26 senior net developer jobs found

Senior .net developer - £425 outside IR35 - 100% remote - 3 months initially  Exalto consulting are currently recruiting for a senior contract .net developer, this is outside IR35 paying £425 per day, initially 3 months. 100% remote working  Essential skills for the role: Backend (.NET / C#) C# and .NET (currently .NET 10)  ASP.NET Core  ASP.NET Core Razor Pages   Entity Framework Core  SQL Server   ASP.NET Core Identity  Clean Architecture & CQRS  Front end (server-rendered) HTML, CSS and JavaScript  jQuery  Bootstrap / AdminLTE  DataTables, Chart.js and related jQuery plugins Ways of working Git  Azure DevOps  Azure familiarity — the app runs on Azure SQL Database and Azure App Service/Functions. If you have the above experience and are looking for a new contract role please send your CV for immediate consideration as our client are looking to hire ASAP  Senior .net developer - £425 outside IR35 - 100% remote - 3 months

Senior .net developer - £425 outside IR35 - 100% remote - 3 months initially Exalto consulting are currently recruiting for a senior contract .net developer, this is outside IR35 paying £425 per day, initially 3 months. 100% remote working Essential skills for the role: Backend (.NET / C#) C# and .NET (currently .NET 10) ASP.NET Core ASP.NET Core Razor Pages Entity Framework Core SQL Server ASP.NET Core Identity Clean Architecture & CQRS Front end (server-rendered) HTML, CSS and JavaScript jQuery Bootstrap / AdminLTE DataTables, Chart.js and related jQuery plugins Ways of working Git Azure DevOps Azure familiarity — the app runs on Azure SQL Database and Azure App Service/Functions. If you have the above experience and are looking for a new contract role please send your CV for immediate consideration as our client are looking to hire ASAP Senior .net developer - £425 outside IR35 -...

Senior .net developer - £425 outside IR35 - 100% remote - 3 months initially Exalto consulting are currently recruiting for a senior contract .net developer, this is outside IR35 paying £425 per day, initially 3 months. 100% remote working Essential skills for the role: Backend (.NET/C#) C# and .NET (currently .NET 10) ASP.NET Core ASP.NET Core Razor Pages Entity Framework Core SQL Server ASP.NET Core Identity Clean Architecture & CQRS Front End (server-rendered) HTML, CSS and JavaScript jQuery Bootstrap/AdminLTE DataTables, Chart.js and related jQuery plugins Ways of working Git Azure DevOps Azure familiarity - the app runs on Azure SQL Database and Azure App Service/Functions. If you have the above experience and are looking for a new contract role please send your CV for immediate consideration as our client are looking to hire ASAP Senior .net developer - £425 outside IR35 -...

Senior .NET Developer - Application Support & Agile Fully Remote, Outside IR35 6 month contract We are looking for an experienced .NET Developer with strong application maintenance and support experience to join a development team responsible for a business-critical Legacy application. The role will combine hands-on development, application support and Agile delivery, with responsibility for picking up and managing development tickets, resolving live issues, delivering incremental enhancements and supporting sprint planning. The application is primarily built using C#/.NET Framework , with an Angular Front End . Key Responsibilities Maintain, support and enhance a Legacy C#/.NET Framework application. Diagnose and resolve application defects, performance issues and live service incidents. Investigate problems through to root cause and implement robust technical fixes. Deliver minor enhancements and incremental changes in response to business...

Senior C# Engineer – .NET 9/10, AWS Lambda, SQS, SNS – OUTSIDE IR35 £700–£800 per day • Outside IR35 ? 100% Remote • 9 month rolling contract Takeaway: Contribute to the architecture and build of a major greenfield B2B SaaS platform as a deeply senior, hands-on C# engineer, with heavy emphasis on deep .NET engineering , high-performance distributed systems , and real-world AWS serverless delivery . You’ll also have the opportunity to develop hands-on skills with Claude Code , one of the most advanced AI-assisted development tools in the industry. Role Overview: You’ll operate as the technical spearhead for a greenfield product build, reporting to the Director of Engineering. Expect deep backend engineering, distributed system design, and high-quality serverless delivery, plus the chance to adopt modern AI-assisted development practices as part of your workflow. What You’ll Bring: Senior/Staff-level backend mastery in C# and .NET 9/10 , with...

