Senior .NET Developer

About the role

Trinetix is seeking a Senior .NET Developer to design, build, and maintain secure, scalable APIs. You will work with established on‑prem systems while helping the company transition to Azure cloud services and explore machine‑learning integration.

Key responsibilities

• Design, develop, and maintain RESTful APIs using .NET C# and ASP.NET Core.
• Create efficient data models with Entity Framework Core and write optimized SQL queries for SQL Server.
• Support cloud migration by developing solutions on Azure App Services, Azure Functions, and Azure SQL.
• Collaborate with stakeholders to integrate machine‑learning models via Azure ML or REST APIs.
• Write clean, testable, and well‑documented code; develop unit tests using xUnit, NUnit or MSTest.
• Participate in CI/CD pipelines using GitHub Actions and follow DevOps best practices.
• Diagnose and resolve performance issues, bugs, and bottlenecks.
• Work closely with cross‑functional teams to deliver secure, high‑quality solutions.

Required profile

• 4+ years of professional .NET C# development experience.
• Strong command of SQL and ability to write complex, optimized queries.
• Proven experience building RESTful APIs with ASP.NET or ASP.NET Core.
• Comfortable working independently and within a team.

Required skills

• .NET C#
• Entity Framework Core
• SQL
• ASP.NET / ASP.NET Core
• Git
• Azure App Services
• Azure SQL
• Azure Functions
• Azure Machine Learning
• OData
• Microservices
• Distributed systems
• xUnit / NUnit / MSTest
• GitHub Actions
• CI/CD
• DevOps