Calypso Java Backend Engineer | Spring & Kafka

4901 Accenture Services Sp.zoo Company; Warszawa; Hybrid; PLN 170,000 - 230,000; Full time

Benefits offered by this job

Permanent employment contract

Private medical care

Life insurance

Worksmile / Multisport access

Job summary

Accenture is seeking a Java Backend Developer to design, develop, and maintain backend services using Java 17+, Spring Framework, and Spring Boot 3.x. You will work with Nasdaq Calypso to support financial systems and integrate messaging platforms like Kafka and ActiveMQ/JMS.

The role allows a flexible mix of remote, onsite, or in-office work to fit project needs while fostering collaboration with global teams and clients.

Qualifications

• 3+ years of commercial experience as a Java Backend Developer
• Experience with Nasdaq Calypso software
• Strong knowledge of Java 17+, Spring Framework, and Spring Boot 3.x
• Experience with messaging platforms such as ActiveMQ/JMS, Kafka, or RabbitMQ
• Experience with SQL Developer
• Experience in writing tests (unit, integration, functional) using JUnit or similar libraries
• Understanding of secure coding practices and common application vulnerabilities
• Solid knowledge of object-oriented programming, design patterns, and clean code principles
• Understanding of application observability concepts, including logging and metrics
• Good written and spoken English (B2+)
• Ownership mindset, proactive attitude, and strong communication skills

Responsibilities

• Design, develop, and maintain backend services using Java 17+, Spring Framework, and Spring Boot 3.x
• Work with Nasdaq Calypso platform to support and enhance financial systems
• Integrate messaging systems such as Kafka, JMS/ActiveMQ, or RabbitMQ
• Develop and optimize database queries using SQL Developer
• Implement testing strategies (unit, integration, and functional) using JUnit and related tools
• Apply secure coding practices and contribute to improving application reliability and performance
• Collaborate with cross-functional teams to deliver high-quality, maintainable solutions based on clean code and design patterns
• Flexibility: mix of remote, onsite, or office work depending on project circumstances

Skills

Java

Spring

Backend design

Unit testing

Security practices

English (B2+)

Tools

Nasdaq Calypso

ActiveMQ/JMS

Kafka

RabbitMQ

SQL Developer

JUnit

Docker

Kubernetes

Git

Job description

Accenture is seeking a Java Backend Developer to design, develop, and maintain backend services using Java 17+, Spring Framework, and Spring Boot 3.x. You will work with Nasdaq Calypso to support financial systems and integrate messaging platforms like Kafka and ActiveMQ/JMS.

The role allows a flexible mix of remote, onsite, or in-office work to fit project needs while fostering collaboration with global teams and clients.