Senior Full Stack .NET Developer - Contract - Brighton/Hybrid We're currently working with an important tech driven client based in Brighton who are looking to bring in a Senior Full Stack .NET Developer on an initial 6-month contract, with strong potential for extension. This is an opportunity for a senior-level contractor who is comfortable working autonomously and taking ownership of a fairly isolated live project. The system is already in production and performing well overall, however there are ongoing Legacy data quality issues which require investigation, fixes, and long-tail support. The original development team are moving onto another project, so they're looking for someone who can step in quickly, understand the platform, and manage the ongoing enhancements and data remediation work. Key Skills Required Strong commercial experience with C#/.NET Core Current solution built in .NET 8 (moving to .NET 10) Strong SQL skills, including data analysis and...

Senior Full Stack .NET Developer - Contract - Brighton/Hybrid We 're currently working with an important tech driven client based in Brighton who are looking to bring in a Senior Full Stack .NET Developer on an initial 6-month contract, with strong potential for extension. This is an opportunity for a senior-level contractor who is comfortable working autonomously and taking ownership of a fairly isolated live project. The system is already in production and performing well overall, however there are ongoing Legacy data quality issues which require investigation, fixes, and long-tail support. The original development team are moving onto another project, so they 're looking for someone who can step in quickly, understand the platform, and manage the ongoing enhancements and data remediation work. Key Skills Required Strong commercial experience with C#/.NET Core Current solution built in .NET 8 (moving to .NET 10) Strong SQL skills, including data...

Exalto consulting are currently recruiting for a senior contract .net developer, this is outside IR35 paying £425 per day, initially 3 months. 100% remote working Essential skills for the role: Backend (.NET / C#) C# and .NET (currently .NET 10) ASP.NET Core ASP.NET Core Razor Pages Entity Framework Core SQL Server ASP.NET Core Identity Clean Architecture & CQRS Front end (server-rendered) HTML, CSS and JavaScript jQuery Bootstrap / AdminLTE DataTables, Chart.js and related jQuery plugins Ways of working Git Azure DevOps Azure familiarity — the app runs on Azure SQL Database and Azure App Service/Functions. If you have the above experience and are looking for a new contract role please send your CV for immediate consideration as our client are looking to hire ASAP Senior .net developer - £425 outside IR35 - 100% remote - 3 months

Go/TypeScript Developer Manchester | Hybrid Outside IR35 £450-£475pd 6 months We're hiring a Senior Software Engineer to join a growing SaaS/FinTech technology business in Manchester. This is an opportunity to work on a modern, cloud-first platform that sits at the heart of complex B2B customer operations. You'll join a collaborative engineering team building scalable workflow and automation technology, while helping evolve established systems into the next generation of cloud-native products. We're looking for an experienced engineer who enjoys solving complex problems, improving how software is built and operated, and using modern engineering practices and tooling to deliver better products faster. The Role As a Senior Software Engineer, you'll design, build and maintain scalable B2B SaaS solutions, with a particular focus on workflow, automation and cloud-native engineering. You'll work across the software life cycle, from technical design and API development through...

CRM DEVELOPER | SC CLEARANCE | REMOTE | £600 PER DAY | OUTSIDE IR35 My client is seeking an experienced SC Cleared CRM Developer to support a major Dynamics 365 CRM transformation programme. Working as part of a collaborative digital team, you will be responsible for developing and customising Dynamics 365 solutions, building C# plugins, creating JavaScript-based customisations, and integrating CRM with external systems. You will also play a key role in the migration from Dynamics CRM 2016 to Dynamics 365. Key Skills Required Microsoft Dynamics 365 CRM C#/.NET Development JavaScript (including Web API) Plugin Development CRM Workflows & Customisations Power Platform (Power Apps & Power Automate) SQL Server & FetchXML Dynamics 365 Integrations and API Development Contract Details £600 per day Outside IR35 3-month rolling contract Remote working Occasional travel to Wales if required Active SC Clearance required This role would suit a senior...

