Responsibilities
- Build and scale high-performance, low-latency search relevance services using Java and Kotlin.
- Deploy ranking models and collaborate with research and data science teams.
- Build automated evaluation pipelines powered by Large Language Models.
- Experiment with generative AI and semantic search features.
- Develop reliable, maintainable solutions and participate in code reviews and knowledge sharing.
- Analyze complex engineering challenges affecting millions of active users.
Requirements
- Professional experience or equivalent background in Java, Kotlin, or Python and a solid foundation in backend engineering and clean architecture.
- Interest in working at the intersection of backend engineering and AI/ML.
- Familiarity with or curiosity about machine learning concepts, data pipelines, Python, Apache Airflow, Google Cloud Platform, LLMs, or semantic search.
- Analytical and problem-solving approach to complex technical challenges.
- English communication skills at least at B2 level.
- Commitment to code quality, reliable solutions, continuous learning, and knowledge sharing.
Benefits
- Flexible working hours in a hybrid 4/1 model, with start times between 7:00 a.m. and 10:00 a.m.
- Up to 30 days of occasional remote work.
- Annual performance and company-results bonus.
- Work in the Warsaw-based team.
- Well-equipped offices and ergonomic work facilities.
- Choice of a 16-inch or 14-inch MacBook Pro or corresponding Dell Windows computer with accessories.
- Cafeteria-plan benefits such as medical, sports, lunch packages, insurance, and purchase vouchers.
- Employer-paid English classes, training budget, hackathons, internal learning platform, and inter-team tourism.
- Additional volunteering day and social events.
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