1 to 25 of 28 Contract Senior Developer Jobs in England

Senior Developer - AI Enablement Platform Remote Up to £525 per day inside ir35 Active SC clearance We are seeking an experienced Senior Developer to join a major government AI programme, supporting the development of an enterprise AI enablement platform. The role will initially focus on building … Enterprise AI Gateway, integrating AI models, developer tooling and enterprise security controls. You will combine strong backend and cloud engineering expertise with hands-on experience of Generative AI and Large Language Models (LLMs). Key Responsibilities: Design, develop and maintain production-quality backend services and APIs. Build integrations with ...

Senior Snowflake Developer Hybrid - 4 days on-site p/w in London Initial Contract to 30th June 2027 Inside IR35 up to £771.94 per day Umbrella Rate Are you a Senior Snowflake Developer who wants to build the data platform behind credit risk reporting … leading financial services organisation? We're recruiting for a contract Senior Snowflake Developer position in a credit risk reporting function that is migrating legacy SQL Server platforms (SSIS, SSRS and SSAS) onto Snowflake, dbt and Python, with Power BI reporting on top. You'll rebuild existing transformation logic ...

Senior Salesforce Developer 12 Month contract 600 a day Inside IR35 Location - London/Hybrid We are looking for an experienced Senior Salesforce Developer to take a leading hands-on role in the continued development and enhancement of a multi-org Salesforce estate. The organisation currently … have gone beyond theoretical exposure and have personally designed, built and implemented Agentforce agents into a production environment . Key Responsibilities Act as a senior hands-on developer across the Salesforce estate. Design, build, test and deploy scalable Salesforce solutions using Apex, Lightning Web Components (LWC), SOQL ...

Title: Senior Developer - AI Enablement (AWS Bedrock, Python/TypeScript, AI Gateway) Location: Remote (UK-based) Rate: Negotiable/Competitive (Inside IR35) Duration: 6 Months Initial Clearance: SC Clearance Required - active clearance used on a government project within the last 12 months. Overview: Contract opportunity for a Senior Developer (AI Enablement) to join a team building a central Enterprise AI Gateway. This hands-on role blends strong production backend and cloud engineering with practical generative AI integration, including LLM APIs, agentic tooling, and enterprise security controls. Key Responsibilities: Design, build, test, and maintain backend microservices ...

Senior Front End Developer (Next.JS/React) 6 Months Fully Remote Outside IR35 VIQU have partnered with an established financial services organisation seeking an experienced Senior Front End Developer to support a major digital transformation programme. The organisation is replacing an ageing customer portal with … with no existing codebase. The successful contractor will help shape the technical architecture, establish development standards and build the application from the ground up. Senior Front End Developer - Key Responsibilities: Design and develop a new customer-facing portal using Next.js, React and TypeScript. Contribute to front-end architecture ...

Senior Front End Developer (Next.JS/React) – 6 Months – Fully Remote – Outside IR35 VIQU have partnered with an established financial services organisation seeking an experienced Senior Front End Developer to support a major digital transformation programme. The organisation is replacing an ageing customer portal with … with no existing codebase. The successful contractor will help shape the technical architecture, establish development standards and build the application from the ground up. Senior Front End Developer - Key Responsibilities: Design and develop a new customer-facing portal using Next.js, React and TypeScript. Contribute to front-end architecture ...

Senior ServiceNow Developer Key responsibilities: * Work with the ServiceNow Engagement Lead and business stakeholders to translate agreed requirements into functional and technical solution designs, contributing to and, where appropriate, facilitating solution-design workshops. * Design, configure, develop and implement end-to-end ServiceNow solutions, including Flow Designer workflows, Business … configure and help embed approved ServiceNow AI capabilities, including Now Assist and AI Agents, into new and existing solutions. * Work with the Principal ServiceNow Developer on more advanced agentic use cases and contribute to the platform's AI roadmap. * Design, develop and support integrations between ServiceNow and other enterprise ...

