33 full stack developer jobs found

Full Stack Developer Fully Remote Outside IR35 £400 per day My client is looking for a Full Stack Developer (with a Back End focus) to support the delivery of a key integration project. This role centres around API development and system integration within a modern Microsoft tech environment, delivering scalable solutions in a collaborative and well-supported team. You'll join a close-knit, Agile squad with dedicated DevOps and QA resources-allowing you to focus on development, not firefighting. While Front End work in Angular/TypeScript is part of the role, it's mainly for functional enhancements-your core strength should be in .NET and Azure-based Back End development. Key Skills & Experience: Strong Back End development skills using .NET (C#) and Azure Experience designing and building secure APIs and microservices Hands-on integration work within financial services or similarly regulated environments Angular and TypeScript experience (focused on...

Full Stack Developer Fully Remote *Outside IR35* £400 per day My client is looking for a Full Stack Developer (with a back-end focus) to support the delivery of a key integration project. This role centres around API development and system integration within a modern Microsoft tech environment, delivering scalable solutions in a collaborative and well-supported team. You'll join a close-knit, Agile squad with dedicated DevOps and QA resources-allowing you to focus on development, not firefighting. While front-end work in Angular/TypeScript is part of the role, it's mainly for functional enhancements-your core strength should be in .NET and Azure-based back-end development. Key Skills & Experience: Strong back-end development skills using .NET (C#) and Azure Experience designing and building secure APIs and microservices Hands-on integration work within financial services or similarly regulated environments Angular and TypeScript experience...

Full Stack Developer Fully Remote ***Outside IR35*** £400 per day My client is looking for a Full Stack Developer (with a back-end focus) to support the delivery of a key integration project. This role centres around API development and system integration within a modern Microsoft tech environment, delivering scalable solutions in a collaborative and well-supported team. You'll join a close-knit, Agile squad with dedicated DevOps and QA resources -allowing you to focus on development, not firefighting. While front-end work in Angular/TypeScript is part of the role, it's mainly for functional enhancements -your core strength should be in .NET and Azure-based back-end development. Key Skills & Experience: Strong back-end development skills using .NET (C#) and Azure Experience designing and building secure APIs and microservices Hands-on integration work within financial services or similarly regulated environments Angular...

Front End Developer - SC CLEARED - OUTSIDE IR35 - HIRING ASAP Start date: ASAP Duration: 12 Months Location: 2 days every fortnight in the Portsmouth office Rate: £450 - £492 per day OUTSIDE IR35 SECURITY CLEARANCE REQUIRED Summary: Our client is looking for a Front End developer to work in the Mobile Apps team. The team are currently working on the MyNavy application which has recently been launched as a fully native app. Must Have Skills: MoD experience Communication and collaboration skills Experienced Web application developer Further Skills: Umbraco CMS & API Product Development TFS Build Agent Azure Environment Features - VM build Azure DevOps Tools Integration with SSO capabilities Knowledge of Azure Network configuration (eg Firewalls, Load Balancers) React UI Technologies MSSQL Database Management System ISS Web Server Administration

Full-Stack Developer - SC CLEARED - OUTSIDE IR35 - HIRING ASAP Start date: ASAP Duration: 12 Months Location: 2 days every fortnight in the Portsmouth office Rate: £450 - £492 per day OUTSIDE IR35 SECURITY CLEARANCE REQUIRED Summary: Our client is looking for a Back-end developer to work in the Mobile Apps team. The team are currently working on the MyNavy application which has recently been launched as a fully native app. Must Have Skills: MoD experience Communication and collaboration skills Experienced Web application developer Further Skills: Umbraco CMS & API Product Development TFS Build Agent Azure Environment Features - VM build Azure DevOps Tools Integration with SSO capabilities Knowledge of Azure Network configuration (eg Firewalls, Load Balancers) React UI Technologies MSSQL Database Management System ISS Web Server Administration

I am currently working with an exciting AI focused business who are looking for a Full Stack Developer to join their UK team. Role: Full Stack Developer Location: Fully Remote (UK) Contract: 12 Months Day Rate: £500 – £600 per day IR35 Status: Outside IR35 Key Responsibilities Develop and manage applications end-to-end, from design through to deployment Work closely with product and design teams to translate Figma/Sketch designs into production-ready applications Build and maintain scalable microservices-based systems Contribute to system architecture and scalability planning Support integration with third-party systems and services Participate in deployment and infrastructure design Technical Requirements Frontend React.js JavaScript / TypeScript (strong preference for TypeScript) Backend Python or NestJS Strong backend engineering capability (preferred focus) If keen please apply!

Senior Full Stack Developer - Outside IR35 - Contract - SC ideal We are looking for a senior full-stack developer to join our team, working collaboratively in a fast-paced environment with some ambiguity. This is a senior dev role with a focus on supporting more junior members of the team and sharing that with the existing tech lead. The product is a note-taking and summarisation tool for use in local government, for which the remaining technical work mainly comprises infrastructure, evals, technical improvements, and UCD-driven product features. Must have: Experience mentoring junior developers Previously given responsibility for a chunk of delivery Comfortable working in Python and Typescript + React Full-stack developer Nice to have: previous experience with AWS, Terraform, any UK government projects Slightly nice to have but lower priority: LLM/AI experience and Next.JS £600 per day outside IR35 Start date: 13/04/2026 End date: 30/10/2026...

