Senior Java Developer: Cloud-Native Microservices & Camunda

Billennium; Warszawa; Híbrido; PLN 200.000 - 320.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Udemy for Business

Worksmile platform

Remote/hybrid options

International collaboration

Descripción de la vacante

Billennium is seeking a Senior Java Developer to support the development and optimization of Camunda BPMN-based business processes within the Digital Product Center. You will work on end-to-end banking solutions, building scalable microservices and secure REST integrations with internal and external systems.

Join a dynamic, agile team focusing on cloud-native platforms with Docker, Kubernetes, and Spring Cloud, while collaborating with product owners, analysts and DevOps engineers across

Formación

• 5 years of hands-on experience developing Spring Boot applications.
• Proficiency in Java 11 and Spring Boot.
• Familiarity with Maven and HTTP protocol.
• Solid understanding of PKI, TLS, and JWT-based auth.
• Experience with relational databases (PostgreSQL, MySQL).
• Experience with GitLab, Docker, Jenkins, or CI/CD toolchains.

Responsabilidades

• Design and implement Camunda BPMN business workflows.
• Develop and maintain Spring Boot microservices.
• Build scalable REST APIs and integrations.
• Model data using PostgreSQL/MySQL and NoSQL (MongoDB/Redis).
• Implement security using OAuth2, JWT, and best practices.
• Develop event-driven integrations with Kafka and RabbitMQ.
• Write unit and integration tests with JUnit 5, Mockito, AssertJ.
• Contribute to code reviews, static analysis, and development standards.
• Support CI/CD and deployment automation with Jenkins, GitHub Actions, or GitLab CI.
• Collaborate with Product Owners, Analysts, Architects, and DevOps in an Agile environment.
• Contribute to cloud-native platform using Docker, Kubernetes, and Spring Cloud.

Conocimientos

Java 11

Spring Boot

REST APIs

Maven

PostgreSQL

MySQL

NoSQL

OAuth2

JWT

Apache Kafka

RabbitMQ

JUnit 5

Mockito

CI/CD

Jenkins

GitHub Actions

GitLab CI

Docker

Kubernetes

Spring Cloud

Security

CI/CD tooling

Herramientas

Docker

Kubernetes

IntelliJ IDEA

Jenkins

Descripción del empleo

Billennium is seeking a Senior Java Developer to support the development and optimization of Camunda BPMN-based business processes within the Digital Product Center. You will work on end-to-end banking solutions, building scalable microservices and secure REST integrations with internal and external systems.

Join a dynamic, agile team focusing on cloud-native platforms with Docker, Kubernetes, and Spring Cloud, while collaborating with product owners, analysts and DevOps engineers across