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Builds and maintains Java/Spring Boot applications for tax, account management, and investment processing, including upgrades to Java 17+ and Spring Boot 3.x.
Senior Java developer designs and implements enterprise solutions in Java, mentors junior devs, and works in Scrum teams for external clients.
Senior Java developer building a mission-critical aviation crew-management platform using Java/J2EE, Spring, Hibernate, and Oracle in a hybrid Kraków office.
Build and maintain microservices on Kubernetes using Java, Spring Boot, and Camunda; model BPMN processes; apply hexagonal architecture; and leverage AI tools to support development.
Senior Java developer building event-driven microservices for a bank using Spring, Kafka, MongoDB, and Docker in a hybrid Warsaw office role.
Builds and maintains Java-based components for an investor onboarding system using Spring, REST/SOAP web services, and relational databases.
Java developer adapting legacy payment apps to ISO20022; builds Spring Boot microservices with Kafka, MongoDB, and REST APIs in a distributed team.
Builds and maintains Java-based microservices and Angular frontends for a public-sector project, using Spring Boot, Docker, and CI/CD pipelines.
Senior Java developer building insurance policy and claims systems using Java, Spring, and EIS, integrating with third-party services via SOAP/REST/JMS.
Builds and maintains high-frequency trading platform modules in Java with Spring Boot, optimizing for low-latency performance and collaborating with traders and engineers.
Build and maintain backend systems in Java 11+ and Java EE, integrating SAP with manufacturing controls and ensuring code quality through reviews and testing.
Build and maintain Java-based FX Options pricing platforms using core Java, Spring Boot, and Oracle, while collaborating in an Agile Scrum team.
Build and maintain scalable Java microservices using Spring Boot for international and local clients, collaborating with cross-functional teams and contributing to full-stack solutions.
Builds and maintains Java-based backend services using Spring, micro-services, and relational databases, with optional minor frontend tweaks.
Builds low-latency electronic trading systems in Java, using Spring, multithreading, and GC tuning to support global e-commerce platforms for a fintech firm.
Builds and maintains Java backend services for financial systems using Spring Boot, integrates messaging platforms, and writes optimized SQL and tests.
Develop Java-based ISTAR software for Canadian Army systems, designing APIs, data pipelines, and desktop clients that integrate sensor data and command-and-control subsystems.
Develops Java-based desktop and enterprise software for military ISTAR systems, integrating sensor data pipelines and APIs in an Agile team.
Build and deploy Java-based AI solutions using Spring Boot, microservices, and Kafka for enterprise clients, while collaborating in Agile teams.
Build and maintain Java-based game systems and web services for a studio creating multiplayer online games, using microservices, APIs, and cloud technologies.
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