20 contract applications developer jobs found

AI Engineer (Contract) – £500/day Outside IR35 📍 Canary Wharf, London (3 days onsite) 🇬🇧 UK-based applicants only We’re looking for experienced AI Engineers who think holistically, automate relentlessly, and know how to turn modern AI capabilities into production-grade, high-impact applications . Our AI organisation is building real-world AI products that deliver business value at speed. This role is ideal for seasoned engineers who combine strong software engineering fundamentals with a pragmatic, hands-on approach to AI tooling and infrastructure. What you’ll be doing Designing, building, and maintaining production-grade AI applications using modern engineering practices (CI/CD, testing, observability, cloud-native design). Developing reusable AI platforms and tools (e.g. conversational bots, AI-powered search, unstructured data processing, GenAI solutions). Working in cross-functional, embedded teams with business stakeholders to rapidly deliver...

Ruby on Rails Developer | Outside IR35 | Remote The Role We're looking for an experienced Ruby on Rails Developer to join a fast-paced, product-led environment focused on building and enhancing a highly scalable SaaS platform. The initial focus will be on a Rails upgrade across a mature codebase, followed by integration work across multiple services and platforms. You'll be working in a collaborative, engineering-driven team, contributing to a platform that places strong emphasis on performance, security, and real-world impact. Key Responsibilities Lead and deliver a Ruby on Rails upgrade across an existing production system Identify risks, dependencies, and improvements as part of the upgrade process Design and build robust RESTful APIs to support internal and external integrations Contribute to integration work with third-party systems and internal services Write clean, maintainable, and well-tested code Collaborate with engineers, product teams, and stakeholders...

React Native Developer - Fintech Trading Start Up - London - Contract - Up to £850 Per Day – Outside IR35. Overview: Our client, a fast-growing fintech startup who operate heavily in the trading markets are looking for a React Native Developer to join their business. This role sits within the engineering team and help build high-performance mobile trading applications. You will play a key role in developing intuitive, secure, and scalable mobile experiences for traders, working closely with product, design, and backend teams. Key Responsibilities Design and develop robust, scalable mobile applications using React Native Collaborate with product managers and designers to translate UI/UX designs into high-quality code Integrate with backend APIs, market data feeds, and real-time trading systems Optimize app performance for speed, reliability, and low latency (critical for trading environments) Ensure security best practices, especially around financial...

Shopify Developer - London - £350 p/d outside IR35 - 6 months I'm hiring a Senior Shopify Lead for a 6‑month contract to lead a complex Magento to Shopify Plus migration across multiple brands and markets. Must haves include: * Led end‑to‑end Shopify Plus builds, ideally including a major re-platforming. * Deep knowledge of Liquid, Shopify APIs, Functions, Checkout Extensibility, Markets. * Strong experience with headless/hybrid architectures (e.g. Shopify + Contentful ). * Hands‑on integration of OMS/fulfilment systems with complex routing/split orders. * Ability to act as the Shopify domain authority within a large programme-driving decisions, guiding teams and ensuring technical quality. If this sounds like you, get in touch ASAP (url removed) (phone number removed) Modis International Ltd acts as an employment agency for permanent recruitment and an employment business for the supply of temporary workers in the UK. Modis Europe Ltd provide a variety of...

6 months contract £350 per day (outside IR35) Remote Working Data Analyst 6 months Contract — Outside IR35 | £350 per day | Remote working The Opportunity This is a great contract opportunity to get stuck into meaningful data work at a fast-moving technology consultancy with a genuinely global footprint. You will be Embedded in delivery teams, working directly with clients to turn messy, complex data into clear insights and polished dashboards that actually drive decisions. If you thrive on variety, enjoy explaining technical concepts to people who didn't grow up in spreadsheets, and want a contract where no two weeks look the same — this one is worth a serious look. What You'll Be Doing Getting hands-on with raw data from multiple sources — cleaning, structuring and making sense of it Building Power BI dashboards that tell a compelling story, not just display numbers Running ETL processes as part of live data migration projects Writing and maintaining...

