Join Euronext as a Principal Software Engineer - CSD Convergence Programme

Euronext Securities is running the CSD Convergence Programme, one of the most strategic transformation initiatives in the European financial market infrastructure.

The programme aims to converge and modernize Central Securities Depository (CSD) platforms across Europe, delivering a harmonized, resilient, and scalable posttrade ecosystem that supports multiple markets, institutions, and regulatory requirements.

As a Principal Software Engineer, you will play a key technical leadership role in the design and evolution of shared platform services used by the Convergence Programme. You will work on missioncritical systems underpinning posttrade operations, with a strong focus on distributed systems, eventdriven architectures, high availability, and disaster recovery.

This role has a crossteam and crossprogramme impact, influencing architecture, standards and best practices adopted across Euronext Securities.

Why Join this role:

• Contribute to a panEuropean strategic programme impacting European financial market infrastructure.
• Work on largescale, highly available distributed systems in a regulated environment.
• Operate at Principal level, combining handson expertise with architectural leadership.

Key Accountabilities:

• Provide technical leadership within the CSD Convergence Programme, contributing to solution design, architectural decisions, and technical guidance to software development teams.
• Design, build and evolve scalable, highly available and resilient platform components used by multiple product teams.
• Define and promote reference architectures, guidelines and best practices for APIs, messaging, and event streaming.
• Contribute to nonfunctional requirements including availability, performance, security, observability, and disaster recovery.
• Work closely with architecture, infrastructure, security, and DevOps teams in a highly regulated environment.
• Support multiples SW Factory teams in adopting shared platform services and architectural/coding standards.

Knowledge, Skills, and Experience Required:

• Programming language: Java
• Container & Platform: OpenShift / Kubernetes
• Strong experience with API Gateways, Messaging systems, and Event-driven architectures
  • Event Streaming: Kafka
  • Messaging: ActiveMQ
  • API Management: Red Hat 3scale
• Databases / Storage: MongoDB Enterprise, Redis Enterprise, Elasticsearch
• Observability: Monitoring, alerting, and centralized logging
• 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 Euronexts 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