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

(Summary generated by AI based on the full job description)

The project focuses on innovation in electric mobility within a corporate startup. It involves API testing with Postman and Swagger, SQL for data verification, and JIRA and Xray for defect and test management. Responsibilities include planning and executing integration and contract testing, analyzing results, and collaborating with development teams to improve product stability.

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

Company: Sii Sp. z o.o.

from: 21 August 2026
to: 20 September 2026
salary not specifiedB2B contract
Offer parameters
level:mid • senior
working mode:hybrid • full office
Warszawa, Mokotów
Warszawa, MokotówAleja Niepodległości 69View on map

Requirements

Expected technologies

Postman
SQL
Mobile Testing
Xray for Jira
Jira

Optional technologies

ISTQB

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 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

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
Company

About the project

We are looking for a skilled Senior Manual Tester to join a corporate startup focused on innovation in electric mobility. You will be part of a global hub dedicated to shaping the future of electric mobility. You will collaborate with developers and other teams to ensure product stability and contribute to the development of solutions that facilitate the transition to electric vehicles.
The role is hybrid and requires working from office 2 days a week.

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

Recruitment stages

  • 1.
    Send your CV
  • 2.
    Talk to us about your expectations
  • 3.
    Learn more about our projects and choose the best
  • 4.
    Start your adventure with Sii!

Sii Sp. z o.o.

Sii is the leading technology consulting, digital transformation, engineering, and business services vendor in Poland. We already employ more than 7 300 professionals and implement projects in a variety of industries for clients from many countries around the world. The Great Place to Work title, won 10 times in a row, proves that at Sii, we create a friendly work environment.
Sii ensures that all employment-related decisions are made solely on the basis of qualifications and competencies. We are committed to equal treatment of all individuals, regardless of any protected characteristics, and promoting a diverse and inclusive work environment.

This is how we work

Manual Tester – Web and Mobile Applications (f/m/x)
I apply to:
Sii Sp. z o.o.
Warszawa, Mokotów
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