Insights

SMB Government Focus Diamond SI is an SBA-certified 8(a) SDB and HUBZone small business serving government and commercial clients, indicating strong alignment with federal contracting programs and potential for small business set-aside opportunities and longer-term security system maintenance contracts.

Integrated Security Offerings With capabilities spanning electrical systems, mass notification, surveillance, access control, life safety, fire protection, chemical detection, IT hardware and telecommunication systems, there are cross-sell opportunities to existing clients for upgrading to integrated security and life-safety solutions.

Diverse Market Access Existing credentials with MDOT, WMATA/DDOT, and Baltimore City minority business programs position Diamond SI for regional transportation security projects and public sector bids, as well as corporate campuses seeking MBE-certified suppliers.

Tech-Driven Delivery Emphasis on staying at the cutting edge of technology and leveraging Microsoft 365 suggests capacity to support modern security operations centers, remote monitoring, and scalable IT-enabled security solutions for multi-site deployments.

Financial Growth Potential Current revenue in the 1 to 10 million range and a lean employee base indicate high potential for margin improvement through recurring maintenance contracts, service level agreements for life-safety systems, and structured upsell of integrated hardware-software security packages.

Diamond SI Tech Stack

Diamond SI uses 1 technology products and services including Microsoft 365, and more. Explore Diamond SI's tech stack below.

  • Microsoft 365
    Email

Diamond SI's Email Address Formats

Diamond SI uses at least 1 format(s):
Diamond SI Email FormatsExamplePercentage
FLast@diamondsecurityinc.comJDoe@diamondsecurityinc.com
100%

Frequently Asked Questions

What is Diamond SI's official website and social media links?

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Diamond SI's official website is diamondsecurityinc.com and has social profiles on LinkedIn.

How much revenue does Diamond SI generate?

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As of August 2026, Diamond SI's annual revenue is estimated to be $1M - $10M.

What is Diamond SI's SIC code NAICS code?

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Diamond SI's SIC code is 7381 - Detective, Guard, and Armored Car Services NAICS code is 5612 - Facilities Support Services.

How many employees does Diamond SI have currently?

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As of August 2026, Diamond SI has approximately 9 employees across 1 continents, including North America. Key team members include Principal: N. R.. Explore Diamond SI's employee directory with LeadIQ.

What industry does Diamond SI belong to?

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Diamond SI operates in the Facilities Services industry.

What technology does Diamond SI use?

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Diamond SI's tech stack includes Microsoft 365.

What is Diamond SI's email format?

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Diamond SI's email format typically follows the pattern of FLast@diamondsecurityinc.com. Find more Diamond SI email formats with LeadIQ.
Diamond SI logo

Diamond SI

Facilities ServicesMaryland, United States2-10 Employees

Diamond SI is a facilities services company based in Windsor Mill, Maryland, providing security and system solutions intended to protect lives and property both in the U.S. homeland and overseas. The firm operates as a small business with certifications that include SBA 8(a), Small Disadvantaged Business, and HUBZone status, and serves a mix of government and commercial clients with customized, versatile security services designed to support rapid project delivery without sacrificing quality.

Its offerings span installation and maintenance across electrical, life-safety, and security systems, including surveillance, access control, entry systems, and related protective technologies. The company emphasizes a multifaceted approach to projects, combining professional experience with ongoing adoption of new technologies, and it participates in multiple minority business programs at the state and metropolitan levels to broaden its market access. Located in the Baltimore metropolitan area, Diamond SI positions itself within the security and facilities services industry as a small, certified provider capable of handling complex requirements for a diverse client base.

Section iconCompany Overview

SIC Code
7381 - Detective, Guard, and Armored Car Services
NAICS Code
5612 - Facilities Support Services
Employees
2-10

Section iconFunding & Financials

  • $1M - $10M

    Diamond SI's revenue is estimated to be in the range of $1M - $10M

Section iconFunding & Financials

  • $1M - $10M

    Diamond SI's revenue is estimated to be in the range of $1M - $10M

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