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Freelance Senior Python Developer - Functional Test Frameworks

Mindrift • Brazil

onsite

Salary: $17 / hour

Posted Jan 23, 2026

Role & seniority

  • Senior software developer; part-time, project-based, non-permanent

Stack / tools

Languages: Python (5+ years), C, Rust, Go

Testing: black-box functional tests (pytest, uv, Python 3.10)

Environments: Docker evaluation images, CI pipelines (Dagger, Codespaces)

Other: git submodules, cross-language migration workflows, AI response evaluation

Top 3 responsibilities

  • Analyze C/Rust/Go codebases to design behavioral tests and migration stubs for Rust targets

  • Design/implement black-box functional test frameworks for native CLI projects

  • Build reproducible Docker evaluation images and CI pipelines; manage secure workspace setup and submodule integration; assess AI responses with professional judgment

Must-have skills

  • Bachelor’s degree in Computer Science, Software Engineering, or related field

  • 5+ years software development experience; ≥5 years Python experience

  • Ability to read C, Rust, Go code; comfort working across languages

  • English proficiency at B2 (intermediate) or higher

  • Stable internet connection

Nice-to-haves

  • Experience with AI/ML evaluation tasks

  • Familiarity with Dagger, Codespaces, or related CI/CD tools

Location & work type

Location: must reside in the specified country; eligibility affects rates

Work type: project-based, time commitment around 10–20 hours/week during active phases

Compensation: paid contributions up to $17/hour; rates vary by project and expertise; some projects offer incentive payments

Notes

  • Subm

Full Description

This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. Please submit your resume in English and indicate your level of English proficiency.

Mindrift connects specialists with project-based AI opportunities for leading tech companies, focused on testing, evaluating, and improving AI systems. Participation is project-based, not permanent employment.

What This Opportunity Involves

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) → Join a project → Complete tasks → Get paid

Project time expectations

For this project, tasks are estimated to require around 10-20 hours per week during active phases, based on project requirements. This is an estimate, not a guaranteed workload, and applies only while the project is active.

Payment

Paid contributions, with rates up to $17/hour* 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 Show more Show less

PythonCRustGoDockerCI PipelinespytestAI SystemsBehavioral TestsMigration WorkflowsBlack-box TestingGitLinuxSoftware DevelopmentEnglish Proficiency

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