Responsibilities
- Build and maintain automated tests for backend services and APIs.
- Perform manual API and backend testing to understand services before automating them.
- Test reliability, performance, data integrity, service contracts, and end-to-end behavior.
- Design test cases, use assertions and test data, and apply appropriate setup and teardown practices.
- Identify regressions and write clear bug reports.
- Collaborate through Git branches, pull requests, and code reviews.
- Consider complete system behavior, data flow, service-to-service communication, and asynchronous messaging.
- Use AI coding agents to assist with writing and reviewing tests while critically verifying their output.
- Contribute to a team environment focused on knowledge sharing and continuous improvement.
Requirements
- Practical experience or strong foundational knowledge in at least one of Java, Kotlin, Python, or JavaScript/TypeScript.
- Knowledge of at least one automated testing framework, such as JUnit, TestNG, Kotest, or pytest.
- Understanding of maintainable automated tests, including assertions, test data, and setup/teardown.
- Understanding of HTTP and REST APIs, including methods, status codes, headers, and JSON.
- Ability to test APIs using tools such as Postman or libraries such as REST Assured.
- Basic understanding of SQL databases and backend data processing and persistence.
- Knowledge of software testing fundamentals, test levels, test design techniques, equivalence partitioning, boundary values, and bug reporting.
- Comfort with Git and code repository workflows, including branches, pull requests, and code review.
- English and Polish language proficiency at B2 level or higher.
- Experience with microservices environments, performance testing, contract testing, or end-to-end testing is a plus.
- Experience with AI coding agents such as Codex, Claude Code, OpenCode, or GitHub Copilot is a plus.
- Experience with Gatling, k6, Pact, or Playwright is a plus.
Benefits
- Flexible working hours in a hybrid 4/1 model, with start times between 7:00 a.m. and 10:00 a.m., plus 30 days of occasional remote work.
- The team is based in Warsaw.
- Annual bonus based on individual performance and company results.
- 16-inch or 14-inch MacBook Pro or an equivalent Dell Windows computer with necessary accessories.
- Cafeteria-plan fringe benefits such as medical, sports, lunch packages, insurance, and purchase vouchers.
- Paid English classes related to the job.
- Training budget, inter-team tourism, hackathons, and access to an internal learning platform.
- An additional volunteering day off and social events.
- Well-equipped offices with kitchens, bicycle parking, terraces, ergonomic furniture, and interactive conference rooms.
Tech Stack
Categories
About Allegro
Allegro is the most popular shopping platform in Poland and the largest e-commerce platform of European origin. We operate a marketplace model which means that customers can buy whatever they need from over 135,000 merchants, who can list an unlimited number of offers on our platform. We offer products in all key categories including Automotive, Fashion, Home&Garden, Electronics, Books and Collectibles, Kids or Health and Beauty. Each month, 22 million customers visit our platform, which is equivalent to almost 80% of all Internet users in Poland. They can choose from over 250m offers at the most attractive prices with maximum convenience including fast and free deliveries under the Allegro Smart! programme, modern financial services (Allegro Pay), as well as Poland’s widest 50k pickup points network. In 2019 we celebrated the 20th anniversary of Allegro in Poland. For over two decades, we have been serving consumers and promoting the idea of entrepreneurship in one of the most innovative areas of the economy. We have come a long way from an auction site for private individuals looking for a modern alternative to their local flea market. Today, we are a vibrant international marketplace platform for professional sellers and a must-have sales channel for top international brands and retailers. We currently employ more than 7000 employees and each of us ranks among the best experts in their field. Whether it’s in Technology, Customer Experience, Commerce, Delivery Experience or many other teams, we’re all proud to say that Allegro employs the best people on the market and all of us are ready to admit that it’s #goodtobehere. ESG Report 2022: https://allegro.pl/zobacz/esg Career at Allegro: https://jobs.allegro.eu/ Allegro Tech: https://allegro.tech/ Brand Journal: magazyn.allegro.pl Support & help: pomoc.allegro.pl // facebook.com/allegro