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:

• 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:

• 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

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:

• This role will pay $100/h based on experience