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Senior Test Engineer

Cognizant • Vilnius, Vilnius County, Lithuania

hybridfull-time
Posted Aug 27, 2026Apply by Sep 26, 2026

**Role & seniority: ** Senior Test Engineer (5+ years)

**Stack/tools: ** Test automation (Selenium, Playwright, JUnit), CI/CD integration; defect tracking (bug tracking systems); BDD; regression/performance/log monitoring; cloud deployment testing

**Top 3 responsibilities: **

  • Design and execute test plans; detect, document, and track defects to ensure issues are resolved pre-release

  • Perform regression testing to confirm new changes don’t break existing functionality

  • Build/maintain automated test coverage (incl. Playwright) and integrate with CI/CD; troubleshoot with developers and stakeholders

  • Must-have skills:

    • Hands-on testing experience in multi-tier web applications

    • Test automation experience with Playwright (and Selenium/JUnit as applicable)

    • Experience working in Agile at scale and in multi-team environments with close dev collaboration

    • BDD understanding

    • Strong analytical problem-solving; fluent English communication

  • Nice-to-haves:

    • Performance/security/usability testing knowledge; accessibility testing (WCAG)

    • Testing complex backend/enterprise architecture

    • Bug-prevention/fail-fast mindset; knowledge sharing; analytical risk management

    • ISTQB certification

  • Location & work type: Hybrid in/around Vilnius or Kaunas (3 days/week onsite)

Full Description

We are seeking a detail-oriented Senior Test Engineer to join our team. The successful candidate will be responsible for designing, implementing, and executing test plans to ensure the quality and functionality of our software applications.

They will work closely with developers and other stakeholders to identify, document, and troubleshoot issues. Strong analytical skills and experience with automated testing tools are essential for this role. They will also be able to collaborate with other team members, including other engineers, product managers, and stakeholders to deliver high-quality software on time.

Responsibilities

Identify and Report Defects: Detect, document, and track software defects using bug tracking systems, ensuring issues are resolved before release.

Perform Regression Testing: Conduct regular regression testing to ensure that new features or changes do not negatively impact existing functionality.

Automate Testing Processes: Implement and maintain automated test scripts using tools such as Selenium, JUnit, or similar, to improve testing efficiency and coverage. Collaborate with cross-functional teams to ensure smooth deployment and operation of applications in the cloud environment. Monitor the performance, availability, logs Share knowledge and know-how inside and outside the team Mentor less experienced team members

Requirements

5+ years of experience in multi-tier web-based applications Experience of testing within Agile development at a scale. Previous work experience in multi-team environments, close collaboration with developers, project managers and clients Having hands on experience in test automation especialy in PlayWright framework, integration with CI/CD Understanding of BDD. Fluent communication in English

AND/OR (at Least One Of The Below)

Having hands on experience or a good understanding of performance, security, usability Experience with accessibility testing (WCAG) Experience with complex backend applications and enterprise system architecture

Nice To Have

Bug prevention and fail-fast mindset Mindset for knowledge sharing Proven analytical ability, problem-solving and risk management skills ISTBQ

We Offer

Encouraging working atmosphere, engaging activities and extra benefits (e.g. additional medical insurance (covers gym subscription), team events, outreach activities, and other) Hybrid work model (work from Vilnius or Kaunas office 3 times per week) Open, modern and ergonomic work environment when working from the office with multicultural community Opportunity to grow both professionally and personally and continuously develop within the domain Salary offer for the candidate is determined based on the predefined salary ranges for the position and depends on the level of competence and experience of the candidate.

Only suitable candidates will be contacted within 7 days from application.

Stay up to date with our website https: //www.cognizant.com/lt/en

Test AutomationPlayWrightCI/CDBDDSeleniumJUnitRegression TestingAgile DevelopmentWCAG Accessibility TestingPerformance TestingSecurity TestingUsability TestingBackend Application TestingEnterprise System ArchitectureBug TrackingAnalytical Skillsmulti-location

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