Test Engineer (Manual Tester)
Job Description
Location: Warsaw
Work model: On-site (5 days per week)
B2B via Experis
B2B rate: 100-130 PLN netto+VAT/h
Full-time job
Job description
We are looking for a Test Engineer to join our team responsible for ensuring the quality of key business applications. The ideal candidate has hands-on experience in software testing, strong SQL skills, and practical knowledge of working with relational databases. The role focuses on functional testing, data validation, and backend process analysis.
Responsibilities
Plan, design, and execute manual tests (functional, integration, regression).
Perform data-focused testing, including validation of data flows, transformations, and backend processing.
Write and execute SQL queries to validate data, investigate issues, verify test results, and support testing activities.
Experience testing APIs (REST, SOAP).
Analyze application logs and database data to identify potential defects and root causes.
Create and maintain test documentation (test cases, test scenarios, test reports).
Collaborate closely with developers, analysts, and Product Owners to understand requirements and resolve issues efficiently.
Report and track defects throughout their lifecycle (using Jira or similar tools).
Contribute to continuous improvement of testing processes and overall product quality.
Participation in scrum ceremonies (PI Planning, Sprint Planning, Daily, etc.)
Requirements
3+ years of experience as a Manual Tester / QA Engineer.
Strong SQL knowledge, including ability to write complex queries (JOINs, subqueries, GROUP BY).
Experience testing backend systems or data-driven applications.
Hands-on experience with relational databases (e.g., PostgreSQL, MS SQL, Oracle, MySQL).
Ability to analyze business and technical requirements.
Experience working with tools like Jira, Azure DevOps, or TestRail.
Strong test documentation skills.
Good understanding of testing techniques (equivalence partitioning, boundary value analysis, etc.).
Solid organizational skills and ability to work independently.
Experience working in Agile/Scrum environments.
Nice to Have
Basic knowledge of test automation tools (e.g., Postman, Python, Java, Selenium).
Familiarity with CI/CD pipelines.
What We Offer
B2B contract via Experis
Work in an experienced QA team with real impact on product quality.
Opportunities to grow toward test automation or specialization in database testing.
Flexible working hours.
Access to training platforms and mentoring
Medicover
Multisport
E-leaning platform
Group insurance
Skills & Requirements
About Experis Manpower Group
Experis is a global leader in IT professional resourcing, project solutions, and managed services specializing in Business Transformation, Enterprise Applications, Cloud and Infrastructure, Digital Workspace and Cyber Security. As digital transformation and acute skills shortages in tech continue unabated, Experis provides talent with the powerful combination of in-demand technical skills together with the soft skills that are critical for business success. We can connect you to individuals with a specific skill set, manage capacity across a team, or deliver in-house technology experts to take your project to full delivery. Visit www.experis.com to learn more. Experis is a part of the ManpowerGroup family of companies, which also includes Manpower, Talent Solutions and Jefferson Wells.
Industry: Staffing and Recruiting