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Senior .Net Developer

Trinetix · Poland

🏠 Remote📅 2 Jun 2026

Job Description

Senior .NET Developer

Company: Trinetix Location: Poland Industry: Technology

Trinetix is seeking a skilled and passionate Senior .NET C# Developer to join our dynamic team. If you are enthusiastic about building secure, scalable APIs, contributing to cloud migration efforts, and exploring machine learning integrations, this is an excellent opportunity to make a significant impact.

About the Role

This role focuses on designing, developing, and maintaining robust .NET C# applications, with a strong emphasis on API development and database interaction. You will play a key part in our ongoing shift towards cloud technologies and have the chance to work with cutting-edge integrations.

Key Responsibilities

  • API Development: Design, build, and maintain RESTful APIs using .NET C#, ensuring high performance, reliability, and security.
  • Data Management: Develop efficient data models with Entity Framework (preferably EF Core) and write optimized SQL queries for relational databases.
  • Cloud Transition: Contribute to new development initiatives leveraging Azure services as we migrate from on-premises infrastructure.
  • Machine Learning Integration: Collaborate with stakeholders to integrate machine learning models via RESTful APIs or Azure ML services.
  • Code Quality: Write clean, maintainable, testable, and well-documented code following best practices.
  • Collaboration: Work effectively with fellow developers and business partners to deliver secure and scalable solutions.
  • CI/CD: Support continuous integration and delivery processes, potentially using tools like GitHub Actions.
  • Troubleshooting: Investigate and resolve performance issues, bugs, and bottlenecks in existing systems.

Requirements

  • A minimum of 5 years of professional experience in .NET C# development.
  • Proficiency with Entity Framework (preferably EF Core).
  • Strong command of SQL, including complex query writing and optimization.
  • Proven experience building RESTful APIs with ASP.NET or ASP.NET Core.
  • Familiarity with version control systems, particularly Git.
  • Solid problem-solving and debugging skills.
  • Ability to communicate effectively and work both independently and as part of a team.

Nice-to-Haves

  • Exposure to Azure services such as App Services, Azure SQL, and Azure Functions.
  • Basic understanding of integrating machine learning models via APIs or Azure ML.
  • Familiarity with OData, microservices, and distributed systems concepts.
  • Experience writing unit tests (e.g., xUnit, NUnit, MSTest).
  • Knowledge of CI/CD practices, especially using GitHub Actions.
  • Interest or experience in DevOps practices and automation.

About Trinetix

Established in 2011, Trinetix is a dynamic tech service provider supporting enterprise clients globally. Headquartered in Nashville, Tennessee, we have a diverse team of over 1,000 professionals with delivery centers across Europe, the United States, and Argentina. We partner with leading global brands, delivering innovative digital solutions in sectors such as Fintech, Professional Services, Logistics, Healthcare, and Agriculture. Our operations are guided by a strong business vision, a people-first culture, and a commitment to responsible growth and community engagement.

✨ This description was enhanced by AI based on the original listing.