• Built a SaaS web app for wealth management which simulates taxable cash flow and asset portfolios in various market conditions. Brought the idea from conception to MVP, and then to revenue.

• Payments are processed by Stripe and then relayed through webhooks. Payments included metered billing. Customers manage billing through Stripe Customer Portal.

• Set up container-based (Docker) infrastructure in AWS using ECS/Fargate, and Route 53, developed RESTful API in Node / Express.js which implements JWT-based authorization and persists to Postgres-compatible AWS Aurora.

• Built web UI with React, Next.js, and AntD. Printing PDF reports which are designed with web standards and React.

• Integrated with LLMs: entity classification with GPT-3.5, entity extraction with GPT-4, and WhatsApp-based language UI with fine-tuned GPT-3.5. Entity extraction is implemented with Python / FastAPI.

• Built and published iOS and Android applications with React Native which includes authorization flow, the user’s inbox, and recording mic input which is then uploaded to AWS S3 with a pre-signed link. Mobile apps support offline operation including addition of new entries to the inbox.

• Implemented multiple shelves in the Facebook newsfeed focused on various use cases of virtual reality including fitness, media, and social experiences with deeplinks into VR. This required Hacklang coding and coordination with dev relations, public relations, and privacy departments.

• Built and launched people-you-may-know push notification in the mobile app and within virtual reality. The notif drove ~30\% increase in friend requests sent.

• Built friend import UI in the new user experience flow on mobile in React Native

• built a SaaS tool for tax-optimized retirement planning and wealth management which implements IRS taxation logic for various income types and account types

• implemented a delivery pipeline with prod, staging, and feature environments using Gitlab and Netlify following Gitlab Flow workflow

• built a React/Gatsby Progressive Webapp (PWA) delivered via Netlify CDN, the app is installable on mobile and desktop devices, partial offline support

• implemented infrastructure in AWS using ECS/Fargate, ECR, and Route 53

• developed RESTful API in Node (Loopback framework) with OpenAPI definition

• leveraged D3.js and SVG for data visualization

• implemented CPU-intensive computations of financial modeling on the client concurrently using web workers

• Set up Jenkins CI and release pipelines for Nx-based monorepo

• Containerized Jenkins builds in Docker to improve resource utilization of the build servers

• Led transition from Protractor/Selenium to Cypress integration testing engine

• Implemented centralized repo for code styleguides to standardize coding conventions across projects

• R&D'd and prototyped a Kubernetes cluster with Istio and Prometheus to demonstrate improved resource utilization, better flow of work, and consistency of the infrastructure