Shopify Developer - London - £350 p/d outside IR35 - 6 months I'm hiring a Senior Shopify Lead for a 6-month contract to lead a complex Magento to Shopify Plus migration across multiple brands and markets. Must haves include: * Led end-to-end Shopify Plus builds, ideally including a major re-platforming. * Deep knowledge of Liquid, Shopify APIs, Functions, Checkout Extensibility, Markets. * Strong experience with headless/hybrid architectures (eg Shopify + Contentful ). * Hands-on integration of OMS/fulfilment systems with complex routing/split orders. * Ability to act as the Shopify domain authority within a large programme-driving decisions, guiding teams and ensuring technical quality. If this sounds like you, get in touch ASAP (see below) Modis International Ltd acts as an employment agency for permanent recruitment and an employment business for the supply of temporary workers in the UK. Modis Europe Ltd provide a variety of international solutions that connect...

Shopify Developer - London - £350 p/d outside IR35 - 6 months I 'm hiring a Senior Shopify Lead for a 6-month contract to lead a complex Magento to Shopify Plus migration across multiple brands and markets. Must haves include: * Led end-to-end Shopify Plus builds, ideally including a major re-platforming. * Deep knowledge of Liquid, Shopify APIs, Functions, Checkout Extensibility, Markets. * Strong experience with headless/hybrid architectures (e.g. Shopify + Contentful ). * Hands-on integration of OMS/fulfilment systems with complex routing/split orders. * Ability to act as the Shopify domain authority within a large programme-driving decisions, guiding teams and ensuring technical quality. If this sounds like you, get in touch ASAP Modis International Ltd acts as an employment agency for permanent recruitment and an employment business for the supply of temporary workers in the UK. Modis Europe Ltd provide a variety of...

Microsoft AI Architect – Strategy & Governance (Copilot Studio, Power Platform) | £700/day | Outside IR35 | 10 Weeks | London Hybrid A Microsoft AI Architect is required for a high-impact financial services programme, leading the strategy and governance of enterprise AI and Power Platform adoption. This Microsoft AI Architect role is focused on building scalable governance frameworks across Copilot Studio, Power Platform, and Azure AI—supporting 100+ applications and AI agents. What you’ll need: Proven experience defining Power Platform strategy and governance in enterprise environments Strong delivery of Copilot Studio / AI strategy & governance Deep expertise in Power Platform governance (environments, pipelines, provisioning, licensing, compliance) Experience enabling Citizen vs Pro Developer models Strong understanding of data governance and regulatory controls (Financial Services ideal) As a Microsoft AI Architect, you’ll shape how AI and...

Company Description For over 28 years, Version 1 has partnered with leading global brands to deliver digital, cloud, and enterprise application solutions that drive business success. We are proud to be recognised as: Oracle Innovation Partner of the Year 2023 (EMEA) Microsoft Global Partner of the Year (Modernising Applications) AWS Collaboration Partner of the Year (EMEA) One of the Best Workplaces for Women in the UK & Ireland (2023) With 3,700+ people and revenues exceeding €347m/£302m , Version 1 is a market leader in Oracle, Microsoft, and AWS consulting services – and one of the fastest-growing digital consultancies in Europe. Job Description Senior Oracle Fusion Technical Consultant (Cloud Extension Focussed) (Outside IR35 Contract) You must be eligible for CTC Clearance. To be eligible for CTC clearance you need to have lived in the UK for the last 3 years. You must be immediately available or on a very short notice period. Build....

Full Stack Engineer (Outside IR35) £450 - £475 per day Fully Remote + Outside IR35 + Remote + Company Training + 3 month initial 1x Extension Expected Are you a Full Stack Engineer that wants to work fully remote for a UK based tech giant that is building a state of the art inhouse CRM system? Do you want to work in a small tightknit team with other senior engineers and developers that are finalising a long term project with the potential to have at least 1 if not 2 extensions? This company have a newly formed UK operations but are backed by a global leader in the digital marketing space. The ideal candidate will be a Full Stack Engineer with experience with JavaScript, TypeScript, MongoDB, React and Node.js and are happy to work fully remote. THE ROLE: Design, deploy and maintain clean code Build scalable backend services in Node.js and TypeScript Design and maintain relational and document databases in PostgreSQL and MongoDB Troubleshoot all systems to ensure...

