Senior Test Automation Engineer

Billennium; Warszawa; Hybrid; PLN 60,000 - 80,000; Full time

Benefits offered by this job

Comprehensive benefits including Udemy for Business, private medical care.

Flexibility with remote/hybrid work options.

Opportunities for professional development.

Work with a diverse, international team.

Engaging community and team-building events.

Job summary

Billennium is seeking an experienced Test Automation Engineer for a long-term project in the fuel retail sector. This hybrid role requires on-site work at the client’s Warsaw office every Thursday.

You will plan and execute various testing processes, work closely with developers, and utilize skills in performance testing and CI/CD. The position offers comprehensive benefits, opportunities for professional growth, and the chance to work with an international team in a flexible environment.

Qualifications

• At least 5 years of experience as software tester.
• Experience in performance testing.
• Experience with Jira (preferably with X-ray).
• Proficiency with Git.
• Proficiency in using Postman for API testing.
• Expert in CI/CD process and tools.

Responsibilities

• Plan and execute integration, system and usability testing.
• Take part in E2E and UAT testing.
• Work with developers to understand the critical paths and ensure product stability.

Skills

Software testing

Performance testing

Jira

Git

API testing with Postman

CI/CD process

API response structure

Testing framework building

Coding practices

Tools

Cypress

TestNG/jUnit

Cucumber

JMeter

REST Assured

Gatling

Appium

XCUI Test

Job description

Billennium is a global technology company with over 20 years of experience, committed to innovation and empowering businesses. As an employer, we offer a supportive, growth‑focused environment where collaboration and creativity thrive. Join us to shape the future of technology together!

We are looking for an experienced Test Automation Engineer who will join a long‑term project for our client in the fuel retail sector.

This is a hybrid role, with on‑site work at the client’s Warsaw office every Thursday.

What you will do:

• Plan and execute integration, system and usability testing.
• Take part of E2E and UAT testing.
• Work with developers to understand the critical paths and ensure product stability.
• Build better cooperation with other Dev Teams.

What we are looking for:

• At least 5 years of experience as software tester.
• Experience in performance testing.
• Experience with Jira (preferably with X-ray).
• Proficiency with Git.
• Proficiency in using Postman for API testing.
• Expert in CI/CD process and tools.
• Excellent understanding of API response structure.
• Experience in testing framework building and maintenance.
• Expertise in understanding of the entire SDLC.
• Good programming practices and design patterns (SOLID, KISS, OOP etc.).
• Experience in code review.
• Experience with tool integration and adopting to new solutions and technologies (POC, showcase).

For Web Front:

• Cypress
• TestNG/jUnit
• Cucumber
• JMeter (nice to have)

For API:

• REST Assured
• TestNG/jUnit
• Gatling
• Appium
• XCUI Test

For Performance:

• Gatling
• JMeter (nice to have)

Perks and benefits (our offer):

• Comprehensive benefits - enjoy Udemy for Business, private medical care, Multisport card, veterinary package, language lessons, and shopping vouchers.
• Flexibility - adaptable working hours and remote/hybrid work options to suit your lifestyle & location.
• Career growth - access opportunities for professional development and learning, including perks related to our official partnerships with global IT giants: Microsoft, AWS, Snowflake, Salesforce & more.
• Global collaboration - work with a diverse, international team.
• Innovative environment - be part of a forward‑thinking and growth‑oriented workplace.
• Engaging community - work with passionate professionals and participate in team‑building events, hackathons, and CSR initiatives to make an impact beyond work.
• Team‑building events - including our company tradition (annual company event in Mazury).
• A pleasant surprise to start your journey with us in the form of a welcome pack.