RohitChauhan

Software Engineer — I build production SaaS end-to-end: multi-tenant systems, AI voice, payments, and event-driven backends.

Model Littlest Tokyo — Glen Fox, CC BY

About

Ibuildinterfaceswhereengineeringmeetsvisualexperience.

Hi, I'm Rohit Chauhan, a Software Engineer with 2+ years of experience shipping production SaaS end-to-end — multi-tenant architecture, AI voice and telephony, payments, and event-driven backend systems. I see coding as more than a profession — it's a craft that blends creativity, logic, and purpose.

I specialize in building full-stack applications with Next.js, React, FastAPI, and PostgreSQL on AWS, along with tools like TypeScript, SQLAlchemy, Docker, and Redis. My focus is on writing clean, maintainable code and designing systems that are as reliable as they are innovative.

Currently, I'm building an AI-powered healthcare accounts-receivable platform at Agile Receivables — sequenced email/SMS/AI-voice outreach, Stripe payments, and durable campaign execution at scale. I'm constantly exploring new trends in AI, automation, and cloud computing, always striving to learn, adapt, and push the boundaries of what's possible.

When I'm not coding, you'll probably find me experimenting with new tools, contributing to open-source projects, or helping others grow in tech. I believe in the power of collaboration — and I'm always excited to build something extraordinary together.

Experience

Selectedroles

2026

Mar 2026 — Present

Software Engineer · Agile Receivables

Chicago, IL · Remote

Building the core product: an AI-powered healthcare accounts-receivable SaaS where dental and medical practices ingest patient balances, run sequenced outreach (email → SMS → AI voice), and collect via Stripe. Owning major pieces of the architecture end-to-end — a modular monolith with a Next.js / React / RTK Query client, a FastAPI + SQLAlchemy API on AWS Lambda, and durable campaign execution on SQS + EC2 against PostgreSQL, with multi-tenant isolation via Cognito JWT. Designed and shipped Voice Agent Studio, a tenant-facing control plane over Retell AI, letting each company clone its own compliance-approved AI voice agent.

Next.js · React · RTK Query · FastAPI · SQLAlchemy · PostgreSQL · AWS Lambda · SQS · EC2 · Cognito · Stripe · Retell AI · Twilio

2025

Jan 2025 — Jan 2026

Software Development Engineer · Crux-Sphere Technologies

Remote · Full-time

Designed and shipped 15+ full-stack applications end-to-end using Next.js, React Native, TypeScript, Node.js, and Python, taking each from client requirements through production deployment. Led client-facing discovery calls and translated business requirements into MVP architectures, acting as the primary technical point of contact for several accounts at once. Built and maintained backend services and RESTful APIs powering responsive web and cross-platform mobile apps.

Next.js · React Native · TypeScript · Node.js · Python · MongoDB · TailwindCSS · AWS · Microservice-Backend · DigitalOcean

2024

Jul 2024 — Dec 2024

Software Development Intern · Crux-Sphere Technologies

Remote · Internship

Built full-stack applications (Language Sikho, Xingle, LifeArtistry) using Next.js, TypeScript, MongoDB, and TailwindCSS, from scaffolding through client sign-off, as part of a 5-member team, with deployments on AWS, Vercel, and DigitalOcean.

Next.js · TypeScript · MongoDB · TailwindCSS · AWS · Vercel · DigitalOcean

Agile Receivables website preview

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Agile Receivables

Multi-tenant AI collections SaaS for healthcare practices to import AR, run email/SMS/voice campaigns, and collect payments — visual campaign builder, Stripe Connect checkout with HMAC-signed patient links, and AI voice agents with live mid-call tools (identity verify, pay-by-phone). FastAPI backend with Cognito JWT auth, tenant isolation, SQS + EventBridge campaign engine, and a Next.js + RTK Query dashboard on Terraform-managed AWS.

FastAPI · PostgreSQL · Stripe · Twilio

FastAPI · PostgreSQL · Stripe · Twilio

JobHunter website preview

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JobHunter

Full-stack AI-powered job application assistant (~16K LOC) with a Chrome MV3 extension that auto-fills Greenhouse, Lever, Workday, and Ashby forms using ~30 custom field classifiers and AI-generated answers from 6 pluggable LLM providers. Backed by an Express + Prisma API (JWT, Zod, rate limiting, SSRF protection, Razorpay billing with HMAC-verified webhooks) and a Next.js dashboard for profile, AI settings, and application tracking.

TypeScript · Chrome MV3 · Next.js · Express

TypeScript · Chrome MV3 · Next.js · Express

Toolkit