Open Source Contributor

London - UK

Monthly Salary: Not Disclosed

Posted on: 12 hours ago

Vacancies: 1 Vacancy

Job Summary

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 (1020 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: 1020 hours/week
High-impact contributions to globally visible projects

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 ecos...