Oglasi za posao Senior QA Automation Engineer

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Senior QA Automation Engineer

Green Castle Digital d.o.o.

Beograd | Hibrid

27.09.2025.

.NET C# Java Git TestNG Selenium Maven Jenkins Azure DevOps QA Cucumber Agile RESTful Appium senior

Location: New Belgrade
Work Pattern: Hybrid (Ideally 3 days a week on-site)
Reports to: QA Lead

About Greencastle Digital

Greencastle Digital is a forward-thinking company in the dynamic betting and gaming industry, with a new Development Centre in Belgrade. Our mission is to unite the brightest minds in digital technology, product development, customer experience, and marketing to deliver innovative solutions for clients across Europe1.

About the Role

We are seeking an experienced Senior QA Automation Engineer to join our team in Belgrade. In this role, you will play a pivotal part in ensuring the quality and reliability of our software solutions. You will work closely with cross-functional teams, architect and implement automated test frameworks, and drive best practices in test automation for both UI and API layers using Selenium, Java, .NET, and related technologies.

This position requires strong technical expertise in automation, deep understanding of QA methodologies, and the ability to collaborate effectively with team members and stakeholders.

Key Responsibilities

Automation Framework Development:

  • Design, develop, and maintain robust automated test frameworks using Selenium, Appium, TestNG, Cucumber (BDD), JUnit, NUnit and Sikuli with Java, as well as Playwright and ReqnRoll with C#.

API Testing:

  • Develop and execute automated tests for RESTful APIs, ensuring comprehensive coverage and reliability.

Test Strategy & Execution:

  • Define and implement comprehensive test strategies for both new and existing features across web, mobile, games and backend services.

Continuous Integration:

  • Integrate automated tests into CI/CD pipelines to enable rapid and reliable software delivery.

Collaboration:

  • Work closely with developers, product managers, and other QA engineers to ensure high-quality deliverables.

Code Quality:

  • Write clean, maintainable, and well-documented test code following industry best practices.

Defect Management:

  • Identify, document, and track defects through to resolution, ensuring root cause analysis and prevention.

Mentorship:

  • Guide and mentor junior QA engineers, fostering a culture of continuous improvement.

Documentation:

  • Create and maintain technical documentation for automation frameworks, test cases, and processes.

Continuous Improvement:

  • Stay updated with the latest trends and advancements in test automation and quality assurance.

Required Qualifications

Experience:

  • Minimum of 8-10 years of hands-on experience in QA automation.

Technical Expertise:

  • Strong proficiency in Selenium WebDriver, Appium, TestNG, and Sikuli using Java, as well as Playwright using C#.
  • Solid understanding of BDD frameworks, including Cucumber and ReqnRoll, for BDD and test automation.
  • Extensive experience in automating UI and API tests.
  • Solid understanding of RESTful API testing tools and frameworks (e.g., RestAssured, Postman, or similar).
  • Hands on Experience on Games Automation
  • Familiarity with CI/CD tools (e.g., Jenkins, Azure DevOps, GitLab CI).

Coding Skills:

  • Advanced knowledge of Java and C#/.NET for automation scripting.
  • Experience with source control systems (e.g., Git).
  • Familiar with Maven and .NET CLI commands for build, test, and project management tasks.


Testing Methodologies:

  • Deep understanding of QA methodologies, test planning, and defect management.
  • Experience working in agile development environments.

Soft Skills:

  • Strong problem-solving abilities and attention to detail.
  • Excellent communication and teamwork skills.

What We Offer

Innovative Environment:

  • Be part of a groundbreaking team in a newly established Development Centre.

Professional Growth:

  • Opportunities for continuous learning and career advancement.

Collaborative Culture:

  • Work in a supportive environment that values collaboration and innovation.

Flexible Work Pattern:

  • Enjoy a hybrid work environment with a balance of remote and on-site collaboration.

How to Apply:

If you are passionate about quality, automation, and eager to contribute to innovative projects in a collaborative, fast-paced environment, we would love to hear from you!

Please submit your resume and a cover letter detailing your relevant experience and why you are interested in joining Greencastle Digital.

To read more about the project, please click here: https://greencastledigital.teamtailor.com/jobs/5067937-senior-software-engineer

Upoznaj kompaniju

O Kompaniji Poslovi

Who We Are:


We are Greencastle Digital, the digital powerhouse behind challenger betting and gaming brands. We are a technology hub and also much more: A community of innovators, creators, and problem solvers who are committed to shaping the future of the gambling industry.


What We Do:


At Greencastle Digital we merge cutting-edge technology with a personal touch to create world-class entertainment experiences. Our expertise extends across product development, customer experience, marketing, and business operations. We are at the forefront of innovation in the gaming space, whether that be crafting seamless digital experiences or bringing the boldest ideas to life through technology.


Our Brands:


We power some of the most exciting names in sports betting, casino, and game development:

BoyleSports: Ireland’s largest independently-owned bookmaker, offering premium betting experiences.

S Gaming: A cutting-edge studio creating sustainable and innovative online games.

Timberazo: A Peruvian betting and gaming brand delivering distinctive customer-focused experiences.


Why Join Us?


At Greencastle Digital, we combine the spirit of a start-up with the expertise of an industry leader. 


We offer:


  • Future-Ready Careers: Empowering teams to grow and succeed in a dynamic environment with opportunities to work on innovative projects that challenge and develop their skills.
  • Collaboration and Creativity: A workplace where ideas thrive and diverse perspectives drive success. At Greencastle Digital every voice matters and team members are encouraged to share their ideas to foster collaboration and creativity
  • Innovation at Every Level: The betting and gaming industry is a rapidly evolving space and we are committed to being at the forefront of that change and innovation.
  • Our Teams
  • Our success is built on the talent and passion of our people:
  • Technology: The innovators driving success by connecting, protecting, and enabling our brands.
  • Greencastle Studio: The creative heart of our gaming innovation, blending art, storytelling, and programming.
  • People: The champions of our thriving work environment, ensuring every team member feels valued and supported.
  • Join the Journey
  • Are you passionate about shaping the future of betting and gaming? Do you see yourself as a tech wizard, a creative thinker or a passionate problem-solver? If so there could be a place for you at Greencastle Digital as we create next-level entertainment for players and punters worldwide.

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