Freelance Senior Python Developer - Functional Test Frameworks

Mindrift connects specialists with project-based AI opportunities for leading tech companies, focused on testing, evaluating, and improving AI systems. Participation is project‑based as an independent freelance contributor and does not create an employment relationship with Toloka or our clients.

What this opportunity involves

As an independent freelance contributor, you choose which projects to join and how you organize your work, as long as deliverables meet the project requirements and deadlines.

While each project involves unique tasks, contributors may:

• Coordinate cross-language migration workflows by analyzing C/Rust/Go codebases to create behavioral tests and migration stubs for Rust targets.

• Design and implement black-box functional test frameworks (pytest + uv, Python 3.10) for native CLI projects.

• Built reproducible Docker evaluation images and CI pipelines for agent evaluation (Dagger/Codespaces), handling secure workspace setup and git submodule integration.

• Apply professional judgment to assess AI responses.

What we look for

This opportunity is a good fit for senior software developers open to part-time, non-permanent projects. Ideally, contributors will have: 

• Degree in Computer Science, Software Engineering or related fields

• 5+ years in software development with at least 5 years in Python

• Familiarity with C, Rust, Go / confidence to read this code with LLM

• English proficiency - B2

• Stable internet connection 

How it works

Apply → Pass qualification(s) → Select a project → Complete tasks on your own schedule within project timelines→ Get paid

Project time expectations

For this project, tasks are estimated to require around 10–20 hours of work per week during active phases, depending on the tasks you choose to complete. This is an estimate only and does not create any minimum or guaranteed hours.

Payment

• Paid freelance contributions, with rates that may be equivalent to up to $80/hour* (project‑ and task‑based)

• Fixed project rate or individual rates, depending on the project

• Some projects include incentive payments

*Note: Rates vary based on expertise, skills assessment, location, project needs, and other factors. Higher rates may be offered to highly specialized experts. Lower rates may apply during onboarding or non-core project phases. Payment details are shared per project.