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Open Source Backend Developer

Mercor

Canada · On-site Part-time $50 – $85/hr 3w ago

About the role

**About The Job** • *Mercor** connects elite creative and technical talent with leading AI research labs. Headquartered in San Francisco, our investors include • *Benchmark** , • *General Catalyst** , • *Peter Thiel** , • *Adam D'Angelo** , • *Larry Summers** , and • *Jack Dorsey** . • *Position:** Developer • *Type:** • *Contract** • *Compensation:** • *$50–$85/hour** • *Commitment:** • *10–20 hours/week** • *Role Responsibilities**

- Design challenging coding problems with clear input/output specs, constraints, and explicit function signatures. - Develop complete mini-repos, including problem statements, reference solutions, comprehensive unit tests (10–20 cases), and executable test runners. - 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. - Contribute to globally visible projects with high impact. • *Qualifications** • *Must-Have**

- 3+ years of backend development experience in 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 optimization. - Comfortable working with Git-based collaboration (PRs, issues, reviews). • *Application Process (Takes 20–30 mins to complete)**

- Upload resume - AI interview based on your resume - Submit form • *Resources & Support**

- For details about the interview process and platform information, please check: https://talent.docs.mercor.com/welcome/welcome - For any help or support, reach out to: support@mercor.com • PS: Our team reviews applications daily. Please complete your AI interview and application steps to be considered for this opportunity.* ,

Requirements

  • 3+ years of backend development experience in 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 optimization.
  • Comfortable working with Git-based collaboration (PRs, issues, reviews).

Responsibilities

  • Design challenging coding problems with clear input/output specs, constraints, and explicit function signatures.
  • Develop complete mini-repos, including problem statements, reference solutions, comprehensive unit tests (10–20 cases), and executable test runners.
  • 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.
  • Contribute to globally visible projects with high impact.

Skills

RustC++CCOBOLJavaRubyPHPPythonTypeScriptGoC#JavaScriptDockerCI/CDGit

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