Senior Full Stack Developer (React, Python & Azure AI) Location: London/Hybrid Start: ASAP About the Opportunity We are seeking an experienced Senior Full Stack Developer to join a cutting-edge programme focused on delivering AI-powered solutions on Microsoft Azure. This initial workstream is dedicated … work on innovative AI initiatives, cloud-native applications, and large-scale data-driven solutions while helping shape future platform capabilities. The Role As a Senior Full Stack Developer, you will play a key role in designing, developing, and deploying modern web applications that integrate with AI-powered services ...

Senior Java Developer (AWS) 6 months Remote working (Candidates must be UK based with full right to work) £420.00 PD - Inside IR35 Overview We are seeking a highly experienced Senior Java Developer with some proven lead experience, to join a major Government programme delivering secure, cloud ...

looking for a Senior Java Developer for a public sector organisation based in Glasgow, Newcastle, Leeds, Sheffield, Manchester, Birmingham, Blackpool or Cardiff (hybrid) on an initial 12 months contract, paying up to £650 per day (Inside IR35). This is a hybrid role with an expectation to attend … regional hub around three days a week. The successful Senior Java Developer will build and maintain cloud-based services within a multi-functional agile delivery team, contributing to design as well as build. You'll own the operational stability and resilience of the products you ship, and solve ...

Senior Java Developer (AWS) 6 months Remote working (Candidates must be UK based with full right to work) £420.00 PD - Inside IR35 Overview We are seeking a highly experienced Senior Java Developer with some proven lead experience, to join a major Government programme delivering secure, cloud ...

Senior Kotlin Developer | Gov Project | £475 p.d (Inside IR35) | Remote, UK (As this is a time sensitive contract hire, we're only able to consider candidates that are available to start within a 4 week notice period) Role : Senior Kotlin Developer Day Rate : £475 p.d (Inside … partnered with a leading tech consultancy that specialises in delivering complex and high-impact projects within central government. They re looking for a Senior Kotlin Developer with prior gov experience; somebody who can hit the ground running and join a significant ongoing programme of work with ...

Senior Backend Developer Full-time Inside IR35 Hybrid 1 office day London Farringdon office address: 47-53 Charterhouse St, London, EC1M 6PB Join a dynamic energy provider dedicated to sustainable solutions in the UK. We seek enthusiastic and resourceful Backend Python Engineers at senior levels … systems and extensive datasets. Foster close collaboration with our Product, Data, Front-end, Platform, and Security teams. Knowledge and Skills: Demonstrated expertise as a Senior Backend Developer. Proficiency in Python as your primary language, or willingness to adapt. Hands-on experience with RESTful APIs and/or GraphQL. Proficiency ...

Senior Ruby on Rails Engineer £600/day Inside IR35 | 6 Months | Predominantly Remote We are seeking a Senior Ruby on Rails Engineer to join a large-scale content transformation programme. This role goes beyond development, requiring someone who can lead technical discovery, solve complex business challenges … Rails services Contribute to architecture and technical strategy Collaborate with multidisciplinary teams Support delivery within a complex digital environment We're Looking For: Senior Software Engineers, Technical Leads or Lead Ruby Engineers Experience delivering production systems at scale Strong ownership mindset and technical judgement Comfortable working with ambiguity ...

Senior Python Developer £675 daily inside IR35 6 months Hybrid working (2 days per week onsite in either London, Bristol or Manchester) *Current SC Clearance is required for this role so ideally live SC or eligible to undergo the vetting process* Experience required: Programming and build: Strong Python ...

Senior Backend Developer (Java/Spring Boot/AWS) Rate: £500 - £600 Outside IR35 Location: London - 3 times on site a month Duration: 6 months initial The role: I'm working with a financial services organisation that needs a Senior Backend Developer to build and maintain ...

