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Case study

Core banking at Peerless SGS

Frontend modules for SeaBaas and Mizan, the core banking platforms Peerless builds for banks and fintechs.

Client
Peerless SGS
Period
2026 – present
Focus
Fintech · Core banking
SeaBaas Customer Management screen: a table of individual customers with their phone number, branch, status and last update, totals for all, active and deactivated customers, and a quick links panel.
SeaBaas · Customer management · Image: Peerless
End users on Peerless platforms
5M+
API calls a day
186M+
Uptime
99.9%
Core banking modules
15+

Platform figures published by Peerless on bepeerless.co. Users, API calls and uptime are from live production deployments over the last 12 months.

01The problem

SeaBaas is a cloud-ready core banking platform that runs real-time banking operations; Mizan is its configuration for interest-free (Islamic) banking. Each screen sits on top of a critical operation, so it has to be correct, consistent and safe to change, while many modules and teams keep adding to the same product.

02My role

Frontend Engineer. I build and maintain modules as microfrontends, contribute to the shared component library, and work with the backend engineers on the APIs each module depends on.

03Approach

  1. Each module is a React and TypeScript microfrontend inside one shared platform.
  2. Screens come from a shared component library, so tables, forms and approval flows look and behave the same in every module.
  3. Multi-step banking workflows broken into clear, responsive screens.
  4. API integrations for each critical operation, built alongside the backend engineers.
  5. Code reviews and architecture discussions as more modules and teams join the platform.

04Impact

  • Modules in production at Sterling Bank, AltBank, ARM, Kolomoni, microfinance banks and fintechs.
  • Faster delivery across teams, since new screens start from components that already exist.

05Stack

  • React
  • TypeScript
  • Microfrontends
  • Component libraries
  • REST APIs
  • Responsive design
  • Performance optimisation

More screens

  • Mizan Fund Utilisation Management screen: cards for pool balance, funds deployed, profit realised and deals financed, above a leaderboard of financing pools.
    Mizan · Fund utilisation management · Image: Peerless