Role OverviewThe Junior Java Developer contributes to the development and maintenance of high-performance trading software under the supervision of senior Developers. The role focuses on learning, accountability, and collaboration to deliver efficient and reliable backend components, UIs and APIs that support the companys trading solutions for banks, brokers, and funds. With a strong commitment to product quality, client success, and continuous improvement, the Junior Java Developer works with autonomy and team spirit to meet deadlines and support the companys growth. Summary of Key Responsibilities

• Develop, test, and maintain Java-based backend services, UIs and APIs for trading systems.
• Ensure accountability, quality, and efficiency in assigned development tasks.
• Collaborate with senior developers, analysts, QA, and DevOps to support project delivery.
• Contribute to product scalability, reliability, and client success.
• Learn and apply best practices in software engineering and trading technology.
• Provide regular updates and report activities to management.

 Detailed Responsibilities

• Software Development and Maintenance

• Contribute to the design, development, and maintenance of efficient, and testable Java code using Spring, Spring Boot, or equivalent frameworks to develop backend components, UIs, APIs, and data integration layers.
• Apply good coding practices, version control, and documentation standards.
• Participate in code reviews and apply feedback to improve product quality and efficiency.
• Contribute to maintaining product quality and consistency across releases.

 

• Quality, Accountability, Efficiency and Compliance

• Design, implement and execute automated unit tests to conduct unit, integration, and performance testing to guarantee product quality and stability.
• Proactively assist in debugging, troubleshooting, and resolving software issues.
• Follow internal development and delivery processes with attention to efficiency, deadlines, and compliance.
• Maintain confidentiality of proprietary code, client data, and internal methodologies.
• Write, edit, and maintain technical documentation for trading software, and ensure that all documents are accurate, consistent, and aligned with the latest product versions and releases.
• Review and update existing documentation to maintain quality, relevance, and compliance with standards.
• Deliver tasks within agreed deadlines, maintaining high standards of efficiency and professionalism.
• Provide regular updates and report activities to management.

 

• Collaboration and Client Success

• Work closely with senior Developers, Business Analysts, Quality Assurance Specialists to understand technical and functional requirements.
• Demonstrate strong communication and teamwork, fostering a culture of accountability and professionalism.
• Participate actively in the teams efforts to achieve shared goals and continuous product improvement.
• Support the development of reliable, scalable solutions that contribute to client satisfaction and product success.

 

• Learning, Growth, and Contribution

• Commit to continuous professional growth through on-the-job learning and self-study.
• Acquire a deep understanding of trading workflows, financial markets, and real-time system requirements.
• Stay informed about new technologies, best practices, and development tools.
• Show initiative, curiosity, and dedication to becoming a fully autonomous software engineer.

 Profile & Qualifications

• BSC in Computer Science, Engineering or relevant field.
• Good knowledge of Java 1.8 and object-oriented programming principles.
• Familiarity with Spring, Spring Boot or similar frameworks, JPA/Hibernate, REST APIs, and relational databases (SQL).
• Experience with multi-threaded, high-performance, and network programming (TCP sockets).
• Basic knowledge of Linux environments.
• Familiarity with Agile methodologies, Atlassian suite (Bitbucket, Jira, and Confluence) and software development processes.
• Familiarity with Version Control Systems and CI/CD tools (e.g. Git, Jenkins). Autonomy in using debugging and profiling tools.
• Knowledge of messaging systems (Kafka, RabbitMQ) and databases (SQL, NoSQL).
• Familiarity with containerization and orchestration tools (e.g. Docker, Kubernetes).
• Familiarity with serialization frameworks.
• Experience with financial systems, trading workflows, or market data preferred.
• Strong sense of accountability, responsibility, and commitment to deadlines.
• Team-oriented mindset, with efficiency and product quality as guiding principles.
• Excellent problem-solving and analytical skills, with attention to detail.
• Willingness to learn about financial systems, trading technology, and market workflows.
• Fluency in English and Italian (written and spoken).
• Commitment to confidentiality, professionalism, and continuous improvement.

 Euronext Values Unity

• We respect and value the people we work with
• We are unified through a common purpose
• We embrace diversity and strive for inclusion

 Integrity

• We value transparency, communicate honestly and share information openly
• We act with integrity in everything we do
• We dont hide our mistakes, and we learn from them

 Agility

• We act with a sense of urgency and decisiveness
• We are adaptable, responsive and embrace change
• We take smart risks

 Energy

• We are positively driven to make a difference and challenge the status quo
• We focus on and encourage personal leadership
• We motivate each other with our ambition

 Accountability

• We deliver maximum value to our customers and stakeholders
• We take ownership and are accountable for the outcome
• We reward and celebrate performance

 We are proud to be an equal opportunity employer. We do not discriminate against individuals on the basis of race, gender, age, citizenship, religion, sexual orientation, gender identity or expression, disability, or any other legally protected factor. We value the unique talents of all our people, who come from diverse backgrounds with different personal experiences and points of view and we are committed to providing an environment of mutual respect. Additional Information This job description is only describing the main activities within a certain role and is not exhaustive. It does not prevent to add more tasks, projects.