Sahil Jagtap
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I'm an engineer and founder. Previously co-founder and CTO at Airstitch (acquired) and creator of AgentBudget, an open-source library with 100k+ installs. Right now I'm building software for private capital firms - starting with distressed debt - alongside two cofounders with deep experience in private capital. I always reply.
What I'm building
Something new (in stealth) - software that helps private capital firms turn scattered deal data - PDFs, spreadsheets, data rooms, email - into better, defensible investment decisions, starting with distressed debt.
AgentBudget (demos) - an open-source library that enforces hard spending limits on AI agents, so a single run can't burn through your API budget. 100k+ installs, 100+ GitHub stars, now community maintained. There's a whitepaper on the design.
Airstitch (acquired) - an AI chief of staff that lived inside iMessage, SMS, and WhatsApp, so there was no new app to learn. Reached 200+ users and 20 paying customers within nine days. Built at Founders Inc (Artifact'26).
HomePlate - co-founder and CTO. Medical meal delivery for seniors: licensed senior kitchens turned into on-demand, medically-tailored meal prep for people whose chronic illness dictates what they can eat. Ran 10 pilots and generated $4k in early revenue, later covered by Fox 5.
Barty - an AI recruiter that screened candidates and ran interview workflows. Won $8,000 at George Mason's Patriot Pitch but never found a market. It taught me far more about sales than recruiting - the gap between loving a demo and paying for it - which is how I built Airstitch.
Earlier work
NSF wearables research (George Mason) - lead ML engineer. Built the pipeline for spotting early cognitive decline from how people move, using wearable sensor data. 87% accuracy, 500+ participants. Paper going to CHI 2026; talk at NARRTC 2026.
Cerebras - engineering fellow. Built AI agents on their inference chips.
Microsoft - student researcher. Built ML pipelines over satellite radar data for environmental monitoring.
Trigent - software engineer (intern). Built a computer-vision system for FDA-regulated medical imaging and a HIPAA-compliant pipeline for 200K+ patient records.
Zepto - I did delivery runs in India myself to learn last-mile logistics first-hand instead of from a dashboard. Found 3 friction points each costing 15+ minutes a delivery.
A NYC startup - fixed a production bug that had stalled their revenue. They recovered.
Open source beyond AgentBudget: contributions to LangChain, Supabase, LangFuse, and Scribe, plus a hackathon-winning swimmer-tracking model that used only motion sensors - no GPS, no cameras (Devpost).
Recognition
Won HackMIT, HackPrinceton, and PennApps (2023 & 2024) out of 30+ hackathons. Patriot Pitch 1st place ($8K). Mason Distinction Award ($84K scholarship). Part of Founders Inc Artifact'26 and NVIDIA Inception.
I've judged hackathons at NASA TechRise, Technica, UVA HooHacks, and UMD Bitcamp, and I ran George Mason's Data Science & Computation Society - grew it from under 30 members to 500+.
CS @ George Mason University · GitHub · LinkedIn · X · Email · AgentBudget
Side experiments
Various side experiments, including an ill-fated attempt at a clothing brand. Sometimes you just have to see what happens.