Software Engineer 2 Java Kotlin

Software Engineer 2 (Java/Kotlin) - Traffic Optimization/GEO Location: Kraków, PL, 31-503 Company: Allegro sp. z o.o. Team: Technology Contract Type: Employee About the job Join our SEO Tech team at the forefront of search innovation - where classic SEO meets the next generation of Generative Engine Optimization (GEO).We're looking for a Software Engineer to join us to keep momentum on our most strategic initiatives planned for late 2025 and beyond. This role offers the rare opportunity to shape how millions of users discover Allegro offers across emerging AI-powered search platforms - ChatGPT and other AI agents. You'll play a key part in enhancing our visibility, scalability and long-term competitive edge, working on high-impact projects that directly influence business results. You'll be joining a small, highly skilled team driving big-scale projects, handling massive bot traffic from major search engines and future-proofing Allegro's platform for the AI era. We work closely with the business, and our developers have a real impact on the final product - not only from a technical perspective but also when it comes to shaping business requirements. Important things for you: Flexible working hours in an office first model (4/1) that depend on you and your team. Starting later or finishing earlier? No problem Work hours keep pace with our lifestyles and can start between 7 a.m. and 10 a.m. The salary range for this position depending on the skill set is as follows (contract of employment, tax-deductible cost): PLN 14 200 - 20 200 Annual bonus (depending on your annual assessment and the company's results) Our team is based in Cracow. This is a temporary position, offering the opportunity to make a strong impact in a key strategic area. Your main responsibilities: Development of the Search Quality Index (SQI) - an AI-optimized engine ensuring Allegro's most attractive offers rank higher in search and generative AI results. Automate SEO processes using GenAI and Machine Learning, boosting efficiency and scalability across multiple markets. Support the transition from SEO to GEO, helping Allegro establish a strong presence across AI-powered discovery platforms (ChatGPT, Gemini, etc.) through structured metadata, schema.org markup and official plugins. Collaborate closely with SEO specialists, providing expert technical input to design, implement and evolve our GEO strategy. Safeguard key technical knowledge within the core team and ensure smooth continuity of work on strategic projects. Your skills and experience Strong programming experience in Java or Kotlin (no prior experience with Kotlin? That's okay - if you're open to learning, we'll help you get there:) Experience with Spring and ELK Stack (Elasticsearch, Logstash, Kibana). Hands-on experience with MongoDB or other NoSQL databases. Working knowledge of React.js (enough to contribute to and extend frontend components). Solid understanding of RESTful APIs and microservices architecture. Experience with scalable, high-traffic systems or distributed environments. Analytical mindset with a focus on performance, maintainability and clean code. Strong communication and collaboration skills - you'll work closely with SEO and AI experts. English proficiency sufficient for daily technical communication (B2). Nice to have: Interest or experience in AI/ML integration, search optimization or GEO (Generative Engine Optimization). Experience with Google Cloud (BigQuery, Dataproc, Workflows) Knowledge of SEO and SEO-friendly architecture. What we offer: We have well-located offices (with fully equipped kitchens and bicycle parking facilities) and excellent working tools (height-adjustable desks, interactive conference rooms). Annual bonus 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 related to the specific nature of your job. 16" or 14" MacBook Pro 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, MindUp (including training courses on work organization, means of communications, motivation to work and various technologies and subject-matter issues). If you want to learn more, check it out This may also interest you: Allegro Tech Podcast → https://podcast.allegro.tech/ Send in your CV and see why it is goodtobehere