Senior Python Systems Developer - Functional Testing Project
On-site · Munich, Bavaria, Germany or Frankfurt am Main, Hesse, Germany
Munich, Bavaria, Germany or Frankfurt am Main, Hesse, GermanyOn-siteContractSenior LevelNot SpecifiedUnknown
Type
Contract
Level
Senior Level
Education
Not Specified
Company size
Unknown
Job Summary
Senior Python Systems Developer responsible for creating functional black-box tests for large codebases, managing Dockerized environments for reproducible builds and test execution across platforms, monitoring code coverage with automated scoring aligned to industry benchmarks, and leveraging LLMs (Roo Code, Claude) to accelerate development, automate repetitive tasks, and improve overall code quality in a fully remote, freelance project-based setting.
Required Qualifications
- 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
- English language - B2 or higher
- Prior experience with agent evaluation platforms and MCP CLI
- Tools and Technologies: Python (pytest, uv, Pillow), Docker, Bash, Git Submodules, C/C++/Rust/Go (reading), Dagger, GitHub Codespaces, LLMs (Claude Code, Roo Code, Cursor), coverage.py, gcov, kcov.
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