Media kit
Sebastien Rousseau
Senior Product Manager, Wholesale Payments & API · HSBC
Bios
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Senior payments and financial services leader; leads wholesale payments API products at HSBC and works on quantum-safe payments with the EPAA.
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Sebastien Rousseau is a senior payments and financial services leader with more than 20 years in payments, banking and digital technology. He leads wholesale payments API products at HSBC and is a member of the Emerging Payments Association Asia's Quantum-Safe Cryptography Working Group.
Medium
Sebastien Rousseau is a senior payments and financial services leader with more than 20 years in payments, banking and digital technology. He leads wholesale payments API products at HSBC and is a member of the Emerging Payments Association Asia's Quantum-Safe Cryptography Working Group, contributing to its white paper Quantum-Safe Payments: Why the Payments Industry Must Act Now (September 2025). He maintains open-source ISO 20022 and post-quantum cryptography libraries and publishes Banking On Quantum and Banking On AI.
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Sebastien Rousseau is a senior payments and financial services leader with more than 20 years in payments, banking and digital technology. At HSBC he leads wholesale payments API products in Commercial & Investment Banking, which he joined in 2016 as API Engineering Lead. Before that he founded and ran Reedia Ltd as Chief Executive Officer, shaped PayPal's HCE and tokenisation strategy with tier-one banks, led a mobile banking transformation at Barclays Corporate Banking, was Head of Mobile at Shazam, and headed AKQA's mobile technology division for clients including Nike, RBS and Nokia. He is a member of the EPAA Quantum-Safe Cryptography Working Group, a Fellow of the Institution of Analysts and Programmers, and the maintainer of widely used open-source payments and cryptography libraries. He speaks and writes on ISO 20022, post-quantum migration and agentic AI in banking.
Talks available to book
- Post-Quantum Migration for Payments: From FIPS 203 to Inspectable Code
- ISO 20022 in Practice: pacs.008, pain.001, and the Structured-Address Cliff
- Open Source as Financial Infrastructure
- Harvest-Now-Decrypt-Later: The Board-Level Case for Quantum-Safe Payments
- Agentic AI in Banking: From Demo to Auditable Workflow
Languages
English (native or bilingual), French (native or bilingual), Spanish (limited working), German (elementary).
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