Location: Reading - 1 day per week onsite (rest remote) Contract: 3-6 months initially with the view to extend Rate: £550 per day (Outside IR35) We are seeking a Full Stack Developer to support a telecommunications client, working across modern Front End and Back End technologies to deliver high-quality, scalable solutions. You will take ownership of requirements from brief through to delivery, producing well-structured code while collaborating with the wider development team. Essential Skills Strong experience with React and JavaScript/TypeScript in production environments. Solid Back End development experience using Python . Experience building and working with REST APIs (FastAPI preferred). Strong understanding of software engineering principles, design, and architecture . Experience delivering AI solutions . Ability to work independently from a brief while contributing to a team environment. Strong communication and collaboration...

Senior Full Stack Developer TypeScript, React, Node.js Contract 3 months initially Edinburgh (Hybrid) Rate: £400 - £450 a day Outside IR35 We're working with a well-established technology business to find a Senior Full Stack Developer for an immediate contract engagement click apply for full job details

🚀 Contract Full-Stack JavaScript Developer (AI Platform) 📍 Location: 3 days per week in London Office 📆 Duration: 4 weeks with a longer term extension afterwards. 💼 IR35 Status: Outside IR35 💰 Rate: £500p/d – £600p/d Opus is partnering with a cutting-edge FinTech start-up to secure a Contract Full-Stack JavaScript Developer . You’ll be joining a small, high-calibre team building a platform to improve workflows within the the FinTech space. They have a genuinely interesting problem at the intersection of frontend engineering, backend systems, and applied LLM tooling . This is a true 0–1 build , ideal if you enjoy ownership, clean abstractions, and shipping product quickly. 🧠 What You’ll Be Working On Building and extending agent-driven workflows. Developing context management and LLM entry points. Only application-layer LLM integrations, not model training) Expanding slide generation functions and data structures. Full-stack feature...

🚀  Contract Full-Stack JavaScript Developer (AI Platform) 📍  Location:  3 days per week in London Office 📆  Duration:  4 weeks with a longer term extension afterwards. 💼  IR35 Status:  Outside IR35 💰  Rate:  £500p/d – £600p/d Opus is partnering with a cutting-edge  FinTech start-up  to secure a  Contract Full-Stack JavaScript Developer . You’ll be joining a small, high-calibre team building a platform to improve workflows within the the FinTech space. They have a genuinely interesting problem at the intersection of  frontend engineering, backend systems, and applied LLM tooling . This is a  true 0–1 build , ideal if you enjoy ownership, clean abstractions, and shipping product quickly. 🧠 What You’ll Be Working On Building and extending  agent-driven workflows. Developing  context management and LLM entry points.  Only application-layer LLM integrations, not model training) Expanding  slide generation functions and data structures. Full-stack feature development, with a...

Contract Full-Stack JavaScript Developer (AI Platform) Location: 3 days per week in London Office Duration: 4 weeks with a longer term extension afterwards. IR35 Status: Outside IR35 Rate: £500p/d - £600p/d Opus is partnering with a cutting-edge FinTech start-up to secure a Contract Full-Stack JavaScript Developer . You'll be joining a small, high-calibre team building a platform to improve workflows within the FinTech space. They have a genuinely interesting problem at the intersection of Front End engineering, Back End systems, and applied LLM tooling . This is a true 0-1 build , ideal if you enjoy ownership, clean abstractions, and shipping product quickly. What You'll Be Working On Building and extending agent-driven workflows. Developing context management and LLM entry points. Only application-layer LLM integrations, not model training) Expanding slide generation functions and data structures. Full-stack feature development, with a Front...

Contract Full-Stack JavaScript Developer (AI Platform) Location: 3 days per week in London Office Duration: 4 weeks with a longer term extension afterwards. IR35 Status: Outside IR35 Rate: £500p/d - £600p/d Opus is partnering with a cutting-edge FinTech start-up to secure a Contract Full-Stack JavaScript Developer . You'll be joining a small, high-calibre team building a platform to improve workflows within the the FinTech space. They have a genuinely interesting problem at the intersection of frontend engineering, backend systems, and applied LLM tooling . This is a true 0 -1 build , ideal if you enjoy ownership, clean abstractions, and shipping product quickly. What You'll Be Working On Building and extending agent-driven workflows. Developing context management and LLM entry points. Only application-layer LLM integrations, not model training) Expanding slide generation functions and data structures....

🚀 Contract Full-Stack JavaScript Developer 📍 Location: Fully Remote 📆 Duration: 6 Months 💼 IR35 Status: Outside IR35 💰 Rate: £500p/d - £600p/d Opus is partnering with a FinTech start-up to secure a Contract Full-Stack JavaScript Developer. You will be working in a small team to build the product from 0-1. If you're passionate about clean code, scalable architecture, and modern tooling. 🛠️ Tech Stack React.js Next.js Node.js TypeScript AWS Terraform 📩 Interested? Apply now or send your latest CV to matthew.carter@opusrs.com ASAP! If you haven’t heard back within 48 hours, please assume your application was not successful this time.

