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# Senior Developer

- **Company:** Stealth B2B SaaS Startup
- **Location:** London, UK
- **Experience:** Expert
- **Salary:** £60,000.0 - £100,000.0
- **Contract:** Permanent contract
- **Skills:** ASP.NET, JavaScript (Programming Language), .NET Framework, Microsoft Windows, Artificial Intelligence, Computing Platforms, Unit Testing, Microsoft Azure, C Sharp (Programming Language), Cloud Computing, Concurrent Computing, Continuous Integration, DevOps, Entity Framework, Design of User Interfaces, Windows Presentation Foundation, Microsoft SQL Server, Model View ViewModel, OAuth, OpenID, Software Architecture, Role-Based Access Control, Openid Connect, Azure DevOps Pipelines, Standard Sql, Software Systems, Web Application Frameworks, Windows Desktop, Multithreading, ReactJS, Delivery Pipeline, Vue.js, AngularJS, Restful APIs
- **Published:** August 15, 2026
- **Apply:** https://www.adzuna.co.uk/jobs/details/5843030531

## About the Role

* We require strong experience with C# and ASP.NET Core (.NET 8/9/10).
 * We require experience with WPF and MVVM.
 * We require experience building RESTful APIs.
 * We require experience with SQL Server and Entity Framework Core.
 * We require experience with OpenID Connect, OAuth 2.0, and role-based access control (RBAC).
 * We require experience with multithreading and concurrent programming.
 * We require experience with unit and integration testing.
 * We require strong understanding of system design and software architecture.
 * We require experience with Azure DevOps CI/CD pipelines.
 * We require experience with Azure or similar cloud platforms.
 * We require experience building secure applications.
 * We require a good understanding of cybersecurity principles.
 * JavaScript and experience with modern frameworks such as React, Vue, or Angular are nice to have.
 * An appreciation for user experience and usability is nice to have.
 * Experience using AI-assisted development tools and designing AI-powered development workflows is nice to have.

## Description

* We maintain and enhance our existing software platforms.
 * We work closely with our Head of Development to design and build our next-generation products.
 * We contribute to architectural discussions and technical decision-making.
 * We research, evaluate, and introduce new technologies where appropriate.
 * We produce and maintain technical documentation.
 * We share knowledge and support other members of our team.
 * We continuously improve our products, processes, and engineering practices.

Technologies:

 * AI
 * ASP.NET
 * Angular
 * Azure
 * C#
 * CI/CD
 * Cloud
 * DevOps
 * Support
 * JavaScript
 * MVVM
 * OAuth
 * OpenID
 * RBAC
 * React
 * SQL
 * Vue
 * WPF
 * Web
 * Windows
 * UX UI Design

More:

We are SAL, a small, experienced engineering team modernising our software solutions and building the next generation of our platform. We work on both a Windows desktop application and a web-based financial modelling platform, and we value collaboration, practical solutions, continuous improvement, and open discussion. This role offers the opportunity to make a meaningful impact on architecture, technical direction, and engineering standards while working closely with colleagues across the business in an agile but pragmatic environment.


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