Mercor · Open to all

Open Source Applied Engineer Talent Network - review AI outputs in your specialty

Listed on Mercor as “Open Source Applied Engineer Talent Network”

$100/hrRemoteContractPaid in USD

What this actually is

You complete short labeling tasks, record everyday activities, or evaluate AI outputs across general knowledge domains. Open to most backgrounds. The platform title (Open Source Applied Engineer Talent Network) 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

Mercor is seeking an exceptional open source contributor with deep expertise in Python, Java, C, JavaScript, or TypeScript to collaborate on high-impact projects with global reach. This role is ideal for engineers with a strong command of core programming fundamentals and a proven track record of consistent, high-quality contributions to leading open-source repositories.

Key Responsibilities:

Design and oversee the creation of evaluations for a wide range of coding tasks across multiple languages, including JavaScript, TypeScript, Python, Java, and C.

Develop test cases to accurately assess system performance in diverse engineering scenarios.

Analyze system behavior on real-world user use cases to uncover strengths and improvement areas.

Communicate evaluation results effectively to the research team to support continued development and optimization.

You're a great fit if you have:

A strong GitHub (or similar) presence with frequent, high-quality contributions to top open-source projects in the last 12 months.

Expertise in one or more of the following languages: Python, Java, C, JavaScript, or TypeScript.

Deep familiarity with widely-used libraries, frameworks, and tools in your language(s) of choice.

Excellent understanding of software architecture, performance tuning, and scalable code patterns.

Strong collaboration skills and experience working within distributed, asynchronous teams.

Confidence in independently identifying areas for contribution and executing improvements with minimal oversight.

Comfortable using Git, CI/CD systems, and participating in open-source governance workflows.

Quoted from Mercor’s public listing on 2026-06-02. We don’t edit platform copy; honest framing is in the title and the “what this actually is” block above.