14 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...

.Net/Azure developer; SC, C#, Azure, .NET framework, dot net, Powershell Rate - £450/day Outside IR 35 MUST HAVE security Clearance Contract Duration: 6 months Location: Taunton (on-site 1-2 days per week) We are seeking a highly skilled Lead Developer to provide hands-on technical leadership across enterprise-scale Azure-based platforms within a secure, highly regulated environment. This role combines deep engineering capability with architectural influence and team leadership. This role involves leading development teams, ensuring adherence to coding standards, and leveraging modern DevOps practices to ensure the delivery of secure, scalable cloud-native systems. The Lead Developer will act as the technical backbone of the project, ensuring that solutions are not only functional but also optimized for long-term stability. Key Responsibilities Lead development of applications using MS Azure services. Oversee source code management within Git....

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...

GIS Developer Our client is looking for a GIS developer. You will have longstanding experience of ArcGIS products. Skills required: - Arcade Expression - ArcGIS Enterprise and Online - ArcGIS Workflow Manager - Understanding of web GIS development using NodeJS, ReactJS/Dojo - GIS implementation Responsibilities: - Develop LLD for GIS projects - Adhere to solution design principles for data integration - Manage and lead the Sweet for ArcGIS development activities - merge the modularized code gathered from the development team on nightly basis to a single solution/project to prepare for build activities. - Administer Postgres database The contract is for 2 months initially outside IR35. The role is based on a hybrid working model with two days in Coventry each week. To be considered for the position please send your latest CV over. LA International is an award-winning partner of choice for many of the world's most influential companies and government organisations. Holding...

Kotlin Developer - Contract (Outside IR35) Remote (UK-based) £400 per day (Outside IR35) 2-Month Initial Contract We're looking for an experienced Kotlin Developer to join a fast-paced project on an initial 2-month contract. This is a great opportunity to work on a modern, high-impact platform with a collaborative and agile team. What you'll be doing Developing and maintaining Back End services using Kotlin Building scalable, high-performance applications Contributing to system design and technical decisions Writing clean, maintainable, and well-tested code What we're looking for Strong commercial experience with Kotlin Solid background in Back End development (eg JVM ecosystem) Experience with Spring Boot (or similar frameworks) Familiarity with RESTful APIs and microservices architecture Comfortable working in agile environments Ability to hit the ground running in a startup setting Nice to have Experience with cloud platforms (AWS, GCP, or Azure)...

Contract Software Developer - Full Stack (Azure, C# & React) - Immediate start 📍 Location: Leeds / UK Based – Flexible Working 📅 Duration: 6 months initially 💼 Contract Type: £450-500pd - OUTSIDE of IR35, Full time hours (37.5 per week) WRK digital are delighted to be shortlisting for Contract Software Developers with strong full-stack capabilities across .NET/C# and React applications for a leading Financial Services client. The Tech Stack Backend: C#, .NET Frontend: JavaScript/TypeScript with React Database: SQL (queries, views, and stored procedures) Infrastructure: CI/CD pipelines and application architecture The Role You'll be working in an agile development team on systems within the financial services sector. The team are developing high-quality applications with a focus on data integrity, compliance, and scalability. This is an exciting opportunity for an accomplished Contract Developer with an understanding of modern best-practice...

Senior WordPress Developer needed for our FMCG client in Glasgow for an initial 6-Week contract . The right candidate must have extensive demonstrable experience in WordPress & PHP with deep knowledge of the WordPress core engine , strong API integration expertise , and a proven ability to deliver secure, scalable, and high-performance solutions. This role is Outside IR35 and the majority of the time can be worked remotely , though there is a requirement for an initial two days onsite in Glasgow for workshops. Responsibilities will include developing, maintaining & optimising custom themes, plugins & features using modern, scalable, secure WordPress practices and designing & implementing integrations between WordPress and external systems using REST APIs, webhooks, SDKs, and Middleware. The right candidate must be a self-starter who can independently run WordPress audits, optimise performance and work closely with business stakeholders to prioritise...

🚀 Contract Full‑Stack JavaScript Developer 📍 Location: Fully Remote 📆 Duration: 6 Months 💼 IR35 Status: Outside IR35 💰 Rate: £500pd - £600pd Opus is partnered with a large ecommerce business scaling their engineering function to power through a digital transformation program and looking for a multiple Contract Full‑Stack JavaScript Developers to join the team. You’ll be working across modern front‑end and back‑end systems, shipping clean, scalable, and reliable code into production. If you love building performant UIs, robust APIs, and working with modern tooling, this one’s for you. 🔍 What You’ll Be Doing Building features end‑to‑end across React + Node.js Designing and developing reusable UI components and scalable APIs Working within a modern microservices architecture Contributing to technical decisions, architecture, and best practices Collaborating with product and design teams to deliver high‑quality releases Ensuring performance,...

Senior Software Engineer 6 month contract Based in Bristol Offering £60ph Outside IR35   Do you have experience in version control and configuration management (Git, AWS)? Do you have experience in Python(pytest)? Do you want to work with an industry-leading company?   If your answer to these is yes, then this could be the role for you!   As the Senior Software Engineer, you will be working alongside a market-leading Defence and Aerospace company who are constantly growing and developing. They are always looking to bring on new talents such as yourself and further develop your skills to enable you to grow within the company and industry. Do you the nature of the work you will be involved in, you will be required to go through MOD SC clearance.   You will be involved in: Take ownership of specific software work packages, including low-level planning, delivery, and reporting Design, implement,...

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...

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...

🚀 Contract Full‑Stack JavaScript Developer 📍  Location:  Fully Remote 📆  Duration:  6 Months 💼  IR35 Status:  Outside IR35 💰  Rate:  £450pd – £550pd Opus is partnered with a high‑growth tech company scaling their engineering function and looking for a  Contract Full‑Stack JavaScript Developer . You’ll be working across modern front‑end and back‑end systems, shipping clean, scalable, and reliable code into production. If you love building performant UIs, robust APIs, and working with modern tooling, this one’s for you. 🔍 What You’ll Be Doing Building features end‑to‑end across React + Node.js Designing and developing reusable UI components and scalable APIs Working within a modern microservices architecture Contributing to technical decisions, architecture, and best practices Collaborating with product and design teams to deliver high‑quality releases Ensuring performance, security, and reliability across the platform 🛠️ Tech Stack Core: React Node.js TypeScript...

Contract Full Stack JavaScript Developer Location: Fully Remote Duration: 6 months IR35 Status: Outside IR35 Rate: £450pd - £550pd Opus is partnered with a high growth tech company scaling their engineering function and looking for a Contract Full Stack JavaScript Developer . You'll be working across modern Front End and Back End systems, shipping clean, scalable, and reliable code into production. If you love building performant UIs, robust APIs, and working with modern tooling, this one's for you. What You'll Be Doing Building features end to end across React + Node.js Designing and developing reusable UI components and scalable APIs Working within a modern microservices architecture Contributing to technical decisions, architecture, and best practices Collaborating with product and design teams to deliver high quality releases Ensuring performance, security, and reliability across the platform Tech Stack Core: React Node.js TypeScript Next.js...