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14 full stack developer jobs found

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full stack developer £400 - £500
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Outside Spy
Apr 22, 2026
6 Months or more
Senior Full Stack Developer at IntecSelect, Tower of London, 6 Months, £450-£600 per day
£450 - £600 per day
Outside Spy Tower of London, UK
Senior Full Stack Developer (Contract) Outside IR35 | Remote | Up to £600/day Overview We're partnering with a specialist software consultancy delivering business-critical platforms across financial services and pensions. They're looking for a Senior Full Stack Developer who enjoys proper engineering - clean architecture, ownership of solutions, and working alongside experienced senior engineers and QA specialists. This is a hands-on delivery role (no line management, no ticket-factory environments) with meaningful technical influence across the full stack. What you'll be doing Designing and building end-to-end full-stack solutionsin a modern cloud environment Backend development using Python and C# Frontend development with TypeScript and React Working within Azure (Functions, Azure SQL, Service Bus, ADF) Contributing to architecture discussions, technical design, and code reviews Applying pragmatic AI-assisted/agentic engineering practices to improve delivery...
Outside Spy
Apr 30, 2026
Duration not stated
Full Stack Software Developer - SC Cleared at The Talent Locker, Farnborough, £500-£550 per day
£500 - £550 per day
Outside Spy Farnborough, UK
Outside IR35 Full Stack Software Developer - LLM/AI, Farnborough, Hybrid, £500-550 per day Outside IR35 Long term contract opportunity for a full stack engineer with experience in LLM. This is for a defence consultancy and security clearance (SC) would be needed prior to engagement. Due to the nature of the role, 2-3 days per week in Farnborough is needed. Key skills required Full stack development experience (Mid-senior level) PostgreSQL Python React JSON LLM and other AI Approaches - GenAI If you have worked in a security cleared environment, and skilled with LLM and AI Approaches, please apply.
Outside Spy
Apr 24, 2026
up to 6 Months
Technical Lead (.Net/React) | Outside IR35 at SR2 - Socially Responsible Recruitment, Bristol, 3 Months, £500-£525 per day
£500 - £525 per day
Outside Spy Bristol, UK
Technical Lead (.Net/React) | Outside IR35 .Net | React | SQL Sever We're working with a consultancy that has just secured a new project and is looking to bring in an experienced Technical Lead/Full-Stack Developer to support delivery from the outset. This is a hands-on role with a blend of technical leadership and active development, ideal for someone who enjoys setting standards while still being deep in the code. The Role You'll play a key role in getting the project off the ground, owning initial technical and infrastructure setup, contributing to development, and providing light-touch leadership across the team. This is a delivery-focused environment where you'll take on more complex tickets while helping to drive engineering best practice. Key Responsibilities Lead initial technical and infrastructure setup to enable development Contribute heavily to hands-on coding (c.80% of the role) Pick up and deliver complex development tickets Conduct code reviews and...
Outside Spy
Apr 24, 2026
up to 6 Months
Technical Lead (.Net/React) | Outside IR35 | Remote at SR2 - Socially Responsible Recruitment, London, 3 Months, £500-£525 per day
£500 - £525 per day
Outside Spy Remote (London, UK)
Technical Lead (.Net/React) | Outside IR35 | Remote .Net | React | SQL Sever We're working with a consultancy that has just secured a new project and is looking to bring in an experienced Technical Lead/Full-Stack Developer to support delivery from the outset. This is a hands-on role with a blend of technical leadership and active development, ideal for someone who enjoys setting standards while still being deep in the code. The Role You'll play a key role in getting the project off the ground, owning initial technical and infrastructure setup, contributing to development, and providing light-touch leadership across the team. This is a delivery-focused environment where you'll take on more complex tickets while helping to drive engineering best practice. Key Responsibilities Lead initial technical and infrastructure setup to enable development Contribute heavily to hands-on coding (c.80% of the role) Pick up and deliver complex development tickets Conduct code...
Outside Spy
Apr 30, 2026
Duration not stated
Senior Mendix Developer at Searchstone Ltd, Multiple Locations, £425-£475 per year
£425 - £475 per day
Outside Spy United Kingdom
Senior Mendix Developer – Wealth & Asset Management (Outside IR35) Rate: Up to £450/day Contract: 2-month initial (likely extension to 6 months due to a large product backlog) IR35: Outside Location: UK-based (remote/Hybrid depending on client) Overview A wealth management client is seeking a Senior Mendix Developer with strong full-stack capabilities and direct experience working with securities, funds, or broader investment/asset management systems . Broader FS/Wealth Management experience is also fine.  You’ll be rebuilding an existing funds management and reconciliation system , currently in MS Access , and migrating/re-engineering it into a robust Mendix application as part of a fixed-term transformation project. Key Responsibilities Lead technical delivery of a Mendix-based funds management & reconciliation platform Translate the existing MS Access solution into scalable Mendix modules Work closely with SMEs from wealth/asset...
