Job Title: Senior QA with GenAI experience (freelance) (part-time)

Location: Remote (Poland preferred)
Start Day: ASAP

Engagement: Part-time (with potential to transition to full-time)

Language requirement: Polish – mandatory

Contract type: B2B only
Salary rate: up to 125PLN net+vat/h


Project Description

We’re hiring a QA Engineer to test Python-based web apps with AI/ML components. The role covers web app testing plus quality checks for predictive models and data pipelines. Part-time, with potential to grow into full-time.

Responsibilities

Design and execute test scenarios for Python-based web applications

Assess AI model performance using metrics such as precision, recall, F1-score, bias, fairness, and explain ability

Conduct robustness testing and validate data quality used for training models

Work with tools supporting AI/ML model testing (e.g. MLflow, TensorBoard, Great Expectations, Evidently AI)

Cooperate with data scientists and engineers to define QA standards for data-driven systems

Apply testing methodologies suited for predictive, model-based architectures

Requirements

Must-haves:

• Experience testing web applications (especially in Python environments)
• Fluency in Polish (for communication, documentation, and collaboration)
• Understanding of the difference between classical software QA and data/model-based testing

Nice-to-haves:

• Practical experience in testing AI/ML models or data validation processes
• Familiarity with model performance metrics (precision, recall, F1-score)
• Exposure to tools such as MLflow, TensorBoard, Great Expectations, Evidently AI
• Experience with fairness, bias, or explainability validation of AI systems

In return, we offer:

• 100% remote, flexible work;
• work with an experienced team of developers and continuous development of your hard and soft skills;
• dev-friendly processes such as Continuous Integration, Continuous Delivery, Code Review and bug bashes;
• long-term collaboration on challenging products (FinTech, B2B software, E-commerce and more).

 If you need any disability-related adaptation at any step of the recruitment process – simply let the recruiter know! We'd be happy to help.

Apply Link: https://choto.co/rq9wtnbp

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