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