Evolving a Climate Fintech Lending Platform for Sustainable Home Improvements

More than 20 intive engineers worked hand in hand with Mosaic’s team to deliver high-quality assets, evolve the platform’s architecture, and provide ongoing system maintenance.  We provided expert consultancy covering frontend and backend development, integration of external services, and implementation of critical business processes. Agile methodologies were introduced to enhance decision-making, and new technologies were proposed to drive improvements throughout all stages, from architecture design to implementation.

We advanced in transitioning the legacy monolith backend to a microservices architecture, supported by Kubernetes and AWS Lambda. This involved re-engineering critical software modules and using a project-based approach to data migration, ensuring each component was migrated in line with business needs.

In addition, we supported the development of a new frontend with React, based on a microfrontends architecture, using automated sanity tests with Playwright. This improved efficiency in the development, testing, and deployment processes for introducing new digital assets, with a focus on quality and user experience. As part of these features, key elements such as signing, authentication, and payments were delivered to further enhance platform functionality.

To further streamline the financing application process, we improved Mosaic’s public API, enabling solar installers and home improvement contractors to easily help homeowners review their project financing options. This enhancement facilitated third-party integrations with external scoring engines, loan providers, and contractor partners, among other major players.