May 2, 2026

Python Test Automation Developer (f/m/x)

Mid • Remote

Bialystok, Poland

We are seeking a highly skilled Python Test Automation Engineer to join our team!

The project operates in the aviation sector and involves a mission-critical flight management system used in a highly regulated environment. It is developed and maintained by multiple international teams working in a distributed setup.

The system we are working on is complex, so our goal is to improve test efficiency, scalability, and overall quality through a more standardized and maintainable approach.

Your tasks

Writing new tests in Python
Developing a testing framework using Selenium
Working with Cucumber/Gherkin
Focusing on refactoring existing test suites and expanding automation
Improving test efficiency

Requirements

Minimum 3 years of Python development experience
Experience in UI test automation in Selenium
Hands-on experience in Cucumber/Gherkin to drive BDD-based software development
API Testing using Postman, Swagger
English at an advanced level
Residing in Poland required

Nice-to-have requirements

Knowledge of CI/CD processes (Jenkins or other tools)
Experience in working with GitHub

What we offer

Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas
Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market
We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022
Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more
Comfortable workplace – class A offices or remote work
Dozens of fascinating projects for prestigious brands from all over the world
PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers
Investment in your growth – meetups, webinars, training platform and technology blog – you choose
Fantastic atmosphere created by all Sii Power People

If you want to work on systems with high operational significance — apply now!

Sii

Sii is a company recognized as a "Great Place to Work" since 2015, thanks to employee feedback and the implementation of new ideas. Established in 2006, Sii has demonstrated financial stability with a revenue of 2.1 billion PLN and no debts. The company shares its profits with employees, having allocated over 76 million PLN for this purpose since 2022. Sii offers a rich benefits package, including private healthcare, a cafeteria platform, and discounts on cars. Employees can work in comfortable A-class offices or remotely. Sii is involved in numerous fascinating projects for prestigious global brands and invests 1 million PLN annually to support employee passions and volunteer actions. The company emphasizes personal development through meetups, webinars, a training platform, and a technology blog. Sii is characterized by a fantastic atmosphere created by its "Sii Power People."

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