Senior Python Systems Developer - Functional Testing Project

We're seeking a Senior Python Systems Developer with deep functional testing experience to join our project-based AI team. The ideal candidate will have strong Linux and Docker skills, expertise in pytest, and experience with LLMs like Claude Code and Roo Code. The role involves creating functional black box tests for large codebases, leveraging LLMs to accelerate development cycles, and ensuring 100% reproducible builds and test execution across different platforms.

Requirements

• 5+ years of experience as a Software Engineer (primarily Python)
• Deep experience with pytest (fixtures, session-scoped, timeouts) and designing black-box functional tests for CLI tools
• Expert-level Docker skills (reproducible Dockerfiles, user contexts, secure workspaces)
• Strong Linux & Bash scripting skills and comfort debugging inside containers
• Proficiency with modern Python tooling (uv, pyproject.toml, packaging)
• Ability to read and understand with LLM many coding languages (for example C, C++, Rust, or Go)
• Experience using LLMs (Claude Code, Roo Code, Cursor) to accelerate iterative development and test-case generation

Benefits

• Fully remote and flexible participation
• Freelance project-based collaboration via the Mindrift platform (powered by Toloka AI)
• Opportunity to contribute to innovative AI projects for leading tech companies
• Supportive global community