Insights

DoD Compliance Lead Leverage SSE's perfect CMMC Level 2 score and ISO 9001:2015 processes to help DoD primes and impacted contractors achieve and maintain CMMC and DFARS compliance, including gap assessments, remediation, and training.

Women-Owned Advantage As a Women-Owned Small Business, SSE can access supplier-diversity programs and set-aside opportunities, making it an attractive partner for federal agencies and primes seeking diverse vendors on approved vendor lists.

Nationwide Reach With services offered across all 50 states, SSE can serve national SMBs and federal contractors remotely, enabling scalable cybersecurity, compliance, and training solutions without geographic constraints.

Integrated Security and Training Combine cybersecurity solutions (including SentinelOne) with training and technical data services to offer end-to-end protection, policy development, and incident response readiness for regulated industries.

Quality-Driven Delivery ISO 9001:2015 certification and established processes position SSE for contracts requiring rigorous quality assurance and proven delivery in highly regulated sectors.

SSE Tech Stack

SSE uses 8 technology products and services including Calendly, Adobe Photoshop, Adobe Acrobat Pro, and more. Explore SSE's tech stack below.

  • Calendly
    Appointment Scheduling
  • Adobe Photoshop
    Cad & Graphics
  • Adobe Acrobat Pro
    Editors
  • SentinelOne
    Endpoint Protection
  • Dell
    IT Infrastructure
  • SharpSpring
    Marketing Automation
  • Windows XP
    Operating Systems
  • YouTube
    Video Players

Media & News

SSE's Email Address Formats

SSE uses at least 1 format(s):
SSE Email FormatsExamplePercentage
First.Last@sseinc.comJohn.Doe@sseinc.com
94%
FirstLast@sseinc.comJohnDoe@sseinc.com
4%
Last@sseinc.comDoe@sseinc.com
2%

Frequently Asked Questions

Where is SSE's headquarters located?

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SSE's main headquarters is located at 9666 Olive Boulevard Suite 710 St. Louis, Missouri 63132 United States. The company has employees across 5 continents, including EuropeNorth AmericaAsia.

What is SSE's phone number?

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You can contact SSE's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is SSE's stock symbol?

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SSE is a publicly traded company; the company's stock symbol is ESNT.

What is SSE's official website and social media links?

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SSE's official website is sseinc.com and has social profiles on LinkedIn.

What is SSE's NAICS code?

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SSE's NAICS code is 5415 - Computer Systems Design and Related Services.

How many employees does SSE have currently?

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As of June 2026, SSE has approximately 804 employees across 5 continents, including EuropeNorth AmericaAsia. Key team members include CEO: D. A.Chief Executive Officer: D. G.CEO: S. P.. Explore SSE's employee directory with LeadIQ.

What industry does SSE belong to?

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SSE operates in the IT Services and IT Consulting industry.

What technology does SSE use?

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SSE's tech stack includes CalendlyAdobe PhotoshopAdobe Acrobat ProSentinelOneDellSharpSpringWindows XPYouTube.

What is SSE's email format?

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SSE's email format typically follows the pattern of First.Last@sseinc.com. Find more SSE email formats with LeadIQ.

When was SSE founded?

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SSE was founded in 1966.

SSE

IT Services and IT ConsultingMissouri, United States501-1000 Employees

SSE is an information technology services and consulting firm that provides IT systems support, cybersecurity compliance, and training and data-management services, with a focus on contracts with the Department of Defense. It operates as a Women-Owned Small Business based in St. Louis, Missouri, and serves clients across all 50 states. The organization has ISO 9001:2015 certification and was established in 1966 by Susan S. Elliott, reflecting a long-standing commitment to structured processes and quality management.

The company targets small and mid-sized organizations needing regulated IT capabilities and data security controls, helping them address standards such as NIST 800-171 and, looking ahead, CMMC requirements. As a DoD contractor, SSE maintains its own networks in line with evolving regulatory expectations and extends that disciplined approach to its clients’ systems. In November 2024, SSE completed a Joint Surveillance Assessment with a C3PAO and DIBCAC and achieved a perfect score on its CMMC Level 2 certification, illustrating its demonstrated compliance maturity.

Section iconCompany Overview

Headquarters
9666 Olive Boulevard Suite 710 St. Louis, Missouri 63132 United States
Phone number
Website
sseinc.com
Stock Symbol
ESNT
NAICS Code
5415 - Computer Systems Design and Related Services
Founded
1966
Employees
501-1000

Section iconFunding & Financials

  • $500M$1B

    SSE's revenue is estimated to be in the range of $500M$1B

Section iconFunding & Financials

  • $500M$1B

    SSE's revenue is estimated to be in the range of $500M$1B

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