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54 software developer jobs found

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Outside Spy
Sep 22, 2026
6 Months or more
Software Developer (C#, .NET) - Outside IR35 - Remote/UK at Hunter Bond, London, 6 Months, to £500 per day (Outside IR35)
£400 - £500 per day
Outside Spy Remote (London, UK)
Senior Product Developer - 3 Positions A leading Market Data and Intelligence organisation is looking for three Senior Product Developers to join its engineering teams, working on software and data products within a large-scale, data-driven environment. The roles will focus on developing and enhancing applications using .NET/C#, Azure and SQL Server , with responsibility across the full software development life cycle. You'll be working on products supporting financial institutions and investment professionals, solving complex technical and data challenges. The technology environment is centred around the Microsoft ecosystem , with .NET/C#, SQL Server and Azure forming key parts of the platform. Depending on the product area, you may also work with Azure DevOps, CI/CD, REST APIs, Blazor and data ingestion/ETL . As a senior developer, you'll contribute to technical decisions, improve existing systems, address technical debt and work closely with Product, Engineering,...
Outside Spy
Sep 21, 2026
Duration not stated
Software Developer - Backend at Hays Specialist Recruitment, Cardiff, £350.0-£450.0 per year
£350 - £450 per day
Outside Spy Cardiff, UK
Recruiting for a Software Developer to migrate integrations between two systems. The integrations will use Microsoft Fabric pipelines to manage these data flows. Your new role Implementing scalable, high quality, secure and high-performance integrations through systems analysis, specifications, designing, programming, configuring, testing, deployment, user training and documentation. Collaborating with relevant users to ensure the effective integration of systems, where possible using adopted integration standards and middleware. Maintaining an up-to-date knowledge of IT developments and software analysis, design and programming tools. Assisting with the provision of user documentation, training and training material in the use of information systems, where needed. Bringing a positive, "can do" attitude to the role; assisting the university in supporting and developing its digital estate. What you'll need to succeed A practical experience and understanding of using...
Outside Spy
Sep 16, 2026
6 Months or more
Software Developer in Test at Hunter Bond, London, 6 Months, £Contract Rate
Outside Spy London, UK
Title: Software Developer in Test Client: Growing Fintech Rate: up to £600 P/D (Outside IR35!) Location: London (Hybrid) We are looking for a talented an enthusiastic SDET to join a rapidly expanding fintech based in London! You will get the chance to work along side some of the best SDETs and software engineers that the industry has to offer whilst aiding in the development of their C# platforms! If you are a tech driven and enthusiastic individual this is the role for you! Requirements: Strong experience in automation testing - building and implementing frameworks etc Strong experience working with C# Experience with JavaScript - nice to have Experience working in capital markets finance Experience with performance testing If this sounds like you then please do not hesitate to reach out!
Outside Spy
Sep 16, 2026
6 Months or more
Software Developer (C#, .NET) - Outside IR35 - Remote/UK at Hunter Bond, London, 6 Months, to £500 per day (Outside IR35)
£400 - £500 per day
Outside Spy Remote (London, UK)
Senior Product Developer - 3 Positions A leading Market Data and Intelligence organisation is looking for three Senior Product Developers to join its engineering teams, working on software and data products within a large-scale, data-driven environment. The roles will focus on developing and enhancing applications using .NET/C#, Azure and SQL Server , with responsibility across the full software development lifecycle. You'll be working on products supporting financial institutions and investment professionals, solving complex technical and data challenges. The technology environment is centred around the Microsoft ecosystem , with .NET/C#, SQL Server and Azure forming key parts of the platform. Depending on the product area, you may also work with Azure DevOps, CI/CD, REST APIs, Blazor and data ingestion/ETL . As a senior developer, you'll contribute to technical decisions, improve existing systems, address technical debt and work closely with Product, Engineering,...