Full Stack Developer (TypeScript / React / Node.js) – DV Cleared Contract | £600–£650/day | Outside IR35 We’re supporting a high-profile programme within the secure government space and are looking for an experienced DV Cleared Full Stack Developer to join an established delivery team. Key Details: Rate: £600–£650 per day (Outside IR35) Clearance: Active DV required Start Date: End of April Location: 1–2 days onsite per week (UK-based) Interview Process: 2 stages Responsibilities: Build and maintain scalable full stack applications using TypeScript, React, and Node.js Develop secure, high-performance APIs and front-end interfaces Deploy and manage applications within AWS cloud environments Collaborate with cross-functional teams in an Agile delivery setting Contribute to architecture decisions and best practice engineering standards Required Experience: Strong commercial experience across TypeScript, React, and Node.js...

Senior Full-stack Python Typescript AI Engineer- Outside IR35   ROLE   This position is for a Senior Backend Developer working in python and typescript to support the development on a SaaS product with a focus on Ai.   This role involves designing, building, and optimising scalable backend services and APIs to support a single-tenant, multi‑instance SaaS platform, while contributing to the architecture and implementation of AI‑driven components such as Retrieval‑Augmented Generation (RAG) pipelines, vector databases, semantic search, and structured or knowledge‑graph‑based data modelling approaches. You will support the design of robust data models and pipelines capable of handling both structured and unstructured data with strong traceability and auditability, and help transition prototypes into production‑ready systems with a focus on security, access control, performance, reliability, observability, and monitoring. The role also includes building and managing...

Dynamics 365 CRM & Business Central Developer | £450 - £500 We're working with a rapidly expanding UK IT Managed Services Provider that is heavily investing in the automation of their internal ecosystem on this exciting opportunity. This is a high-impact contract role where you will bridge the gap between CRM and Business Central to drive operational excellence. As a key technical figure, you will be responsible for re-engineering the internal Dynamics environment, ensuring seamless workflows and robust data flow across the business. You’ll leverage the full Power Platform stack to turn a core platform into a powerful automation engine. The Role Lead the stabilization and technical improvement of the Dynamics 365 CRM platform to support business growth. Design and deliver complex integrations between Dynamics 365 Sales/Service and Dynamics 365 Business Central. Build and deploy advanced automations using Power Automate to streamline the end-to-end customer...

JavaScript Developer, React focused, Product Engineer (Contract) | React, TypeScript, Node.js, AWS | Product-Led Delivery | £400-450/day | Outside IR35 | Fully Remote (UK) | 6-Month Contract We’re hiring multiple Senior Product Engineers (contractors) with strong frontend or full-stack capabilities to join a large-scale public sector transformation programme. This role focuses on building modern, user-centric digital products as part of cross-functional teams spanning product, design, and engineering. You’ll be working on high-impact platforms, delivering intuitive, scalable web applications used by a wide range of users. This is a 6-month initial contract, ideal for engineers who combine strong frontend expertise with product thinking and a pragmatic approach to delivery. The Role | JavaScript Developer, React focused, Product Engineer (Contract) | React, TypeScript, Node.js, AWS | Product-Led Delivery | £400-450/day | Outside IR35 | Fully Remote (UK) |...

JavaScript Developer, React focused, Product Engineer (Contract) | React, TypeScript, Node.js, AWS | Product-Led Delivery | £400-450/day | Outside IR35 | Fully Remote (UK) | 6-Month Contract We’re hiring multiple Senior Product Engineers (contractors) with strong frontend or full-stack capabilities to join a large-scale public sector transformation programme. This role focuses on building modern, user-centric digital products as part of cross-functional teams spanning product, design, and engineering. You’ll be working on high-impact platforms, delivering intuitive, scalable web applications used by a wide range of users. This is a 6-month initial contract, ideal for engineers who combine strong frontend expertise with product thinking and a pragmatic approach to delivery. The Role | JavaScript Developer, React focused, Product Engineer (Contract) | React, TypeScript, Node.js, AWS | Product-Led Delivery | £400-450/day | Outside IR35 | Fully Remote (UK) |...

Automation Developer We're working with a major enterprise transformation leader on this exciting opportunity. This is a high-impact, Outside IR35 contract for a seasoned Power Automate expert to join a large-scale digital evolution. You will lead the charge in designing and deploying sophisticated RPA and intelligent automation solutions that integrate cutting-edge AI, OCR, and Machine Learning capabilities. The Role Lead the end-to-end automation lifecycle, translating complex process requirements into robust Solution Design Documents (SDDs). Build and optimize high-performance Power Automate cloud flows and hybrid RPA workflows to drive operational efficiency. Integrate advanced Intelligent Automation capabilities, including Machine Learning (ML), NLP, and OCR, into existing frameworks. Collaborate with Technical and Change teams within an Azure DevOps environment to ensure seamless deployment and post-go-live support. Champion development best practices and...