Oleh Sieroochenko

Oleh Sieroochenko serves as CEO at OSSystem Ltd. OSSystem Ltd operates in the information technology & services sector with approximately 30.0 employees. The company is headquartered in Boston, Massachusetts.

Industry & Role Insights

• • MessageCEO tracks 50,503 executives in the information technology & services sector.
• • We have verified contacts for 2 executives at OSSystem Ltd.
• • 3,781 executive contacts are available in Massachusetts.
• • Our database includes 201,469 c suite-level executives.

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Serhii Semko Chief Technology Officer at OSSystem Ltd

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

Oleh Sieroochenko's Position in the MessageCEO Database

• •Oleh Sieroochenko is 1 of 2 verified executive contacts we track at OSSystem Ltd.
• •49,754 verified executive contacts in information technology & services are in the MessageCEO database.
• •3,577 verified executive contacts in Massachusetts are in the database.
• •806 verified contacts work at information technology & services companies in the 30.0 employee range (same size as OSSystem Ltd).

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 We do not publish personal addresses or sensitive identifiers.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 Oleh Sieroochenko directly?

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

What company does Oleh Sieroochenko work for?

Oleh Sieroochenko is CEO at OSSystem Ltd, a company in the information technology & services sector with 30.0 employees. The company is based in Boston, Massachusetts.

Can I pitch or sell to Oleh Sieroochenko?

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

What industry is Oleh Sieroochenko in?

Oleh Sieroochenko works in the information technology & services industry as CEO at OSSystem Ltd. MessageCEO provides verified contact information for executives across all major industries.

Is Oleh Sieroochenko's contact information verified?

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

Last updated: July 20, 2026