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# Senior Software Engineer

- **Company:** OneAdvanced
- **Location:** Birmingham, UK
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Testing (Software), Clean Code Principles, .NET Framework, LTE (Telecommunication), Microsoft Windows, Application Programming Interfaces (APIs), Artificial Intelligence, Component-Based Software Engineering, Automation of Tests, Unit Testing, C Sharp (Programming Language), C++ (Programming Language), Code Coverage, Code Generation, Software Quality, Code Review, Data Integrity, Data Security, Relational Databases, Programming Tools, Integrated Development Environments, PostgreSQL, Microsoft Visual Studio, Visual Basic .NET (Programming Language), MSBuild, Perforce, Ranorex, Software Engineering, SQL Databases, Windows Desktop, Windows Forms, Reliability of Systems, AI Coding Agents, Agentic-AI, Git, Vba Programming Language, Atlassian Tools, Codebase
- **Published:** October 22, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=eb36d76678df39dc

## About the Role

* Commercial experience developing complex software using MS C++ and C#/.NET.
 * Experience with Windows desktop applications, ideally Windows Forms, and a strong understanding of maintaining and evolving established systems.
 * Experience working with large codebases, diagnosing complex issues and understanding dependencies across application components.
 * Solid SQL and relational database development skills; PostgreSQL experience is preferred.
 * Experience using Visual Studio and MSBuild in a commercial development environment.
 * An understanding of COM, OLE and interoperability concepts.
 * An understanding of Windows APIs.
 * A commitment to clean, maintainable code, appropriate testing and high engineering standards.

Highly Desirable:

 * Experience with COM-based systems, VB6 or VB.NET and legacy modernisation.
 * Practical experience with agentic AI development tools, AI coding assistants or AI-enabled testing.
 * Curiosity about AI-assisted software engineering and the ability to critically assess AI-generated code.
 * Experience in healthcare, regulated or safety-critical software environments.
 * Knowledge of NHS integrations, clinical systems or SNOMED CT.
 * Experience with unit testing frameworks and Ranorex or comparable testing frameworks.
 * Experience navigating large solutions with many interconnected projects.
 * Familiarity with Git or Perforce, Jira and Confluence.

## Description

* Develop, maintain and enhance Vision across a complex codebase spanning C++, COM and C#/.NET.
 * Diagnose challenging issues and improve system reliability, performance, maintainability and test coverage.
 * Support the modernisation of legacy C++ and VB6 functionality towards modern .NET solutions.
 * Work with SQL databases, COM interop and established data access technologies.
 * Contribute to new web-based workflows through our IQHealth platform, improving experiences for GP practices and clinical users.
 * Use agentic AI development and testing tools to accelerate engineering workflows, explore solutions and improve software quality.
 * Review and validate AI-generated code, applying sound engineering judgement to ensure changes are secure, reliable and appropriate for a clinical environment.
 * Develop and maintain integrations with NHS systems and relevant healthcare standards.
 * Contribute to technical design, code reviews and automated testing, collaborating with Product and QA teams to deliver effective solutions., * Deliver high-quality software that meets requirements and minimises post-release defects.
 * Improve system reliability, maintainability and automated test coverage.
 * Contribute to modernisation initiatives that support Vision's long-term evolution.
 * Use AI-enabled development and testing to improve productivity without compromising quality or safety.
 * Meet applicable NHS assurance and information governance requirements, maintaining a strong focus on clinical safety and data integrity.
 * Communicate technical decisions clearly and collaborate effectively across engineering, product and QA.
 * Contribute to thoughtful technical design, code reviews and continuous improvement.

Key Relationships

 * Engineering teams and technical leadership.
 * Product Managers and Product Owners.
 * QA and software testing teams.
 * External stakeholders, including NHS authorities and health boards.