Cloud Solution Architecture for VA's Loan Guaranty Program
Cloud-native architecture and modernization-strategy evaluation for a VA Loan Guaranty program serving lenders, servicers, appraisers, and secondary-market entities, delivered across nearly four years as a horizontal solution architect inside a large-scale SAFe program.
~4 yrs
Dedicated Solution Architect
3
Modules Owned (C&V, Eligibility, SPR)
3
Platform Pivots Navigated
Client-Facing
Promoted After Leadership Recognition
The Challenge
A Legacy System at the Center of a Multi-Stakeholder Ecosystem
VA's Loan Guaranty program ran on WebLGY, a legacy system that had grown too outdated to keep pace with a modern, standards-based mortgage ecosystem. Lenders, servicers, and appraisers were left transcribing data by hand instead of exchanging it system-to-system.
VA's response was ambitious: consolidate a sprawling set of LGY systems into one integrated Product Line, delivered through a large-scale SAFe program, without a single prescribed modernization path to follow.
The legacy WebLGY system had become too outdated and complex to functionally coexist with the modern LGY ecosystem, forcing thousands of external industry participants (lenders, servicers, appraisers) to manually transcribe data rather than exchange it system-to-system
Shifts in the mortgage industry required VA to accelerate delivery of new products and consolidate disparate LGY systems into a single, integrated LGY Product Line using SAFe methodologies
Modernization required a genuine choice among competing approaches, lift-and-shift, refactor, or re-platform, rather than a single prescribed path
The program spanned a multi-stakeholder ecosystem: lenders, appraisers, servicers, and secondary-market entities including Fannie Mae and Freddie Mac, each with different integration needs
Business requirements had to be translated into coherent technical solutions across a large-scale SAFe structure of Agile Release Trains, Feature Teams, and Solution Teams
Our Approach
Evaluate the Path, Then Architect for the Whole Ecosystem
Modernizing a federal loan program isn't a single technical decision. We chose a deliberate path among competing modernization strategies, then architected for every stakeholder who depends on the system, not just VA's own teams.
Own a Module End to End
Dedicated architect for Construction & Valuation: studied the existing system, designed each enhancement, ran it through review and approval with VA's technical and business leads, and, uniquely in this phase, led the team that built and shipped it.
Expand Scope, Design for the Client
Scope grew to include Eligibility and Single Person Record. Designed cloud-based solutions for core new requirements across all three modules, then handed approved designs to a dedicated delivery team.
Re-Architect Through Shifting Strategy
VA's platform direction shifted more than once, from Pega/Appian to AWS or Salesforce and back. Re-authored and re-presented solution designs for Eligibility, SPR, and Construction & Valuation each time, including a full overhaul of the appraiser module.
“I built a working prototype to replace a legacy tool that was falling behind. That prototype is what put me in front of VA's technical and business leads directly, for every major Construction & Valuation decision, for the rest of the engagement.”
Ashish Nagpal, Solution Architect, VA Loan Guaranty Program
The Solution
Cloud-Native Architecture Across a Multi-System Ecosystem
We architected serverless, standards-based integration across the systems that lenders, servicers, appraisers, and secondary-market entities depend on.
Serverless Batch Correspondence Pipeline
Designed an event-driven Step Functions pipeline: bulk template data written to S3, triggered via EventBridge, fanned out per-record through a Map state, PDF generation via iText, and status tracked from Pending to Generated before routing to print, with configurable retry, fallback, and concurrency controls.
From Prototype to Client-Facing Architect
Identified that the legacy correspondence tool was falling behind, evaluated modern alternatives, and built a working serverless replacement. Program leadership recognized the work and made him the client-facing architect for all significant Construction & Valuation decisions from that point forward.
Cloud-Native Systems Integration
Architected AWS-based integrations connecting VALERI/VALERI-R (the core loan-servicing and oversight system), WebLGY/LGYHub, and appraisal/valuation systems for a multi-stakeholder ecosystem spanning lenders, servicers, and GSEs.
Modernization-Strategy Evaluation
Evaluated lift-and-shift, refactor, and re-platform approaches, recommending a path aligned to VA's cost, performance, and operational goals for LGY Product Line consolidation.
Mortgage-Industry Data Standards Adoption
Applied MISMO v3.3 standards (Uniform Closing Dataset, Uniform Loan Application Dataset, Uniform Loan Delivery Dataset), supporting the program's move toward standardized, system-to-system data exchange.
Cross-Program SAFe Leadership
Served as a horizontal Solution Architect, moving across Agile Release Trains, Feature Teams, and Solution Teams wherever architecture support was needed, rather than staying fixed to a single value stream.
The Impact
Trusted With the Client Relationship, Not Just the Architecture
1
Prototype that changed his role
A working replacement for a failing legacy tool led program leadership to put him in front of VA directly
3
Modules owned over the engagement
Construction & Valuation from day one, then Eligibility and Single Person Record
3
Platform strategies navigated
Pega/Appian, then AWS or Salesforce, then the other, re-architected each time without losing ground
~4 yrs
As the dedicated architect
Aug 2021 to May 2025, spanning early hands-on delivery through senior client-facing design authority
The serverless pipeline in detail
A scheduled job writes bulk template data to S3, triggering a Step Functions state machine that fans out per-record work through a Map state, generating each PDF via iText, updating status from Pending to Generated, then zipping the output for print, with configurable retry, fallback, and concurrency controls built into every state.
Event-Driven
S3 → EventBridge → Step Functions
Configurable
retry · fallback · concurrency
A Multi-Stakeholder Ecosystem
Every architecture decision had to account for lenders, servicers, appraisers, and secondary-market entities including Fannie Mae and Freddie Mac, not just VA's own internal systems, since the LGY program exists to serve that broader ecosystem.
A Fixed Home, a Program-Wide Reach
Our architect held dedicated ownership of Construction & Valuation, later expanded to Eligibility and Single Person Record, while working horizontally across the program's Agile Release Trains and Solution Teams wherever that ownership required it, a role built for programs too large for one team to own end to end.
Technologies Used
The Stack Behind the Solution
Cloud & Compute
- AWS Lambda
- AWS Step Functions
- Amazon EventBridge
- Amazon S3
- AWS IAM
- AWS X-Ray
Platform Integration
- Salesforce (Dev Orgs, LDAP)
- Oracle
- IBM Rational (Test-Case Management)
- Jenkins CI/CD
Standards & Delivery
- MISMO v3.3 (UCD · ULAD · ULDD)
- SAFe (Scaled Agile Framework)
- Jira
For Federal Program Managers
Federal-Specific Considerations
How this capability gets procured, governed, and sustained in a federal environment.
Procurement Path
This capability was delivered as a technology subcontract through an established federal prime contractor on an active VA modernization program. It is available to prime contractors as a cloud solution architecture subcontract under NAICS 541512 or 541511. Explore teaming →
Multi-Stakeholder Systems Integration
The LGY ecosystem reaches well beyond VA's own systems: lenders, servicers, appraisers, and GSEs like Fannie Mae and Freddie Mac all depend on it. Architecture decisions were made with that full ecosystem in view, not just VA's internal requirements.
Agile-at-Scale Governance
Delivered inside a SAFe program organized around Agile Release Trains, Feature Teams, System Teams, and Solution Teams. A horizontal, cross-cutting Solution Architect role is a governance pattern worth recognizing for programs too large for one team to own end to end.
Have a Similar Challenge?
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