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Douala · UTC+1

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Pictet TechLuxembourg · Private Banking

Killing a legacy SDK without killing the app.

A full rebuild of Pictet Wealth, the mobile app of a Swiss private bank.

Pictet Wealth app, portfolios overview screen
Client
Pictet Tech
Sector
Private banking · Wealth management
Location
Esch-sur-Alzette, Luxembourg
Period
2025
Team
Sirius team
Stack
Kotlin, Jetpack Compose, Clean Architecture, MVI, three-layer UI architecture

The challenge.

A wealth management app locked into Backbase, a legacy SDK: slow delivery, XML layouts and code that was hard to test.

What we did.

  1. Leaving Backbase, step by step

    The SDK replaced one piece at a time, flow after flow.

  2. Clean Architecture and MVI

    Clearly separated layers and predictable screen state, so it can be tested.

  3. A three-layer UI architecture

    The whole interface rebuilt in Jetpack Compose, on a three-layer UI architecture.

  4. The key flows

    Onboarding, portfolio, payments and transactions.

In the app.

  • Pictet Wealth, positions and transactions of a test portfolio
    Follow the portfolio
  • Pictet Wealth, a new payment, transfer and Swiss QR-bill
    Start a payment
  • Pictet Wealth, a payment summary before it is sent
    Review and submit

The outcome.

Fewer crashes, faster feature delivery and a codebase the bank’s team can own for the long term.

  • 8 monthsfrom legacy to modern

Your next product deserves better engineering.

Tell us what you’re building. We’ll tell you honestly whether we’re the right fit, and if we are, we’ll start within two weeks.

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