David Heidelberg

David Heidelberg serves as CEO at DIRS21 by TourOnline AG. DIRS21 by TourOnline AG operates in the information technology & services sector with approximately 73.0 employees. The company is headquartered in Baden-Wuerttemberg. DIRS21 by TourOnline AG generates annual revenue of 5800000.0.

Industry & Role Insights

• • MessageCEO tracks 50,503 executives in the information technology & services sector.
• • We have verified contacts for 2 executives at DIRS21 by TourOnline AG.
• • 812 executive contacts are available in Baden-Wuerttemberg.
• • Our database includes 201,465 c suite-level executives.

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Julian Heidelberg CTO at DIRS21 by TourOnline AG

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Marvin Jo CTO at 위블링

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Robert Kim CEO, North America at 당근마켓

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Kyung Lim CTO at 인터파크

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Alex Ryu Chief Operating Officer, Supply Chain Solutions Group at 동양시스템즈(주)

Outreach Guidance — information technology & services Sector

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

David Heidelberg's Position in the MessageCEO Database

• •David Heidelberg is 1 of 2 verified executive contacts we track at DIRS21 by TourOnline AG.
• •49,754 verified executive contacts in information technology & services are in the MessageCEO database.
• •806 verified executive contacts in Baden-Wuerttemberg are in the database.
• •239 verified contacts work at information technology & services companies in the 73.0 employee range (same size as DIRS21 by TourOnline AG).

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 We do not publish personal addresses or sensitive identifiers.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 October 2026.

How do I reach David Heidelberg directly?

David Heidelberg's verified email address is available to MessageCEO Pro subscribers. They currently serve as CEO at DIRS21 by TourOnline AG. Access direct contact info to skip gatekeepers and reach the decision maker.

What company does David Heidelberg work for?

David Heidelberg is CEO at DIRS21 by TourOnline AG, a company in the information technology & services sector with 73.0 employees. The company is based in Baden-Wuerttemberg.

Can I pitch or sell to David Heidelberg?

As CEO at DIRS21 by TourOnline AG, David Heidelberg is a key decision-maker in the information technology & services sector. MessageCEO Pro gives you verified email to reach David Heidelberg directly — ideal for B2B sales, partnerships, and executive recruiting.

What industry is David Heidelberg in?

David Heidelberg works in the information technology & services industry as CEO at DIRS21 by TourOnline AG. MessageCEO provides verified contact information for executives across all major industries.

Is David Heidelberg's contact information verified?

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

Last updated: October 28, 2026