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Backend C#/.NET Developer

$30 - $110/hr Worldwide Remote · worldwide coding Contract / freelance
Pay rate · $30 - $110/hr
  • Job Description
  • Backend C#/.NET Developer
  • Contract
  • Remote

Job Summary

In this role, you'll apply your expertise to help train next-generation AI systems. Your work will shape how models learn, reason, and perform through high-quality, real-world input. No prior experience in AI is required — your domain knowledge is what matters.

Key Responsibilities

  • Design, develop, and maintain robust backend services and APIs using C# and .NET frameworks.
  • Collaborate with cross-functional teams to define technical requirements and deliver scalable solutions.
  • Ensure high standards of code quality, reliability, and security in all backend implementations.
  • Optimize existing backend processes for performance, scalability, and maintainability.
  • Troubleshoot, debug, and resolve backend issues efficiently in production and staging environments.
  • Document technical specifications and backend architecture clearly for team collaboration.
  • Contribute to the continuous improvement of development processes and best practices.

Required Skills and Qualifications

  • Expert-level proficiency in C# and the .NET ecosystem.
  • Strong experience with MySQL databases, including schema design and query optimization.
  • Solid understanding of server-side logic, RESTful API development, and integration patterns.
  • Track record of writing clean, maintainable, and well-documented code.
  • Excellent written and verbal communication skills, with an emphasis on clarity and collaboration.
  • Ability to work independently in a fully remote setting while managing priorities effectively.
  • Proactive problem-solving skills and a commitment to continuous learning.

Preferred Qualifications

  • Experience developing and deploying cloud-hosted applications (e.g., AWS, Azure, GCP).
  • Background working with distributed teams and Agile methodologies.
  • Previous work in high-growth, innovation-driven environments.
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