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Synthires

Synthires

via LinkedIn

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Open Source Developer (Remote | $150/hr)

Anywhere
Contract
Posted 11/4/2026
Verified Source
Key Skills:
Open-source code review
Software development
API design and integration
Technical writing
Testing and debugging

Compensation

Salary Range

$312K - 312K a year

Responsibilities

You would create engineering tasks and reference solutions for a mature open-source project, then evaluate AI-generated code, tests, and grading materials.

Requirements

The role requires recent, verifiable maintainer or core-contributor activity on a widely used open-source project, senior code-review skills, local project testing including Docker, and a 30–40-hour weekly exclusive contract commitment.

Full Description

Open Source Maintainer – Software Engineer (Remote | $150/hr) Position: Open Source Maintainer / Core Contributor – Software Engineer Type: Hourly Contract Compensation: $150/hour Location: Remote Commitment: 30–40 hours per week, weekdays, exclusive engagement About the Opportunity A leading AI research project is seeking experienced open-source maintainers and core contributors to support the development and evaluation of advanced AI models. You will apply hands-on engineering expertise, code review judgment, and deep knowledge of a mature open-source codebase to create realistic engineering tasks and evaluate AI-generated code. Key Responsibilities • Develop realistic engineering tasks based on an open-source project you know well, including features, refactoring, and bug fixes. • Create accurate reference solutions and evaluation materials. • Review AI-generated code, tests, and grading rubrics against repository architecture and quality standards. • Build, run, and test projects locally, including using Docker. • Provide detailed technical feedback and explain the strengths and weaknesses of AI-generated solutions. • Collaborate with subject matter experts to maintain consistent and accurate training data. Required Qualifications • Must be a maintainer or core contributor of a widely used open-source project: • Maintainer: Listed in MAINTAINERS or CODEOWNERS, or completed at least 10 PR reviews in the last 12 months. • Core contributor: At least 3 substantive merged PRs in the last 12 months. • Experience contributing to a repository that is at least 2 years old, actively maintained, has real users, and follows an established code review process. • Verifiable history of sustained open-source contributions through your GitHub account. • Senior-level code review skills and ability to assess AI-generated code, tests, and edge cases. • Hands-on experience building and testing projects locally, including with Docker. • Strong written communication and technical reasoning skills. • Ability to personally write clear technical feedback and evaluation rationales. Engagement Requirements • Commit to 30–40 hours per week during weekdays. • Maintain an exclusive engagement, with no other full-time role or AI training/evaluation projects during the contract. • Complete required background checks and confidentiality agreements. • Work on a company-provided device. Compensation Earn $150 per hour for the contract engagement. Cincinnatus LLC serves as the employer of record, managing employment, payroll, benefits, and compliance while placing professionals within client teams. Application Process The application process was not specified in the provided listing. Candidates should be prepared to demonstrate their open-source contribution history through their public GitHub profiles.

This job posting was last updated on 11/4/2026

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