# Vivek Vaddina – Cal.com booking page

> Vivek Vaddina is an experienced freelance data scientist with over seven years of expertise, holding a Master's degree in Computer Science from RWTH Aachen University. He has a proven track record of successful projects in the climate tech industry, fintech, and mobility, leveraging his expertise in Python, NLP, SQL, data analysis, and machine & deep learning to tackle complex challenges and make a positive impact.

Booking page: https://cal.com/vivekvaddina

## Event types

- [1 Hour Meeting](https://cal.com/vivekvaddina/60min): 50 min, requires the host’s confirmation, event type id 761513. Details: https://cal.com/vivekvaddina/60min.md
- [15 Min Meeting](https://cal.com/vivekvaddina/15min): 15 min, requires the host’s confirmation, event type id 761508. Details: https://cal.com/vivekvaddina/15min.md
- [30 Min Meeting](https://cal.com/vivekvaddina/30min): 25 min, requires the host’s confirmation, event type id 761512. Details: https://cal.com/vivekvaddina/30min.md

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=<event type id>&start=YYYY-MM-DD&end=YYYY-MM-DD&timeZone=<IANA time zone>
cal-api-version: 2024-09-04
```

The response is `{"data":{"YYYY-MM-DD":[{"start":"<ISO 8601 with offset>"}]}}`; 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