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Sii Sp. z o.o.

Manual Tester – Web and Mobile Applications (f/m/x)

Sii Sp. z o.o. Show all offers
B2B
Hybrid
Mid
Senior
Warszawa, Masovian
Expires Oct 21, 2026
11 hours ago

In short

Manual Tester role for web/mobile apps. Responsibilities include integration/contract testing, API testing (Postman, Swagger), SQL queries, defect documentation (JIRA, Xray). Requires 3+ years experience, English/Polish fluency.

Keywords

api testing sql jira web applications mobile applications test management postman swagger

AI-written summary based on the listing content.

Technologies we use

About the project

Your responsibilities

  • Planning and executing integration and contract testing to ensure product quality
  • Conducting thorough analysis and evaluation of test results to identify areas for improvement
  • Utilizing API testing tools like Postman and Swagger to validate service functionality
  • Employing SQL queries to verify data integrity and database interactions
  • Documenting testing processes and results using tools like JIRA and Xray for Jira
  • Collaborating with developers to understand critical paths and enhance product stability
  • Building strong cooperation with other development teams to improve overall testing processes

Our requirements

  • At least 3 years of experience as a software tester of web and mobile applications
  • Proficiency in API testing tools such as Postman and Swagger
  • Experience with SQL databases and executing queries
  • Familiarity with defect management tools like JIRA and test management tools like Xray
  • Solid knowledge of common test design techniques and the software development lifecycle
  • Excellent communication and team collaboration skills
  • Fluency in Polish and English

Optional

  • Experience in automation testing of mobile and web applications
  • Knowledge of card payments and card management systems
  • ISTQB Foundation Level and/or ISTQB Advanced Level Test Analyst certification

What we offer

  • Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas
  • Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market
  • We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022
  • Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more
  • Comfortable workplace – class A offices or remote work
  • Dozens of fascinating projects for prestigious brands from all over the world – you can change them thanks to Job Changer application
  • PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers
  • Investment in your growth – meetups, webinars, training platform and technology blog – you choose
  • Fantastic atmosphere created by all Sii Power People
Published 2026-09-21
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