David Mastalerz

David Mastalerz serves as CEO at Elosi. Elosi operates in the information technology & services sector with approximately 98.0 employees. The company is headquartered in Lille, Hauts-de-France. Elosi generates annual revenue of 336000.0.

Industry & Role Insights

• • MessageCEO tracks 50,503 executives in the information technology & services sector.
• • We have verified contacts for 2 executives at Elosi.
• • 81 executive contacts are available in Hauts-de-France.
• • Our database includes 201,468 c suite-level executives.

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Bertrand Mastalerz CEO / Directeur général - fondateur d'ELOSI at Elosi

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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 Mastalerz, lead with your value proposition relative to the stack they currently use. Generic pitches perform poorly; specific technical relevance is key.

David Mastalerz's Position in the MessageCEO Database

• •David Mastalerz is 1 of 2 verified executive contacts we track at Elosi.
• •49,754 verified executive contacts in information technology & services are in the MessageCEO database.
• •81 verified executive contacts in Hauts-de-France are in the database.
• •148 verified contacts work at information technology & services companies in the 98.0 employee range (same size as Elosi).

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 We do not publish personal addresses or sensitive identifiers.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

How do I reach David Mastalerz directly?

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

What company does David Mastalerz work for?

David Mastalerz is CEO at Elosi, a company in the information technology & services sector with 98.0 employees. The company is based in Lille, Hauts-de-France.

Can I pitch or sell to David Mastalerz?

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

What industry is David Mastalerz in?

David Mastalerz works in the information technology & services industry as CEO at Elosi. MessageCEO provides verified contact information for executives across all major industries.

Is David Mastalerz's contact information verified?

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

Last updated: July 25, 2026