Sarthak Agrawal

• Created a Financial Planning Service (Go, MySQL) and wrote proprietary logic to calculate clients’ financial health score.
• Migrated multiple workflows to Temporal, eliminating 90% of unexpected failures and freeing engineering ~3 hrs/day.
• Transitioned the web app from MUI to Tailwind; built multiple responsive frontend components in React.

• Developed a real-time pipeline for stock data using Go, Kafka and Protocol Buffers — helped DAU grow from 15k to 200k in 14 weeks.
• Integrated vector-powered personalized feeds using BERT embeddings, GPT calls and Milvus as the vector DB — 40% more engagement on the home feed. Built a pipeline with real-time events from BigQuery for richer user vectors.
• Built multiple (support, learning, assistant) RAG-based chatbots using OpenAI APIs; the moderation bot reduced human intervention in support queries by 90%.
• Wrote a microservice in Node.js with MySQL (Prisma) for complete stock-fundamental data lifecycle management.
• Built hot news with read/unread and last-visit tracking — tripled average news scroll count in 3 weeks. Used ClickHouse as the data aggregator with RudderStack as the pipeline.
• Implemented O(1) space/time retrieval of a user’s unread news and global notification counts using Redis.
• Integrated the Razorpay payment gateway with Node.js — a new revenue source and a 50% increase in overall revenue.
• Implemented queue-based batching to improve database efficiency; optimized session handling with granular controls, reducing session-refresh DB calls by 92%.
• Improved SEO performance by cutting HTML build and load time from 600ms to 60ms via Redis caching.
• Incorporated FCM topic-based notifications, reducing delivery time by 90% and increasing delivery rate by 30%.
• Planned and integrated real-time stock ticks via Socket.io with three modes: room-based, in-memory, or Redis for subscription management.

Stumble — Social App

Node.js, PostgreSQL (PostGIS), Redis, Docker, AWS, Flutter, Astro, Python

• Launched a platform to help users connect with people nearby, encouraging meaningful in-person interactions.
• Supported real-time chat, location-based profile filtering, face recognition, Google auth and push notifications.

SignificantHobbies — Life Management App

Next.js, Golang, PostgreSQL, Docker, AWS, Tailwind

• Launched a personal productivity app to manage tasks, habits, food logs, journals and schedules.
• Designed custom form validation, preference-based schedule generation and efficient CRUD operations.

PlayWordle — CLI Puzzle Solver

Golang

• Devised a CLI application to solve New York Times Wordle puzzles with over a 97% success rate.