Software Engineer (.Net/ C#)

Software Developer Enterprise Migration Platform Position Overview

Team: Migration Group

Location: Remote or Office-based.

UK Cardiff

Employment Type: Full-time, Permanent

Experience Level: Mid-level to Senior (3+ years)

Key Responsibilities

• Maintain and enhance legacy migration platform codebase
• Implement customer-specific customizations and connector modifications
• Develop and maintain connectors for enterprise systems (Exchange, PST, NSF, SourceOne, Enterprise Vault)
• Participate in code reviews and collaborate through GitLab merge requests
• Document code changes and maintain technical documentation
• Maintain and improve CI/CD pipelines using TeamCity
• Write unit tests and support QA testing
• Contribute to next-generation platform architecture and development

Requirements Must-Have

• 3+ years professional experience with C# and .NET Framework. Comfortable with OOP, LINQ, async/await, dependency injection.
• Experience with .NET testing frameworks (xUnit, NUnit, or MSTest). Understanding of unit testing principles, test-driven development, mocking, and writing maintainable test code.
• Basic understanding of web services and communication technologies, including APIs, HTTP, and sockets
• Demonstrated ability to debug complex issues, read and understand existing codebases, implement solutions independently.
• Proficiency with Git workflows (branching, merging, pull requests, conflict resolution). Experience with GitLab or GitHub.
• Working knowledge of SQL for querying and data manipulation. Experience with SQL Server, PostgreSQL, or similar relational databases.
• Experience with ORMs such as Entity Framework, ORMLite, or Dapper for data access.
• Experience developing on Windows platform using Visual Studio or similar IDEs.
• Strong written and verbal communication. Ability to explain technical concepts clearly and document work effectively.
• Ability to work independently with minimal supervision, manage own time effectively.
• Proven ability to work effectively in small team environments and participate constructively in code reviews.

Nice-to-Have

• Email/Archive Systems: Exchange Server, Office 365, PST files, Enterprise Vault, Commvault, SourceOne, IBM Tivoli
• Data Migration: ETL, data warehousing, replication software, batch processing, data transformation, legacy data extraction, binary/structured file parsing
• Additional Languages: C++, VB.NET, Python, PowerShell
• Testing/Quality Tools: SonarQube, SonarCloud, dotCover, Cucumber, Selenium, SpecFlow, NSubstitute
• DevOps: TeamCity, Docker
• UI Frameworks: Avalonia, Blazor, Angular, WPF, WinForms
• Logging/Profiling: NLog, Serilog, dotTrace, dotMemory
• Other: REST/SOAP API integration, Agile/Scrum experience