June 18, 2026
QA Engineer
Mid • Remote
13,000 - 16,000 PLN/mo
Warsaw, Poland
Salary ranges:
13,000-16,000 PLN on B2B
Purpose of Role
We are looking for a Mid QA Engineer to join our QA team and support quality across data-driven and web applications.
In this role, you will initially focus on database test analysis and development, working with tests written in Python and validating data using SQL. Over time, the role will also expand into web application testing, including Playwright/TypeScript automation and manual feature testing.
This is a good fit for someone who enjoys technical QA work, understands testing fundamentals, is comfortable working with data, and can use AI tools effectively in day-to-day engineering tasks.
What you will be doing
Analysing, maintaining and extending automated database tests written in Python
Verifying data correctness using SQL and investigating data-related issues
Supporting test coverage for data processing and database-related logic
Creating and maintaining automated tests, initially focused on DB tests and later also E2E/UI tests
Performing manual feature, regression and UI testing for web applications
Supporting cross-browser and cross-application testing
Reporting, tracking and verifying bugs in Jira
Supporting releases, documentation and QA feedback loops
Collaborating closely with developers, QA engineers, product and data-focused teams
Using AI tools to support test analysis, test creation, debugging and day-to-day QA work
We are looking for:
2+ years of experience in QA, including manual and/or automated testing
Experience with test automationGood understanding of testing concepts, test design and defect reporting
Basic to intermediate Python skills, or willingness to work with Python-based test automation
Practical SQL knowledge and experience working with relational databases
Ability to analyse data, investigate inconsistencies and reason about expected results
Strong logical and analytical thinking skills
Experience with UI and/or web application testing
Strong communication and collaboration skills
English at B2 level or higher
It would be nice to have
Experience with Playwright and TypeScript
Experience with CI/CD and GitHub/GitLab pipelines
Experience with database testing or data quality testing
Experience working with cross-functional engineering teams
Experience testing AI-powered features or using AI tools in QA workflows
Basic understanding of cloud-based or containerised environments
Tech stack
You do not need to know all of these technologies from day one, but these are the tools and technologies you may work with:
Python
SQL
PostgreSQL, BigQuery
Playwright, TypeScript
JavaScript
React, Node.js, Express
Docker, Kubernetes, GCP
About Us
Opensignal is the leading global provider of independent insight and data into network experience and market performance. Our user-centric approach allows communication providers to constantly improve their network and maximise commercial performance. Leading analysts, investors and financial institutions place a high value on our independent analysis, and we are regular contributors to their reports.
Real network experience is our focus, and ultimately that is what influences customer choice. Our mission is to advance connectivity for all. Here at Opensignal, the team is leading the industry in enabling operators to link their network experience and market performance in a way that has never before been possible.
With offices in Warsaw, London, Boston and Victoria, British Columbia, we are truly global, with employees working across four continents and representing over 25 nationalities. We are an equal opportunity employer dedicated to building an inclusive and diverse workforce.
Benefits
We believe we are stronger when we not only celebrate our many differences, values and voices, but include them in everyday practice. Having a diverse and inclusive culture is essential, which is why we offer a flexible approach to work-life balance, operating in a remote-hybrid way.
We also offer an attractive range of additional benefits, including:
95% remote work - the team meets in the Warsaw office once a month
Warsaw office in the Wola area
Kitchen and free coffee
Comprehensive private family healthcare package
Multisport Plus Card
Half-day Fridays
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Senior QA Automation Engineer
Senior
Hybrid
Warsaw, Poland
100 - 137 PLN/hr
🏢 Summary: Hybrid Senior QA Automation Engineer role focused on ensuring quality of payment-related web and mobile applications within a cross-functional engineering environment. The position emphasizes building and maintaining automated test coverage across backend, web, and mobile platforms, with strong collaboration with developers. The engineer will drive reliable, scalable, and accessible solutions through comprehensive testing and release support. 🗂️ Requirements: 6+ years of experience in manual and automated testing, Experience testing backend services and frontend web applications, Strong hands-on experience with automation frameworks (Cypress, Playwright, Selenium), Minimum 3 years of mobile application testing (iOS, Android), Experience writing Cucumber API tests, Practical experience with Postman, Bruno, qTest, BrowserStack, Experience in functional, regression, integration, and reliability testing, Knowledge of accessibility testing and WCAG standards, Experience building and maintaining automation frameworks 📃 Skills: Cypress, Playwright, Selenium, Cucumber, Postman, Bruno, qTest, BrowserStack, iOS, Android, WCAG, API, Backend, Frontend 🏢 Description: Senior QA Automation Engineer Salary: 800-1100 PLN/day on B2B Work model: hybrid from Gdynia / Gdańsk / Warszawa (3 days per week from the office) Why choose this offer? You can expect a flexible work organization The international work environment will give you the opportunity to interact with the English language on a daily basis Scandinavian organizational culture will provide you with work-life balance, you will gain time for additional training The Jit community will bring you a nice time during regular integration meetings Project The project involves payment‑related web and mobile applications developed in a cross‑functional engineering environment , where quality is built into the product from the start. QA will work closely with developers to ensure reliable, scalable, and accessible solutions across backend services, web, and mobile platforms. Responsibilities you'll have Validate new features and changes from a quality and risk perspective Contribute to and evolve automated test coverage across the product Work closely with developers to ensure testable and reliable solutions Detect, document, and follow up on defects and quality gaps Support releases by ensuring stability and confidence in delivered changes Apply accessibility checks as part of regular testing activities Expected competences and knowledge 6+ years of experience in manual and automated testing of Backend services and Frontend web applications Strong hands-on experience with test automation frameworks such as Cypress, Playwright, Selenium Mobile testing experience (iOS & Android) with 3+ years of hands-on work in mobile application testing Experience writing Cucumber API tests Practical experience with Postman, Bruno, qTest, BrowserStack Solid background in functional, regression, integration, and reliability testing Accessibility testing knowledge , including WCAG standards Experience in building and maintaining automation frameworks Client – why choose this particular client from the Jit portfolio? Jit Team has had an over-decade-long relationship with the leading financial group in the Nordic countries, and we are privileged to be our client's premier partner in Poland. At present, over 200 Jit personnel are engaged in the completion of more than 60 projects for this Norwegian major provider of financial services with a global presence and a strong focus on modern technology. Our customer's work atmosphere is epitomized by the Scandinavian culture , which is conducive to people who place emphasis on work-life balance and feedback culture . Furthermore, all projects are executed in international teams, giving constant exposure to the English language. About Jit Team The Human Factor of IT - it’s not just a slogan, it’s a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 770 experienced experts , to whom we offer developmental projects, a wide range of benefits, and a proprietary professional development programme. Together with clients from around the world, we create innovative IT solutions delivered by highly specialised and efficient teams. Behind our maxim are also charitable and educational activities. We support schools, universities, and educational institutions by conducting workshops, running educational projects, sponsoring events, and donating learning equipment. We offer internships that help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We also support numerous charitable organisations helping people in need, children, and the elderly. We are a Polish company and we share what we have achieved over more than 15 years of activity. By supporting local initiatives, we contribute to the circulation of good energy.