Scaling life-centric digital banking in Indonesia with Mambu
Bank Jago partnered with Mambu in 2020, implementing its core banking platform in just 7 months. Since then, the bank established itself as one of Indonesia’s leading life-centric digital banks delivering substantial growth and reshaping how Indonesians manage their finances.
- months implementation
- million customers
Bank Jago
About the customer
PT Bank Jago Tbk is a tech-based bank which aspires to enhance the growth of millions through life-centric digital financial solutions. The bank offers banking products and services, available in both conventional and Sharia'h forms.
Bank Jago develops the Jago App, designed to be seamlessly embedded within various digital ecosystems, and can be customised and personalised to be compatible with ecosystem partners' technology and the unique needs of each customer.
Bank Jago develops the Jago App, designed to be seamlessly embedded within various digital ecosystems, and can be customised and personalised to be compatible with ecosystem partners' technology and the unique needs of each customer.
To simplify customers' lives, the Jago App collaborates with digital ecosystems.
By 2024, the bank sustained strong growth in deposits, lending, and profitability. By mid-2025, it had grown to over 18 million customers, ranking consistently among Forbes’ World’s Best Banks and standing out as Indonesia’s top tech-based bank.
The challenge
From legacy banking to life-centric digital
When Bank Jago, originally Bank Artos Indonesia, rebranded and began its transformation in 2020, it wanted to move from a traditional setup to a fully digital, cloud-native model.
Indonesia’s banking market is highly competitive, with digital-first players and fintechs setting new standards for speed and customer experience.
To compete, Bank Jago needed a flexible core that could support rapid product development, scale securely, and comply with strict local regulations around data residency.
The solution
A composable core built for speed and scale
“Our vision is to build a truly life-centric digital bank that empowers individuals, families, and communities to manage money collaboratively. Supported by Mambu's core banking system, we were able to launch innovative products and features in the Jago App, and deliver banking that reflects the way Indonesians actually live, save, and grow together.”
- Nicholas Tan, Head of Retail Banking Business at PT Bank Jago Tbk
In early 2020, Bank Jago selected Mambu’s composable core banking platform as the foundation for its transformation. It became the first organisation in Indonesia to benefit from the global partnership between Mambu and Google Cloud, deploying in the Jakarta region to comply with local data residency rules while operating fully in the cloud.
Mambu’s SaaS core was implemented in just seven months, giving Bank Jago the speed and flexibility to bring to market a full, modern retail banking suite including daily banking, savings, transactions and payments, as well as lending. This enabled them to bring these services to market far faster than with a traditional setup.
Mambu’s SaaS core was implemented in just seven months, giving Bank Jago the speed and flexibility to bring to market a full, modern retail banking suite including daily banking, savings, transactions and payments, as well as lending. This enabled them to bring these services to market far faster than with a traditional setup.
Soon after in 2021, Bank Jago introduced its mobile app, the Jago App, designed around the principle of life-centric banking. Features such as shared accounts and group money management allowed customers to plan and save together, reflecting the social and collaborative way money is often managed in Indonesia.
The result
Profitable growth, global recognition
Bank Jago’s migration to Mambu marked the launch of a truly digital bank, which has since delivered measurable growth and market impact.
By the first half of 2025 customer numbers reached 18 million, of which 13.7 million were funding and deposit users.
Total assets climbed to IDR 32.4 trillion, and net profit more than doubled, Bank Jago continued to demonstrate both sustainable growth and financial strength.
This performance has been recognised internationally.
Forbes named Bank Jago one of the world’s best banks for the fourth consecutive year in 2025, ranking it as Indonesia’s top tech-based bank.
The renewal of the partnership with Mambu in mid-2025 for an additional three years underscores its importance in Bank Jago’s success.
With Mambu, the bank gains the scalability and resilience needed to support its rapid growth trajectory and sets the foundation for the next stage of expansion across the region.
“Partnering with Mambu has given us the speed, scalability, and resilience to grow over 18 million customers while keeping data secure and compliant in Indonesia. This collaboration continues to be the backbone of our sustainable growth and ensures we are well-positioned for the next phase of advancement.”
- Supranoto Prajogo, Director at Bank Jago
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