(part-time) Senior QA with GenAI experience (freelance)

Netguru | B Corp™; Poland; Remote; PLN 120,000 - 180,000; Part time

Job summary

A leading technology company is seeking a part-time Senior QA Engineer with GenAI experience to join their team. The role involves testing Python-based web applications integrated with AI/ML components. Candidates must have experience testing web applications and fluency in Polish. This opportunity offers remote work and the potential for a full-time position based on performance.

Benefits

100% remote, flexible work

Work with an experienced team

Dev-friendly processes

Long-term collaboration on challenging products

Qualifications

• 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.

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 explainability.
• Conduct robustness testing and validate data quality used for training models.
• Work with tools supporting AI/ML model testing (e.g. MLflow, TensorBoard).
• Cooperate with data scientists and engineers to define QA standards.

Skills

Experience testing web applications

Fluency in Polish

Understanding of data/model-based testing

Tools

MLflow

TensorBoard

Great Expectations

Evidently AI

Job description

Overview

(part-time) Senior QA with GenAI experience (freelance)

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 are looking for a QA Engineer to join the client\'s team working on Python-based web applications integrated with AI/ML components. This role combines traditional software testing with quality assurance for predictive models and data pipelines. The ideal candidate has solid experience in testing web applications and is either familiar with or motivated to learn how to evaluate the quality and fairness of AI/ML systems. This is a part-time opportunity with potential to evolve into a full-time role based on project needs and performance.

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 explainability
• 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

Benefits

• 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)

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