rewrite this title Mambu Launches Composable Banking; Extends Partnership with Krom Bank – Finovate

SaaS cloud banking platform Mambu announced the launch of its composable banking approach for credit unions in North America.

The initiative will help credit unions move beyond monolithic, legacy systems and embrace a modern composable banking infrastructure that supports innovation.

Mambu also announced that it has extended its partnership with Indonesian digital bank Krom for five years.

SaaS cloud banking platform Mambu finds itself in the fintech headlines twice in a week’s time. The Europe-based fintech announced today the launch of its composable banking approach for North American-based credit unions. The initiative is designed to enable credit unions to evolve beyond legacy core systems, modernize their infrastructures, and provide their members with a more compelling digital experience. The launch news comes just days after Mambu announced that it was extending its partnership with Indonesian digital bank Krom (PT Krom Bank Indonesia).

An innovator in the field of composable banking—which relies on modular, interchangeable components rather than singular, monolithic systems—Mambu is looking to help credit unions transition from legacy systems and embrace a more modern infrastructure that promotes speed, offers flexibility, and supports innovation. In a statement, the company noted that its composable banking approach also facilitates new options when it comes to deployment, including speedboat deployment, dual core, and staged migrations. These deployment strategies enable credit unions to continue to innovate while maintaining control over the pace of the institution’s transformation.

“Credit unions are under immense pressure to keep pace with member expectations, all while operating on legacy systems that many feel hold them back,” Mambu VP of Credit Unions Amber Harsin said. “Composability is not a strategy of patching or layering complexity onto legacy systems to force integration; it’s about forging a clean, digital-first foundation that allows credit unions to scale, innovate, and serve their communities better.”

Mambu also recently announced that it has extended its partnership with Indonesian digital bank Krom (PT Krom Bank Indonesia) for five years. The collaboration between Mambu and Krom enabled the latter to launch its digital banking app in 2024.

“Mambu has proven to be a powerful partner from day one,” Krom Bank President Director Anton Hermawan said. “Our renewed partnership is a key step in Krom’s long-term strategy to build a scalable, innovative, and inclusive digital bank for Indonesians. With Mambu’s cloud-native core and the flexibility it provides, we’ve been able to launch high-impact products faster, stay compliant, and deliver a seamless experience to our customers.”

Krom’s relationship with Mambu goes back to the spring of 2022, when the digital bank selected the company as its core banking partner. Today, Krom Bank is one of the fastest-growing digital banks in Indonesia and has targeted both profitability and more than 20 million accounts on its books by 2030.

“Krom Bank is a standout example of what’s possible when bold vision meets modern technology,” Mambu Managing Director, Head of APAC Sales, David Becker said. “Its rapid growth and strong financial performance are a testament to how a cloud-native, composable core like Mambu can support scale and agility in even the most complex markets.”

Founded in 2011, Mambu most recently demoed its technology at FinovateEurope 2022 (in partnership with Persistent Systems). The European fintech has more than 260 customers around the world, 114 million end users, and its technology handles 200 million API calls per day. Fernando Zandona is CEO.

Photo by Mourizal Zativa on Unsplash

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