DevOps - Site Reliability Engineer – Digital Assets

About the role 

We are building a regulated platform for tokenising bonds, organised as several product teams — each with its own product manager, engineers, QA and SRE. You will be the SRE embedded in one of them: owning the infrastructure, deployment pipeline and production reliability of your team's product, including the distributed-ledger infrastructure, signing infrastructure and settlement integrations it depends on — whether we end up running our own nodes or relying on a provider or the network operator. 

You won't be doing it alone. Alongside the SREs in the other product teams you will shape the shared standards — tooling, observability, incident process, security baseline — so that each team can ship independently while the platform runs as one financial market infrastructure. 

We don't expect you to have done everything below. We expect strong SRE fundamentals, and the curiosity to own the ledger and market-infrastructure side as you grow into it. 

What you'll do:

• Build and ship: infrastructure-as-code, CI/CD and zero-downtime deployment for your team's services — and a smart-contract release pipeline with reproducible builds, verification that deployed code matches what was audited, upgrades gated by multi-signature or four-eyes approval, and environment promotion. 

• Run the ledger: the DLT platform and its hosting model are still open. Help assess the options for operability — which platform, and whether we operate nodes ourselves or use node-as-a-service. Then own whichever we choose. If we run our own nodes, that means provisioning, upgrades, membership changes and peering with other participants (CSDs, banks, agents) without downtime. If we use a provider, it means holding them to their SLAs and keeping connectivity reliable: redundant nodes or RPC providers, fee monitoring, finality alerting. 

• Secure signing: run the integration with the MPC custody platform and HSMs — highly available signing, no keys in CI, key ceremonies and break-glass procedures. 

• Observe and reconcile: ledger-aware observability (node and network health, transaction throughput and failures, on-chain/off-chain lag), SLOs and error budgets, and daily reconciliation of on-ledger positions against the legal register. 

• Operate a market: treat bond lifecycle events — coupon payments, redemption at maturity, corporate actions — as scheduled critical events, with pre-flight checks and change freezes aligned with settlement windows and TARGET closing days. Write and maintain the runbooks, including token-specific ones: pausing a contract, freezing a holder on a sanctions or regulator instruction, ledger halt, and incidents on the bridge or settlement leg. 

• Meet the regulatory bar: with the security lead and your peer SREs, harden the infrastructure and meet regulatory operating requirements — DORA (incident reporting, resilience testing, third-party risk for node and RPC providers, custodian and cloud), the DLT Pilot Regime, backup and recovery of ledger state with defined RTO/RPO, EU data residency and tamper-evident audit logs. 

What you bring:

• Infrastructure-as-code (e.g. Terraform), containers/Kubernetes, and CI/CD pipelines. 

• Production observability and incident-response experience; SLO/error-budget practice. 

• Secure, auditable infrastructure for regulated or otherwise sensitive workloads, including network segmentation for exposed services. 

• Comfort working inside a product team while agreeing shared standards with peers in other teams. 

• Calm under pressure, with clear runbooks and strong ownership. 

Strongly preferred:

• Experience running, or running production services on, one or two popular blockchains, public or permissioned (e.g. Ethereum clients, Hyperledger Besu, Canton or similar). 

• Familiarity with MPC / HSM signing infrastructure. 

• Software supply-chain security: signed images, SBOMs, SLSA. 

A plus:  

• Operating bridges — between chains, or between a chain and off-chain systems: relayers, reconciliation and incident response. 

• Experience in regulated market infrastructure (CSD, clearing, payments), DORA, or the DLT Pilot Regime. 

AI engineering skills 

• Required: use AI-assisted infrastructure-as-code and pipeline authoring, with review before apply. 

• A plus: AIOps — anomaly detection on metrics/logs and AI-assisted alert triage. 

• A plus: AI-assisted incident summarisation and post-mortem drafting. 

• A plus: deploying, monitoring and reliably operating in-product AI/ML services (including rollback). 

Join Euronext – Shape capital markets for future generations 

Join a company where market infrastructure is built on innovation — and where every innovation starts with a bold mind asking, "What's next?". At Euronext, we believe change is a starting point, not an obstacle. We look for people who see growth opportunities, think long term, and want to help shape capital markets for future generations. Working with us means: • Being part of a European, international and diverse team – Collaborate across borders with talented colleagues connected by a shared ambition and purpose. • Learning as you grow – Develop your skills through continuous learning, real responsibilities and flexible career paths that evolve with you. • Having an impact – Contribute to projects that matter, in an agile and dynamic environment where your ideas help drive progress. • Driving sustainability – Play an active role in building transparent, responsible and sustainable capital markets for the long term. Together, we don't just support markets — we help shape their future. 

Apply by submitting a CV in English.

The CEDS Digital Asset team is dedicated to advancing secure and resilient securities issuance and settlement. We deliver cutting-edge solutions for both domestic and international markets, supporting clients throughout the entire value chain. Join us and play a key role in building the next generation of digital asset infrastructure. 

Euronext is the leading European capital market covering the entire capital markets value chain, from listing, trading, clearing, settlement and custody, to solutions for issuers and investors. We operate seven national stock exchanges, handling 25% of European lit equity trading. Our products include equities, FX, ETFs, bonds, derivatives, commodities and indices. Euronext also provides clearing and settlement services through Euronext Clearing and our network of Euronext Securities CSDs. In addition, Euronext runs MTS, one of Europe's leading electronic fixed income trading markets, and Nord Pool, the European power market. The company has a diverse domestic and international client base. 

Find out more about us at: Euronext.com

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.