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7 senior backend developer jobs found

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United Kingdom 6 Months or more senior backend developer
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£400 - £500  (2)
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Contract Spy
Jun 15, 2026
6 Months or more
Senior AWS Connect Developer at Intelstack, Edinburgh, 6-12 Months, £Contract Rate
Contract Spy Edinburgh, Scotland, United Kingdom
Job Title: Senior AWS Connect Developer Job Type: Contract · Inside IR35 Location: Edinburgh (Preferred)— Hybrid (2 to 3days) Duration: 6-12 months   The Role Translate business requirements into technical AWS Connect contact centre solutions Design complex IVR workflows, dynamic routing, skill-based queues, and agent hierarchies Configure routing profiles, hours of operation, fallback & failover strategies Develop and configure contact flows, routing logic, and agent experiences Build backend integrations using AWS Lambda, API Gateway, S3 Integrate Amazon Connect with CRM systems (Salesforce/ServiceNow), external APIs, and enterprise platforms Lead migration from legacy platforms (e.g., Avaya) to Amazon Connect Optimize call routing performance, system resilience, and availability Support production releases, testing, and stabilization phases   Your Profile Essential...
Contract Spy
Jun 10, 2026
6 Months or more
Senior AI Engineer at Tokio Marine HCC, London, 6 Months, £Contract Rate (Outside IR35)
Contract Spy London, UK
Senior AI Engineer Assignment type: 6 month contract (outside IR35) TMHCC is seeking a Senior AI Engineer to support the build-out of our AI Ops capability and delivery of strategic AI transformation initiatives across insurance operations, including Policy Revamp and FNOL (First Notice of Loss). The role will focus on designing and implementing enterprise-grade Agentic AI solutions using Azure AI Foundry, Python, Azure Functions, and modern cloud-native engineering practices. This is a hands-on engineering role requiring strong experience in AI workflow orchestration, secure Azure architecture, API integration, and scalable AI solution delivery.   Key Responsibilities Design and develop Agentic AI solutions using Azure AI Foundry and Azure OpenAI Build AI orchestration workflows using Python and Azure Durable Functions Develop document-processing and AI-driven automation solutions for insurance workflows Implement secure Azure...
Contract Spy
Jun 10, 2026
6 Months or more
Platform Engineer - Observability at Era4, United Kingdom, 6 Months initial, £Competitive Day Rate
Contract Spy UK
Era4 develops, owns and operates AI infrastructure across the UK, powered by renewable energy. Converting legacy industrial and energy sites into modern data-centre facilities, Era4 is combining brownfield regeneration opportunities with cleaner, efficient, scalable compute capacity for healthcare, research, finance, enterprise, and public-sector organisations   Initial 6 month contract. June start date. Competitive day rate.   Role Summary: The Identity & Platform Engineer is responsible for designing, implementing and operating the core platform services that provide: Kubernetes platform services Sovereign identity management Federation and authentication services Privileged access management Secrets management Customer identity integration Platform security and governance   The successful candidate will play a key role in delivering a Zero Trust, sovereign cloud platform built around: FreeIPA, Teleport,...
Contract Spy
Jun 08, 2026
6 Months or more
Back-End Developer (Java &Spring Boot/GCP) at Methods, London, 6 Months, £490 per day
£490 per day
Contract Spy London Area, United Kingdom
Methods is looking for a Back End Developer specialising in Java Spring Boot and GCP(Google Cloud Platform) to join our team within the private Sector Business unit. Rate: £490 inside IR35 Duration: 6 month initially Location: Hybrid; 3days/w in London office   Requirements:   Architectural Rebuild: Play a role in migrating and rebuilding our core architecture in Java Spring Boot to align with a composable, cloud-native landscape. Connector Development: Design and optimize technical connectors for a diverse mix of global channels, including generalist marketplaces, social commerce (eg, TikTok Shop), and quick-commerce (eg, Glovo, Deliveroo). Catalog Publication Flow: Refocus efforts on rebuilding the catalog publication flow, addressing technical complexities such as category mapping, product variant synchronization, and asynchronous marketplace APIs. Business Logic Migration: Collaborate on transferring complex Legacy...
Contract Spy
Jun 01, 2026
6 Months or more
Back-End Developer (Java &Spring Boot/GCP) at Methods, London, 6 Months, £490 per day
£490 per day
Contract Spy London Area, United Kingdom
Methods is looking for a Back End Developer specialising in Java Spring Boot and GCP(Google Cloud Platform) to join our team within the private Sector Business unit. Rate: £490 inside IR35 Duration: 6 month initially Location: Hybrid; 3days/w in London office   Requirements:   Architectural Rebuild: Play a role in migrating and rebuilding our core architecture in Java Spring Boot to align with a composable, cloud-native landscape. Connector Development: Design and optimize technical connectors for a diverse mix of global channels, including generalist marketplaces, social commerce (eg, TikTok Shop), and quick-commerce (eg, Glovo, Deliveroo). Catalog Publication Flow: Refocus efforts on rebuilding the catalog publication flow, addressing technical complexities such as category mapping, product variant synchronization, and asynchronous marketplace APIs. Business Logic Migration: Collaborate on transferring complex Legacy...
Contract Spy
Jun 01, 2026
6 Months or more
Lead Developer at The Electoral Commission, Remote, £Contract Rate
Contract Spy Remote (United Kingdom)
The Role As Lead Developer, you'll take end-to-end ownership of a critical digital service, working across the full software development lifecycle from early-stage design and discovery through to delivery, scaling and ongoing live support. This is a hands on technical leadership role, with a genuine balance between engineering and collaboration. You'll remain close to the code while also working with product, data and stakeholders to shape the long-term direction of the service. You'll initially work closely with Democracy Club's developers, the third-party organisation which currently provides postcode specific election information. The initial stage involves working with existing code and evaluating how best to transition it in-house.   This role sits at the heart of one of the Commission's most significant digital initiatives - the transfer and development of a voter information service used by millions of citizens. You'll be responsible for delivering...
Contract Spy
May 28, 2026
6 Months or more
Lead Developer - SC Cleared at Ministry of Justice, Remote, 6 Months, £Contract Rate
Contract Spy Remote (London, UK)
SC Clearance is an essential requirement for this role, as a minimum you must be willing & eligible to undergo checks. Please note, due to the exceptional requirements of this position (short-term nature of this role and speed at which we require a postholder in situ) preference may be given to candidates who meet all of the essential criteria and hold active SC clearance.    The Ministry of Justice (MoJ) priorities include improving public safety and reducing reoffending by reforming prisons, probation and youth justice, and building a justice system which makes access to justice swifter and more certain for all citizens whatever their background. Project professionals in the MoJ help to improve the government's ability to protect the public and reduce reoffending, and to provide a more effective, transparent and responsive criminal justice system for victims and the public.   As a  Lead Developer , your main responsibilities will be:...
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