# Himanshu – Cal.com booking page > Developer and researcher. More at himanshuat.com What I've built: \- AuraX — co-founded it and ran the research as CTO. Diffusion models for virtual try-on; beat Imagen 4 on our benchmarks, signed Aditya Birla Fashion Group and Mensa Brands. Wound it down when bigger players moved in. \- OpenEdu / SynthAiLabs — taught programming with AI, free, to students. 11,000 registered. No funding, so I stepped away; juniors restarted it without me. \- Tejas AI (YC W25) — owned the agent core and built the search layer. Left Aug 2026. Right now: \- finishing a paper on kernel fault policy in out-of-core scans \- building side projects (a Rust inference router, open-source tooling) \- learning quant finance \- looking for remote engineering work Based in India (IST) — happy to take calls early or late. Booking page: https://cal.com/himanshuat ## Event types - [RedAssay](https://cal.com/himanshuat/redassay): 30 min, confirmed instantly, event type id 7042382. I'll demo RedAssay against a live target: it drives a real browser through the app like a user, captures every backend call it provokes, and replays each candidate before reporting it. You'll see a finding go through the proof gate, and one get held back because the replay couldn't reproduce it. Then I'll walk any number on the public benchmark sheet, including the coverage we don't have yet. Bring a target and your rules of engagement if you want to scope a pilot. Details: https://cal.com/himanshuat/redassay.md - [Technical deep dive](https://cal.com/himanshuat/deep-dive): 30 min, confirmed instantly, event type id 565119. Walk through a problem you're facing, or something I've built. Bring code, a repro, or a design doc if you have one — I'd rather look at the real thing than talk in the abstract. Details: https://cal.com/himanshuat/deep-dive.md - [Intro call](https://cal.com/himanshuat/intro): 15 min, confirmed instantly, event type id 3978534. Quick call to work out whether there's a fit. Tell me roughly what you're working on when you book and I'll come prepared. Details: https://cal.com/himanshuat/intro.md ## Check availability ```http GET https://api.cal.com/v2/slots?eventTypeId=&start=YYYY-MM-DD&end=YYYY-MM-DD&timeZone= cal-api-version: 2024-09-04 ``` The response is `{"data":{"YYYY-MM-DD":[{"start":""}]}}`; no API key is needed. ## Book Each event type's `.md` document lists its required booking fields and the `POST https://api.cal.com/v2/bookings` request (`cal-api-version: 2026-02-25`). ## More - API docs: https://cal.com/docs/api-reference/v2/introduction