is high-quality and well-documented Work closely with UCD teams and technical experts in an agile environment What We're Looking For: Senior Ruby developer with strong focus on code quality Experience working with data services Comfortable working in small, agile teams and collaborating with UCD teams Desirable Skills: Python development Experience More ❯

Job Title: Senior Engineer with Node.js and Python or Back End (Java and ideally Kafka) Max rate: £537/Day on Umbrella Location: Croydon (Hybrid) Clearance required: SC Transfer (Active SC only ) Contract Duration: 05 months Experience of Java Experience of Spring framework or equivalent. Knowledge of software design patterns and when to apply them Excellent knowledge … Experience of containerisation using Docker or Kubernetes Experience of Continuous Integration (CI) and Continuous Delivery (CD) A passion for delivering quality code, by use of TDD and setting high software quality standard We're also using the following technologies and patterns, it would be great if you had some of the skills, if not we can help develop them More ❯

Must-Have (Non-Negotiable): 10+ years of professional software engineering experience, with 5+ years in Go. Proven ability to solve complex problems end-to-end, not just implement tickets. Deep understanding of Go’s concurrency model (goroutines, channels, memory model). Strong grasp of computer fundamentals: memory, CPU, I/O. Experience with distributed systems, APIs, and cloud-native More ❯