Role brief
Job description
Current Mercor opportunity: Open Source Applied Engineer Talent Network appeared in the live Mercor Explore catalog and was rechecked from the current role page on 2026-09-18.
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.
Current source check: Active on Mercor as of 2026-09-18. Confirm pay, hours, location eligibility, and screening steps in Mercor’s application flow.
Apply through the Mercor link in this listing. WorkAppily is not the hiring employer and does not control role availability or hiring decisions.