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MS

Passion  Fuels  Purpose! 

Biography

I began my tech journey at Geeknauts, building a strong foundation in web and mobile development. Working across both individual and team projects, I focused on creating intuitive user experiences and reliable application features, gaining versatility and a solid engineering mindset.

As my career evolved through Thundersoft and 3mk, I transitioned into quality engineering, taking ownership of testing across complex systems. This path eventually led me to SiriusXM, where I now focus on automation, integration validation and system-level reliability for large-scale, real-world applications used across the automotive ecosystem.

Marek's Profile Picture
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Projects Completed

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Years of Experience

Skills

Testing
Postman
Python
TypeScript
CI/CD
SQL
Playwright
Jest
Selenium

Experience

  • Software Engineer III  @SiriusXM

    2025 - present | SiriusXM

    As a Quality Engineer at SiriusXM, I work on the validation of in-vehicle applications used across a large automotive ecosystem. I focus on system reliability, automation, and integration testing to ensure high-quality releases in real-world conditions. My responsibilities include designing and executing test strategies, investigating system-level issues, and collaborating with engineering teams across Ireland and the US.

  • Quality Assurance  @3MK Protection

    2024 - present | 3MK Protection

    At 3MK, I was responsible for end-to-end quality across web, backend and mobile applications. I created and executed test plans, performed exploratory and regression testing, and supported early automation using Playwright and TypeScript. Working as the sole QA, I ensured high coverage, clear reporting, and direct communication with developers and product stakeholders.

  • Test Engineer  @ThunderSoft

    2022-2024 | ThunderSoft

    As a Test Engineer at ThunderSoft, I worked on infotainment and connected-car systems, performing functional and integration testing in embedded environments. My responsibilities included analyzing logs, validating backend communication flows, and supporting release readiness. I collaborated closely with developers to improve overall system stability.

  • Software Engineer  @Geeknauts

    2020-2022 | Geeknauts

    I worked on web and mobile application development, contributing to both team-based and independent projects. I delivered frontend and backend features, improved performance and usability, and supported release workflows. This role built the engineering foundation that later enabled my transition into quality engineering and automation.

Education

  • Master of Science in Computer Science, Specialization in Cybersecurity

    2021-2022 | Cracow University of Technology

    The Master's coursework included hands-on experience with security assessment and penetration testing tools such as Nmap, SonarQube, and Burp Suite, emphasizing practical approaches to vulnerability analysis and network security.

  • Bachelor Of Science In Computer Science

    2017-2021 | Cracow University of Technology

    Relevant courses included Data Structures and Algorithms, Computer Systems Engineering, and Artificial Intelligence