7 senior net developer jobs found in London

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...

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...

Role: Android Developer Location: London (Hybrid 2-3 days a week onsite) Status: Outside IR35 Rate: Neg Duration: Initial 3 months (Extensions due) We are looking for an experienced Android Developer to design, develop and maintain high-quality native Android applications, working closely with product, design, Back End and engineering teams. Key Responsibilities Develop and maintain native Android applications using Kotlin. Build modern interfaces using Jetpack Compose. Integrate applications with REST APIs and Back End services. Write clean, maintainable and well-tested code. Troubleshoot performance, stability and application issues. Participate in code reviews and Agile delivery. Support CI/CD and application releases. Essential Experience Strong commercial Android development experience. Excellent Kotlin and Android SDK knowledge. Jetpack Compose. MVVM/Clean Architecture....

Here at Anson McCade we are in search of multiple Software Engineers to join our client within public sector. Experience: Azure/.NET developer (C#, ASP.NET Core) Azure Functions, Azure Service Bus, NO-SQL DB (eg Cosmos) API management (eg REST, OPenAPI/Swagger) Identify management (APIM, EntraID, OAuth SharePoint integration PCF development (typescript, PCF, JSON) Familiarity with MS Power Platform integrations (Dataverse API) Details: Outside IR35 Remote 6 months If this role is of interest, please apply.

Contract - £650 / Day - Outside IR35 - 12 months TL;DR Role: Data Governance & Master Data Lead — standing up an enterprise data governance function from scratch Where you'll work: Embedded on-site with a global renewable energy developer and operator Location: London — on-site, five days a week Type: Permanent, full-time Domain: Utilities, energy or another asset-heavy industry — essential, not a nice-to-have Platforms: SAP MDG, Informatica MDM, Collibra or Microsoft Purview; SAP S/4HANA environment Line Management: Lead a Master Data team of internal staff, outsourced specialists and consultants Visa Sponsorship: Not available — you must already have the right to work in the UK Flexibility: This one is genuinely full-time and on-site. If that does not work for you, we have other roles that will Diversity & Inclusion: We want a broad mix of people and perspectives Who We Are Hypercube is a data-and-AI specialist focused on...