Mercor · Software & coding
Software Engineer Expert - review AI outputs in your specialty
Listed on Mercor as “Software Engineer Expert”
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 (Software Engineer Expert) 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 Mercor
1\. Role Overview
We’re hiring Software Engineers to build and ship apps for Mercor’s RL Studio platform. The role involves developing MCP servers and sometimes BUAs, integrating real software into sandbox environments, and ensuring apps are stable, testable, and production-ready.
2\. What You’ll Do
- Build MCP servers in Python using FastMCP
- Integrate web or desktop applications into RL Studio
- Work with APIs, Docker, Linux environments, and service configuration
- Implement populate/snapshot hooks for app state management
- Test apps locally and debug build, runtime, and permission issues
- Ensure apps meet platform validation and deployment requirements
3\. What We’re Looking For
- Strong Python skills
- Experience with APIs, backend systems, and debugging
- Familiarity with Docker, Linux, and local testing workflows
- Ability to work with configuration files and deployment pipelines
- Problem-solving skills and attention to technical detail
4\. Nice to Have
- Experience with FastMCP or similar frameworks
- Experience integrating third-party apps or developer tools
- Familiarity with web apps, databases, and containerized environments
Quoted from Mercor’s public listing on 2026-07-07. 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 Mercor
AI-interview-based talent network. One application, voice interview with their AI, then matched to projects across coding, research, and specialist work. Pay scales with track and seniority.
Mercor review: AI-interview talent network
4.1/5 on Glassdoor, fastest-growing platform in the category (+509% YoY). What the AI video interview actually asks, real pay across coding/research/medical/legal/finance tracks ($25-$200/hr), and the project-availability problem.
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