Engine by Starling
UK cloud-native core banking from the team that runs Starling Bank, sold to other banks as Engine
Quick Overview
| Company | Engine by Starling Limited |
|---|---|
| Category | Core Banking Software |
| Headquarters | London, United Kingdom |
| Founded | Not stated |
| EU Presence | Yes - United Kingdom (UK) |
| Data Location | Not stated on the website |
| Open Source | No |
| GDPR Compliant | Yes |
| Self-Hosting | No |
| Main Features | Core banking products, management portal, mobile SDKs, cloud-native real-time platform, pre-integrated digital bank |
| Pricing | Pricing on request |
| Best For | Banks launching a new digital bank or a sidecar proposition on a proven platform |
| Replaces | Fiserv, FIS, Jack Henry |
Detailed Review
Engine says its platform has powered Starling since 2016 and presents Starling's 2025 annual report figures (6.2 million group accounts, 79 percent active customers) as proof of scale. It lists six locations, more than 400 employees and 30 nationalities.
The website names Engine by Starling Limited, registered in England and Wales under number 13925405, registered office at London Fruit and Wool Exchange; the footer carries a Starling Bank copyright.
More Than a Core
Engine calls itself a complete, pre-integrated solution: core banking products, a management portal for operations and mobile SDKs for the customer app. A bank that buys it gets the pieces that a Fiserv or FIS core usually leaves to third parties.
Bank-Built Provenance
The pitch is that it was built for bankers by bankers and runs a live bank. Case study: Salt Bank, whose CEO says Engine let the bank meet a 12-month project timeline.
A Separate UK Offer
Starling also runs a B2B team for UK banking-as-a-service. That is a different product from Engine, and the site says to contact that team for it.
Limitations to Consider
No pricing or hosting region is published. The most prominent proof is Starling itself, the vendor's own sister business, so independent references are fewer. The site shows no self-hosting. For banks that want a vendor without a competing consumer bank in the same group, Thought Machine or 10x Banking are alternatives.
Who Should Use Engine by Starling
Banks and new digital banks that want a core with channel components included, from a UK vendor with its own live bank as reference.
Pros and Cons
Pros
- Runs a live UK bank
- Management portal and mobile SDKs included
- Real-time, 24/7 platform as described
- Named UK company with registered office
- Customer case study (Salt Bank)
Cons
- No public pricing
- Tied to Starling Bank group
- Hosting region unstated
- Fewer independent references
Alternatives to Engine by Starling
Other European core banking software worth comparing before you decide:
Thought Machine
United Kingdom · Cloud-native core ledger and payments with a configuration layer
Mambu
Netherlands · Composable SaaS core for lending, deposits and payments
Skaleet
France · Modular SaaS core banking on EU-based private cloud
10x Banking
United Kingdom · SaaS core for banks, mutuals and lenders with AI migration tools
See all European core banking software or compare them directly against Fiserv on our alternatives page.
Frequently Asked Questions
The site shows a Starling Bank copyright and describes Engine as the people behind the platform that powers Starling. The legal entity is Engine by Starling Limited.
A management portal and mobile SDKs, according to the solutions section.
No. The site points UK banking-as-a-service enquiries to Starling's separate B2B team.