Blockchain Smart Contract Engineer for Tokenization Platform

Euronext; Paris; Sur place; EUR 90 000 - 150 000; Plein temps

Résumé du poste

Euronext is building a Digital Assets team in Paris, Porto, Milan, and Rome. The Blockchain / Smart Contract Engineer will design and secure the on-chain core, with smart contracts spanning issuance to settlement, collaborating with product and cross-functional teams to deliver robust, compliant solutions.

Based in one of the major European cities, you will report to the CTO Digital Assets and help shape the next generation of market infrastructure, integrating tokenisation and DLT capabilities

Qualifications

• Strong experience with Solidity / EVM and permissioned-chain patterns.
• Deep understanding of ERC-20 and extensions.
• Experience with property-based and fuzz testing; gas and security profiling.
• A precise, security-first mindset and experience working with auditors.
• Excellent analytical, problem-solving and communication skills.
• Degree in computer science, engineering or a related field, with three or more years of relevant experience.

Responsabilités

• Design and implement all smart contracts constituting the core of our digital assets platform.
• Write property-based and fuzz tests; maintain invariants on supply and ownership.
• Prepare contracts for external audit and remediate findings.
• Design the tokenization engine for reuse across multiple instrument types.
• Use AI-assisted contract scaffolding and refactoring, with disciplined human review of every generated line.
• Generate property and fuzz test suites for smart-contract invariants with AI.
• Use AI for vulnerability triage and audit preparation, treating output as leads to verify rather than conclusions.
• Maintain prompt hygiene — never expose keys, addresses, or unaudited logic to external AI services.

Connaissances

Solidity / EVM

Permissioned-chain patterns

ERC-20 and extensions

Property-based testing

Fuzz testing

Security auditing

Analytical thinking

Communication skills

Degree in CS/Engineering

Formation

Degree in computer science or engineering

Description du poste

Euronext is building a Digital Assets team in Paris, Porto, Milan, and Rome. The Blockchain / Smart Contract Engineer will design and secure the on-chain core, with smart contracts spanning issuance to settlement, collaborating with product and cross-functional teams to deliver robust, compliant solutions.

Based in one of the major European cities, you will report to the CTO Digital Assets and help shape the next generation of market infrastructure, integrating tokenisation and DLT capabilities