CRM DEVELOPER | SC CLEARANCE | REMOTE | £600 PER DAY | OUTSIDE IR35 My client is seeking an experienced SC Cleared CRM Developer to support a major Dynamics 365 CRM transformation programme. Working as part of a collaborative digital team, you will be responsible for developing and customising Dynamics 365 solutions, building C# plugins, creating JavaScript-based customisations, and integrating CRM with external systems. You will also play a key role in the migration from Dynamics CRM 2016 to Dynamics 365. Key Skills Required Microsoft Dynamics 365 CRM C#/.NET Development JavaScript (including Web API) Plugin Development CRM Workflows & Customisations Power Platform (Power Apps & Power Automate) SQL Server & FetchXML Dynamics 365 Integrations and API Development Contract Details £600 per day Outside IR35 3-month rolling contract Remote working Occasional travel to Wales if required Active SC...

Senior Full Stack Developer (React/C# .NET) Contract: Initial 3-Month Engagement (Long-Term Programme) IR35 Status: Outside IR35 Location: Hybrid Working - Approximately 1 day per week in Birmingham (flexible based on project requirements) Rate: £500 per day Outside IR35 Overview We are seeking experienced Senior Full Stack Developers to join a major business transformation programme focused on modernising platforms, data capabilities, and core business processes. This is an opportunity to play a key role in the design, development, and delivery of enterprise-scale solutions, working across both Front End and Back End technologies while contributing to data migration, integration, and technical design activities. The successful candidates will be strong engineers with deep expertise in React and C#/.NET , capable of operating across the full technology stack and collaborating closely with Product Owners, Business Analysts, Architects, and Testing teams...

Senior Full Stack Developer (React / C# .NET) Contract: Initial 3-Month Engagement (Long-Term Programme) IR35 Status: Outside IR35 Location: Hybrid Working - Approximately 1 day per week in Birmingham (flexible based on project requirements) Rate: £500 per day Outside IR35 Overview We are seeking experienced Senior Full Stack Developers to join a major business transformation programme focused on modernising platforms, data capabilities, and core business processes. This is an opportunity to play a key role in the design, development, and delivery of enterprise-scale solutions, working across both front-end and back-end technologies while contributing to data migration, integration, and technical design activities. The successful candidates will be strong engineers with deep expertise in React and C#/.NET , capable of operating across the full technology stack and collaborating closely with Product Owners, Business Analysts, Architects, and Testing teams...

Senior Full Stack Developer (React / C# .NET) Contract: Initial 3-Month Engagement (Long-Term Programme) IR35 Status: Outside IR35 Location: Hybrid Working - Approximately 1 day per week in Birmingham (flexible based on project requirements) Rate: £500 per day Outside IR35 Overview We are seeking experienced Senior Full Stack Developers to join a major business transformation programme focused on modernising platforms, data capabilities, and core business processes. This is an opportunity to play a key role in the design, development, and delivery of enterprise-scale solutions, working across both front-end and back-end technologies while contributing to data migration, integration, and technical design activities. The successful candidates will be strong engineers with deep expertise in React and C#/.NET, capable of operating across the full technology stack and collaborating closely with Product Owners, Business Analysts, Architects, and Testing teams within an Agile...

Senior C# Developer – .NET 9/10, AWS Lambda, SQS, SNS – OUTSIDE IR35   £700–£800 per day • Outside IR35 ● 100% Remote • 9 month rolling contract   Takeaway:   Contribute to the architecture and build of a major greenfield B2B SaaS platform as a deeply senior, hands‑on C# engineer, with heavy emphasis on deep .NET engineering , high‑performance distributed systems , and real‑world AWS serverless delivery . You’ll also have the opportunity to develop hands‑on skills with Claude Code , one of the most advanced AI‑assisted development tools in the industry.   Role Overview:   You’ll operate as the technical spearhead for a greenfield product build, reporting to the Director of Engineering. Expect deep backend engineering, distributed system design, and high‑quality serverless delivery, plus the chance to adopt modern AI‑assisted development practices as part of your...

