Technologies-expected : Python Java Kotlin about-project : We are seeking a passionate Software Engineer to join the newly forming A/B Testing Platform team in the Data Science Hub where we apply analytical techniques, mathematics, and machine learning to solve a wide range of business problems. About the A/B Testing Platform team The A/B Testing Platform team is a multidisciplinary group of product analysts, software engineers, and data engineers. Our mission is to strategically enhance our A/B testing platform, a critical tool that empowers data-driven decision-making regarding the rollout of new features by assessing the potential impact of these features through user behavior analysis. Through tasks performed, the team plays a pivotal role in shaping the overall user experience on Allegro, one of the worlds largest e Commerce platforms. responsibilities : Independently designing and delivering complex, high-priority tasks. Designing, developing, testing, and maintaining high-quality code for the technical platform, including backend services, APIs, automation scripts and frontend. Debugging and resolving software defects and issues. Supporting other team members by providing knowledge sharing and architectural design of the system. Staying up-to-date with emerging technologies and industry best practices. Participating in code reviews and providing constructive feedback to peers. Contributing to the continuous improvement of development processes and methodologies. Collaborating with product managers, UX designers and fellow engineers to gather and refine requirements. Addressing and encouraging the team to work actively to reduce technical debt. requirements-expected : We are looking for people who Graduated with a degree in computer science, mathematics, engineering or other relevant field Are proficient in Java Have a basic understanding of Python Know English at min. B2 level Have proven experience as a Software Engineer or in a similar role Think outside the box and have a broad perspective on their work Want to be proud of the code they write. Are open to feedback and are willing to share their knowledge during code reviews Can search for efficient solutions to meet users requirements Are eager to continuously develop skills and update knowledge Have problem-solving skills Are fast learners offered : A hybrid work model that you will agree on with your leader and the team. We have a well-located office (with fully equipped kitchens and bicycle parking facilities) and excellent working tools (height-adjustable desks, interactive conference rooms). Annual bonus up to 10% of the annual salary gross (depending on your annual assessment and the company’s results). A wide selection of fringe benefits in a cafeteria plan – you choose what you like (e.g., medical, sports or lunch packages, insurance, purchase vouchers). English classes that we pay for are related to the specific nature of your job. 16" or 14" Mac Book Pro with M1 processor and 32 GB RAM or a corresponding Dell with Windows (if you don’t like Macs) and other gadgets that you may need. Working in a team you can always count on — we have on board top-class specialists and experts in their areas of expertise. A high degree of autonomy in terms of organizing your team’s work; we encourage you to develop continuously and try out new things. Hackathons, team tourism, training budget and an internal educational platform, Mind Up (including training courses on work organization, means of communication, motivation to work and various technologies and subject-matter issues). benefits : sharing the costs of sports activities private medical care sharing the costs of foreign language classes sharing the costs of professional training & courses life insurance flexible working time integration events no dress code leisure zone extra social benefits