Sebastien Rousseau

CASE STUDY

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

Role: Senior product / technology lead

Period: Multi-year programme at HSBC Commercial & Investment Bank

Status: Live in production at a Tier-1 global bank

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.

Engineering rigour
SignalEvidence
Role scopeSenior product / technology leadership inside CIB
Regulatory perimeterFCA / PRA-regulated payments platform
Integration surfaceTreasury APIs, balance / cash management, BaaS distribution
AudienceCorporate treasurers at multinational and Tier-2 banks

External validation

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