# 30-min Data & Architecture Consultation with Chafiq Madkour

> Have a data engineering or architecture challenge? Let’s work through it in 30 minutes. Bring your problem — whether it’s scalability, performance, architecture, migration, data platforms, or technology choices. We’ll identify the real constraint, assess what’s technically and practically feasible, and determine where to start. No sales pitch. No slides. Just an honest technical discussion and a clear point of view — even if we never work together. Before the call: data volume, current stack, and key deadline are helpful.

- Host: Chafiq Madkour
- Duration: 30 min
- Location: Cal Video
- Host time zone: Europe/Paris
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/chafiq-madkour-13ls5p/30min
- Event type id: 6974019

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=6974019&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

```http
POST https://api.cal.com/v2/bookings
cal-api-version: 2026-02-25
Content-Type: application/json

{
  "eventTypeId": 6974019,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address)
- Optional fields: `notes` (Additional notes), `guests` (Add guests)
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.