Senior Java Fullstack Developer

🏢 Summary: Senior Full Stack Developer contract supporting a 3–4 year transformation of wholesale credit and lending platforms for a global banking program. The role focuses on modernizing credit models, risk and collateral functions, and data quality, governance, and traceability in a hybrid Kraków-based engineering team. 🗂️ Requirements: Senior-level Java full-stack development experience, Strong PostgreSQL experience, Code review capability, Progressive engineering mindset, High attention to detail, Pragmatic engineering approach, Availability to work from the Kraków office twice weekly, English proficiency for project work 📃 Skills: Java, PostgreSQL 🏢 Description: 🌍Work mode: hybrid: 2x per week in the office in Kraków. ⏰Start: from June. 📝Contract: B2B. ⚙️Recruitment process: technical interview, live coding. ⏳Duration: >12 months contracts. 📕Project language: English. 💼Industry: Banking. 💻Workload: Full time. We are seeking high-performing Senior Full Stack Developers to join our Wholesale Credit & Lending Technology team. This pivotal role is integral to a major 3-4 year transformation program focusing on modernizing core credit and lending technology platforms across global markets. Main Responsibilities: Contribute to the uplift and refresh of wholesale credit and lending models. Support key risk and collateral management functions. Improve data quality, traceability, and governance. Review data sourcing, transformation, and consumption processes. Collaborate within a fast-paced engineering team. Key Requirements: Java Full Stack Development Strong experience with PostgreSQL (Postgres) Progressive engineering mindset Proven code review capability High attention to detail Pragmatic engineering approach Nice to Have: Exposure to Claude AI tooling Experience with Quantexa Other Details: This position requires office attendance 2 times per week (Cracow) and is part of a global-scale technology rollout. The urgency is high due to previous hiring challenges in fulfilling this critical transformation initiative.

🏢 Summary: Senior Java Developer contract for a logistics project, focused on building secure, high-performance backend data-processing services in a microservices architecture. The role uses Java, Confluent Kafka/KStreams, MongoDB Atlas and PostgreSQL, with hybrid work from the Warsaw office 2–3 days per week. 🗂️ Requirements: 10+ years of Java development experience, Strong Confluent Kafka expertise, Strong KStreams expertise, MongoDB Atlas experience, PostgreSQL experience, English proficiency, Polish proficiency 📃 Skills: Java, Kafka, Confluent, KStreams, MongoDB, PostgreSQL, CI/CD, Microservices 🏢 Description: 🌍Work model: 2-3 days a week from the Warsaw office. 💰Rate: B2B - up to 190 zl/h. ⏰Start: ASAP/ 1 month. ⏳Project length: > 12 months + extensions. 📕Project language: English + Polish. 💼 Industry: Logistics. ⚙️Recruitment process: 2 interviews with the client. 🔍Workload: fulltime. Summary: The Senior Java Developer is primarily responsible for designing and developing backend applications while ensuring adherence to high standards of security, performance, and quality. This role focuses on leveraging extensive experience in Java and Kafka to build robust data processing solutions within a microservices architecture. Main Responsibilities: Building, testing, and deploying software using CI/CD pipelines. Creating microservices for data processing, database interactions, and data exposure. Implementing relevant architectural patterns for data handling and web services. Ensuring accurate logging and alert configurations for operational efficiency. Conducting comprehensive testing of software for various performance criteria. Integrating security features, including authentication and authorization controls. Participating in a developer guild to share best practices and technical knowledge. Key Requirements: 10+ years of relevant experience in Java development. Strong expertise in Kafka, particularly with Confluent Kafka and KStreams. Experience with MongoDB Atlas and PostgreSQL as database technologies. Nice to Have: Familiarity with authentication protocols such as OIDC, OAuth2, and SAML. Experience with containerization technologies like Docker. Knowledge of Kubernetes for container orchestration. Experience with the ELK stack for logging, monitoring, and alerting.