Becoming Germany’s first fully cloud-based bank
Europe’s leading BaaS embedded finance platform, partnered with Mambu to unlock unlimited scalability, accelerate product launches, and support international expansion—an award-winning cloud banking innovation.
- month implementation
Solaris
About the customer
Solaris is Europe’s leading embedded finance platform. Solaris’ proprietary modular B2B tech stack empowers its partners—from SMEs to large multinational non-financial companies—to offer unique, customer-centric banking services. Providing seamless experiences to customers across all industries. Founded in 2015, Solaris pioneered the Banking-as-a-Service market with an unparalleled combination of tech
and banking. Solaris operates across multiple European markets, including France and Italy.
and banking. Solaris operates across multiple European markets, including France and Italy.
With a full German banking license and an API-first platform, Solaris enables its partners to integrate financial services directly into their products or services. Some of Solaris’ key partners include ADAC, Bitpanda and Tomorrow, all of whom leverage its modular banking infrastructure to offer seamless financial services to millions of customers.
The challenge
Overcoming lending scalability limits
Solaris was built from the ground up to be different. In order to run their modular core banking system more efficiently, Solaris needed to find a solution to help serve as the customer account subledger system for their lending business.
Scalability was limited as only one loan could be created at a single point in time, and the total amount of loans that could be generated per day was restricted. Also their legacy provider didn’t support horizontal scaling, meaning it was impossible to add more instances to the system and distribute the load between them.
“During multiple meetings and workshops, Mambu was able to show us unique flexibility on the product configuration side. Their solution-driven mindset, communication efficiency and speed of integration is unmatched. ”
- Markus Ring, Head of Product – Lending, Solaris
The solution
Cloud-native transformation with Mambu
To support its vision of banking in the cloud, Solaris selected Mambu’s API-enabled, cloud-native core banking platform, deployed on Amazon Web Services (AWS). This seamless integration allowed Solaris to build a scalable, flexible, and modular banking infrastructure.
Unlike traditional core banking providers that offer rigid, highly integrated solutions, Mambu provided a loan subledger system with unmatched configurability and scalability.
Through multiple workshops, Solaris saw firsthand Mambu’s solution-driven approach, communication efficiency, and speed of integration, making it the ideal partner for their long-term growth.
The result
Achieving cloud-first banking at scale
Following a quick and smooth four month implementation in 2020, Solaris was able to create more compelling products for their customers, that in turn improve the banking experience for consumers in Germany.
Today, Mambu supports Solaris in managing its existing loan portfolio, with minimal operational effort required. This is made possible by Mambu’s API-first architecture, combined with a high degree of automation on Solaris’s side, particularly in the way Mambu integrates with Solaris’s internal core banking and transaction system, Kerna.
Solaris continues to own and operate its transaction engine and end-to-end onboarding process in-house—including data collection, credit assessment, KYC, QES, and pricing. Mambu’s role remains focused on loan servicing, giving Solaris the flexibility and control it needs while scaling efficiently.
By fully migrating to the cloud, Solaris has built a scalable,modular and API-driven banking infrastructure, earning industry recognition. In 2022, CELENT awarded Solaris the Model Bank Award for Core in the Cloud, highlighting its leadership in cloud-native banking transformation.
“A multitude of lending specific use cases are covered extremely well by Mambu, both on conceptual as well as on operational level. This helped us to integrate Mambu into our larger infrastructure within only a couple of months, and it’s already running the lending load of some of our large partners.”
- Markus Ring, Head of Product – Lending, Solaris
Download the full case study
See why CELENT, a leading research and advisory firm recognised Solaris as a model bank of 2022 for core banking in the cloud with Mambu.
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