Responsibilities
- Build and maintain automated tests for Allegro services and major-traffic campaigns.
- Perform manual API and backend testing to understand services before automating them.
- Identify regressions and improve service reliability, performance, and data integrity.
- Write maintainable tests using appropriate assertions, test data, and setup/teardown practices.
- Test HTTP and REST APIs and investigate backend data flows and persistence.
- Create clear bug reports and collaborate with engineers through code review and feedback.
- Consider service-to-service communication, contracts, asynchronous messaging, and whole-system data flow.
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 assertions, test data, setup/teardown, and maintainable test design.
- Understanding of HTTP, REST APIs, methods, status codes, headers, and JSON, with experience using Postman or REST Assured.
- Basic understanding of SQL databases and backend data processing and persistence.
- Knowledge of software testing fundamentals, including test levels, test design techniques, equivalence partitioning, and boundary values.
- Comfort with Git, branches, pull requests, and code review.
- Strong attention to detail and ability to reason about complete systems and data flows.
- Good team communication skills, openness to feedback, knowledge sharing, and customer-oriented thinking.
- English and Polish proficiency at B2 level or higher.
- Experience with microservices, service contracts, asynchronous messaging, performance testing, contract testing, or end-to-end testing is a plus.
- Experience with Gatling, k6, Pact, Playwright, or AI coding agents such as Codex, Claude Code, OpenCode, or GitHub Copilot 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., and up to 30 days of occasional remote work.
- The team is based in Warsaw.
- Annual performance- and company-results-based bonus.
- MacBook Pro or corresponding Dell Windows laptop with necessary accessories.
- Cafeteria benefits including medical, sports, lunch, insurance, and purchase-voucher packages.
- Paid English classes related to the nature of the job.
- Training budget, inter-team tourism, hackathons, and access to an internal learning platform.
- Additional day off for volunteering.
- Well-equipped offices with kitchens, bicycle parking, terraces, raised desks, ergonomic chairs, and interactive conference rooms.
- Social events and opportunities to participate in Allegro’s technical communities and conferences.
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