Insights

Sustainability Opportunity FSi Engineers emphasizes sustainability and energy efficiency in design. Sales teams can position services to public and private sector clients pursuing green building certifications, energy code optimization, and resilient MEP systems, expanding opportunities in transit, education, healthcare, and utilities projects.

Growth & Leadership With multiple promotions to principal and senior roles, FSi has a strengthened leadership bench. This suggests capacity for pursuing larger, more complex projects and long-term client engagements, making them a strong partner for multi-site or phased programs in the Northwest to Mid-Atlantic regions.

Regional Expansion The firm serves diverse markets from the Pacific Northwest to the Mid-Atlantic, signaling readiness to grow and accept new public and private sector opportunities across multiple states, including transit, education, healthcare, and utilities projects.

Technical Stack Readiness Utilizing modern design and analytics tools (Site Kit, Google Analytics, GTM, HTTP/3, Cloudflare) indicates strong digital capabilities. This can be leveraged to offer enhanced building performance analytics, BIM-integrated MEP coordination, and data-driven commissioning services to clients.

Force Multipliers Key hires in plumbing and project coordination, plus leadership promotions, point to enhanced delivery capacity and specialized expertise. Use this to target large facility programs, K-12/higher ed expansions, healthcare modernization, and civic projects requiring robust project governance and reliable staffing.

FSi Engineers Tech Stack

FSi Engineers uses 8 technology products and services including Site Kit, jQuery, Microsoft Office, and more. Explore FSi Engineers's tech stack below.

  • Site Kit
    Analytics
  • jQuery
    Javascript Libraries
  • Microsoft Office
    Office Suites
  • WP Engine
    Platform As A Service
  • PHP
    Programming Languages
  • Cloudflare Bot Management
    Security
  • Bootstrap
    UI Frameworks
  • HTTP/3
    Web & Portal Technology

FSi Engineers's Email Address Formats

FSi Engineers uses at least 1 format(s):
FSi Engineers Email FormatsExamplePercentage
FirstL@fsi-engineers.comJohnD@fsi-engineers.com
87%
FLast@fsi-engineers.comJDoe@fsi-engineers.com
5%
First@fsi-engineers.comJohn@fsi-engineers.com
5%
FirstLast@fsi-engineers.comJohnDoe@fsi-engineers.com
3%

Frequently Asked Questions

What is FSi Engineers's phone number?

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You can contact FSi Engineers'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 FSi Engineers's official website and social media links?

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FSi Engineers's official website is fsi-engineers.com and has social profiles on LinkedIn.

How much revenue does FSi Engineers generate?

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As of July 2026, FSi Engineers's annual revenue is estimated to be $25M - $50M.

What is FSi Engineers's SIC code NAICS code?

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FSi Engineers's SIC code is 8711 - Engineering Services NAICS code is 54 - Professional, Scientific, and Technical Services.

How many employees does FSi Engineers have currently?

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As of July 2026, FSi Engineers has approximately 55 employees across 2 continents, including North AmericaEurope. Key team members include Director: D. M.Human Resource Manager: C. Y.General Manager: R. D.. Explore FSi Engineers's employee directory with LeadIQ.

What industry does FSi Engineers belong to?

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FSi Engineers operates in the Professional Services industry.

What technology does FSi Engineers use?

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FSi Engineers's tech stack includes Site KitjQueryMicrosoft OfficeWP EnginePHPCloudflare Bot ManagementBootstrapHTTP/3.

What is FSi Engineers's email format?

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FSi Engineers's email format typically follows the pattern of FirstL@fsi-engineers.com. Find more FSi Engineers email formats with LeadIQ.

When was FSi Engineers founded?

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FSi Engineers was founded in 1985.
FSi Engineers logo

FSi Engineers

Professional ServicesWashington, United States51-200 Employees

FSi Engineers is a professional services firm focused on mechanical, electrical, and plumbing (MEP) engineering and fire protection. Founded in 1985 and based in Seattle, Washington, the company serves clients across the Pacific Northwest to the Mid-Atlantic region, addressing design excellence and sustainability in a range of public and private sectors. Its work encompasses transit, K-12 and higher education, manufacturing, healthcare, utilities, and civic projects, with an emphasis on delivering comprehensive engineering solutions that support reliable infrastructure and efficient building systems. As a values-based organization, FSi emphasizes community involvement and high-quality design as core aspects of its operations.

Section iconCompany Overview

Phone number
SIC Code
8711 - Engineering Services
NAICS Code
54 - Professional, Scientific, and Technical Services
Founded
1985
Employees
51-200

Section iconFunding & Financials

  • $25M - $50M

    FSi Engineers's revenue is estimated to be in the range of $25M - $50M

Section iconFunding & Financials

  • $25M - $50M

    FSi Engineers's revenue is estimated to be in the range of $25M - $50M

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