Outside Spy
Sep 14, 2026
Duration not stated
CAD-CAM Software Developer at Tec Partners Recruitment Ltd, The Park, £550 to £650 per Day
£550 - £650 per day
Outside Spy The Park, Nottingham, UK
CAD-CAM Software Developer Type: Outside IR35 Contract Rate: £550 - £650/day Duration: 6 Months Location: Nottingham (Hybrid) We’re looking for an experienced CAD-CAM Developer to join a specialist software development team working on advanced applications for the steel fabrication and machinery industries. This is a hands-on contract opportunity for a developer who can hit the ground running, move between development teams and contribute to complex software projects from day one. The Opportunity You’ll work within a dedicated CAD-CAM division developing cloud-based enterprise software and native/browser applications used by clients worldwide. You’ll work across different areas of the CAD-CAM platform depending on project demand, tackling challenges around 3D geometry, mathematical algorithms, optimisation, toolpath generation and automated manufacturing workflows. Key requirements Strong commercial experience with C# / .NET and ASP.NET Core 8+ Experience developing...
Outside Spy
Sep 23, 2026
6 Months or more
Contract Developer - Golang/C# - Hybrid Manchester at GBV Ltd, Manchester, 6 Months, £480-£540 per day
£480 - £540 per day
Outside Spy Manchester, UK
?? Contract Software Developer - C#/Golang/SQL ?? Manchester - Hybrid (2 days per week onsite) ?? £500-£540 per day ?? 6-month initial contract ? Outside IR35 We're working with a major technology-led organisation looking for an experienced Software Developer to join a high-performing engineering team responsible for a real-time, high-volume transactional platform . This is a hands-on development role working across Back End services, microservices and data-intensive applications in an environment where performance, reliability and scalability are critical . The core technology stack includes C#/.NET, Golang and SQL Server , with the wider environment incorporating Windows applications, microservices, Kafka, Linux and cloud/web technologies. ??? What you'll be doing Developing highly efficient, robust and maintainable applications and Back End services Building and enhancing services using C#/.NET and Golang Working extensively with SQL Server...
Outside Spy
Sep 15, 2026
Duration not stated
SDET - 6 Month Rolling Contract - up to £600 P/D at Hunter Bond, London Area, to £600 per day
£600 per day
Outside Spy London, UK
Title – Software Developer in Test Client – Growing Fintech Rate - Up to £600 P/D Location – London (Hybrid)   We are looking for a talented an enthusiastic SDET to join a rapidly expanding fintech based in London!!   You will get the chance to work along side some of the best SDETs and software engineers that the industry has to offer whilst aiding in the development of their Java platforms!!   If you are a tech driven and enthusiastic individual this is the role for you!!   Requirements:   Strong experience in automation testing - building and implementing frameworks etc Strong experience working with Java/C# Experience with JavaScript Experience working in capital markets finance Experience with performance testing   If this sounds like you then please do not hesitate to reach out!
Outside Spy
Sep 14, 2026
Duration not stated
C#, WPF, .NET Developer - (Outside IR35) at SDL Solutions Limited, United Kingdom, £Contract Rate
Outside Spy United Kingdom
C#, WPF, .NET Developer is required by global company for an initial 12-month contract. The successful candidate will have experience with detailed design, development, implementation, integration, and testing of software in C# to build windows/web-based applications. The ideal contractor would have experience in software development in C# (.NET Core 2.1+, .NET Framework 4.6+) and Visual Studio 2022. Experience in WPF, user interface design and MVC/MVVM design patterns. Experience with connecting to and consuming RESTful web services. Experience with generic design-patterns (Dependency Injection, Inversion of Control and similar) and .NET Frameworks (MVVM, WPF, MEF, Entity Framework) in the construction of large and complex software applications. Experience of using version control (GIT), change control and code quality control/review processes. Experience of working in SCRUM environments where regular builds, unit tests and integration testing are the norm. Can contribute...
