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Senior Python Developer - Code Migration Expert

Toloka AIRemote — Stuttgart, Baden-Württemberg, Germany
Remote Contract $50/hr - $50/hr
Position filled

Experience Level

Senior

Qualifications

Essential Qualifications: Minimum of 5 years as a Software Engineer specializing in Python, extensive experience with pytest and Docker, strong Linux & Bash skills, and proficiency in multiple programming languages with LLM assistance. Preferred Qualifications: Previous work with agent evaluation platforms and MCP CLI.

About the role

We kindly request that candidates submit their CVs in English and specify their English proficiency level.

Mindrift connects skilled professionals with project-based AI opportunities from leading technology firms, concentrating on the testing, evaluation, and enhancement of AI systems. Please note that participation is project-based rather than permanent employment.

About the Position

We are seeking a seasoned Python developer with extensive functional testing experience, as well as robust skills in Linux and Docker. The ideal candidate should be proficient in reading code across multiple programming languages (such as C, Rust, Go) with the assistance of LLMs and translating requirements for migration tasks. Additionally, applicants should be confident in utilizing tools like Roo Code or Claude Code to streamline iterative development.

Primary Responsibilities

  • Develop functional black box tests for extensive codebases across diverse source languages.
  • Create and manage Docker environments to guarantee 100% reproducible builds and testing across various platforms.
  • Track code coverage and configure automated scoring criteria to achieve industry benchmark standards.
  • Utilize LLMs (Roo Code, Claude) to expedite development cycles, automate repetitive tasks, and enhance overall code quality.

Qualifications

  • A minimum of 5 years of experience as a Software Engineer, primarily in Python.
  • In-depth experience with pytest (including fixtures, session-scoped, timeouts) and designing black-box functional tests for CLI tools.
  • Expertise in Docker (reproducible Dockerfiles, user contexts, secure workspaces).
  • Strong skills in Linux & Bash scripting and comfort debugging within containers.
  • Familiarity with modern Python tools (uv, pyproject.toml, packaging).
  • Ability to comprehend and read multiple coding languages with LLM assistance (e.g., C, C++, Rust, or Go).
  • Experience leveraging LLMs (Claude Code, Roo Code, Cursor) for accelerated iterative development and test case generation.
  • English proficiency at a B2 level or higher.

Preferred Qualifications

  • Prior experience with agent evaluation platforms and MCP CLI.

Tools and Technologies: Python (pytest, uv, Pillow), Docker, Bash, Git Submodules, C/C++/Rust/Go (code reading), Dagger, GitHub Codespaces, LLMs (Claude Code, Roo Code, Cursor), coverage.py, gcov, kcov.

Benefits

What We Offer:

  • Freelance project-based collaboration through the Mindrift platform (powered by Toloka AI).
  • Completely remote and flexible participation — you can choose your schedule and the amount of work to contribute (20-30 hours per week).
  • Each project has a compensation level based on the required scope and expertise. For this project, AI trainers can earn up to $50 per hour.

About Toloka AI

Toloka AI is a forward-thinking organization dedicated to connecting specialists with innovative AI projects from leading technology companies. We focus on enhancing AI systems through rigorous testing and evaluation.

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