Marcos Siqueira

Marcos Siqueira serves as CEO at Checktudo. Checktudo operates in the information technology & services sector with approximately 28.0 employees. The company is headquartered in Sao Paulo, State of Sao Paulo.

Industry & Role Insights

• • MessageCEO tracks 50,503 executives in the information technology & services sector.
• • 3,750 executive contacts are available in State of Sao Paulo.
• • Our database includes 201,468 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 Marcos Siqueira, lead with your value proposition relative to the stack they currently use. Generic pitches perform poorly; specific technical relevance is key.

Marcos Siqueira's Position in the MessageCEO Database

• •Marcos Siqueira is 1 of 1 verified executive contact we track at Checktudo.
• •49,754 verified executive contacts in information technology & services are in the MessageCEO database.
• •3,723 verified executive contacts in State of Sao Paulo are in the database.
• •837 verified contacts work at information technology & services companies in the 28.0 employee range (same size as Checktudo).

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 We do not publish personal addresses or sensitive identifiers.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 Marcos Siqueira directly?

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

What company does Marcos Siqueira work for?

Marcos Siqueira is CEO at Checktudo, a company in the information technology & services sector with 28.0 employees. The company is based in Sao Paulo, State of Sao Paulo.

Can I pitch or sell to Marcos Siqueira?

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

What industry is Marcos Siqueira in?

Marcos Siqueira works in the information technology & services industry as CEO at Checktudo. MessageCEO provides verified contact information for executives across all major industries.

Is Marcos Siqueira's contact information verified?

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

Last updated: July 28, 2026