Join Euronext as a Principal Software Engineer

As a Principal Software Engineer, you will work closely with Development Teams and Architects in our Porto office to design and implement software components that support the business needs and long-term strategy of Euronext’s Central Securities Depositories (CSDs).

Operating in a highly regulated, mission-critical post-trade environment, you will play a key role in shaping the software development strategy that underpins settlement, custody, asset servicing, and related post-trade services across the Group.

You will be recognized as a technical expert across multiple technology domains and act as a reference point for architectural decisions, engineering standards, and technology evolution.

Key Accountabilities

• Define and provide technical guidance and best practices to software development teams

• Partner with Architects to design and build applications, software components, integrations, and interfaces across CSD business domains

• Collaborate with QA leadership to define testing tools and automation frameworks, fostering CI/CD strategies

• Work with Quality Assurance to develop test cases, procedures, and test plans

• Support and guide development teams throughout the full Software Development Lifecycle

• Mentor and coach software engineers, fostering both technical excellence and soft skills development

• Assess technology trends and promote the adoption of best-of-breed technologies aligned with business vision and regulatory requirements

• Review the current application landscape and provide guidance for its evolution and modernization

• Contribute to project delivery, ensuring objectives are achieved on time, on scope, and on budget, while aligning technology choices with long-term strategy

• Ensure solutions are scalable, resilient, secure, and compliant with the regulatory framework applicable to CSD environments

Knowledge, Skills and Experience Required

• Bachelor’s or Master’s degree in Computer Science, Information Technology, or a related field

• Proven experience as a Principal Engineer in large and complex organizations

• Strong technical expertise in front-end (Angular, Node.js, etc.) and back-end (.NET, Java, etc.) technologies

• Strong experience with API Gateways, Messaging systems, and Event-driven architectures

• Experience designing and implementing monitoring and logging solutions

• Experience designing and implementing CI/CD pipelines and DevOps practices

• Strong expertise in both SQL and NoSQL databases

• Experience working with cloud environments and containerization technologies

• Recognized expert in the design and implementation of software components, modules, and features

• Experienced decision-maker in areas such as software architecture, coding standards, and technology adoption

• Ability to communicate complex technical, security, and privacy concepts to business stakeholders

• Strong leadership skills with the ability to influence and guide teams in regulated and high-availability environments

• Fluency in English (written and spoken) is mandatory

Desirable

• Experience in digital-native companies building software platforms at significant scale

• Experience in financial services, capital markets, or post-trade environments (CSD experience is a strong advantage)

Apply by submitting a CV in English

Why Join Us

• Work on mission-critical post-trade infrastructure supporting European capital markets

• Play a strategic role in shaping the technology roadmap of Euronext’s CSD platforms

• Operate in a highly collaborative, international environment

• Contribute to modernisation, scalability, and innovation within a regulated financial ecosystem

• Grow your leadership impact while remaining hands-on at a technical level