Mercor

Senior Python Engineer at Mercor

📍 Location
toronto, on
⏰ Job Type
Full-time
📅 Posted
June 01, 2026
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Job Description

Mercor is seeking a Senior Python Engineer to work remotely on high-impact AI projects. This contract role focuses on developing advanced Python systems for research applications.
As a Senior Engineer, you will utilize your experience to design and optimize complex Python systems. The role involves collaborating with leading AI research teams, enhancing model training and performance. Your work will ensure the production-level quality of tools and features developed.
Key Responsibilities:
• Develop complex Python systems for real-world applications
• Create modular and testable codebases using best practices
• Optimize performance through Python profiling techniques
• Collaborate with AI research teams on model improvements
• Meet project deadlines while working independently
Requirements:
• Experience with elite US tech firms
• Proven success in developing complex Python systems
• Deep Python language fundamentals knowledge
• Familiar with modern Py...

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