# Ciprian Stefan Plesca – Cal.com booking page

> Independent Systems Engineer & Researcher. I design and build autonomous infrastructure — from AI-driven communication systems (WhatsApp automation) to applied cryptography and compliance-governance research (ACDE). Solo-built, open-source where possible, no fabricated uptime.

Booking page: https://cal.com/ciprian-stefan-plesca

## Event types

- [WhatsApp Business Infrastructure Audit](https://cal.com/ciprian-stefan-plesca/whatsapp-ecosystem-audit): 60 min, confirmed instantly, paid, event type id 5146653. A structured review of your WhatsApp Business setup — messaging flows, automation, and API integrations. I identify gaps, inefficiencies, and concrete opportunities to streamline communication and automate revenue-generating touchpoints. Details: https://cal.com/ciprian-stefan-plesca/whatsapp-ecosystem-audit.md
- [System Architecture Deep Dive](https://cal.com/ciprian-stefan-plesca/neural-audit): 60 min, confirmed instantly, paid, event type id 4950215. A detailed working session mapping your current infrastructure, identifying operational bottlenecks, and outlining a realistic architecture path forward. Recommended as a first step before any larger implementation work. Details: https://cal.com/ciprian-stefan-plesca/neural-audit.md
- [Technical Strategy Session](https://cal.com/ciprian-stefan-plesca/sovereign-strategy-call): 60 min, confirmed instantly, paid, event type id 5146615. A focused 60-minute working session on a specific technical bottleneck or architecture decision you're facing. Direct, practical input — no fluff, just engineering reasoning you can act on immediately. Details: https://cal.com/ciprian-stefan-plesca/sovereign-strategy-call.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