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# Senior Product Engineer (.NET/C#/Claude Code)

- **Company:** ION
- **Location:** Newcastle upon Tyne, UK
- **Experience:** Expert
- **Salary:** £50,000.0 - £60,000.0
- **Contract:** Permanent contract
- **Skills:** ASP.NET, JavaScript (Programming Language), .NET Framework, Application Programming Interfaces (APIs), Artificial Intelligence, Microsoft Azure, C Sharp (Programming Language), Cloud Computing, Code Review, Collaborative Software, Relational Databases, Cursor (Graphical User Interface Elements), Web Development, Github, Machine Learning, Software Architecture, Next.js, Software Deployment, Software Engineering, Systems Integration, TypeScript, Web Application Frameworks, Blazor, Backend, Git, Front End Software Development, Code Restructuring
- **Published:** September 16, 2026
- **Apply:** https://www.adzuna.co.uk/jobs/details/5884535333

## About the Role

* Several years of professional software development experience
 * Comfortable independently delivering production software
 * Experience with C# and .NET, or strong experience in another modern backend ecosystem
 * Experience with TypeScript and modern JavaScript
 * Experience with Next.js or similar modern frontend frameworks
 * Experience with modern web application development
 * Experience with relational databases and data modelling
 * Experience with APIs and integrations
 * Experience testing and debugging production applications
 * Experience with Git and collaborative software development
 * Experience with cloud infrastructure and application deployment
 * Experience reviewing code and making architectural decisions

## Description

* Design, build and ship financial technology products
 * Work across the development lifecycle from understanding the problem through to getting software into production
 * Explore existing systems and codebases to understand product problems
 * Turn product requirements into implementation plans
 * Use AI to accelerate implementation, review output, test it and ship it responsibly
 * Write, refactor and review code
 * Generate tests and investigate bugs
 * Research unfamiliar technologies and produce documentation
 * Automate repetitive engineering work
 * Take ownership of problems and contribute to better software design and architecture

Technologies:

 * AI
 * Backend
 * C#
 * Cloud
 * Frontend
 * Git
 * JavaScript
 * TypeScript
 * Web
 * ASP.NET
 * Azure
 * Blazor
 * Claude Code
 * Copilot
 * Cursor
 * GitHub
 * LESS
 * Machine Learning
 * Sage
 * Security


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