ISTA speaker
Stefani Sankelova
Senior Technical SEO Executive, Merkle Bulgaria
Confirmed for ISTA 2026
The ISTA 2026 programme is not published yet, so no session is listed here for that edition. See what is confirmed.
Biography
Stefani has six years of experience in SEO, with a strong focus on technical SEO. Her expertise includes crawlability, indexation, site architecture, internal linking, page speed, Core Web Vitals, rendering, structured data, and international SEO. Alongside technical delivery, she has contributed across content, on‑page optimisation, and broader organic search strategy. Over the last three years at Merkle, Stefani has worked on major international brands including Tesco Mobile, Jimmy Choo, Gucci, WWF, and SkyShowtime, supporting complex technical initiatives and driving sustainable organic growth.
One edition
Role and company as each edition published them — a title changes between years, and the archive is kept as it was.
- 2026
Senior Technical SEO Executive
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