Senior C# Engineer - .NET 9/10, AWS Lambda, SQS, SNS - OUTSIDE IR35 £700-£800 per day Outside IR35 - 100% Remote 11-month rolling contract Takeaway: Contribute to the architecture and build of a major greenfield B2B SaaS platform as a deeply senior, hands-on C# engineer, with heavy emphasis on deep .NET engineering , high-performance distributed systems , and real-world AWS serverless delivery . You'll also have the opportunity to develop hands-on skills with Claude Code , one of the most advanced AI-assisted development tools in the industry. Role Overview: You'll operate as the technical spearhead for a greenfield product build, reporting to the Director of Engineering. Expect deep Back End engineering, distributed system design, and high-quality serverless delivery, plus the chance to adopt modern AI-assisted development practices as part of your workflow. What You'll Bring: Senior/Staff-level Back End mastery in C# and .NET 9/10 , with the ability...

Principal Software Engineer – Testing Architecture & Engineering Quality 📍 London (1 day/week) | 💰 £750/day Outside IR35 (Flexible) | 📅 12-Month Initial Contract Shape the Future of Engineering Quality at a Leading Investment Bank   A leading investment bank is looking for an exceptional Principal Software Engineer to define and build the future testing architecture across its strategic Global Markets Front Office trading platform.   This is a highly technical Principal Software Engineering position - not a QA, Test Analyst or traditional SDET role.   The successful candidate will join a team with an exceptionally high technical bar. We're looking for someone who thinks like an architect, writes production-quality code, and enjoys solving complex engineering problems through frameworks, tooling and platform design rather than feature development alone.   You'll define the engineering foundations that...

Power Platform Developer | Contract | Outside IR35 | Fully Remote | £400/day Build the system that replaces the tools everyone's stopped trusting. A fast-growing SaaS/Fintech scale-up — backed by the likes of Google and ARM — is retiring a de-adopted vendor CLM and two legacy tools in favour of an internally built Contract Lifecycle Management system, running natively on their existing Microsoft 365 estate. The spec is written. The scope is real. This isn't a discovery project — it's a build. The Build 8 MS Dataverse tables with a defined state machine A model-driven app for Legal and Contracts Operations Power Automate flows across generation, capture, approvals and filing Teams approval cards DocuSign eSignature integration Salesforce launch/write-back A Power BI reporting pack What They Need From You Someone who can own delivery end-to-end against a written spec — flagging design improvements...

SENIOR BUSINESS ANALYST (Retail/Luxury) [Product, Engineering, UX and more...] £450-£500 pd Outside IR35 12 months contract Hybrid, London Z1 Role Objective The Business Analyst will support the engagement team by translating business needs into clear, actionable requirements that guide strategic improvements to the client's website and pages. This role partners closely with stakeholders, UX, Design, Product, Engineering and more, to understand processes, identify challenges, and uncover opportunities for value creation. Through data analysis, requirements documentation, and cross-functional collaboration, the Business Analyst works with the PO to ensure solutions are aligned with business goals and positioned to deliver measurable impact. Scope of Work Requirements & Analysis Conduct interviews, workshops, and surveys with stakeholders to capture functional and non-functional requirements. Analyse business and user needs, translating these into clear,...

Capacity/Demand Manager +12 months + +On site in Hampshire/Corsham +DV cleared role - current active clearance is essential +Sole British national only - due to nature of the project +Outside IR35 We're seeking an experienced DV Cleared Demand & Capacity Manager to support the delivery of critical Defence services within a secure MOD environment. This is an excellent opportunity for someone with a strong background in Service Management who also has a solid understanding of technical infrastructure . You'll play a key role in ensuring demand is effectively forecast, prioritised, and aligned with available resources and service capability across a complex, business-critical environment. Working from either Hampshire or Corsham, you'll collaborate with technical teams, delivery managers, service owners, and Defence stakeholders to ensure services remain resilient, scalable, and aligned with operational priorities. The Role As Demand & Capacity Manager, you...