Vivek Patel

KPMG Sofy Suite is a multi-tenant enterprise platform used by banks and hospitals. As architecture owner for the platform's import and export pipelines, I led a data team of three to four engineers.

I scaled CSV/Excel import/export from 1 – 10GB to a reliable 50 – 100GB via an event-driven architecture with idempotent replay for safe retries. When the pipeline hit a Node.js performance ceiling, I benchmarked Java, .NET, C#, Python, and Go, and then rewrote it in C# on Azure Functions, achieving a major throughput gain.

I worked on dynamic multi-tenant provisioning on Azure PaaS—a new database and blank schema per tenant, automated migrations across all tenants, and per-tenant environment variables and domains—and attribute-based access control and per-tenant isolation (roughly 10,000 users/tenant) via PostgreSQL Row-Level Security, and JWT and SSO/SAML auth with Azure Key Vault.

I worked on dynamic dashboards and conditional forms generated from client-defined schemas, as well as a Puppeteer-based PDF-generation microservice for dashboard exports.

I also spent three months on-site at KPMG's Amstelveen, Netherlands headquarters for client delivery and production issue resolution.

Chime is a full-stack platform for detecting misinformation trends on social media and running counter-messaging ad campaigns to combat them, built for a research/civic-tech context that pulls data from a Georgia Tech research API.

I built it from scratch, with React and TypeScript on the front end, Node.js, Express, TypeScript, and MongoDB on the back end. The detection side pulls tweet-volume trends, social network graphs, and spreader analysis from Georgia Tech's research APIs into real-time claim-detection dashboards, visualized with Highcharts and Sigma.js and Graphology network graphs.

For counter-messaging, I built a multi-platform ad-publishing engine that integrates Facebook, Instagram, Twitter Ads, and YouTube (Google Ads) APIs, enabling teams to create campaigns and ad sets with location, interest, and lookalike targeting. After launch, teams could track ad performance (impressions, clicks, views) and run A/B tests by splitting audiences into groups to compare ad versions.

I also implemented role-based team and publisher access control, AWS Cognito/Amplify authentication, and Stripe subscription billing with webhook-driven budget management.

Tenakata is a USSD (mobile menu) application for a business/finance app, supporting sales, cash-out, and referrals—accessible on any basic phone with no app or internet connection required.

I built the Node.js/Express backend powering the USSD flow, designing a custom state-machine engine to manage conversation state. Each screen was defined by regex or exact-match transitions with its own handler, making the menu easy to extend as new flows were added.

I used Redis for session state management across USSD requests, since each interaction is stateless at the telecom layer, and secured the flow with JWT-based session authentication so users could complete multi-step actions safely. I deployed and configured the service on AWS EC2 using PM2 for process management to improve reliability.

TransientCard is a serverless, self-expiring form-sharing system built on Azure, used to collect sensitive user data (e.g., document uploads, personal details) via secure, one-time-use links that automatically expire.

I built an Azure Logic App workflow to orchestrate the form lifecycle—generating an Adaptive Card-based form, producing a shareable link, and using an HTTP webhook to wait asynchronously for submission before continuing. I developed two separate Azure Functions apps (Node.js) in a public/private split: a public-facing function proxies safe requests, while a secured back-end function handles token validation and data storage, keeping sensitive logic inaccessible from the internet.

I implemented JWT-based, time-limited access tokens with automatic link invalidation upon submission or expiry, backed by Azure Table Storage to persist form state. I configured Managed Identity authentication between the Functions and Logic App, so no credentials needed to be stored between services. I also built dynamic, schema-driven Adaptive Card forms with regex-based field validation and file upload support, and authored setup/deployment documentation for repeatable deployment.