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John Underhill Email & Phone Number
Chief Executive Officer
at
QRCS Corporation
LinkedIn matched
✓ Verified July 2026
2 data sources
Profile completeness 71%
Who is John Underhill? Overview
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Quick answer
John Underhill is listed as Chief Executive Officer at QRCS Corporation, based in Ottawa, Ontario, Canada. AeroLeads shows a matched LinkedIn profile for John Underhill.
John Underhill previously worked as Chief Technology Officer at Qscs Corp. and Chief Executive Officer at Digital Freedom Defence.
Company email context
Email format at QRCS Corporation
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QRCS Corporation
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Profile bio
About John Underhill
Author of 3 post-quantum cryptographic libraries CEX++, CEX .NET, and QSC. Author of symmetric ciphers, key management schemes, and cryptographic primitives.Expert computer programmer, fluent in over a dozen programming languages. Expert network engineer, and secure systems designer.
Current workplace
John Underhill's current company
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3 roles
John Underhill work experience
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Chief Technology Officer
Current
Qscs Corp.
Chief architect of post quantum technologies.
Jan 2022 - Present
Chief Executive Officer
Digital Freedom Defence
Owner and CEOExpert cryptographer and secure systems developer
Jan 2019 - 2020
FAQ
Frequently asked questions about John Underhill
Quick answers generated from the profile data available on this page.
What company does John Underhill work for?
John Underhill works for QRCS Corporation.
What is John Underhill's role at QRCS Corporation?
John Underhill is listed as Chief Executive Officer at QRCS Corporation.
Where is John Underhill based?
John Underhill is based in Ottawa, Ontario, Canada while working with QRCS Corporation.
What companies has John Underhill worked for?
John Underhill has worked for Qrcs Corporation, Qscs Corp., and Digital Freedom Defence.
How can I contact John Underhill?
You can use AeroLeads to view verified contact signals for John Underhill at QRCS Corporation, including work email, phone, and LinkedIn data when available.
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