Outside Spy
Apr 24, 2026
Duration not stated
Senior .NET Developer at Haystack, London, £400 per day
£400 per day
Outside Spy London, England, United Kingdom
Contract .Net Developer - Insurance claims system | £400 Per Day (Outside IR35) We're working with a leading specialist insurer driving a massive digital transformation on this exciting opportunity. This is a high-impact role where you will help overhaul a modern claims automation platform using the latest .NET ecosystems. You will be at the core of a major integration programme, architecting scalable microservices and robust APIs that handle critical insurance workflows at scale. The Role Design and build high-performance backend solutions using .NET Core and .NET 5+ for a flagship claims platform. Architect and deploy scalable microservices that integrate seamlessly across a complex multi-system landscape. Take full ownership of the development lifecycle, from designing secure APIs to implementing rigorous unit testing. Collaborative with cross-functional delivery teams to ensure backend solutions meet high-availability and performance standards. Contribute to...
Outside Spy
Apr 24, 2026
6 Months or more
Power BI Engineer at La Fosse Associates, Woking, £475 - £525 per day
£475 - £525 per day
Outside Spy Woking, UK
Full job description Salary:  £475 - 525 per day Join a dynamic data delivery team where you'll create impactful reporting solutions that drive commercial success across sales and marketing operations. Power BI Developer - Contract Role Outside IR35 | Day Rate: £475-525 | Woking / Oxfordshire area | Hybrid | Initial 6 Months We have a new Power BI Developer contract opportunity with a large, well-established organisation, working within a fast-moving commercial environment across sales and marketing. You'll be part of a wider data delivery team supporting a Customer 360 programme, focused on building intuitive, high-quality reporting across sales pipelines and partner networks. This role suits someone who is strong on the frontend, confident gathering requirements from stakeholders, and comfortable working at pace. An early May start is ideal, if not sooner. Key Responsibilities Design and build engaging Power BI...
Outside Spy
Apr 22, 2026
Duration not stated
Application Developer at ECS Resource Group, Newark-On-Trent, £400 per day
£400 per day
Outside Spy Newark-On-Trent, England, United Kingdom
Application Developer - Stock Management Application Contract Length: 3 months Rate: £400 per day (Outside IR35) Location: Newark (1 day per week onsite) Overview We are seeking an experienced Application Developer to support the development of a stock management application. You’ll work closely with the product and technical team to enhance functionality, improve performance, and help deliver a robust, scalable solution within a short-term contract. This role suits a hands-on developer who is comfortable working across the full application stack and can contribute quickly in an agile environment. Key Responsibilities Design, develop, and maintain features for a stock management application Build responsive and performant user interfaces using React and Next.js Develop and integrate backend services using JavaScript Design, query, and optimise data models in PostgreSQL Collaborate with stakeholders to translate business requirements into technical...
Outside Spy
Apr 21, 2026
Duration not stated
Application Developer at ECS Resource Group Ltd, Nottinghamshire, £400 per Day
£400 per day
Outside Spy Nottinghamshire, UK
Application Developer - Stock Management Application Contract Length: 3 months Rate: £400 per day (Outside IR35) Location: Newark (1 day per week onsite) Overview We are seeking an experienced Application Developer to support the development of a stock management application. You'll work closely with the product and technical team to enhance functionality, improve performance, and help deliver a robust, scalable solution within a short-term contract. This role suits a hands-on developer who is comfortable working across the full application stack and can contribute quickly in an agile environment. Key Responsibilities Design, develop, and maintain features for a stock management application Build responsive and performant user interfaces using React and Next.js Develop and integrate backend services using JavaScript Design, query, and optimise data models in PostgreSQL Collaborate with stakeholders to translate business requirements into technical...
Outside Spy
Apr 21, 2026
Duration not stated
Application Developer at ECS, Newark, to £400 per day + Outside IR35
£300 - £400 per day
Outside Spy Newark, Nottinghamshire
Application Developer - Stock Management Application Contract Length: 3 months Rate: £400 per day (Outside IR35) Location: Newark (1 day per week onsite) Overview We are seeking an experienced Application Developer to support the development of a stock management application. You'll work closely with the product and technical team to enhance functionality, improve performance, and help deliver a robust, scalable solution within a short-term contract. This role suits a hands-on developer who is comfortable working across the full application stack and can contribute quickly in an agile environment. Key Responsibilities Design, develop, and maintain features for a stock management application Build responsive and performant user interfaces using React and Next.js Develop and integrate backend services using JavaScript Design, query, and optimise data models in PostgreSQL Collaborate with stakeholders to translate business requirements into technical solutions...
