Senior Software Engineer – Backend

Mandatory Skills Strong experience with Java and Spring Boot for building enterprise-grade applications. Basic knowledge of Python Solid understanding of event-driven architectures and Apache Kafka. Experience with cloud platforms, preferably Azure. Familiarity with Kubernetes for container orchestration. Strong knowledge of databases, including PostgreSQL, NoSQL solutions Experience with RESTful API design and microservices architecture. Understanding of software engineering best practices, including CI/CD, Testing, Code review Ability to work with complex distributed systems at scale. Nice-to-Have Skills Experience with Large Language Models (LLMs) and prompt engineering. Knowledge of vector databases and embedding technologies like PGVector. Familiarity with machine learning frameworks and computer vision. Experience with Infrastructure as Code (IaC) using Terraform. Knowledge of the retail or e-commerce domain. Experience with Couchbase or similar NoSQL databases. Understanding of data quality and governance principles. Previous experience building AI-powered applications. Experience working with multi-agent systems. About the role The Product Intelligence Platform is an AI-driven system that revolutionizes how Tesco handles product data at scale. The platform leverages multi-agent AI systems to automate product categorization, enrichment, and matching across a vast number of products on a weekly basis. Built on event-driven architecture using Kafka, the platform processes millions of events monthly through core AI capabilities. A Senior Software Engineer in this team will be responsible for building and maintaining these AI-powered capabilities using Java/Spring Boot and Python, implementing scalable event-driven microservices on Azure Kubernetes Service, and working directly with LLMs to solve complex product intelligence challenges. The role requires someone who can bridge the gap between cutting-edge AI technology, engineering, and practical business applications, contributing to a platform that directly impacts millions of customer interactions weekly. What is in it for you Hybrid working We know life looks a little different for each of us. That’s why at Tesco, we always welcome chats about different flexible working options. Some people are at the start of their careers, some want the freedom to do the things they love. Others are going through life-changing moments like becoming a career, adapting to parenthood, or something else. So, talk to us throughout your application about how we can support.  This role requires you to be based in or near Kraków, as you will spend 60% (3 days) of your week collaborating with colleagues at our office locations or local sites and the rest remotely. Benefits Tesco is a diverse and exciting employer, dedicated to being #aplacetogeton, providing career-defining opportunities to all of our colleagues. If you choose to join our business, we will provide you with (for all): Permanent contract from the go – as a sign of our trust in your abilities MacBook as your tool for work Learning opportunities - certified technical training and learning platforms like Udemy Referral Bonus Sports activities with a personal trainer in the office Benefits for colleagues on employment of contract only: Additional 4 days of paid leave to support your well-being and family life Up to 20% yearly salary bonus – based on both individual and business performance Private healthcare (LuxMed) Cafeteria & Multisport Supporting those, who are not yet eligible for full holiday entitlement, by expanding their pool from 20 to 25 days Relocation Help IP Tax Deductible Costs If that sounds exciting, then we'd love to hear from you. Tesco is committed to celebrating diversity and everyone is welcome at Tesco. As a Disability Confident Employer, we’re committed to providing a fully inclusive and accessible recruitment process, allowing candidates the opportunity to thrive and inform us of any reasonable adjustments they may require. About us Tesco is a leading multinational retailer, with more than 330 000 colleagues.  Our software is used by millions of people across several countries every day. Whether it’s the tills and websites our customers use, or the systems our colleagues and partners use, you’ll play your part in keeping it running like a well-oiled machine. And when a business problem pops up? You and the creative minds in our team will be challenged to solve it.  As Tech Hub we cooperate within the group of Tesco Technology Hubs located in the UK, Poland, Hungary, Czech Republic and India.  What our colleagues like the most at Tesco:   We develop our own products We make an impact; large scale of operation Accountability and respect are given to us We cooperate and support each other There are great colleagues who are divided into small teams here We can develop and learn new things ,[Design and implement microservices for product intelligence capabilities., Utilize technologies including: Spring Boot, Python, Apache Kafka, PostgreSQL with PGVector for embeddings, Develop and optimize multi-agent systems., Build event-driven architectures for high-volume data processing., Implement product matching algorithms using: Text similarity techniques, Image similarity techniques, Ensure system scalability and reliability to process over 1 million events per week., Collaborate with product managers and data scientists to translate business requirements into technical solutions., Maintain infrastructure as code using Terraform on the Azure cloud platform., Participate in architectural decisions to expand the platform’s AI capabilities., Mentor junior team members and support engineering excellence standards., Integrate with various Tesco systems, including both internal and external platforms.] Requirements: Java, Spring, Cloud, Kubernetes, Kafka, Microservices, Python, LLM, Terraform Tools: . Additionally: Sport subscription, Private healthcare, International projects, Bike parking, Playroom, Shower, Free parking, Modern office.