Insights

California Focus Position QK as a trusted partner for California infrastructure projects, leveraging its four decades of experience and regional presence to win projects requiring local knowledge, regulatory navigation, and coordination across multiple offices.

Diverse Capabilities Highlight QK’s integrated expertise in engineering design, construction management, survey and GIS, urban design, environmental permitting, biology, and planning to offer a one-stop solution for complex civil projects, reducing contractor coordination risk for clients.

People & Training Emphasize a strong workforce development program and hands-on training as a differentiator for delivering high-quality projects on time, while offering potential clients reduced risk through experienced, licensed professionals.

Growth & Locations Leverage the network of offices across Visalia, Bakersfield, Porterville, Clovis, Hanford, and Merced to pursue regional bids, assemble local teams quickly, and provide scalable support for expanding municipal and infrastructure programs.

Similar companies to QK

QK Tech Stack

QK uses 8 technology products and services including WooCommerce, Google Cloud, jQuery, and more. Explore QK's tech stack below.

WooCommerce
E-commerce
Google Cloud
Infrastructure As A Service
jQuery
Javascript Libraries
Cloudflare Bot Management
Security
Bootstrap
UI Frameworks
X-Content-Type-Options
Web & Portal Technology
Apache HTTP Server
Web Servers
WebFactory Under Construction
Web Tools And Plugins

Media & News

QK's Email Address Formats

QK uses at least 2 format(s):

QK Email Formats	Example	Percentage
First.Last@qkinc.com	John.Doe@qkinc.com	75%
F.Last@qkinc.com	J.Doe@qkinc.com	12%
Last@qkinc.com	Doe@qkinc.com	10%
First@qkinc.com	John@qkinc.com	3%
FirstL@quadknopf.com	JohnD@quadknopf.com	93%
Last@quadknopf.com	Doe@quadknopf.com	5%
FLast@quadknopf.com	JDoe@quadknopf.com	1%
First@quadknopf.com	John@quadknopf.com	1%

Frequently Asked Questions

What is QK's phone number?

You can contact QK's main corporate office by phone at

+1-559-449-****

. 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 QK's stock symbol?

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

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

QK's official website is qkinc.com and has social profiles on LinkedIn.

How much revenue does QK generate?

As of July 2026, QK's annual revenue is estimated to be $100M - $250M.

What is QK's NAICS code?

QK's NAICS code is 237 - Heavy and Civil Engineering Construction.

How many employees does QK have currently?

As of July 2026, QK has approximately 256 employees across 5 continents, including North AmericaAsiaEurope. Key team members include Cfo/ Coo: A. A.Controller: J. F.Branch Manager: J. K.. Explore QK's employee directory with LeadIQ.

What industry does QK belong to?

QK operates in the Civil Engineering industry.

What technology does QK use?

QK's tech stack includes WooCommerceGoogle CloudjQueryCloudflare Bot ManagementBootstrapX-Content-Type-OptionsApache HTTP ServerWebFactory Under Construction.

What is QK's email format?

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

When was QK founded?

QK was founded in 1972.

QK

Q: What is QK's official website and social media links?

QK's official website is qkinc.com. QK has social profiles on LinkedIn.

Q: How many employees does QK have currently?

QK has approximately 256 employees.

Q: What technology does QK use?

QK's tech stack includes SiteGround, Nginx, Autoptimize, Gravity Forms, Apple iCloud Mail.

Q: What is QK's NAICS code?

QK's NAICS code is 237 (Heavy and Civil Engineering Construction).

Civil EngineeringCalifornia, United States201-500 Employees

QK is a California-based civil engineering firm delivering multi-disciplinary services for infrastructure projects. Founded in 1972, it supports growth and development across the state. The company organizes its work around five integrated disciplines: engineering design and construction management; survey and GIS; urban design and landscape architecture; biology and environmental permitting; and planning. Headquartered in Visalia, it operates additional offices in Bakersfield, Porterville, Clovis, Hanford, and Merced. Its client base includes public and private sector projects facing California's regulatory, funding, and planning requirements, for whom QK acts as an experienced guide. As a mid-sized California firm, it emphasizes employee development through hands-on training, workshops, tuition reimbursement, and support for professional credentials, reflecting a commitment to quality and long-term capability.