John Heinlein

John Heinlein serves as Chief Marketing Officer at Sonatus. Sonatus operates in the information technology & services sector with approximately 220.0 employees. The company is headquartered in San Jose, California. Sonatus generates annual revenue of 7600000.0. To date, Sonatus has raised 110000000.0 in total funding, with the most recent round being Venture (Round not Specified).

Industry & Role Insights

• • MessageCEO tracks 50,503 executives in the information technology & services sector.
• • We have verified contacts for 4 executives at Sonatus.
• • 13,743 executive contacts are available in California.
• • Our database includes 201,469 c suite-level executives.

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David Sangster Chief Operating Officer at Sonatus

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Erman Tatar Senior Software Engineer at Office of CTO, Cloud Ai Products at Sonatus

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Giridhar Dhakshinamoorthy Senior Staff Engineer - CTO Office at Sonatus

Outreach Guidance — information technology & services Sector

Technology executives make decisions on infrastructure, tooling, and partnerships. When reaching out to John Heinlein, lead with your value proposition relative to the stack they currently use. Generic pitches perform poorly; specific technical relevance is key.

John Heinlein's Position in the MessageCEO Database

• •John Heinlein is 1 of 4 verified executive contacts we track at Sonatus.
• •49,754 verified executive contacts in information technology & services are in the MessageCEO database.
• •12,901 verified executive contacts in California are in the database.
• •404 verified contacts work at information technology & services companies in the 220.0 employee range (same size as Sonatus).

Executive contact data compiled from public business filings, LinkedIn public profiles, company press materials, and verified outbound email testing. We do not publish personal addresses or sensitive identifiers. Methodology & sources · Removal requests handled at /remove-info · Updated June 2026.

How do I reach John Heinlein directly?

John Heinlein's verified email address is available to MessageCEO Pro subscribers. They currently serve as Chief Marketing Officer at Sonatus. Access direct contact info to skip gatekeepers and reach the decision maker.

What company does John Heinlein work for?

John Heinlein is Chief Marketing Officer at Sonatus, a company in the information technology & services sector with 220.0 employees. The company is based in San Jose, California.

Can I pitch or sell to John Heinlein?

As Chief Marketing Officer at Sonatus, John Heinlein is a key decision-maker in the information technology & services sector. MessageCEO Pro gives you verified email to reach John Heinlein directly — ideal for B2B sales, partnerships, and executive recruiting.

What industry is John Heinlein in?

John Heinlein works in the information technology & services industry as Chief Marketing Officer at Sonatus. MessageCEO provides verified contact information for executives across all major industries.

Is John Heinlein's contact information verified?

Yes. MessageCEO verifies executive contact information through multiple data sources and regular validation checks. John Heinlein's profile is kept up-to-date with the latest available information.

Last updated: June 27, 2026