01

Hi, I'm Hemant

Full-stack builder. Product-minded engineer. Shipping useful things.

I build AI-powered SaaS products, automation tools, and modern web apps with React, Next.js, Node.js, and PostgreSQL. Open to strong product teams and cool collabs.

Download Resume
#FullStack
#SaaS
#Automation
#OpenSource
#NextJS
Hemant Kumar
02

About

I'm Hemant Kumar, a full stack developer focused on product engineering, SaaS workflows, and practical automation. I like building systems that feel fast, clear, and useful.

My recent work spans user management, billing, APIs, queue processing, dashboards, and AI-assisted products. Most of my projects start with a real workflow problem and end with something production-shaped.

Right now I'm going deeper into scalable backend systems, strong frontend execution, and thoughtful product design. Always open to great teams and interesting builds.

Ships side projects that solve real problems
Open to SaaS and product engineering roles
Enjoys clean interfaces and clean APIs equally
03

Experience

Work that improved products, speed, and workflows.

Jul 2025 - Present

Full Stack Developer

Attack Capital

New York City, US · Remote

Leading AI product development and full-stack platform work across Healos, with production delivery spanning AI Scribe, AI Voice Agent, email campaigning, multi-tenant architecture, and cloud infrastructure.

> Led a 3-member team delivering 3 core products on Healos: AI Scribe, AI Voice Agent, and an Email Campaigning Platform using OpenAI GPT, Gemini API, and LangChain

> Built real-time speech-to-text pipelines with Whisper and Deepgram, plus RAG pipelines with pgvector for context-aware note retrieval and semantic search across medical knowledge bases

> Engineered multi-step prompt chains for accurate, structured clinical summaries and voice-driven workflows

> Designed a secure multi-tenant system with complete data isolation across clinics and clients, improving user engagement by 25%, reducing API response time by 25%, and decreasing UI bugs by 20%

> Improved high-load system performance by 40%, reduced script execution time by 45% through advanced PostgreSQL query optimization, and containerized the full stack with Docker

> Deployed and managed API servers on GCP using VMs and Container Apps with Nginx load routing, while implementing Grafana monitoring, logging, and database backup strategies

Nov 2024 - Jul 2025

Full Stack Developer

India Accelerator

Gurugram, India

Built and maintained the internal management portal end-to-end, owning both frontend and backend across a fast-moving accelerator environment. Focused on performance, reliability, and shipping clean, scalable systems.

> Boosted system performance by 40% under load by implementing optimized RESTful APIs, refactored database models, and improved request handling on a Node.js/Express backend

> Cut API response times by 25% through scalable backend architecture improvements and strategic query optimization

> Improved user management efficiency by 30% by streamlining core portal workflows and admin capabilities on the internal ops platform

> Delivered responsive React.js UI components that lifted user engagement by 35% and reduced UI-related bugs by 20%

> Automated 50% of manual internal workflows by collaborating with cross-functional teams to upgrade tooling and expand admin functionality, significantly reducing operational overhead

Jun 2023 - Jul 2023

Web Developer Intern

RT map Tech Solutions

Jaipur, India · Remote

Built using the MERN stack, with a strong focus on Node.js, React, and modern ES6+ JavaScript features for clean, efficient development.

> Delivered a responsive frontend, applied code refactoring, and implemented best practices and design patterns to ensure a robust and maintainable structure

> Drove a 15% increase in user adoption through improved usability and cleaner product flows

> Cut script execution time by 50% and improved user management efficiency by 30%, enhancing overall platform performance

04

Projects

Things I've built and shipped.

Global + AISearch, scraping, alerts

Featured Project

Global Price Comparison Tool

Next.jsSupabaseCheerioDocker

A global comparison platform that scrapes marketplaces, matches products intelligently, and alerts users to price drops across regions.

Live on Vercel · Global search + product intelligence

View Project
Next.jsPrismaSupabase

GitHub Repo Tracker

Tracks public repos and sends updates for issues, PRs, stars, and releases.

Email alerts powered by Resend

View Project
ReactNode.jsPostgreSQL

Resume Expert

AI resume builder with role-aware suggestions, preview, export, and ATS-focused improvements.

AI-assisted resume generation

View Project
ReactNode.jsDocker

Form Scratch

Generates dynamic forms from prompts, with branching, exports, and webhook support.

Prompt-to-form workflow

View Project
ReactNode.jsMongoDB

Job Cloud

A dual-role job platform for posters and seekers with profile management and resume uploads.

Recruitment workflow platform

View Project
Node.jsPuppeteerCron

Job Alert Bot

Scrapes listings and sends Telegram/email alerts based on role and location preferences.

Telegram + email automation

View Project
ReactTailwindshadcn/ui

Passkey

A lightweight password manager for local credential storage and fast retrieval.

Browser-first utility tool

View Project
05

Skills

Frontend, backend, data, tooling.

Languages

JavaScriptTypeScriptPythonSQL

Frontend

React.jsNext.jsTailwind CSS

Backend

Node.jsExpress.jsRESTful APIsFastAPIRedisTask QueuesKafkaPrisma ORM

Databases

MongoDBPostgreSQLpgvectorSupabase

AI & LLM

OpenAI API (GPT)Gemini APILangChainPrompt Engineering

AI Infrastructure

WhisperDeepgram (STT)RAG PipelinesVector EmbeddingsSemantic Search

Tools & Technologies

Git/GitHubDockerLinuxVS CodePostmanFigmaNotionGCP

Resume

Hemant Kumar

Full stack developer with experience across SaaS products, automation, APIs, dashboards, and modern web applications.

> BTech in Computer Science

> Shaheed Bhagat Singh State University

> Sep 2021 - May 2025

Let's build something.

Open for product roles, freelance builds, and good engineering conversations. Let's talk.

kumarhemant9971@gmail.com