# Sebastien Rousseau

AI, banking and financial services expert. Senior payments leader at HSBC Commercial & Investment Bank. Twenty years across Tier-1 banks (HSBC, PayPal, Barclays) and consumer technology (Shazam, AKQA, Virgin Group). Applied AI, ISO 20022 migration, wholesale payments and post-quantum cryptography for financial services.

## Canonical entry points

- [Home](https://sebastienrousseau.com/) — landing page with the latest research and projects.
- [About](https://sebastienrousseau.com/about/) — full biography, professional history, areas of expertise.
- [Articles](https://sebastienrousseau.com/articles/) — research notes on quantum-safe cryptography, ISO 20022, applied AI, wholesale payments.
- [Papers](https://sebastienrousseau.com/papers/) — industry white papers, peer-reviewed analysis, regulatory submissions.
- [Projects](https://sebastienrousseau.com/projects/) — open-source Python and Rust libraries for payments, post-quantum crypto, AI tooling.
- [Topics](https://sebastienrousseau.com/topics/) — topic hubs: post-quantum, ISO 20022, applied AI, Rust, blockchain.
- [Playlists](https://sebastienrousseau.com/playlists/) — curated music libraries for deep work and engineering flow.
- [Contact](https://sebastienrousseau.com/contact/) — professional contact form for consulting, speaking, advisory engagements.

## Feeds

- [RSS feed](https://sebastienrousseau.com/rss.xml)
- [Atom feed](https://sebastienrousseau.com/atom.xml)
- [JSON Feed 1.1](https://sebastienrousseau.com/feed.json)
- [News sitemap](https://sebastienrousseau.com/news-sitemap.xml)
- [Sitemap](https://sebastienrousseau.com/sitemap.xml)
- [French RSS](https://sebastienrousseau.com/fr/rss.xml)
- [French sitemap](https://sebastienrousseau.com/fr/news-sitemap.xml)

## RAG corpus + oEmbed (machine-readable surfaces)

- [/feed.jsonl](https://sebastienrousseau.com/feed.jsonl) — full editorial corpus, newline-delimited JSON, one record per article with title, summary, body_markdown, body_text, tags, pillars, license.
- [/tags/<slug>/feed.jsonl](https://sebastienrousseau.com/tags/iso-20022/feed.jsonl) — per-canonical-tag subsets (51 tags today; substitute any canonical slug from taxonomy.yml).
- [/oembed/<slug>.json](https://sebastienrousseau.com/oembed/2026-06-12-kyberlib-post-quantum-banking-migration-standards-code-2026.json) — static oEmbed metadata per article. Notion / Discord / Slack / WordPress / Atlassian consume this directly.
- [/tags/](https://sebastienrousseau.com/tags/) — curated 6-pillar editorial cover with featured tags and per-tag collapsible article lists.
- [/categories/<pillar>/](https://sebastienrousseau.com/categories/ai/) — per-pillar landing pages (ai, payments, infra, policy, open-source, leadership) with the tags + recent articles in each.
- [/.well-known/ai.txt](https://sebastienrousseau.com/.well-known/ai.txt) — AI usage policy (attribution + license terms).

## Areas of expertise

- Applied artificial intelligence in banking
- Generative AI for financial services
- Wholesale payments
- ISO 20022 migration
- SWIFT gpi
- SEPA Instant Payments
- Cross-border payments
- Post-quantum cryptography for financial services
- CRYSTALS-Kyber, CRYSTALS-Dilithium
- Quantum-safe payment authentication

## Contact

Sebastien Rousseau (London, UK)

- LinkedIn: https://www.linkedin.com/in/sebastienrousseau/
- Twitter / X: https://twitter.com/wwdseb
- Medium: https://medium.com/@BankingOnQuantum
- YouTube: https://www.youtube.com/@BankingOnQuantum
- GitHub: https://github.com/sebastienrousseau
- Newsletter: https://news.bankingonquantum.com