Vijay Kumar · Senior Backend Engineer & Production AI

Work Experience

2023 - Now
Cimpress Technology
Senior Software Engineer
2021 - 2023
Cimpress Technology
Software Engineer
2021 - 2021
Quotient Technology
Software Intern
2020 - 2021
Upwork
Freelance Engineer
2019 - 2021
Chegg
Computer Science SME

My Areas of Expertise

TypeScript

Java

Python

Go

PostgreSQL

MongoDB

DynamoDB

OpenSearch

React

Express

Node.js

Spring Boot

Next.js

NestJS

FastAPI

Claude

OpenAI

LangGraph

AWS

Docker

Kubernetes

ECS

Fargate

GitLab

Terraform

CloudFormation

Recent Projects All Projects

justrefer.me - AI-Ranked Referral Requests screenshot

justrefer.me - AI-Ranked Referral Requests

ihateheic.com - In-Browser Photo Tools screenshot

ihateheic.com - In-Browser Photo Tools

Content Magic AI - Text To Video screenshot

Content Magic AI - Text To Video

Credit Card Quest - Find Perfect Credit Card screenshot

Credit Card Quest - Find Perfect Credit Card

Software Architecture & Domain Knowledge See projects

I've worked on fulfillment and logistics systems and e-commerce coupon platforms, building event-driven, serverless and microservice architectures, the busiest at 30M+ events a day. I also ship production AI agents and LLM tooling. I aim for systems that are simple to reason about, resilient when things fail, and easy to observe in production.

Fulfillment and Logistics

Production AI & Agents

Event-Driven Architecture

Microservices

Distributed Systems

Serverless

🚀 Backend systems at 30M+ events a day 💻 🤖 Production AI that cut repeat on-call queries by 70% and token cost by 50% 🚀

Let's Collaborate