Outside Spy
Sep 14, 2026
6 Months or more
C#, WPF, .NET Developer - (Outside IR35) at SDL Solutions Limited, London, 12 Months, £Contract Rate
Outside Spy London, Hertfordshire, Cambridge , UK
C#, WPF, .NET Developer is required by global company for an initial 12-month contract. The successful candidate will have experience with detailed design, development, implementation, integration, and testing of software in C# to build windows/web-based applications. The ideal contractor would have experience in software development in C# (.NET Core 2.1+, .NET Framework 4.6+) and Visual Studio 2022. Experience in WPF, user interface design and MVC/MVVM design patterns. Experience with connecting to and consuming RESTful web services. Experience with generic design-patterns (Dependency Injection, Inversion of Control and similar) and .NET Frameworks (MVVM, WPF, MEF, Entity Framework) in the construction of large and complex software applications. Experience of using version control (GIT), change control and code quality control/review processes. Experience of working in SCRUM environments where regular builds, unit tests and integration testing are the norm. Can...
Outside Spy
Sep 14, 2026
Duration not stated
C#, WPF, .NET Developer - (Outside IR35) at SDL Solutions Limited, London, £Negotiable Rate
Outside Spy London, UK
C#, WPF, .NET Developer - Hybrid - Outside IR35 - 12 month contract C#, WPF, .NET Developer is required by global company for an initial 12-month contract. The successful candidate will have experience with detailed design, development, implementation, integration, and testing of software in C# to build windows/web-based applications. The ideal contractor would have experience in software development in C# (.NET Core 2.1+, .NET Framework 4.6+) and Visual Studio 2022. Experience in WPF, user interface design and MVC/MVVM design patterns. Experience with connecting to and consuming RESTful web services. Experience with generic design-patterns (Dependency Injection, Inversion of Control and similar) and .NET Frameworks (MVVM, WPF, MEF, Entity Framework) in the construction of large and complex software applications. Experience of using version control (GIT), change control and code quality control/review processes. Experience of working in SCRUM...
Outside Spy
Sep 23, 2026
6 Months or more
Junior Python Developer at Square One Resources, England, 6 Months, £150-£175 per day
£150 - £175 per day
Outside Spy England, UK
Job Title: Python Engineer Location: UK Based - Fully Remote Salary/Rate: Up to £175 Daily Outside IR35 Start Date: In the next two weeks Job Type: Initial 6 month contact Company Introduction We have an exciting opportunity now available with one of our sector-leading consultancy clients! They are currently looking for a Python Engineer to join their team for an initial six-month contract. Job Summary: We are seeking a dynamic and passionate Python Developer to join our innovative software development team. In this role, you will be instrumental in designing, developing, and maintaining scalable applications that drive our core business operations. Your expertise will help shape the future of our technology solutions, ensuring high performance, security, and seamless integration with various platforms and services. This position offers an exciting opportunity to work with cutting-edge tools and technologies in a fast-paced environment committed to excellence...
Outside Spy
Sep 23, 2026
6 Months or more
Senior Java Developer (Back Office/Settlements/Post-Trade) - Outside IR35 - Hybrid in Central London at Hunter Bond, London, 12 Months, to 700 per day (Outside IR35)
£600 - £700 per day
Outside Spy London, UK
Senior Java Developer - Outside IR35 - Up to £700 per day We have partnered with a leader in the financial services sector who is looking for experienced Senior Java Engineers to join their Settlements team . This is a hands-on engineering role focused on developing and enhancing software supporting complex post-trade and settlement workflows . you'll work as part of an experienced engineering team, contributing to both new and existing systems within a fast-moving financial markets environment. The Role Develop and maintain Server Side Java/JVM applications supporting settlement and post-trade processes. Build robust, scalable services using Spring and Spring Boot . Work across greenfield and brownfield development projects. Collaborate with engineers and business stakeholders to understand requirements and deliver effective solutions. Contribute to technical design, development, testing and production delivery. Work with Kubernetes, event-driven...
