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Java Developer Miejsce pracy: Poznań Technologies we use Expected Java Kotlin Spring Boot Kafka RabbitMQ Microservices About the project Salary: - Mid: 600-1000 PLN/MD - Senior: 1000-1300 PLN/MD Work model: Remote, with on-site meetings once a month (Warsaw / Poznań / Kraków) Your responsibilities The project involves the development and evolution of large-scale backend systems built on a modern microservices architecture. The platform processes high volumes of data in near real time and relies heavily on asynchronous communication and event-driven patterns to ensure scalability, resilience, and fault tolerance. The team is responsible for designing, implementing, and maintaining services that support critical business processes. A strong focus is placed on horizontal scalability, high availability, and performance, as the systems operate under significant load and must remain stable and responsive. You will work closely with Product Owners, analysts, and other engineering teams in a cross-functional environment, taking part in architectural discussions and technical decision-making. Our requirements Experience at Mid or Senior Java Developer level Strong knowledge of Java 11 or Kotlin Hands-on experience in building microservices-based systems Very good practical knowledge of Spring Boot and Spring Cloud Experience with messaging systems such as Kafka (preferred) or RabbitMQ Solid understanding of distributed systems architecture and asynchronous communication Experience working with high-throughput, large-scale data processing systems Ability to design applications with horizontal scalability and high availability in mind Technical maturity and independence in decision-making Strong collaboration skills in cross-functional teams Ability to communicate effectively with Product Owners and non-technical stakeholders This is how we organize our work This is how we work at the clients site Development opportunities we offer assistance in preparation to public speeches conferences abroad conferences in Poland development budget external training intracompany training mentoring soft skills training substantive support from technological leaders support of IT events technical knowledge exchange within the company What we offer Work on large-scale systems processing high volumes of data Real impact on system architecture and technical decisions Opportunity to design solutions with high availability and horizontal scalability Collaboration within a mature, cross-functional team Direct communication with Product Owners and non-technical stakeholders Benefits sharing the costs of sports activities private medical care sharing the costs of professional training & courses life insurance integration events corporate sports team corporate library christmas gifts birthday celebration employee referral program opportunity to obtain permits and licenses Jit Team Summer Office Jit Communities Zajęcia j. angielskiego Recruitment stages HR Interview Technical talk Meeting with The Client The Offer Client – why choose this particular client from the Jit portfolio? Our Client dominates the Polish e-commerce arena as the market leader since 1999. With a user base of over 20 million and growing, this well-established platform is at the forefront of e-commerce, constantly striving for growth through market expansion and investment. As a major player in technology, our Client boasts a talented IT team of over 1,000 employees who focus on developing their own cutting-edge technologies. Jit Team has had a successful partnership with our Client since spring 2021, with multiple software development teams dedicated to our Clients platforms. These teams operate autonomously, designing platform components through micro-services. Working with our Client offers a chance to contribute to a solution used by millions on a daily basis and to tackle the challenge of delivering software at a massive scale, where even a single second of delay can have a significant impact. This project provides a unique opportunity to work with state-of-the-art technologies and tools, making it a rare and valuable experience. Jit Team sp. z o.o. The Human factor of IT - its not just a slogan, its a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 700 experienced experts. We create highly specialised teams for clients from all over the world. We offer team members developmental projects, a wide range of benefits and a proprietary professional development programme. Behind our maxim are also charitable and educational activities. We support pupils and students by donating learning equipment. We offer internships to help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We are a Polish company and we share what we have achieved over 15 years of activity. By supporting indigenous initiatives, we ensure the circulation of good energy.