role requires active SC and NPPV3 clearance from day one. This is a fully remote UK based role. Key Responsibilities Design, develop, and maintain applications using C# and .NETFramework/.NET 6+ Work with XML/JSON APIs for integration and data exchange Develop and execute automated tests with MSTest Collaborate with stakeholders … to gather and analyse requirements Ensure software is secure, scalable, and maintainable Essential Skills Strong commercial experience in C# In-depth knowledge of .NETFramework and .NET 6+ Proven experience working with XML/JSON APIs Proficiency with MSTest Background in requirements gathering and analysis Highly Beneficial Skills Docker Oracle SQL Postman Swagger Desirable More ❯
Backend Developer - C# .Net Contract Length: Initial 6 months (with potential for extension) Location: London Rate: Up to 700 per day, Outside IR35 Our client, a leading Oil and Gas firm with a global presence, is seeking a skilled C#.NET Developer to join their dynamic team. The role will focus on enhancing and maintaining their bespoke LNG trading … Role Overview: The successful candidate will work closely with Project Managers, Development Leads, and Business Analysts to support the customization and development of their systems. This includes enhancing .NET-based applications and integrations, with a focus on EOS and physical commodities. Responsibilities: Develop, maintain, and optimize applications using the .NETFramework, including WinForms and … plans and deliverables. Provide support for system enhancements related to physical commodity trading, specifically within the LNG domain. Technical Skills: Proven experience in C#.NET development, specifically within the .NETFramework (experience in .NET Core is advantageous). Strong understanding of database design and development, particularly with SQL Server. Proficiency in WinForms and WCF for More ❯
Backend Developer - C# .Net Contract Length: Initial 6 months (with potential for extension) Location: London Rate: Up to 700 per day, Outside IR35 Our client, a leading Oil and Gas firm with a global presence, is seeking a skilled C#.NET Developer to join their dynamic team. The role will focus on enhancing and maintaining their bespoke LNG trading … Role Overview: The successful candidate will work closely with Project Managers, Development Leads, and Business Analysts to support the customization and development of their systems. This includes enhancing .NET-based applications and integrations, with a focus on EOS and physical commodities. Responsibilities: Develop, maintain, and optimize applications using the .NETFramework, including WinForms and … plans and deliverables. Provide support for system enhancements related to physical commodity trading, specifically within the LNG domain. Technical Skills: Proven experience in C#.NET development, specifically within the .NETFramework (experience in .NET Core is advantageous). Strong understanding of database design and development, particularly with SQL Server. Proficiency in WinForms and WCF for More ❯
lifecycle from code understanding and transformation to testing, deployment, and documentation. Key Responsibilities Design and maintain AI-powered tools to automate legacy system migrations (e.g., monoliths to microservices, .NETFramework to .NET Core). Collaborate with AI Engineers and the Head of Development to integrate LangChain or Semantic Kernel agents into migration workflows. Use … and tooling robustness. Adapt to diverse legacy stacks, including proprietary or niche technologies. Required Skills & Experience 5+ years of full-stack development experience. Strong coding skills in: C#, .NET Core & one of Python/JavaScript/TypeScript. Experience modernising or migrating legacy systems (e.g., WinForms, WebForms, classic ASP). Familiarity with AI developer toolchains (LangChain, Semantic Kernel, Devin More ❯
and RESTful APIs. Solid experience with front-end technologies (HTML, CSS, JavaScript/TypeScript). Experience with SQL databases (e.g., SQL Server, PostgreSQL) and ORM frameworks (e.g., Entity Framework). Good understanding of software engineering best practices: testing, version control (Git), CI/CD. Familiarity with cloud platforms (Azure preferred) for hosting, deployment, and services. Ability to balance More ❯
business logic and actuarial models. Key Responsibilities Lead the design and delivery of high-quality insurance-based applications and system integrations. Provide hands-on coding expertise across C#, .NETFramework/Core, MVC , and Web APIs . Collaborate with business and actuarial teams to develop and maintain Rulebook-based pricing solutions . Produce technical specifications, ensure More ❯
business logic and actuarial models. Key Responsibilities Lead the design and delivery of high-quality insurance-based applications and system integrations. Provide hands-on coding expertise across C#, .NETFramework/Core, MVC , and Web APIs . Collaborate with business and actuarial teams to develop and maintain Rulebook-based pricing solutions . Produce technical specifications, ensure More ❯
this role, you'll need to have a solid understanding of technologies, including APIs, distributed systems design, operational scaling and availability, and application integrations. Deep knowledge of the .netframework and SQL Server will be critical for success in this role. You have experience working full stack with front-end, scripting, and back-end experience. Their More ❯
Remote-first (UK) | Quarterly meet-ups | 70k DOE Were working with a fast-growing SaaS business thats investing heavily in its platform as it moves from a monolithic .NETframework into a microservices architecture. Theyve recently been acquired and are scaling fast, with fresh investment and a clear programme of work to modernise infrastructure, integrations, and … with humility and a collaborative style. Nice to have Exposure to AWS (for machine learning workloads). Experience with messaging/queues (Service Bus, RabbitMQ). Background in .NET environments. Why join? Take ownership from day one, stepping into a role where your impact will be felt immediately. Join a business on a clear growth trajectory, with fresh More ❯
