John Lefas

John Lefas serves as Chief Technology Officer at Appnox Technologies. Appnox Technologies operates in the information technology & services sector with approximately 50.0 employees.

Industry & Role Insights

• • MessageCEO tracks 50,503 executives in the information technology & services sector.
• • Our database includes 201,464 c suite-level executives.

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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)

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Wonho Kang 라포테이블(팔도감) | CEO · Product Lead at 라포랩스(퀸잇)

Outreach Guidance — information technology & services Sector

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

John Lefas's Position in the MessageCEO Database

• •John Lefas is 1 of 1 verified executive contact we track at Appnox Technologies.
• •49,754 verified executive contacts in information technology & services are in the MessageCEO database.
• •478 verified contacts work at information technology & services companies in the 50.0 employee range (same size as Appnox Technologies).

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 We do not publish personal addresses or sensitive identifiers.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

How do I reach John Lefas directly?

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

What company does John Lefas work for?

John Lefas is Chief Technology Officer at Appnox Technologies, a company in the information technology & services sector with 50.0 employees.

Can I pitch or sell to John Lefas?

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

What industry is John Lefas in?

John Lefas works in the information technology & services industry as Chief Technology Officer at Appnox Technologies. MessageCEO provides verified contact information for executives across all major industries.

Is John Lefas's contact information verified?

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

Last updated: November 5, 2026