Microsoft-native systems, data, cloud, cybersecurity, and applied AI delivery

Senior-led Microsoft delivery for public-sector, regulated enterprise, and prime-contractor teams.

Cornerstone Systems Group is a California LLC, primary NAICS 541512. We support federal civilian, California SLED, enterprise, and prime-contractor buyers with Microsoft-native delivery, documentation-first execution, and founder past performance referenceable under NDA. SAM registration is in progress.

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California LLC NAICS 541512 · Primary Microsoft-Native Delivery SAM Registration in Progress References Under NDA

Secondary NAICS 541511 · 541519 · 541611 · 541618 · 541614 · 611420 · 518210

Who We Serve

Three Buyer Paths

Federal Civilian Agencies

Compliance-aware Microsoft delivery

Microsoft-native systems, data, cloud, cybersecurity, and applied AI support for federal civilian environments. North American Industry Classification System (NAICS) 541512 primary. SAM registration in progress. Past performance referenceable under NDA.

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California State, Local & Education

Procurement-aware public-sector delivery

Cloud, cybersecurity, data, and applied AI delivery for California public-sector buyers. California LLC. Security-first delivery posture. Built for procurement-aware documentation and public-sector accountability.

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Enterprise & Prime Contractors

Subcontractor-ready delivery

Subcontractor-ready Microsoft delivery for primes and regulated enterprise modernization. Senior workstream leadership, structured documentation, and teaming discussions available under MNDA.

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What We Do

Core Capabilities

IT Professional Services

Delivering skilled technical personnel and managed services to support mission-critical programs.

Cybersecurity & Compliance

Cybersecurity Maturity Model Certification (CMMC)-aligned security programs, risk assessments, and compliance support for government contractors.

Cloud & Infrastructure

Modern cloud architecture, migration planning, and infrastructure management for secure environments.

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Why Cornerstone Systems Group

Built for the Mission

CSG is built for buyers that want senior delivery accountability without inflated claims. We combine technical depth with documentation-first execution disciplined for regulated and procurement-aware programs.

Senior-led workstream delivery from requirements through hypercare
Microsoft-native by default, buyer-environment aligned
Documentation-first execution for regulated programs
Founder past performance available under NDA
Current acquisition status disclosed plainly

CSG operates within the buyer's certified or authorized environment. CSG does not currently hold independent third-party certification under CMMC, FedRAMP, ISO 27001, or equivalent frameworks.

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Delivery Proof

Past Performance Frame: Federal 8-element narrative on every engagement
Reference Architecture: Microsoft-native — Azure · M365 · Copilot Studio
Engagement Posture: Senior workstream lead, requirements through hypercare
Applied AI Posture: Source-cited outputs on Copilot Studio + Azure AI Foundry; buyer-tenant deployment
References: Available under NDA to qualified prospects

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