Manish Rana

Founding Full Stack Engineer

Zero-to-One Products · Fintech · SaaS · AI

Founding engineer with 7+ years building products from 0→1 across fintech, blockchain, SaaS, AI, and workflow automation. Repeated day-one / early-team ownership: architecture, shipping, auth, payments, APIs, and production infrastructure — not just tickets.

Comfortable wearing product + eng hats, iterating fast with founders, and owning systems end-to-end from MVP through scale. Startup strengths: zero-to-one delivery · full-stack ownership · product judgment · ambiguous problem-solving · shipping under constraints.

Outside of code, I recharge by traveling, exploring nature, and spending time with my kid—my best source of inspiration.

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✍️ Recent Blogs

August 10, 2026

How I Built UseDocs on Cloudflare: RAG, Agents, and Multi-Tenant Edge

The real architecture behind UseDocs: crawl → embed → cited answers on Cloudflare, with Durable Objects, Vectorize, metering, and honest escalation when confidence is low.

August 9, 2026

Cloudflare Dynamic Routes: From Workers to Multi-Tenant Paths

How dynamic routes work on Cloudflare Workers and Pages — path params, catch-alls, custom domains, and multi-tenant routing without drowning in config.

Check more →

Technical Skills

Frontend

React
Next.js
TypeScript
JavaScript
Vite
React Flow
Redux Toolkit
Tailwind CSS
Shadcn UI
Web3

Backend

Node.js
Express.js
REST APIs
Cloudflare Workers
AWS Lambda
Python
Salesforce Integrations

AI / RAG

Workers AI
Vectorize
Embeddings & semantic search
Google Gemini API
Multi-tenant AI product patterns

Auth & Payments

Better Auth
AWS Cognito (MFA)
Dodo Payments
Secure session & access control

Data

MongoDB
PostgreSQL
Cloudflare D1
R2

Cloud & DevOps

AWS
Cloudflare (Workers, DO, Queues, Vectorize, R2)
Vercel
Docker
Nginx
CI/CD
GitHub Actions
GitLab

Work Experience

Full Stack Developer

Reactivate (APEX-TEK)

Sep 2025 – Present

Own delivery of React / Next.js workflow products used in real business process automation.
Implemented production auth with AWS Cognito and MFA; multi-user access control.
Built a visual Process Compiler with React Flow (live node status, dynamic state UI).
Shipped backend automation with MongoDB, AWS Lambda, and Salesforce integrations.

Founding Full Stack Engineer

Blockpeer Finance

Nov 2022 – Sep 2025

Day-one founding engineer; MVP → production fintech systems.
Led Laravel → Node.js migration; rebuilt workflows in React / Next.js.
Owned payments, authentication, REST APIs, and AWS infrastructure.
Delivered TradeTrust document workflows; hardened production reliability.

Founding Full Stack Engineer

Stealth Startup (Fintech / Blockchain)

Feb 2019 – Oct 2022

Early full-stack engineer; frontend + backend from idea to live traffic.
Built React/Angular clients and Node.js services with API + transaction workflows.
Supported ICO/token-sale flows for 10K+ users and USD 10M+ transaction volume.
Contributed to identity features, APIs, and CI/CD for shippable releases.

QA Engineer

IVP

Jun 2018 – Jan 2019

Manual + Selenium automation for financial applications; reduced regression risk.
Reusable test suites that accelerated release cycles.

Featured Projects

UseDocs

AI support platform (RAG): multi-tenant crawl → cited answers → honest escalation when low confidence. Cloudflare architecture with usage metering, embeddable widget, Slack/Discord/Teams, and a docs-ops loop for gaps, digests, and analytics.

Cloudflare Workers, Agents SDK, Durable Objects, Workers AI, Vectorize, R2, D1, Queues, React, TypeScript, Vite, Better Auth, Dodo Payments

Visit project

Serenty

AI web product with Supabase workflows and Gemini-powered production UX.

Next.js, Supabase, Google Gemini AI

Visit project

AI Image Generation Platform

AI image product with API generation pipelines and responsive UI on Vercel.

Next.js, Python, Tailwind CSS, DaisyUI, Vercel, Stable Diffusion API

Education

🎓

B.Tech. Computer Science Engineering

Sharda University

2014 – 2018