HM69: Senior Digital Develop er Location: Bristol | Hybrid 2/3 days onsite Salary: Competitive Day Rate | Contract 5 Months Overview: First Military Recruitment are currently seeking a Senior Digital Developer on behalf of one of our clients. This role will lead the design, development and deployment … solutions to enable efficient capture, management and exploitation of outputs. Build and maintain Power BI dashboards, reports and visualisations to support performance monitoring and senior decision making. Configure Power Automate workflows, notifications and alerts to support governance and accountability. Design and maintain SharePoint Online Lists, Libraries and supporting M365 ...

experienced Senior Salesforce Developer with a passion for building scalable, high-performing, enterprise-grade solutions? We're looking for a talented developer to join us on a 12-month contract and play a key role in the ongoing development and evolution of our Salesforce platform. Working closely … high-quality enterprise solutions. Essential Skills and Experience To succeed in this role, you'll bring at least five years' experience as a Salesforce Developer, with strong hands-on expertise in complex Salesforce development, customisation, cloud solutions and enterprise integrations. You'll demonstrate: Salesforce Development: Deep technical expertise ...

Role: Senior C# .NET Developer Location: London, UK Working Pattern: Hybrid, 3 days per week onsite, Canary Wharf or Liverpool Street Employment Type: Contract Rate: £500 a day Inside IR35 via Umbrella Role Overview We are seeking experienced Senior C# .NET Developers to join a strategic technology ...

Senior Backend Developer - Architecture, Data Modelling £(Apply online only) per day (Inside IR35 - Umbrella) London/Hybrid (3 days per week on-site) Duration: Initially 6 months My client is a global financial services organisation who are hiring an experienced Senior Backend Enginee r with strong Architecture … making complex enterprise applications faster, simpler and more reliable. This is a backend-focused role, with some frontend capability to deliver changes. Key Requirements: Senior backend engineering experience . A track record of building and operating enterprise-scale web applications, with substantial hands-on responsibility rather than purely architectural ...

Senior Ruby on Rails Engineer £600/day Inside IR35 | 6 Months | Predominantly Remote We are seeking a Senior Ruby on Rails Engineer to join a large-scale content transformation programme. This role goes beyond development, requiring someone who can lead technical discovery, solve complex business challenges … Rails services Contribute to architecture and technical strategy Collaborate with multidisciplinary teams Support delivery within a complex digital environment We're Looking For: Senior Software Engineers, Technical Leads or Lead Ruby Engineers Experience delivering production systems at scale Strong ownership mindset and technical judgement Comfortable working with ambiguity ...

Opportunity | Tier 1 Investment Bank | Canary Wharf Overview Our client, a Tier 1 Investment Bank based in Canary Wharf, is seeking an experienced C# Developer to join a strategic application modernisation programme. This role sits within a technology team responsible for evolving critical business applications, supporting a transition from … work across the full software development lifecycle, contributing to the enhancement of existing applications while helping shape the future-state architecture. Key Information Role: Senior C# Developer Location: Canary Wharf, London (Hybrid Working) Contract Length: 6 Months Initial Contract Rate: £416 per day (Inside IR35) Start Date: ASAP ...

Senior Java Backend Developer - API & Microservices Modernisation Location: Telford - minimum 2 days per month onsite, remaining time remote Contract Length: 12 months Rate: £550 per day IR35: Inside IR35 Start Date: Candidates must be available to start w/c 4 January 2027 Client: Central Government The Role … looking for an experienced Senior Java Backend Developer to join a major application modernisation programme within Central Government. You will be responsible for designing, developing, testing and deploying Java-based RESTful APIs and microservices, with a strong focus on scalability, resilience, maintainability and integration with existing systems. Essential ...

client is leading FS consultancy looking for a Senior KDB +/q Developer to work on a long term project Required Qualifications & Skills: Technical Expertise: Deep, hands-on commercial experience programming in KDB+/q and understanding internal database architecture. Operating Systems: Strong proficiency in UNIX/ ...

Join a dynamic energy provider dedicated to sustainable solutions in the UK. We seek enthusiastic and resourceful Backend Python Engineers at senior levels who are passionate about crafting exceptional products. Initially it will be a six-month contract but there is potential for it to be extended. The role … systems and extensive datasets. Foster close collaboration with our Product, Data, Front-end, Platform, and Security teams. Knowledge and Skills: Demonstrated expertise as a Senior Backend Developer. Proficiency in Python as your primary language, or willingness to adapt. Hands-on experience with RESTful APIs and/or GraphQL. Proficiency ...