Senior Java Developer

Salary: 1000-1200 pln/md B2BLocation: elastic hybrid from Gdynia (1-2 days per week from the office) Why choose this offer?Be part of a newly created development team working on a long-term projectOpportunity to shape technical decisions and best practices from the startWork on a scalable, high-performance system with a strong focus on clean architectureGain hands-on experience with cloud technologies and containerization ProjectWe are looking for a Senior Java Developer to join a newly formed development team working for a global leader in HR and workforce solutions. This long-term project focuses on building scalable backend systems for high-demand business operations, integrating modern cloud services, and ensuring top-level reliability and performance.As a Senior Java Developer, you will have the opportunity to shape technical decisions, define best practices, and influence the overall architecture from the very beginning. You will work in an agile environment with a strong emphasis on clean code, maintainability, and performance optimization. What you'll be doingBuilding new application features and modules aligned with business needsContinuously improving existing code to enhance scalability, readability, and performanceDesigning and delivering robust backend components and integrationsWriting well-structured, maintainable, and efficient code in line with best engineering practices Expected competences and knowledge5+ years of professional experience in Java backend developmentStrong proficiency in Java and solid understanding of backend development principlesGood knowledge of PostgreSQL and database optimization techniquesHands-on experience with Hibernate Criteria API for efficient data queriesExperience with Docker for containerization and deploymentIn-depth knowledge of the Spring ecosystem (Spring Boot, Spring Batch)Proven experience in batch processing using Spring Batch Technologies you'll work withJavaSpring (Boot, Batch)HibernateREST APIPostgreSQLAWS (ECS, S3, RDS)Docker Client – why choose this particular client from the Jit portfolio?We have partnered with our Client, a leading HR company with over 60 years of experience and a presence in multiple countries around the world. Our Client provides a wide range of recruitment and job placement services and is dedicated to helping individuals achieve their career goals. In Poland, our Client has been operating for over 20 years and is at the forefront of digitization in the HR services industry. Our team has been building the Time tracking system for our Client since 2019, a complex tool for registering and settling the working time of full-time and temporary employees working under different legal and organizational conditions, supporting on-boarding processes, and integrating with the employee portal and mobile app. As a member of Jit Team, you will have the opportunity to work on a modern, complex enterprise-class system built in modern technologies such as Java and the AWS cloud. With a business-critical operation, the Work Time system settles working time for tens of thousands of employees every month and contributes to our Client's revenue. About Jit TeamThe Human factor of IT - it's not just a slogan, it's 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.