Vigneshwar S
Balakrishnan
Technical Architect · Principal Information Systems Engineer
12+ years architecting and delivering high-scale full-stack solutions across fintech and enterprise. I design scalable distributed microservices, multi-tenant platforms, white-label products, and developer experiences that power millions of users.
12+
Years Experience
5M+
Loans Governed
40+
Microservices Migrated
About Me
Turning complexity into
elegant systems
I'm Vigneshwar Balakrishnan, a Full Stack Technical Architect with over 12 years of experience building and scaling enterprise-grade web applications.
Currently serving as Principal Information Systems Engineer at Rocket Companies (Formerly Mr. Cooper) — in Dallas, Texas, architecting high-impact digital transformation initiatives across fintech and enterprise mortgage platforms.
My expertise spans the full delivery lifecycle: from whiteboarding distributed system designs to shipping production-ready features with React, Node.js, and cloud-native tooling. I've led critical fintech products — including pandemic forbearance solutions and customer self-service platforms — that directly serve hundreds of thousands of homeowners across the US.
I'm passionate about clean code, event-driven architecture, and empowering teams to build with confidence.
Architecture First
Designing scalable, event-driven microservices architectures for fintech platforms serving millions of customers.
Full Stack Depth
End-to-end ownership from React UIs and Node.js APIs to cloud infrastructure on Azure and Google Cloud.
Performance at Scale
Optimizing high-traffic applications with Redis caching, Kubernetes orchestration, and distributed systems.
Technical Leadership
Leading cross-functional engineering teams, driving design reviews, and mentoring developers across the stack.
Career Journey
Experience & Education
Technical Architect — Principal Information Systems Engineer
Jul 2018 – PresentRocket Companies (Formerly Mr. Cooper)
Dallas, Texas, USA → Relocating to Chennai, India
Progressed through 5 levels: Software Engineer I → Software Engineer II → Senior Software Engineer → Lead Engineer → Principal Architect
- Architected zero-downtime cloud migration using the Strangler Fig pattern — phased 40 interdependent microservices and on-prem DB servers to Azure/GCP, designing rollback safeguards, ADRs, and cross-team execution playbooks
- Designed enterprise-scale OAuth 2.0 API Management gateway via Azure APIM and Apigee — reduced API latency by 80%, governed API security across 5M+ loans, and established org-wide authentication standards adopted across all platforms
- Architected event-driven HELOC and Mortgage Payment solutions — implemented Outbox Pattern for guaranteed at-least-once delivery and designed Kafka-based event streaming pipelines for real-time payment processing at scale
- Led Rocket Mortgage platform integration — defined API contracts, data mapping, and orchestration workflows using Saga pattern to coordinate distributed transactions between two of the largest US mortgage platforms
- Architected multi-brand white-label mortgage servicing platform on a shared multi-tenant architecture; delivered Forbearance, Payments, Digital Home Advisor, and One-Time Links as Technical Lead using CQRS and Circuit Breaker patterns
- Defined reference architectures, led architecture review governance, and authored ADRs adopted across 5+ product teams — establishing engineering standards for microservices, event-driven systems, and cloud-native design
Analyst — Full Stack Engineer
May 2017 – Jun 2018Verizon Data Services India
Chennai, India
- Designated Full Stack Engineer for the Integrations Operations Portal — a real-time network monitoring system providing a single pane of glass for network engineers.
- Developed interactive UI and REST services with real-time event scheduling using Socket.IO and RabbitMQ.
Project Engineer — Full Stack Developer
Sep 2014 – Apr 2017Wipro Digital
Bangalore, India
- Engineered a reusable frontend component library for Lloyds Banking Group, one of the UK's largest banks.
- Full-stack developer on Quizart, an internal BFSI LOB application, delivering responsive layouts and Node.js services.
Bachelor of Engineering — Electronics & Communications
Sep 2010 – Jun 2014Sri Krishna College of Technology
Coimbatore, India
- Graduated with specialization in Electronics & Communications Engineering.
Toolkit
Skills & Technologies
Languages
Frontend
Backend
Databases
Messaging
Cloud & DevOps
API & Security
Architecture
Practices
Monitoring & Observability
AI & Productivity Tools
Certifications
Featured Work
Projects & Impact
Zero-Downtime OnPrem → Cloud Migration
Rocket Companies · Principal Architect
Architected and personally executed the full migration of on-premises database servers and 40 interdependent scalable, distributed microservices to the cloud with zero downtime using the Strangler Fig pattern — phased execution strategy, rollback safeguards, ADRs, and cross-team coordination across infrastructure and application teams.
Architect's Role
Sole architect and execution lead — designed the migration strategy using Strangler Fig, sequenced service cutovers, authored ADRs, and ensured data integrity throughout the transition.
OAuth-Secured APIM Gateway — Apigee
Rocket Companies · Principal Architect
Designed and implemented a large-scale OAuth 2.0-based API Management gateway using Azure APIM and Apigee — reduced API latency by 80%, securing and governing API access across the entire loan servicing ecosystem covering 5+ million loans.
Architect's Role
Lead architect for the Azure APIM and Apigee integration and OAuth security model — defined gateway policies, rate limits, and authentication flows. Reduced API latency by 80% and established org-wide authentication standards.
Event-Driven Payment Architecture
Rocket Companies · Principal Architect
Designed event-driven HELOC and Mortgage payment solutions using Outbox Pattern for guaranteed message delivery and Kafka event streaming for real-time processing. Eliminated dual-write inconsistencies across distributed payment services.
Architect's Role
Designed the end-to-end event architecture — Outbox Pattern implementation, Kafka topic strategy, consumer group design, and idempotency guarantees across payment services.
Rocket Mortgage Integration
Rocket Companies · Principal Architect
Led the technical integration between Mr. Cooper and Rocket Mortgage — aligned complex loan data models, APIs, and servicing workflows across two of the largest US mortgage platforms using the Saga pattern for distributed transaction coordination.
Architect's Role
Architected the integration layer — data mapping, API contracts, and Saga-based orchestration workflows ensuring seamless loan transfer and eventual consistency across platforms.
White-Label Servicing Websites
Rocket Companies · Principal Architect
Architected white-label mortgage servicing products on a shared multi-tenant platform using CQRS and Circuit Breaker patterns, enabling branded digital experiences for partner servicers at scale.
Architect's Role
Led the architecture of the white-label platform — multi-tenancy design, theme system, CQRS implementation, Circuit Breaker patterns, and CI/CD pipeline setup.
Forbearance Application
Rocket Companies
Pandemic-era loan relief platform enabling customers to pause mortgage payments and enter modification workflows. Reached 100K+ homeowners during COVID-19.
Digital Home Advisor & One-Time Links
Rocket Companies
Customer self-service platform with live chat, digital advisory, and secure one-time access links to drive digital adoption.
Integrations Operations Portal
Verizon Data Services
Real-time network monitoring platform — a single pane of glass for network engineers across Verizon's infrastructure.
Lloyds Banking Group — Frontend Library
Wipro Digital
Reusable React component library for one of the UK's largest banks, and co-developed Quizart — an internal BFSI learning app.
Get In Touch
Let's Connect
I'm open to discussing architecture consulting, technical leadership roles, or just connecting with fellow engineers.