Job Description
.NET Contractor (Mid Ulster) Manufacturing Location Mid Ulster (on-site 4 days/week during onboarding, moving to 3 days/week thereafter) Contract Day-rate contract, rate negotiable, immediate start available, IR35 status to be confirmed via SDS About the role Our client, a Mid Ulster manufacturing business, is rewriting a legacy platform onto modern .NET. They need an experienced contractor to add both expertise and capacity, helping design, build, and ship production-ready services while transferring knowledge to the in-house team. What you'll do * Lead and contribute to the rewrite from .NET Framework to modern .NET (e.g.
.NET 8) Build secure, performant APIs and services with ASP.NET Core and Entity Framework Core Refactor legacy components, reduce tech debt, and improve reliability and observability Design data access patterns for SQL Server; tune queries, indexing, and migrations Implement CI/CD pipelines (Azure DevOps/GitHub Actions) and deployment automation Introduce testing discipline (unit/integration), code reviews, and coding standards Collaborate with manufacturing stakeholders to align solutions with shop-floor workflows Document architecture, decisions, and run-books; mentor permanent engineers Essential experience Strong commercial C#/.NET Core/.NET 6-8 and ASP.NET Core Web API Deep experience migrating legacy .NET Framework ...