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Design and own comprehensive test plans for complex mobile features and cross-functional projects
Write, automate, and maintain test cases; contribute to mobile automation frameworks; drive QA process improvements
Mentor junior/mid-level QA engineers; collaborate with developers and product managers; represent QA in release readiness reviews
Must-have skills
5+ years in Quality Assurance or software testing with substantial mobile testing experience
Strong automation experience (Python, Pytest, Playwright, Cypress, or Appium)
Problem-solving and ability to manage multi-platform mobile projects
Proven mentorship/leadership abilities; strong English communication
Experience in Agile/Scrum environments; ISTQB certification
Nice-to-haves
CI/CD experience (Jenkins, GitLab CI) and mobile build test infrastructure
Experience with financial software, regulatory and security requirements
Location & work type
Tallinn, Estonia; on-site office in center of Tallinn (office-based role)
Full Description
About us
Wallester is a cutting-edge financial technology company that specializes in providing innovative solutions for businesses seeking to modernize their payment systems. By offering white-label card issuance platforms, seamless integration with existing infrastructure, and comprehensive support for both digital and physical cards, Wallester empowers companies to enhance their financial services and customer experience. Recognized as a leader in the FinTech space, Wallester has earned a reputation for its state-of-the-art technology, security, and scalability. Whether you are a startup or an established enterprise, Wallester delivers flexible, reliable solutions tailored to meet the evolving needs of the digital economy.
Responsibilities
As a Senior Mobile QA Engineer, you will take ownership of the quality of large-scale projects and help elevate the testing standards within the mobile team
Participate in the full software development life cycle, ensuring quality at every stage from design to deployment.
Design and own comprehensive test plans for complex mobile features and cross-functional projects.
Write, automate, and maintain test cases and contribute to the development of our mobile automation frameworks.
Analyze defects to identify patterns, risks, and systemic areas for process improvement.
Recommend and implement improvements to QA processes, tools, and practices specific to mobile testing.
Mentor and guide junior and mid-level QA engineers, fostering a culture of quality.
Share best practices and knowledge across the QA team, especially in mobile automation.
Collaborate with developers, product managers on complex mobile features and roadmap planning.
Represent QA in project discussions and critical release readiness reviews.
Stay updated on the latest mobile testing methodologies, tools, and industry trends (e.g., new iOS/Android platform features).
Evaluate and introduce new QA tools and technologies to the mobile team.
Requirements
5+ years of experience in Quality Assurance or software testing, with significant experience in mobile application testing.
Strong knowledge and experience of automation frameworks (Python, Pytest, Playwright, Cypress, or mobile-specific frameworks like
Appium).Solid problem-solving skills and the ability to manage complex, multi-platform mobile projects.
Proven mentorship and leadership capabilities, with experience guiding other QA professionals.
Strong English and communication skills.
Experience working with agile software development teams.
Ability to work independently and proactively, taking ownership of quality initiatives.
Mobile Application TestingTest Plan DesignTest AutomationAutomation FrameworksAppiumPytestPlaywrightCypressDefect AnalysisProcess ImprovementMentoringAgile Software DevelopmentRelease Readiness ReviewsMobile Testing MethodologiesQA Tool EvaluationLeadershipmulti-location
ISTQB certification.
Nice to have
Experience with CI/CD pipelines (e.g., Jenkins, GitLab CI) and managing test infrastructure for mobile builds.
Experience in financial software development, understanding regulatory and security requirements.
We offer
Competitive salary
Career opportunities
Medical Insurance upon the completion of the probationary period
Supportive and caring Leadership
A modern office in the center of Tallinn
A chance to work as part of a highly motivated and talented team