# István Antal – Cal.com booking page

> Senior software engineer with 20 years in production systems — finance, e-commerce, and media. I run Avant Media, a London studio doing AI integration, platform builds, and engineering leadership. Book a time and tell me what you're working on.

Booking page: https://cal.eu/istvan

## Event types

- [Engineering review](https://cal.eu/istvan/engineering-review): 30 min, confirmed instantly, event type id 340013. A free 30 minutes for founders and small teams who want a senior engineer's read on what they're building — architecture, a tricky build, a cloud migration, code review, hiring or deploy practice. The second opinion you'd want from the senior person in the room when there's no one else to push back. Twenty years shipping production software, no slides, no pitch — a straight assessment of where you are and what I'd do next. Details: https://cal.eu/istvan/engineering-review.md
- [AI-readiness review](https://cal.eu/istvan/ai-readiness-review): 30 min, confirmed instantly, event type id 331746. A free 30 minutes for teams running real production systems and weighing up AI. Bring a specific problem or codebase and you'll get a straight assessment: where AI genuinely helps, where it doesn't, and what it'd take to ship. No slides, no sales pitch — just an engineer's read. Details: https://cal.eu/istvan/ai-readiness-review.md

## Check availability

```http
GET https://api.cal.eu/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.eu/v2/bookings` request (`cal-api-version: 2026-02-25`).

## More

- API docs: https://cal.eu/docs/api-reference/v2/introduction