Python SWE

Mercor is recruiting U.S./UK/Canada/Europe-based SWEs for a model-training project with a leading foundational model AI lab.

You are a good fit if you:

around 20 hours per week

1 month

This role will pay $100/h

Mercor is recruiting U.S./UK/Canada/Europe-based SWEs for a model-training project with a leading foundational model AI lab. You are a good fit if you: Have experience working at top US tech firms Proven track record of building and maintaining complex, production-grade Python systems — not just scripts or notebooks, but full-featured services, tools, or frameworks used in real-world environments. Deep understanding of Python language fundamentals, including advanced features like decorators, generators, async/await, context managers, and performance tuning (e.g., profiling, memory optimization). Experience designing modular, testable codebases, using modern Python tooling and best practices (e.g., FastAPI, Pydantic, type hints, dependency injection, unit/integration testing frameworks). Interview Process: Here are more details about the role: You must be able to commit around 20 hours per week for this role This contract is expected to last at least 1 month Successful contributions increase the odds that you are selected on future projects with Mercor The vetting process involves a 90 minute human interview centered on Python - you will hear back within two weeks With respect to pay and legal status: We consider all qualified applicants without regard to legally protected characteristics and provide reasonable accommodations upon request.

• Have experience working at top US tech firms
• Proven track record of building and maintaining complex, production-grade Python systems — not just scripts or notebooks, but full-featured services, tools, or frameworks used in real-world environments.
• Deep understanding of Python language fundamentals, including advanced features like decorators, generators, async/await, context managers, and performance tuning (e.g., profiling, memory optimization).
• Experience designing modular, testable codebases, using modern Python tooling and best practices (e.g., FastAPI, Pydantic, type hints, dependency injection, unit/integration testing frameworks).
• The vetting process involves a technical interview conducted by a human; you will not be allowed to use an AI IDE (Integrated Development Environment) but you will be allowed to use LLMs or Stack Overflow
• You must be able to commit around 20 hours per week for this role
• This contract is expected to last at least 1 month
• Successful contributions increase the odds that you are selected on future projects with Mercor
• The vetting process involves a 90 minute human interview centered on Python - you will hear back within two weeks
• This role will pay $100/h based on experience