Applied AI engineer·Product builder·Systems thinkercurrently building

SiddhantVishnu

I enter unfamiliar systems, find the leverage, and build what should have existed.

I'm 21. I build AI agents and the evals that prove they work. Building Mirage and finishing Computer Engineering at PICT. I learn unfamiliar domains from first principles and ship before the opportunity is obvious.

See the systems ↓Resume ↗

9 eng led
16VC Fellow
YC SS India
600K views

A / Operating system

How I think
before I build.

Four operating rules. Different domains, same approach: enter the unknown, find what it responds to, and ship something that changes behavior.

Learn by entering

I build fluency by shipping inside unfamiliar systems, not by studying them from the outside. Real results, early, with limited resources.

Regulatory science, TB epidemiology, adaptive browsers

Talk to the users

I test reality instead of theorizing about it: customer interviews, demos, signups. Doubt is data, so I write it down before it disappears.

Validated learning beats a polished pitch

Direction > code

In the AI era, agents write code fast. Deciding what to build, and for whom, is the bottleneck. I set the direction first, before building.

The idea has to be right before the build matters

Distribution is the product

Writing, demos, and launches are not afterthoughts. They decide whether anything you build is ever found.

Demos, reels, and posts are how ideas survive contact

B / Systems entered

The dossier.

Each one was unfamiliar terrain. Each one shipped into reality with measurable impact.

01Froncort.AIHealthcare AI · 2025–2026Went from intern to Lead Engineer to Product Manager in about 12 months, across 3 enterprise healthcare-AI products.Led 9 engineers and the technical direction

RegDocRegulatory agentsFDA and EU-MDR-aligned domain agents that turn manual regulatory templating into compliance-ready documents.Cut regulatory documentation from weeks to minutes

AI NETRAPublic-health AIAgentic and geospatial inference for TB outbreak prediction and supply allocation. Built with FIND, backed by Google.org; demoed at the India AI Impact Summit 2026.Led field validation: 55.2% less screening effort

02MirageAdaptive web · co-founderA Chrome extension that edits any website from plain English, with agents at the core. Live on the Chrome Web Store: about 100 users and a 400-person waitlist.16VC Summer Founder Fellowship

03DistributionFounder-ledDemos, launch videos, and short-form loops used as product proof, including a post that reached 600K views.One post, 600K views

C / Selected builds