Java Developer

Contract: B2BRate: Mid: 110 - 130 PLN/h net+VAT, Senior: 120-140 PLN/h net+VATLocation: Remote within PolandProject: Transformational Banking as a Service (BaaS) initiatives for a leading banking platformKey TechnologiesJavaSpring BootKafka, Pub/SubSQLGCPBPMN 2.0 (Flowable/Camunda)Project OverviewJoin our Rite NRG team as a Java Developer and work on a long-term project for a bank.You'll take part in transformational projects delivered within our Banking as a Service (BaaS) model.You will build and maintain high-quality backend solutions and business workflows aligned with user needs and business goals.Our Cloud Native approach is based on Google Cloud Platform (GCP) and cutting-edge technologies. You’ll work closely with engineers and stakeholders, contribute to architecture discussions, and help continuously improve development standards across the platform.ResponsibilitiesDesign and develop scalable backend applications using Java (Core Java).Implement and maintain services based on Spring / Spring Boot and Hibernate.Build and integrate REST APIs, Web Services, and Microservices-based solutions.Design and implement BPMN 2.0 workflows (Flowable / Camunda / Activiti / jBPM, any is a strong plus).Integrate BPM systems with internal and external applications.Participate in code reviews, provide constructive feedback, and support best practices.Troubleshoot complex issues, fix bugs, and optimize application performance.Collaborate on architecture planning and technical decision-making.Mentor and support less experienced team members.Maintain clear technical documentation (project and code-level).Requirements4+ years of experience in Java development, especially Java-based web applications.Hands-on experience with Spring, Spring Boot, REST API, Microservices, Web Services.Practical knowledge of Hibernate.Strong understanding of SQL and relational databases.Experience with build tools such as Maven.Good knowledge of message queues/event streaming: Kafka, Pub/Sub.Understanding of cloud solutions (GCP preferred, Azure/AWS acceptable).Practical experience with Git and modern development workflows.Strong analytical mindset, attention to detail, and proactive attitude.Collaborative approach and willingness to learn and grow beyond your current domain.Fluency in Polish and an advanced level of English (B2/C1). Nice to have:Experience designing workflows using BPMN 2.0 and BPM engines (Flowable / Camunda / Activiti / jBPM).Understanding of cloud orchestration tools such as Docker, Kubernetes, Helm (we will support your learning if you don’t have hands-on experience yet).Experience with multithreaded programming and distributed systems.Knowledge of application monitoring and observability (e.g., ELK stack or similar tools). Why join us?Rite NRG is a vibrant outsourcing technology company driven by the Right People. We are dedicated to empowering businesses through innovative software solutions. We focus on building strong partnerships and providing top-notch software solutions that drive real business growth. Our business model revolves around collaboration and delivering impactful results for our clients.Join us, and be part of a team where great minds, Right Energy, and strong partnerships come together to shape the future of technology!Stable, long-term, full-time collaboration.Remote work within Poland and flexible working hours.High engineering culture with a focus on growth and learning.Multinational teams.Benefits: Private medical care, Multisport card, and workation (work for a week from Barcelona or elsewhere).