> Markdown version of [/jobs/ext/3953387-senior-software-engineer-open-source-ai-trainer](https://www.wearedevelopers.com/jobs/ext/3953387-senior-software-engineer-open-source-ai-trainer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Software Engineer - Open Source - AI Trainer - **Company:** Mercor, Inc. - **Location:** Chicago, IL, United States (Remote available) - **Experience:** Expert - **Salary:** $249,600.0 - **Contract:** Permanent contract - **Skills:** Training Data, Artificial Intelligence, Github, Machine Learning, Open Source Technology - **Published:** October 27, 2026 - **Apply:** https://www.careerjet.com/jobad/use88c83c5294afcf0577656933ecc1352 ## About the Role * Senior, Staff, or Principal Software Engineer experience. * Active contribution to open-source projects with recent commits. * Maintenance or contribution to projects with 100+ GitHub stars or clear package usage. ## Description * Contribute to AI model training, evaluation, and improvement. * Collaborate with AI research teams to enhance model outputs and training data quality. * Work independently and asynchronously to meet project deadlines. * Leverage technical skills and tools to drive impactful solutions.