Company Details
Technology Stack
Professional Summary
Robert Sefr is Chief Technology Officer at Whalebone. Whalebone operates in the computer & network security industry and has 160 employees. Based in South Moravian Region, Czechia. Classified as a c-suite-level CTO leader. Their organization's technology stack includes Sendgrid, Gmail, Google Apps, MailChimp SPF, CloudFlare Hosting, and 9 other technologies. Whalebone reports annual revenue of 14000000. Whalebone has raised 14000000 in total funding.
Position in the CTO Rank Database
- • Typical CTO compensation in South Moravian Region: $250,000 – $650,000 (median $420,000). Composite from levels.fyi, Glassdoor, and Payscale data; adjusted for state cost of labor.
Data compiled from LinkedIn public profiles, company filings, and verified public technology signals. Methodology & sources · Updated June 2026.
Frequently Asked Questions
How do I contact Robert Sefr?
Robert Sefr has a verified email address on file on CTO Rank. They work at Whalebone. Pro members can access direct email addresses, LinkedIn profiles, and phone numbers.
What company does Robert Sefr work for?
Robert Sefr is Chief Technology Officer at Whalebone, a company in the computer & network security industry with 160 employees. The company is headquartered in Brno, South Moravian Region, Czech Republic.
What is Robert Sefr's role in technology leadership?
Robert Sefr is classified as a CTO leader at the c-suite level.
What technologies does Robert Sefr's organization use?
Robert Sefr's organization uses a technology stack that includes Sendgrid, Gmail, Google Apps, MailChimp SPF, CloudFlare Hosting, Zoho Email. This information is useful for sales teams, recruiters, and technology vendors.
Is Robert Sefr open to recruiting or new opportunities?
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Can I pitch or sell to Robert Sefr at Whalebone?
Robert Sefr is Chief Technology Officer at Whalebone. CTOs like Robert Sefr typically evaluate vendors in Sendgrid, Gmail, Google Apps, and related categories. Use CTO Rank Pro to get verified email and approach directly.
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