Mid-Level .NET Engineer (Remote) Location: Remote Salary: Up to 60k + Benefits Our client, an established and forward-thinking tech company, is looking for a Mid-Level .NET Engineer to join their distributed engineering team. This is an exciting opportunity to work on modern, scalable solutions within a collaborative and growth-focused environment. The Role … As a .NET Engineer, youll be developing and maintaining high-quality applications and backend services using the latest .NET technologies. Youll collaborate closely with other engineers, product managers, and stakeholders to deliver clean, efficient, and maintainable code that supports business goals and enhances user experience. Key Responsibilities Build and maintain .NET Core/ASP.NET … code reviews, sprints, and agile ceremonies Collaborate with a distributed team to deliver solutions on time and to spec What Youll Need 3+ years of professional experience in .NET development Strong proficiency in C#, ASP.NET Core, Entity Framework Solid understanding of RESTful API design and software architecture principles Experience with Azure or other cloud environments preferred More ❯
.NET/REACT Engineer Nottingham (Hybrid, 2 days onsite) Were looking for a skilled .NET and React Engineer to join a collaborative development team building enterprise-scale, cloud-first applications. Youll be working with the latest Microsoft technologies in an agile environment where your ideas will directly shape the evolution of their digital platforms. What Youll … Do Design, build, and maintain scalable applications using C#, .NET Core, and React Work with a range of Azure services (App Services, Functions, Logic Apps, Service Bus, Azure DevOps pipelines) Optimise and maintain SQL Server databases for performance and reliability Contribute to system architecture, design discussions, and technical decision-making What Were Looking For Proven experience in .NET development (C#, .NET Core, ASP.NET) Familiarity with React or another modern front-end framework Exposure to Azure cloud services and CI/CD pipelines Passion for clean code, modern engineering practices, and continuous learning Whats On Offer Salary up to 65,000, depending on experience Hybrid working 2 days per week in the Nottingham More ❯
Software Engineer (.Net) SC Cleared Permanent Location: Fully remote/WFH (UK residency only) Salary: 50,000 - 55,000 (+ on-call 5K + a comprehensive range of Employee Benefits) Essential Skills: C#.Net, MVC, ASP.Net, SC Clearance We are looking to recruit an SC Cleared Software Engineer to a leading technology consultancy. This is a home based role … lifecycle Familiarity with ITIL IT Service Management processes Strong appreciation for development standards and quality procedures 2+ years' professional experience with some of the following technologies: Technical Skills: .Net MVC ASP.net WebForms Hibernate Entity Framework Web Technologies: HTML, CSS JavaScript, jQuery, Angular SQL, T-SQL, MySQL More ❯
users across 96 member businesses. The new platform is being developed as a scalable platform leveraging the latest technologies and robust frameworks. Data management is handled through entity framework which interacts with the SQL databases. REST APIs are used through the system as the methodology to interact with third party integrations which are key with the system. The … office. The role will be a hybrid one with two days a week in the office. What are we looking for: We are looking for a full stack .Net developer with at least two to three years of development experience. Technical overview: Front end Angular Back end - C# .NET core Deployment Azure DevOps pipeline Platform design … Microservices architecture Hosted on Azure Kubernetes service Data Management Entity framework interacting with SQL databases Authentication Auth0 complimented by custom roles and permissions (RBAC) within the system You will be the sole developer within the business, so we are looking for someone that is keen to have a key role in the development, documentation and how to take More ❯
teams to deliver robust, future-ready solutions. What Theyre Looking For Strong Unity development experience, including URP/HDRP pipelines, Addressables, and Job System . Skills in C# (.NET 6/8), Cesium for Unity, PostgreSQL/PostGIS, and Entity Framework Core . Familiarity with modern frontend frameworks such as React with TypeScript . Strong Agile More ❯
City of London, Greater London, UK Hybrid / WFH Options
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teams to deliver robust, future-ready solutions. What Theyre Looking For Strong Unity development experience, including URP/HDRP pipelines, Addressables, and Job System . Skills in C# (.NET 6/8), Cesium for Unity, PostgreSQL/PostGIS, and Entity Framework Core . Familiarity with modern frontend frameworks such as React with TypeScript . Strong Agile More ❯
between back and front end design. This role is primarily home-based and may occasionally require out-of-hours support. Key Responsibilities Design and develop applications using C#, .NET Core, and React. Follow and help define software development standards and best practices. Work with test-driven development, automated testing, and CI/CD pipelines. Support ongoing operations and … various development projects. Collaborate with third-party software providers throughout the development lifecycle. Provide technical guidance and mentorship to less experienced developers. Required Skills Strong experience with C#, .NET Core, Azure, and test automation. Proficiency in JavaScript and a modern front-end framework (React preferred). Familiarity with microservices, containerization, and site reliability engineering. Solid understanding More ❯
Role: .NET Developer Clearances Required: NPPV3 and SC Status: Contract Duration: 6 Months Start Date: Mid-November 2025 iO Associates are partnered with a Public Sector focused consultancy on their search for multiple .NET Developers to join them on a Contract basis. *Note, you must have BOTH active SC and NPPV3 to be considered for these … roles! Essential Skills: C#, core programming language NET Framework and .NET 6+ ASP.NET XML/JSON APIs MSTest If you're interested, please respond with your most updated CV as I will be calling through applicants in order of receipt. Role: .NET Developer Clearances Required: NPPV3 and SC Status: Contract Duration: 6 Months Start More ❯