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Offer summary
(Summary generated by AI based on the full job description)
The project focuses on a platform supporting electric vehicle charging services and energy solutions in Scandinavian countries. It uses a microservice-based ecosystem and backend testing with asynchronous event-driven flows. Responsibilities include planning and executing integration, system, and usability tests, validating complex backend workflows, collaborating with development teams, and improving product quality. API testing is done with Postman, Swagger and test management tools like Jira, TestRail.
from: 14 July 2026
to: 13 August 2026
salary not specifiedB2B contract (full-time)
salary not specifiedcontract of employment
Offer parameters
level:senior
working mode:hybrid • full office
Warszawa, Mokotów
Requirements
Expected technologies
TestRail
Postman
SQL
API
Microservices
Jira
Our requirements
- At least 5 years of experience in software testing, including planning, execution, and evaluation of tests
- Strong background in backend testing within microservice-based, asynchronous, and event-driven architectures
- Hands-on practice with API testing (Postman, Swagger), messaging flows (AWS SNS/SQS), and validation of data across integrated services
- Practical knowledge of test and defect management tools such as Jira, TestRail, and Xray
- Confidence in working with SQL databases, logs, and request tracing to ensure end-to-end quality
- Solid understanding of the software development lifecycle and Agile testing approaches
- Ability to communicate effectively and collaborate with multiple development and cross-functional teams
- Fluent in Polish and English, both written and spoken
- Residing in Poland required
Optional
- Previous work in automation testing of mobile and web applications
- Knowledge of REST API standards, HTTP protocols, and API contract validation
- Experience or domain knowledge related to card payments or card management
- ISTQB Foundation Level and/or ISTQB Advanced Level Test Analyst certification
Your responsibilities
- Planning and executing integration, system, and usability testing
- Participating in end-to-end and UAT testing activities
- Validating complex backend flows across multiple microservices and integrations
- Collaborating with developers to understand critical paths and ensure product stability
- Strengthening cooperation with other development teams
- Working closely with cross-functional and cross-team stakeholders to improve overall product quality
About the project
We are looking for a Senior Manual Tester to support a team of a global company operating in the electric mobility and energy domain. The project focuses on building and operating a platform that supports public charging services, energy solutions, and e-commerce functionalities across Scandinavian markets (Sweden, Norway, Denmark). The team works on a modern, microservice-based ecosystem enabling large-scale integrations, complex backend flows, and end-to-end customer journeys in the area of electric mobility and energy services.
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
Senior Manual Tester (f/m/x)
I apply to:
Sii Sp. z o.o.
Warszawa, Mokotów
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