Principal Architect, CSD Integration & Asset Servicing

Euronext; Paris; On-site; EUR 120,000 - 180,000; Full time

Job summary

Euronext is seeking a Principal Software Engineer to design and build the CSD capabilities connecting digital-asset apps to Euronext Securities. You will own the architecture for the CSD Integration, Asset Servicing & Reporting team, write production code, and review colleagues’ work.

You’ll shape the gateway interface, ensure resilience and observability, and drive integration with legacy platforms while coordinating with the tokenisation-engine team and the principal architect.

Qualifications

• Post-trade and system knowledge in securities.
• Experience with T2S settlement instructions and confirmations.
• ISO 20022 settlement messaging and SWIFT connectivity.
• Solution architecture for regulated, high-availability systems.
• Event-driven architecture and domain-driven design.
• Integration with legacy financial-market platforms, modernised step by step.
• Backend development in Go and/or Java: production code, not just prototypes.
• REST APIs (OpenAPI), Kafka and message brokers.
• SQL and NoSQL data stores.
• Containers on Linux: Docker, Kubernetes or OpenShift.
• Git, CI/CD, Terraform and observability tooling.

Responsibilities

• Own the team’s technical architecture: designs, interface contracts, standards and roadmap.
• Contribute production code to the codebase, starting with critical components such as the CSD gateway.
• Review code: pull requests, coding standards, test coverage and security.
• Design the CSD gateway and its T2S integration: lock and release, instructions, queuing, cut-offs, confirmations and status.
• Design for failure: handle duplicate or delayed messages, retries, partial failures, corrections and auditable exceptions.
• Reuse and extend existing Euronext Securities systems rather than duplicating them.
• Shape the architecture for corporate actions, entitlements and reporting to custodians.
• Set and test non-functional requirements: resilience, performance, security, recoverability and observability.
• Build prototypes and lead build, buy and integration decisions.
• Work with the product manager to align priorities; you own the technical solution.
• Help the team build, test and run what it ships: environments, CI/CD, monitoring, runbooks and on-call during T2S hours.

Skills

Architecture

Go

Java

REST APIs

Kafka

SQL/NoSQL

Docker/Kubernetes/OpenShift

Terraform

OpenTelemetry

CI/CD

Education

Bachelor's degree in computer science or related field

Tools

Go

Java

OpenAPI

Kafka

ActiveMQ

SQL

NoSQL

Docker

Kubernetes

OpenShift

Terraform

OpenTelemetry

Git

Job description

Euronext is seeking a Principal Software Engineer to design and build the CSD capabilities connecting digital-asset apps to Euronext Securities. You will own the architecture for the CSD Integration, Asset Servicing & Reporting team, write production code, and review colleagues’ work.

You’ll shape the gateway interface, ensure resilience and observability, and drive integration with legacy platforms while coordinating with the tokenisation-engine team and the principal architect.