Senior Software Engineer (SEO Tech)

Nasze wymagania: Tech Stack: You are proficient in Kotlin or Java and have a solid foundation in microservices and cloud environments (GCP/Azure). Ownership: You feel comfortable interacting with stakeholders and taking full end-to-end ownership—from requirements to post-deployment monitoring. Big Data Ambitions: You want to work with tools like BigQuery and Airflow. Experience with Scala is a significant plus. AI Curiosity (Nice to have): Familiarity with LLM tuning (LoRA, PEFT) or frameworks like LangChain/AutoGen will help you lead our newest initiatives. Language: You are fluent in Polish (C1) and English (min. B2). Note: As our current workflow is linguistically homogeneous, Polish is a must-have for this role. O projekcie: The Chonk Team is the technical powerhouse behind Allegro’s SEO business unit. We are a specialized engineering squad (4 Developers, Project Manager, and Leader) responsible for one of the largest traffic entry points on the Polish internet. We don't just maintain; we innovate. Last year, we launched Allegro Rankings, a product now scaling internationally. Currently, we are embarking on a high-impact mission: building a Market Trend Prediction engine using Large Language Models (LLMs). This is a rare opportunity to shape the architectural foundations of a project that turns AI experiments into production-grade business solutions. Zakres obowiązków: Engineering Excellence: Leading by example through mentorship, high-quality code reviews, and establishing engineering standards. Big Data at Scale: Designing and optimizing systems that handle massive daily request volumes and extract actionable insights from vast datasets. AI Integration: Leading the technical integration of LLMs to drive our predictive capabilities. Cross-team Orchestration: Collaborating with over a dozen teams (Offer, Product, Listing, Category) to manage complex technical dependencies. Oferujemy: Flexible working hours in the hybrid model (4/1) - working hours start between 7:00 a.m. and 10:00 a.m. We also have 30 days of occasional remote work. The salary range for this position depending on the skill set is as follows (contract of employment, tax-deductible cost): 18 850 - 25 900 gross Annual bonus based on your annual performance and company results. Well-located offices (with e.g. fully equipped kitchens, bicycle parking, terraces full of greenery) and excellent work tools (e.g., raised desks, ergonomic chairs, interactive conference rooms). A 16" or 14" MacBook Pro or corresponding Dell with Windows (if you don't like Macs) and all the necessary accessories. 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. A training budget, inter-team tourism (see more here), hackathons, and an internal learning platform where you will find multiple trainings. An additional day off for volunteering, which you can use alone, with a team, or with a larger group of people connected by a common goal. Social events for Allegro people - Spin Kilometers, Family Day, Fat Thursday, Advent of Code, and many other occasions we enjoy.