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micro1 · Software & coding

Backend C#/.NET Developer

Listed on micro1 as “Backend C#/.NET Developer”

$60-$110/hrRemoteContractPaid in USD
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What this actually is

You review AI-generated code, rank model outputs against each other, write prompts that test edge cases, and provide expert feedback that gets used to train coding models. Not shipping production software. The platform title (Backend C#/.NET Developer) reflects the rate band and the expertise required, not the day-to-day work.

Can you do this on your visa?

F-2 / F-4 / F-5 / F-6: open. E-1 to E-7: needs concurrent-employment permit. D-2 / D-4 students: S-3 permit, 20 hr/week cap. D-10 / D-8: case by case.

Korean tax on USD income

First 5 years in Korea: foreign-source income only taxed if remitted into Korea. After year 5: worldwide income. Full tax guide.

Original posting from micro1

Job Title: Backend C#/.NET Developer

Job Type: Contract

Location: 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.

Quoted from micro1's public listing on 2026-10-29. We don't edit platform copy; honest framing is in the title and the “what this actually is” block above.

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About micro1

Recruits experts and generalists for AI training projects and lists each role with an hourly range on its own job board. You apply per role, then do a role-specific interview with micro1's AI recruiter.

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Is micro1 legit? Our review

A real US company that pays experts in USD through Deel twice a month. The hard part is getting from the Zara AI interview to paid work. Pay, who can join, and how Korean visa and tax rules apply.

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