Declan Costello

Declan Costello serves as CTO at Information Mosaic. Information Mosaic operates in the information technology & services sector with approximately 28.0 employees. The company is headquartered in Dublin, Dublin. Information Mosaic generates annual revenue of 25000000.0.

Industry & Role Insights

• • MessageCEO tracks 50,503 executives in the information technology & services sector.
• • 79 executive contacts are available in Dublin.
• • Our database includes 201,469 c suite-level executives.

Salesforce Akamai DNS Outlook Microsoft Office 365 Microsoft Azure Hosting SAP

technology solutions posttrade automation corporate actions processing custody trade management securities processing asset servicing wealth & asset management investment banking it services & it consulting capital markets financial services information technology & services

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

Declan Costello's Position in the MessageCEO Database

• •Declan Costello is 1 of 1 verified executive contact we track at Information Mosaic.
• •49,754 verified executive contacts in information technology & services are in the MessageCEO database.
• •78 verified executive contacts in Dublin are in the database.
• •837 verified contacts work at information technology & services companies in the 28.0 employee range (same size as Information Mosaic).

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 We do not publish personal addresses or sensitive identifiers.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 Declan Costello directly?

Declan Costello's verified email address is available to MessageCEO Pro subscribers. They currently serve as CTO at Information Mosaic. Access direct contact info to skip gatekeepers and reach the decision maker.

What company does Declan Costello work for?

Declan Costello is CTO at Information Mosaic, a company in the information technology & services sector with 28.0 employees. The company is based in Dublin, Dublin.

Can I pitch or sell to Declan Costello?

As CTO at Information Mosaic, Declan Costello is a key decision-maker in the information technology & services sector. MessageCEO Pro gives you verified email to reach Declan Costello directly — ideal for B2B sales, partnerships, and executive recruiting.

What industry is Declan Costello in?

Declan Costello works in the information technology & services industry as CTO at Information Mosaic. MessageCEO provides verified contact information for executives across all major industries.

Is Declan Costello's contact information verified?

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

Last updated: June 26, 2026