Full Stack Engineer (Outside IR35) £450 - £475 per day Fully Remote + Outside IR35 + Remote + Company Training + 3 month initial 1x Extension Expected Are you a Full Stack Engineer that wants to work fully remote for a UK based tech giant that is building a state of the art inhouse CRM system? Do you want to work in a small tightknit team with other senior engineers and developers that are finalising a long term project with the potential to have at least 1 if not 2 extensions? This company have a newly formed UK operations but are backed by a global leader in the digital marketing space. The ideal candidate will be a Full Stack Engineer with experience with JavaScript, TypeScript, MongoDB, React and Node.js and are happy to work fully remote. THE ROLE: Design, deploy and maintain clean code Build scalable backend services in Node.js and TypeScript Design and maintain relational and document databases in PostgreSQL and MongoDB...

Our client is a high growth business undergoing a significant transformation across a range of verticals within the business. The transformation programme covers people, processes and systems, and will include the hands on configuration of Netsuite. You will collate and translate business requirements into NetSuite, working closely with the business teams, project managers and developers to ensure solutions are delivered accurately and efficiently. Although the project has a strong finance focus, you will support a range of workstreams and play a key role in shaping a scalable, “best practice” ERP solution. Responsibilities include: Provide hands‑on NetSuite configuration to meet finance and operational needs – this is not a programme manager role, you’ll need to be a functional expert. Lead functional designs and configuration requirements for integrations across the wider business. Collaborate with the finance team (and other stakeholders) and project...

Data Architect (Contract) - Lakehouse, Azure, AWS. Rate - £700 per day. Status - Outside IR35. Duration - 6 Months (Initial). Locations - London, Manchester, or Leeds. Security Clearance - Must be SC Cleared or able to be cleared We have recently partnered with a leading consultancy seeking contract Data Architects for several migration projects from legacy platforms to modern cloud data platforms. We are hiring for senior-level Data Architects for high-profile public-sector projects. This is an opportunity to lead technical strategy for large-scale legacy-to-new migrations, moving from on-premises environments to modern cloud architectures. Platform & Technical Focus You will be responsible for designing and implementing architectures across diverse cloud-native stacks: AWS Ecosystem: Implementing solutions using Redshift Spectrum, S3, Glue, and EMR. Azure Ecosystem: Leading migrations and deliveries using Databricks and...

Microsoft Technology AI Architect - 3 months contract - onsite London Based Position Overview We are looking for a Microsoft Technology AI Architect to design and implement an enterprise‑grade AI Solution Development & Governance Framework that enables over 100 AI and data use cases. You’ll embed with a single UK financial services client, shaping a scalable, secure, and auditable approach across Copilot Studio (Power Platform) and Azure AI Foundry (with scope to extend to non‑Microsoft AI where appropriate). The role balances innovation with proportional governance and clear SDLC practices to support future ISO/IEC 42001 accreditation and alignment to ISO/IEC 27001 . Salary & Benefits The budgeted day rate for this role is up to £735 per day - experience dependent Outside of IR35 Responsibilities Define the AI Solution Development Strategy & Governance Framework , aligning AI adoption to business outcomes, risk appetite, and...

Department: Technology Team: AI Foundry Location: London, Hybrid or Remote Position type: Contractor (umbrella – inside IR35) until 24th December 2026; Full Time What the hiring manager says The Africa AI Language Initiative is one of our most strategically important efforts — aiming to build Africa-first, open, locally representative AI models across the continent’s most widely spoken languages. As our Subject Matter Expert, you will play a pivotal role in shaping model design, guiding technical execution, and ensuring high-quality delivery across multiple partners. Director of AI Initiatives About the team The Africa AI Language Initiative brings together mobile operators, African researchers, startups, academia, and GSMA to build and deploy open, representative language models for Africa. The team is multidisciplinary — spanning AI research, data governance, telco engagement, technical programme delivery, and community development. About the role...

