ABOUT GC SOLUTIONS LLC
GC Solutions is an Omaha-based, nationwide advisory focused on the evidence, boundaries and decision paths behind HSM, key management, payment security and crypto-agility.
COMPANY PROFILE
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OUR ROLE
GC Solutions helps leaders frame a defined cryptographic question, examine available evidence and identify what must be known before action. The work is independent and vendor-neutral: a product claim, an existing control or a project assumption is treated as an input to review rather than a conclusion to repeat.
Engagements are advisory and scoped to agreed boundaries. They do not issue certifications, attestations or cryptographic-module approvals.
CONTEXT THAT INFORMS THE WORK
NATIONAL COMMAND
Source-grounded experience in national-command communications and mission systems informs how GC Solutions approaches resilience, ownership, change and documentation.
FINTECH
The company’s perspective is informed by financial-technology work spanning HSMs, key lifecycles, PKI, payment-security controls and operational documentation.
CRITICAL INFRASTRUCTURE
Experience across infrastructure and data-center programs reinforces an advisory approach that connects security decisions to accountable owners, dependencies and delivery realities.
FOUNDER & PRINCIPAL ADVISOR
Marquez “Q” Greenhill is the Founder & Principal Advisor of GC Solutions LLC and a U.S. Air Force veteran with 17+ years of experience across mission-critical military communications, defense systems, enterprise cryptography, financial technology and infrastructure leadership. He brings independent judgment and systems thinking to environments where a weak assumption can have significant security or operational consequences.
His experience includes national-command communications infrastructure, cryptographic engineering in large-scale financial technology operations, HSM administration, key lifecycle management, PKI, payment security and technical governance. His hands-on background spans Futurex, Thales, Utimaco/Atalla and IBM cryptographic platforms, alongside NIST and PCI security frameworks. He translates technical evidence into clear findings, defensible business decisions and prioritized change plans. He also founded the CryptoAgility Sentinel initiative, an evidence-led evaluation MVP—not a certification service or live HSM operator.
GC Solutions is the company through which this advisory work is offered. Its recommendations are framed for the client’s stated decision and evidence boundary; they do not represent an employer, agency, customer or technology provider.
Request a confidential consultationPLATFORM CONTEXT
The founder’s professional background has included work with cryptographic platforms from Futurex, Thales, Utimaco/Atalla and IBM. Those references provide relevant context for advisory conversations about HSMs, keys and operating evidence.
They do not imply a current authorization, integration, endorsement, partnership or product validation by any named provider. Specific versions, access and engagement boundaries are confirmed separately.
SCOPED MILESTONE
BEGINNING OCTOBER 2026
GC Solutions was awarded a Sparq consulting contract beginning October 2026 to advise on tokenization implementation and an agentic AI approach.
This is a scoped engagement beginning October 2026. It is not presented as an endorsement, completed outcome or client testimonial.
YOUR NEXT STEP
Start with a high-level business conversation. Evidence handling, scope and operating boundaries come next.
