The Series C financing comprised £26m in equity led by Anthos Capital and £20m in debt from Mars Capital.
"I am absolutely delighted that less than four months after Railsbank evolved to become Railsr, we have achieved another milestone and closed our Series C, a significant step on our route to profitability."
The London-based HR software provider secured Series A backing from Lachy Groom and a cohort of prominent angel investors to scale its European footprint.
The financing round was led by Kibo Ventures to fund the global rollout of the firm's home sleep testing technology.
"The response to AcuPebble SA100 since its launch has been incredible, and we are thrilled to see the product being used to help patients and clinicians in the real world. This funding will help us reach our initial goal of diagnosing one million patients and gives us the opportunity to continue working on new products that will fundamentally improve the lives of millions of people living with severe chronic conditions."
The investment round led by SuperSeed will support platform scaling and engineering talent acquisition.
"We are delighted to have the financing in place to grow our company and to support client banks until go-live and beyond. We look forward to working with more clients and partners in this next phase of Finteum’s journey."