Digital Mortgage Operating System: Application, Approval, Closing

The digital mortgage lender — the consumer mortgage business inside the parent company — is the U.S. online-mortgage leader, with trillions in originations since inception and recent acquisitions in real estate search and mortgage servicing. The technology platform is lender-built and lender-operated, AWS-heavy: SageMaker AI/Studio, EMR, S3, Athena, Lake Formation, Glue, Redshift, Lambda, EKS plus Istio, MLflow, model registry, feature store. Taller's engagement at the digital mortgage lender is the newest in the portfolio: active 2025–2026, sourced primarily from Argentina and Brazil, and anchored on individual contributor roles across Frontend, Backend, Cloud Infrastructure, Salesforce, and legacy modernization. Three cases below describe what Taller's engineering capacity supports at the lender.

The digital mortgage lender operates a proprietary AI-driven homeownership platform integrating search, origination, title and closing, servicing, and personal finance. It is built and run in-house. As the company scaled the platform and absorbed acquisitions (a real estate search platform, a mortgage servicing company), the engineering function required expanding capacity across Frontend (Angular 17+), Backend APIs, Cloud Infrastructure, Salesforce, and legacy-system modernization without compromising platform stability.

Taller engineers contribute capacity across the lender's engineering organization at individual contributor levels: Senior and Staff Frontend Engineers on Angular 17+, Senior and Staff Backend Engineers on the lender's API layer, Lead and Senior Cloud Infrastructure Engineers on the AWS substrate, and a Senior OpenEdge Engineer signaling legacy-system modernization in 2026. The engagement opened in 2025 with sustained delivery through 2026.

Sustained 2025-2026 engagement with positive performance ratings across the team. Sample client commentary reflects consistent positive reception: engineers integrated quickly, built credibility through early delivery, and were welcomed into existing teams.

The digital mortgage lender's outcomes are significant: more than a trillion dollars in originations since inception, billions in volume in the first full year of the platform's operation, ninety-six percent of U.S. eClosings at peak, and more than one million eClosed mortgages cumulatively. These are the lender's outcomes earned by the lender's proprietary digital-mortgage operating system, its in-house product engineering, and the AI-driven platform it has built. Taller's contribution is the engineering capacity the lender has added to its existing teams since 2025 across Frontend, Backend, and Cloud Infrastructure.