Outside Spy
Apr 20, 2026
Duration not stated
.NET Developer, CMS, Sitecore, Optimizely at Noir, London, £350-£400 per day
£350 - £400 per day
Outside Spy London, UK
.NET Developer, CMS, Sitecore, Optimizely, Umbraco - Remote (Tech stack: .NET Developer, CMS, Sitecore, Optimizely, Umbraco, .NET 10.0, C# 14, Angular 21, Agile, Programmer, Full Stack Engineer, Architect, .NET Developer) Our client is a leading digital agency powerhouse, delivering transformative online experiences for some of the most recognised brands across Europe. Renowned for blending creativity with cutting-edge technology, they have built an unrivalled reputation for crafting innovative, scalable .NET-driven digital platforms that engage millions of users daily. As part of their continued growth and a surge in exciting Greenfield digital transformation projects, they are looking to recruit a talented .NET Developer to join their award-winning development team. This is an opportunity to work in a fast-paced agency environment where no two projects are the same-ranging from enterprise CMS-driven websites to complex, high-traffic digital ecosystems. Working in...
Outside Spy
Apr 30, 2026
Duration not stated
Fullstack Software Developer at Peaple Talent, Bristol, £400-£475 per day
£400 - £475 per day
Outside Spy Bristol, SD
Fullstack Software Developer | Hybrid – South-West | 6-Month| £400-£475 p/d (outside IR35) Peaple Talent have partnered with a market leader in the Automotive Tech sector looking for a Fullstack developer on a 6-month contract basis. Ideally 1-2 days a week in office (South-West) but for the right candidate, the client can flex to fully remote if necessary. You will play a pivotal role in supporting this new project our client has embarked on. The client is doing a 1-stage interview process and slots are already booked in commencing Monday 12th with the successful candidate starting Tuesday 3rd January on a 6-month basis. Tech Stack C# .NET core .NET Angular SQL AWS Nice To Haves Python Ash Linux The Package £400 – £475 p/d Interested? If you think you’re right for this Senior Software developer role, then click the ‘Apply Now’ button, send us your CV and we’ll consider you for the first round of interviews. Back to all Jobs Search again View...
Outside Spy
Apr 24, 2026
6 Months or more
Fabric Data Engineer at La Fosse Associates, Woking, £500 - £550 per day
£500 - £550 per day
Outside Spy Woking, UK
Full job description Join a cutting-edge Customer 360 programme working with Microsoft Fabric and the latest Azure technologies in a collaborative, delivery-focused environment. Salary:  £500 - 550 per day Fabric Data Engineer - Contract Role Outside IR35 | Day Rate: £500-550pd | Woking / Oxfordshire area | Hybrid | Initial 6 Months We're also looking for a Data Engineer to join a programme of work within a commercial data environment, supporting a Customer 360 data management initiative across sales and marketing for a global brand. This role has a strong focus on Microsoft Fabric, the wider Azure stack, and modern development practices, including agentic development and GitHub-based workflows. You'll be hands-on, delivery-oriented, and comfortable working under pressure as part of a collaborative team. Key Responsibilities Design and build scalable data pipelines using Microsoft Fabric Develop and manage data products...
Outside Spy
Apr 22, 2026
Duration not stated
Data Warehouse Lead at Technical Staffing Resources Limited, Leatherhead, to £60 per hour
Outside Spy Leatherhead, UK
Technical Staffing Resources (TSR) are the in-house agency and master vendor for KBR who are a leading global engineering, construction, and services company. KBR support the hydrocarbon and government services markets on six continents. Serving their customers through diverse business units, KBR offer challenging assignments on some of the world's largest and most complex projects. We are seeking a  Data Warehouse Technical Lead  for a 12-month assignment, based in Leatherhead, Surrey On Offer Competitive hourly pay rate Outside IR35 work engagement Working 3 days in the office, 2 days from home  NB . We can only consider candidates with the right to live and work in the UK Purpose of the Role  For an experienced Data Warehouse Technical Lead to develop, support and evolve a critical on-premise ‘common data environment’ (CDE) within a wider integrated solution. The role will involve designing, building, testing, supporting and evolving the CDE, ensuring it...
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