Outside Spy
Sep 22, 2026
Duration not stated
Developer – Fullstack, DV Cleared, Outside IR35 at Bangura Solutions, Greater Bristol Area, £Contract Rate
Outside Spy Bristol, UK
Long-term Fullstack (Java) Developer role available for a UKIC DV Cleared individual.   Working on a secure programme, this will be a broad development role that will give you an opportunity to develop cutting edge web applications – frontend (Vue/React or Angular) and backend (Core Java). Suited candidates will have a deep experience in developing, integrating, and maintaining secure web applications.   You will have good version control, code reviews, and secure development practices, having worked within an Agile environment. You will also have good experience with Linux based environments. Any experience of MongoDB, GitLab, CI/CD, Docker, AWS, microservices or cloud-native development would be advantageous. For candidates without this experience, this contract role will offer the opportunity to build on these skills.   This role requires a self-starting Java Developer who can hit the ground running and who thrives in consistent...
Outside Spy
Sep 22, 2026
Duration not stated
Blue Yonder WMS Developer - £650 per day - Outside IR35 at Exalto Consulting, London Area, ££650 per day
£650 per day
Outside Spy London Area, United Kingdom
My client, a Global Supply Chain organisation are looking to recruit an experienced Blue Yonder WMS Developer for an initial 6 month contract to start ASAP.   Key Responsibilities: Develop, configure, and deploy Blue Yonder WMS customisations and integrations in line with business requirements and best practices. Code quality, documentation, and solution design. Perform enhancements, upgrades, and system configuration within the Blue Yonder MOCA architecture. Design and implement WMS reports, interfaces, and data extracts using SQL and related tools. Conduct thorough unit testing to ensure solution quality and performance. Participate in system upgrades, patches, and version migrations, ensuring minimal disruption to business operations. Produce and maintain comprehensive technical documentation, including functional specifications, configuration records, and operational procedures. Provide second and third-line support for Blue Yonder WMS...
Outside Spy
Sep 22, 2026
Duration not stated
Android Developer - Government at BrightBox Group, City Centre, £Contract Rate
£400 per day
Outside Spy City Centre, Birmingham, UK
Job Title: Android Developer Duration: Six months Day Rate: £400pd Outside IR35 Location: Four days remote, one day per week in Manchester  Start Date: Immediate    We are seeking an experienced Android Developer to join our team and contribute to a national-scale mobile app within a public sector organisation that prioritises engineering excellence. You will be part of a forward-thinking environment with a modern setup that includes automated testing, ephemeral branch deployments, and performance testing using AWS CodeBuild.   In this role, you'll appreciate a focus on clean architecture and thorough test coverage. Working mostly remotely, you’ll be crucial in our efforts to deliver high-quality software.   Key Responsibilities: Integrate internal government services into a heavily utilised mobile app. Develop features end to end, maintaining high standards in testing and quality throughout.   Essential Skills: Strong proficiency in Kotlin Experience with Jetpack Compose...
Outside Spy
Sep 22, 2026
Duration not stated
Senior Blazor Developer at Click, United Kingdom, £Contract Rate
Outside Spy United Kingdom
Senior Blazor Developer - C#/.NET 4-6 Month Contract | UK Remote - £400 per day, Outside IR35 We're looking for an experienced Senior Blazor Developer to join an established development team on an initial 4-6 month contract. This role is heavily focused on the Front End of modern .NET applications, using Blazor and C# to build responsive, intuitive and maintainable user interfaces. You'll still need a strong understanding of the wider .NET ecosystem and how Front End applications integrate with APIs, databases and Azure services, but we're particularly interested in engineers who have genuinely delivered commercial applications using Blazor. You'll be joining a small development team working across business-critical internal and customer-facing systems, taking ownership of features from design through to delivery. What you'll be doing Developing and enhancing web applications using Blazor and C#/.NET. Building reusable, maintainable UI components and...
