Java Software Developer

Join us as a Java Software Developer

Build reliable backend solutions for real-time trading systems.

We are looking for a Java Software Developer to join our trading technology team in Porto and contribute to the development and maintenance of high-performance trading software. Working under the guidance of senior engineers, you will support the design, development, testing, and maintenance of Java-based trading systems that power mission-critical solutions for banks, brokers, and funds.

In this role, you will contribute to reliable and scalable systems while building a strong foundation in software engineering best practices, trading technology, and real-time systems. You will collaborate closely with senior developers, analysts, QA, and DevOps teams in an environment that values learning, accountability, and continuous improvement.

Hybrid working model: 4 days per week in the office.

Why this role is exciting

• Work on real-time, high-performance trading systems used by global financial institutions

• Learn from experienced engineers in a collaborative, multidisciplinary team

• Gain exposure to financial markets, trading workflows, and low-latency systems

• Build backend services, APIs, UIs, and integration layers for mission-critical platforms

• Grow towards full technical autonomy while contributing to meaningful products

Key Responsibilities

Software Design & Development

• Contribute to the design, development, and maintenance of efficient and testable Java code using Spring, Spring Boot, or equivalent frameworks

• Develop and maintain backend services, APIs, UIs, and data integration layers

• Apply coding standards, version control practices, and documentation guidelines

• Participate in code reviews and apply feedback to improve product quality and efficiency

• Support product consistency and quality across releases

Quality, Accountability & Compliance

• Design, implement, and execute automated unit, integration, and performance tests

• Assist in debugging, troubleshooting, and resolving software issues

• Follow internal development and delivery processes with attention to efficiency, deadlines, and compliance

• Ensure confidentiality of proprietary code, client data, and internal methodologies

• Write, review, and maintain technical documentation aligned with product releases

• Deliver assigned tasks within agreed deadlines and provide regular progress updates

Collaboration & Client Success

• Work closely with senior developers, Business Analysts, Quality Assurance Specialists, and DevOps teams

• Understand functional and technical requirements and help translate them into effective solutions

• Contribute actively to team objectives and continuous product improvement

• Support the delivery of reliable, scalable solutions that meet client expectations and contribute to client satisfaction

Learning, Growth & Continuous Improvement

• Commit to continuous professional growth through on-the-job learning and self-study

• Develop a solid understanding of trading workflows, financial markets, and real-time system requirements

• Stay informed about new technologies, development tools, and industry best practices

• Show curiosity, initiative, and motivation to grow into a fully autonomous software engineer

Profile & Qualifications

Technical Skills

• BSc in Computer Science, Engineering, or a relevant field

• Good knowledge of Java 1.8 and object-oriented programming principles

• Familiarity with Spring, Spring Boot, 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 and the Atlassian suite (Bitbucket, Jira, Confluence)

• Familiarity with Version Control Systems and CI/CD tools (e.g. Git, Jenkins), with autonomy in debugging and profiling tools

• Knowledge of messaging systems (Kafka, RabbitMQ) and databases (SQL, NoSQL)

• Familiarity with containerization and orchestration tools (Docker, Kubernetes)

• Familiarity with serialization frameworks

• Experience with financial systems, trading workflows, or market data is a plus

Soft Skills & Mindset

• Strong sense of accountability, responsibility, and commitment to deadlines

• Team-oriented mindset with efficiency and product quality as guiding principles

• Strong analytical and problem-solving skills, with attention to detail

• Willingness to learn about financial systems, trading technology, and market workflows

• Excellent communication and teamwork abilities

• Fluency in English (written and spoken) and Italian is a plus

• Commitment to confidentiality, professionalism, and continuous improvement

Apply by submitting a CV in English

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 don’t 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.