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.

Hybrid work model: 4 days per week in the office

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