Sebastien Rousseau
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TIER-1 BANK · TREASURY · BAAS

HSBC Treasury APIs — payments and Banking-as-a-Service

Shipped production payment, balance, and liquidity APIs against the bank's regulatory perimeter — across architecture, vendor integration, supervisory evidence, and the operational-resilience controls DORA and SR 11-7 now mandate.

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Shipped production payment, balance, and liquidity APIs against the bank's regulatory perimeter — across architecture, vendor integration, supervisory evidence, and the operational-resilience controls DORA and SR 11-7 now mandate.

Problem

Corporate treasury teams demand programmable access to cash management, liquidity, and payments rails inside a Tier-1 bank — without giving up the regulatory evidence layer the bank itself has to produce.

What I built

Led product and technology workstreams for HSBC's treasury APIs and Banking-as-a-Service programme inside the Commercial & Investment Bank, shipping production payment, balance, and liquidity APIs against the bank's regulatory perimeter. Worked across architecture, vendor integration, supervisory evidence, and the operational-resilience controls that DORA and SR 11-7 now mandate.

By the numbers

Tier-1
Global bank, Commercial & Investment Bank
FCA / PRA
Regulated payments perimeter
Treasury / BaaS
Programmable cash, liquidity, payments rails
Multi-year
Senior product + technology leadership

Engineering rigour

  • Role scope

    Senior product / technology leadership inside CIB

  • Regulatory perimeter

    FCA / PRA-regulated payments platform

  • Integration surface

    Treasury APIs, balance / cash management, BaaS distribution

  • Audience

    Corporate treasurers at multinational and Tier-2 banks

Independently verified

  • Public role at HSBC Commercial & Investment Bank — verifiable via LinkedIn
  • Programme scope referenced in About / Experience section

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Want this kind of evidence in your bank?

Architecture reviews, post-quantum migration plans, treasury-API programmes — all signed, all verifiable.

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