Title: Golang Developer Length: 6-months contract Rate: £400 per day (Outside IR35) Contact: Thomas.price@forsythbarnes.com Overview We are looking for an experienced Golang Developer to join our engineering team and play a key role in building scalable, high-performance systems. You will work on modernising our architecture, developing microservices, and ensuring reliability across production environments. Key Responsibilities • Design, develop, and maintain scalable microservices using Golang • Contribute to system architecture decisions, including migration from monolith to microservices • Optimise and manage PostgreSQL databases, including indexing and partitioning strategies • Ensure application performance and reliability through monitoring, alerting, and testing • Implement and manage asynchronous communication using Kafka • Build and maintain deployment pipelines and support production environments • Collaborate with cross-functional teams...

DevOps Engineer (Outside IR35) £450 - £475 per day Fully Remote + Outside IR35 + Remote + Company Training + 3 month initial 1x Extension Expected Are you a DevOps Engineer that wants to work fully remote for a UK based tech giant that is building a state of the art inhouse CRM system? Do you want to work in a small tightknit team with other senior engineers and developers that are finalising a long term project with the potential to have at least 1 if not 2 extensions? This company have a newly formed UK operations but are backed by a global leader in the digital marketing space. The ideal candidate will be a DevOps Engineer with experience with a variety of cloud systems like AWS and Azure and are happy to work fully remote. THE ROLE: Design, deploy and maintain cloud infrastructure Set up and configure main databases like SQL or NoSQL Implement CI/CD pipelines Troubleshoot all systems to ensure a smooth implementation THE PERSON: DevOps Experience...

DevOps Engineer (Outside IR35) £450 - £475 per day Fully Remote + Outside IR35 + Remote + Company Training + 3 month initial 1x Extension Expected Are you a DevOps Engineer that wants to work fully remote for a UK based tech giant that is building a state of the art inhouse CRM system? Do you want to work in a small tightknit team with other senior engineers and developers that are finalising a long term project with the potential to have at least 1 if not 2 extensions? This company have a newly formed UK operations but are backed by a global leader in the digital marketing space. The ideal candidate will be a DevOps Engineer with experience with a variety of cloud systems like AWS and Azure and are happy to work fully remote. THE ROLE: Design, deploy and maintain cloud infrastructure Set up and configure main databases like SQL or NoSQL Implement CI/CD pipelines Troubleshoot all systems to ensure a smooth implementation...

Senior AI Engineer | £600/day Outside IR35 | 6-Month Contract Industry: Technology / Capital Markets Location: London - 3 days in office Job Type: Contract Our client, a forward-thinking technology organisation, is seeking a Senior AI Engineer to join a team building production-grade AI systems powered by large language models (LLMs). You will work closely with software engineers and product stakeholders to design, develop, and deploy scalable AI applications, focusing on multi-agent orchestration, intelligent tool integration, and reliable production workflows. Responsibilities Design and implement LLM-powered AI systems, including RAG pipelines, vector/knowledge databases, and agentic frameworks. Build and maintain production-grade AI applications with clean code, APIs, data pipelines, and robust error handling. Develop and maintain evaluation frameworks to measure and monitor system performance, accuracy, and reliability. Implement feedback loops...

Role: Full-Stack Engineer Salary/Rate: £250-300 per day outside IR35 Location: Mainly remote - occasional London visits Contract Duration: 12-months We are currently looking for a Full-Stack Engineer for our client, an independent research technology start-up. This Full-Stack Engineer role is mainly remote, with occasional visits to the London office, as required by the business. Candidates must be based in the UK and already have the right to work. There is no further flexibility with the on-site requirement. The contract for the Full-Stack Engineer position is for 12-months, with potential to extend, operating outside IR35. Essential skills/experience required: Proven previous experience as a full-stack engineer Python (Flask) React background Comfortable working in AWS-hosted environments (with EKS) Proficiency in Git-based development workflows Experience working independently and communicating...