Insights

Strong Project Portfolio Stronghold Engineering has a proven track record of high-profile projects including seismic upgrades, infrastructure, renewable energy, and large civil works, indicating a strong presence in complex and large-scale construction markets ideal for targeted project bidding and partnership opportunities.

Award-Winning Reputation The company's multiple awards for performance, safety, and workplace inclusivity demonstrate a reputable brand that can be leveraged for brand strengthening collaborations or high-value contracts with organizations seeking reliable construction partners.

Focused Sustainability Recognition for rooftop solar projects and renewable energy initiatives suggests an openness to sustainable building solutions, opening opportunities to collaborate on green projects and environmental infrastructure developments.

Strategic Certifications Certifications such as WBENC and MBE/WBE position Stronghold as a preferred contractor for government and corporate clients prioritizing diversity and inclusion, which can be advantageous in winning contracts related to public sector or corporate diversity initiatives.

Growing Revenue Base With a revenue between $50 million and $100 million and a history spanning over three decades, Stronghold is positioned as a mid-sized firm with the capacity to scale operations and handle sizable projects, making it an appealing partner for clients requiring reliable, experienced construction services.

Similar companies to Stronghold Engineering

Stronghold Engineering Tech Stack

Stronghold Engineering uses 8 technology products and services including Gravatar, WordPress, Google Fonts API, and more. Explore Stronghold Engineering's tech stack below.

  • Gravatar
    Audio, Video, Graphics
  • WordPress
    Content Management System
  • Google Fonts API
    Font Scripts
  • jQuery Migrate
    Javascript Libraries
  • Jobsite
    Job Board Software
  • Flywheel
    Platform As A Service
  • UIKit
    UI Frameworks
  • GoDaddy
    Web Hosting

Media & News

Stronghold Engineering's Email Address Formats

Stronghold Engineering uses at least 2 format(s):
Stronghold Engineering Email FormatsExamplePercentage
FirstL@teamsei.comJohnD@teamsei.com
66%
Last@teamsei.comDoe@teamsei.com
21%
First@teamsei.comJohn@teamsei.com
4%
LF@teamsei.comDJ@teamsei.com
3%
FLast@teamsei.comJDoe@teamsei.com
2%
FL@teamsei.comJD@teamsei.com
2%
FirstLast@teamsei.comJohnDoe@teamsei.com
2%
FirstL@strongholdengineering.comJohnD@strongholdengineering.com
97%
F.Last@strongholdengineering.comJ.Doe@strongholdengineering.com
3%

Frequently Asked Questions

Where is Stronghold Engineering's headquarters located?

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Stronghold Engineering's main headquarters is located at 150 W Walnut Ave, Perris, California 92571, US. The company has employees across 3 continents, including North AmericaAsiaAfrica.

What is Stronghold Engineering's phone number?

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You can contact Stronghold Engineering'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 Stronghold Engineering's official website and social media links?

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Stronghold Engineering's official website is strongholdengineering.com and has social profiles on LinkedIn.

How much revenue does Stronghold Engineering generate?

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As of October 2025, Stronghold Engineering's annual revenue is estimated to be $50M.

What is Stronghold Engineering's SIC code NAICS code?

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Stronghold Engineering's SIC code is 1611 - Highway and Street Construction, Except Elevated Highways NAICS code is 23 - Construction.

How many employees does Stronghold Engineering have currently?

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As of October 2025, Stronghold Engineering has approximately 110 employees across 3 continents, including North AmericaAsiaAfrica. Key team members include President Principal Engineer: M. A.Owner: E. K.Controller: C. B.. Explore Stronghold Engineering's employee directory with LeadIQ.

What industry does Stronghold Engineering belong to?

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Stronghold Engineering operates in the Construction industry.

What technology does Stronghold Engineering use?

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Stronghold Engineering's tech stack includes GravatarWordPressGoogle Fonts APIjQuery MigrateJobsiteFlywheelUIKitGoDaddy.

What is Stronghold Engineering's email format?

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Stronghold Engineering's email format typically follows the pattern of FirstL@teamsei.com. Find more Stronghold Engineering email formats with LeadIQ.

When was Stronghold Engineering founded?

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Stronghold Engineering was founded in 1991.

Stronghold Engineering

ConstructionUnited States51-200 Employees

Stronghold Engineering (SEI) is an award-winning design and construction firm specializing in renowned projects for some of the nation’s largest organizations.  Throughout our 32-year history, we have designed and constructed high profile ground up facilities, technically challenging repair and renovations for historical and non-historical facilities, and significant seismic upgrades, as well as large civil, infrastructure, and electrical projects exceeding $2.5 billion in construction cost.

SEI was founded in 1991 by owners Beverly and Scott Bailey. With a vision of becoming a reliable and reputable electrical contractor, a dream that started from their kitchen table with a handful of employees and clients, has grown exponentially to encompass General Contracting, Design and Electrical trades.  As a notable contractor in the construction, engineering and design-build industry, they have completed hundreds of projects ranging from renovation and new construction, to renewable energy and electrical contracting for numerous civic, private and governmental agencies over the course of their 32-year history. Their company has been recognized repeatedly with outstanding performance evaluations and national design and construction awards from DBIA, AGC, ENR and ABC, pointing to their commitment to quality, craftsmanship and safety. Stronghold prides themselves on an outstanding safety record and the ability to self-perform significant features of work on projects.  Furthermore, they are a WBENC and MBE/WBE Certified Company.

Section iconCompany Overview

Headquarters
150 W Walnut Ave, Perris, California 92571, US
Phone number
SIC Code
1611 - Highway and Street Construction, Except Elevated Highways
NAICS Code
23 - Construction
Founded
1991
Employees
51-200

Section iconFunding & Financials

  • $50M$100M

    Stronghold Engineering's revenue is estimated to be in the range of $50M$100M

Section iconFunding & Financials

  • $50M$100M

    Stronghold Engineering's revenue is estimated to be in the range of $50M$100M

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