Outside Spy
Sep 22, 2026
6 Months or more
Full Stack Developer at Mindclon UK Ltd, Glasgow, 6 Months, £350-£375 per day
£350 - £375 per day
Outside Spy Glasgow, UK
Outside IR35 MindClon builds healthcare and medicolegal software that handles sensitive personal data under UK GDPR and clinical governance obligations. The successful candidate will work across the whole stack - React and TypeScript in the browser, TypeScript services and PostgreSQL behind them - on a new clinical-records product and a live clinical transcription product, alongside a small engineering team and the Chief Technical Officer. This is a mid-level role. You should be comfortable owning a feature from requirement to production with review and support around you, rather than designing the platform on your own. Main Duties and Responsibilities Build and ship features end to end - React and TypeScript in the browser, TypeScript services and workers on the server, and the data layer beneath them. Write and review SQL, schemas and migrations for clinical and case data. Cover your work with automated tests - unit, integration and end-to-end - and keep the CI...
Outside Spy
Sep 21, 2026
Duration not stated
Senior Java Developer – London – Fintech at Adaptive Financial Consulting, London, £Contract Rate
Outside Spy London, UK
WE ARE: At Adaptive, we are a financial consulting firm that partners with capital, commodity, and digital market participants. We value differentiation through technology. Our experienced teams design and deliver complex front-office technology solutions using our proven accelerators to create long-term competitive advantage. Our clients include the world's leading investment banks, investment managers, fintechs and capital market service providers. With a global reach with offices in London, New York, Barcelona, Montreal and Manila, we have a proven track record delivering powerful, elegant and intuitive trading technology solutions. We are expanding our product capability and looking for talented individuals to help build transformational capital markets products including: Aeron - our flagship high-performance messaging infrastructure. Hydra - our developer framework for accelerating the development and delivery of trading systems. Artio - our market-leading...
Outside Spy
Sep 21, 2026
6 Months or more
Junior Python Developer - Outside IR35 at Square One Resources, London, 6 Months, to £175 per day
£75 - £175 per day
Outside Spy London, UK
J ob Title: Python Engineer Location: UK Based - Fully Remote Salary/Rate: Up to £175 Daily Outside IR35 Start Date: In the next two weeks Job Type: Initial 6 month contact Company Introduction We have an exciting opportunity now available with one of our sector-leading consultancy clients! They are currently looking for a Python Engineer to join their team for an initial six-month contract. Job Summary: We are seeking a dynamic and passionate Python Developer to join our innovative software development team. In this role, you will be instrumental in designing, developing, and maintaining scalable applications that drive our core business operations. Your expertise will help shape the future of our technology solutions, ensuring high performance, security, and seamless integration with various platforms and services. This position offers an exciting opportunity to work with cutting-edge tools and technologies in a fast-paced environment committed to excellence...
Outside Spy
Sep 21, 2026
6 Months or more
Blue Yonder WMS Developer/Architect - Outside IR35 - Hybrid - £650 p at Exalto Consulting, London, 6 Months, £650 per day
£650 per day
Outside Spy London, UK
My client, a Global Supply Chain organisation are looking to recruit an experienced Blue Yonder WMS Developer for an intial 6 month contract to start ASAP. Key Responsibilities: Develop, configure, and deploy Blue Yonder WMS customisations and integrations in line with business requirements and best practices. Code quality, documentation, and solution design. Perform enhancements, upgrades, and system configuration within the Blue Yonder MOCA architecture. Design and implement WMS reports, interfaces, and data extracts using SQL and related tools. Conduct thorough unit testing to ensure solution quality and performance. Participate in system upgrades, patches, and version migrations, ensuring minimal disruption to business operations. Produce and maintain comprehensive technical documentation, including functional specifications, configuration records, and operational procedures. Provide second and third-line support for Blue Yonder WMS incidents and change...
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