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4 back end developer jobs found in London

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London up to 6 Months back end developer
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Contract Spy
Apr 22, 2026
up to 6 Months
Senior Software Engineer, Native Applications and Networking at Secure Code Warrior, London, 3 Months, £Contract Rate
Contract Spy London, UK
Join Secure Code Warrior to create a safer digital landscape by assisting companies to secure their software through developer-led practices!   Secure Code Warrior’s mission is to establish new standards for coding that transform the ways software is created. We do this by providing the world’s leading agile learning platform that delivers the most effective secure coding solution for developers to learn, apply, and retain software security principles. More than 600 enterprises trust Secure Code Warrior to implement agile learning security programs, build safer software, and create a culture of developer-driven security. We are a venture-backed company with offices in Australia, the United States, Belgium, Iceland, and the United Kingdom.   Secure Code Warrior is seeking a Senior Engineer to take long-term ownership of our core system-level product suite across Windows and macOS. In this contract role, you will be the architectural...
Contract Spy
Apr 15, 2026
up to 6 Months
Adobe Experience Manager (AEM) Developer at Red Badger, London Canary Wharf/Remote, 8 Weeks, £Contract Rate (Outside IR35)
Contract Spy Canary Wharf, London, UK
Adobe Experience Manager (AEM) Developer - Freelancer Start date Monday 13th April AEM expertise essential Immediate Interviews 8 week initial contract duration (likely to extend) £day rate OUTSIDE IR35 2 days / week in office working (Canary Wharf) Joining a cross functional discovery team to delivery a product discovery for a major UK bank. Looking for high expertise in AEM and the ability to understand both as / is state of CMS, and collaborate with other Red Badger expert practitioners and client stakeholders to deliver a validated set of recommendations / plans to enable the complete re-design and rebuilding of this banks CMS system; the vision of which is to be the main digital hub for content across all departments of the bank.
Contract Spy
Apr 13, 2026
up to 6 Months
Senior Software Development Engineer - Elasticsearch at GoCardless, London, 3-6 Months, £600 per day
£600 per day
Contract Spy London, UK
About Us at GoCardless GoCardless is a global bank payment company. Over 100,000 businesses , from start-ups to household names, use GoCardless to collect and send payments through direct debit, real-time payments and open banking.  GoCardless processes US$130bn+ of payments annually, across 30+ countries ; helping customers collect and send both recurring and one-off payments , without the chasing, stress or expensive fees. We use AI-powered solutions to improve payment success and reduce fraud. And, with open banking connectivity to over 2,500 banks , we help our customers make faster, more informed decisions. We are headquartered in the UK with offices in London and Leeds , and additional locations in Australia, France, Ireland, Latvia, Portugal and the United States. At GoCardless, we're all about supporting you ! We’re committed to making our hiring process inclusive and accessible . If you need extra support or adjustments,...
Contract Spy
Apr 08, 2026
up to 6 Months
Adobe Experience Manager (AEM) Developer at Red Badger, London Canary Wharf/Remote, 8 Weeks, £Contract Rate (Outside IR35)
Contract Spy Hybrid (Canary Wharf, London, UK)
Adobe Experience Manager (AEM) Developer - Freelancer Start date Monday 13th April AEM expertise essential Immediate Interviews 8 week initial contract duration (likely to extend) £day rate OUTSIDE IR35 2 days / week in office working (Canary Wharf) Joining a cross functional discovery team to delivery a product discovery for a major UK bank. Looking for high expertise in AEM and the ability to understand both as / is state of CMS, and collaborate with other Red Badger expert practitioners and client stakeholders to deliver a validated set of recommendations / plans to enable the complete re-design and rebuilding of this banks CMS system; the vision of which is to be the main digital hub for content across all departments of the bank.
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