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Open Source Contributor

icon building Company : Mercor
icon briefcase Job Type : Full Time

Number of Applicants

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Job Description - Open Source Contributor

Mercor is seeking experienced developers with a proven record of open-source contributions to join a high-quality, global network of engineers supporting AI, data, and enterprise software infrastructure projects.

This opportunity is designed for developers who are deeply engaged in the open-source ecosystem and have a passion for backend architecture, scalable systems, and reliable software engineering.

Key Responsibilities

  • Design challenging coding problems with clear input/output specs, constraints, and explicit function signatures.

  • Develop complete mini-repos, including:

    • Problem statement

    • Reference solution

    • Comprehensive unit tests (10–20 cases)

    • Executable test runner

  • Implement clean, production-quality code aligned strictly with test expectations.

  • Write high-coverage tests covering edge cases, invalid inputs, and performance constraints.

  • Ensure full executability with no missing dependencies, configuration issues, or signature mismatches.

Requirements

  • 3+ years of backend development experience in one or more of the following languages: Rust, C++, C, COBOL, Java, Ruby, PHP, Python, TypeScript, Go, C#, JavaScript

  • Familiarity with Docker and basic CI/CD workflows (e.g., GitHub Actions or similar tools)

  • Strong understanding of clean code, modular design, and performance optimisation

  • Comfortable working with Git-based collaboration (PRs, issues, reviews)

Role Details

  • Expected commitment: ~10–20 hours/week

  • High-impact contributions to globally visible projects

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