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Build and maintain a high-end microservice platform in Java/Spring Boot with React frontends for trading and credit applications, handling order management and quoting.
Freelance Java developer trains and evaluates AI models by writing, reviewing, and testing code, annotating data, and benchmarking LLM outputs in sandboxed environments.
Build and maintain full-stack Java/Spring and Angular applications, design REST APIs, and optimize cloud-native microservices with DevOps tooling like Docker, Kubernetes, and Jenkins.
Builds a new Java 17–21/Spring Boot application on GCP for corporate financing workflows (factoring, loans) and integrates it with bank systems.
Build and maintain Java-based systems that manage global data center infrastructure, collaborating with senior engineers to develop scalable, high-performance platforms.
Builds and maintains a Java 21+/Spring Boot 3 investment-domain service for a banking client, using PostgreSQL, Kafka, RabbitMQ, and testing with JUnit 5/Mockito.
Intern full-stack developer builds Angular UIs and Java/Spring REST APIs, fixes defects, and learns Guidewire/Gosu while supporting CI/CD pipelines.
Build and maintain full-stack apps using Java/Spring for backend APIs and Angular for responsive UIs, collaborating with DevOps on CI/CD and cloud deployments.
Builds and maintains Java-based enterprise applications using Spring, microservices, and cloud tools for finance, e-commerce, or healthcare clients.
Build and maintain scalable Java microservices for a telecom retailer’s backend, collaborating with German-speaking stakeholders and deploying to Kubernetes.
Lead a team to design, build, and ship secure, scalable enterprise apps using Node.js/Python/Java, REST APIs, and cloud-native tools on Azure.
Build and maintain Java-based microservices and Angular frontends for XTB’s client-care ecosystem, including AI chat, AML systems, and client databases.
Lead Java developer mentors a small team, designs architecture, and builds smart-farming software using Java, Spring, and SQL.
Backend Java developer building and maintaining web modules for a large-scale iGaming platform using Spring, Hibernate, and PostgreSQL.
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.
Build and maintain scalable Java microservices on GCP, writing clean code, optimizing performance, and collaborating with DevOps on cloud infrastructure.
Builds desktop and server apps in Java/JavaFX and Spring Boot for a national medical emergency command system, integrating databases and APIs.
Senior Java developer building and maintaining high-availability tax systems for the public sector using Java, Spring, REST APIs, and containerized environments.
Build and maintain enterprise-grade backend microservices for a global investment bank using Java, Spring Boot, Kafka, and Kubernetes, ensuring secure, scalable, and resilient financial workflows.
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