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Tushar B.
@tab_legion
CTO, Full Stack Engineer, NextJS, NodeJS, AI SaaS and Agents
India
English, Hindi, Marathi
About me
Zero to 30,000 visits a month on pure automation: an agent researches, writes and publishes every morning, and I approve it once. That's my own product, built end to end.
My code is merged at Expensify, a Featured Client here. Primary engineer on a public post-quantum protocol, 990+ commits. CTO, 8 years building software.
I build SaaS MVPs and AI web apps in Next.js, React, Node and PostgreSQL, AI agents and automations that run daily, and I rescue apps built fast in Lovable, Bolt or Replit. Auth, payments, admin, RAG chatbot, deployed, source in your repo.
Skills
Tushar B.
Offline •
See my services
Full Stack Web Applications
I will be your full stack web developer software developer for saas mvp and ai web app
Automations & Agents
I will build ai agents and n8n ai automation workflows with claude and python
Portfolio
Work experience
Chief Technology Officer
The AI Lab • Full-time
May 2025 - Present • 1 yr 4 mos
Primary engineer of the Trust Identity Protocol, a post-quantum federated trust protocol for content provenance and identity (public repo, over 990 commits, top contributor). Built the backend: FIPS 203/204/205 signature stack, DAG consensus pipeline, media layer, and the operational hardening for a live distributed system, including a 29x signing optimization via native OpenSSL. Also shipped the browser extension, verification-provider apps and content fingerprinting across the ecosystem.
Modern Softwares
Full-time • 3 yrs 5 mos
Senior Software Engineer
Dec 2023 - May 2025 • 1 yr 5 mos
Led delivery of client products end to end: a coupon-management platform, canvassing and field-ops apps, an electronic records system for a medical client, e-commerce and inventory tools, and healthcare data pipelines (web scraping, research-paper metadata extraction, audio transcription, PII redaction). Moved the team to TypeScript, Next.js and NestJS on PostgreSQL, set up Docker deployments, and mentored a junior developer. Became Head of Technology for the healthcare AI product in 2025.
Junior Data Scientist
Dec 2021 - Dec 2023 • 2 yrs
Started as the first technical hire and grew into full-stack delivery within months. Built and shipped client applications end to end: field canvassing and survey apps, a news app, data import and relay tools, and a Twilio Flex contact-center integration. Stack: PHP/LAMP, React and Node.js, MySQL, AWS. Learned to own a project from requirements to deployment while working directly with US clients.
57 Reviews
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gershonah
United States
My experience was better than I expected
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boomersooner66
United States
Awesome job!!
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cardr230
United States
Ongoing collaboration
What an OUTSTANDING Job!! This guy knows what he's doing. He is over the top with Great work.
$50
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rocavelliii1
United States
Ongoing collaboration
Always great to work with! excellent service & overall experience! One of my favorite partners on fiverr. Thanks for continuing to help me on my projects!
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kridolmusic
Canada
Amazing work! Good communication, always answers in minutes and really is there for me. Excellent experience overall I would recommend this for any friend
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