Full Stack Engineer - UK (Remote) - £60k-£70kI'm working with a UK-based organisation that is building a secure, offline-capable property visiting platform using modern Microsoft technologies. They are looking for a Senior Full Stack Engineer to play a key role in delivering the first iteration of a strategic cloud platform that will expand under a 'fail fast' innovation model.This is an excellent opportunity for a senior engineer who thrives in structured, security-focused environments and enjoys building clean, scalable systems from the ground up.The OpportunityYou'll join a senior engineering team delivering a greenfield platform consisting of a .NET MAUI mobile application (iOS & Android), an Angular 21 web application, and Azure-hosted backend services built using clean architecture principles.Reporting into technical leadership, you'll contribute to architectural decisions while remaining hands-on across backend, frontend, cloud infrastructure, and mobile. This is a role for someone who thinks architecturally but delivers incrementally, maintaining high standards for quality, security, and performance.The initial programme will establish the engineering standards and cloud foundation that future products will be built upon.Key ResponsibilitiesYou will be responsible for:Writing production-quality, well-tested, secure code across backend, web, and mobileDesigning and building RESTful APIs using clean architecture principlesDeveloping offline-first mobile functionality using .NET MAUIBuilding secure Angular 21 frontends using strict TypeScript and MSAL authenticationImplementing Infrastructure as Code using BicepDeploying and managing Azure-hosted services using enterprise DevOps practicesIntegrating Azure Entra ID authentication and role-based authorisationCollaborating closely with Product, UX (Figma), and QA teamsChallenging ambiguity and proposing simple, robust solutionsContributing to architectural documentation and decision recordsTech Stack & ExperienceCore technologies:.NET 10 / ASP.NET Core Web APIEntity Framework Core with Azure SQL.NET MAUI (iOS & Android) - offline-first designAngular 21 (strict TypeScript)DevExpress DevExtreme (v25)Microsoft Azure (App Services, Azure SQL, Blob Storage, Key Vault, Application Insights)Infrastructure as Code (Bicep)Azure Entra ID (authentication & RBAC)NUnit (backend and mobile testing)Vitest & Playwright (frontend and E2E testing)Desirable Experience:Power BI report templatingAzure Fabric / Data Lake familiarityGeospatial or mapping APIs (Google Maps preferred)iOS exposure (ARKit / LiDAR / sensor APIs)Experience in regulated or security-sensitive environmentsWhat They're Looking ForAt least 5 years' commercial software engineering experienceStrong expertise in modern .NETProven experience with modern Angular (v15+)Hands-on Azure architecture and deployment experienceExperience implementing Infrastructure as CodeExperience integrating Azure Entra IDStrong REST API design knowledgeExperience implementing CI/CD pipelinesSecurity-first mindset with strong attention to detailAbility to work independently within defined architectural standardsClear and confident communication skillsHighly desirable: experience with DevExpress / DevExtreme.Why This Role?This is a rare opportunity to shape a foundational cloud platform from day one using the latest Microsoft stack. You'll work in a disciplined, enterprise-grade engineering culture where security, performance, and quality are non-negotiable - while also contributing to a wider innovation strategy that will evolve beyond the initial product.If you're open to a confidential discussion, apply now and I'll be in touch.Oscar Associates (UK) Limited is acting as an Employment Agency in relation to this vacancy.To understand more about what we do with your data please review our privacy policy in the privacy section of the Oscar website.JBRP1_UKTJ