Insights

Scale and Reach With 21 offices across multiple states and a broad client base from Fortune 500 to SMBs, Callos Resource presents a sales opportunity to offer expanded staffing and managed services, cross-selling temporary, direct hire, payroll, and specialized medical staffing to new regional markets.

Diverse Industry Coverage Callos serves Manufacturing, Engineering, Retail, Medical and Warehouse sectors, signaling potential for tailored workforce solutions, MSP partnerships, and industry-specific recruitment process outsourcing (RPO) offerings to deepen client engagements.

Stable Growth Footprint A long-standing player since 1965 with steady expansionillogical momentum and revenue in the seven-figure to mid-seven-figure range indicates reliability and potential for upsell of higher-value services such as payroll administration and compliance support.

Asset and Acquisition Interest Recent asset investment such as the Mac's Diner property suggests appetite for strategic acquisitions or real estate-backed partnerships; explore opportunities for facility-based staffing contracts, on-site workforce solutions, or regional hub expansions.

Tech Stack Enablement Current technology usage (WordPress, analytics, maps, and tracking tools) provides a foundation for digital marketing and data-driven lead generation; propose enhanced recruitment technology integrations, onboarding automation, and analytics-driven workforce optimization to attract larger enterprise accounts.

Similar companies to Callos Resource

Callos Resource Tech Stack

Callos Resource uses 8 technology products and services including WordPress, Google Fonts API, Twemoji, and more. Explore Callos Resource's tech stack below.

  • Content Management System
  • Google Fonts API
    Font Scripts
  • Twemoji
    Font Scripts
  • jQuery
    Javascript Libraries
  • Google Maps
    Maps
  • PHP
    Programming Languages
  • Google Tag Manager
    Tag Management
  • Google Analytics
    Web Analytics

Callos Resource's Email Address Formats

Callos Resource uses at least 3 email formats:
Callos Resource Email FormatsExamplePercentage
FLast@callos.comJDoe@callos.com
63%
First@callos.comJohn@callos.com
23%
Last@callos.comDoe@callos.com
14%

Frequently Asked Questions

What is Callos Resource's phone number?

Minus sign iconPlus sign icon
You can contact Callos Resource'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 Callos Resource's official website and social media links?

Minus sign iconPlus sign icon
Callos Resource's official website is callos.com and has social profiles on LinkedIn.

How much revenue does Callos Resource generate?

Minus sign iconPlus sign icon
As of October 2026, Callos Resource's annual revenue is estimated to be $100M - $250M.

What is Callos Resource's SIC code and NAICS code?

Minus sign iconPlus sign icon
Callos Resource's SIC code is 7363 - Help Supply Services and NAICS code is 5613 - Employment Services.

How many employees does Callos Resource have currently?

Minus sign iconPlus sign icon
As of October 2026, Callos Resource has approximately 163 employees across 1 continents, including North America. Key team members include Physician, President: A. N., Manager Of Risk And Administration: N. M. and Branch Manager: V. P. Explore Callos Resource's employee directory with LeadIQ.

What industry does Callos Resource belong to?

Minus sign iconPlus sign icon
Callos Resource operates in the Staffing and Recruiting industry.

What technology does Callos Resource use?

Minus sign iconPlus sign icon
Callos Resource's tech stack includes WordPress, Google Fonts API, Twemoji, jQuery, Google Maps, PHP, Google Tag Manager and Google Analytics.

What is Callos Resource's email format?

Minus sign iconPlus sign icon
Callos Resource's email format typically follows the pattern of FLast@callos.com. Find more Callos Resource email formats with LeadIQ.

When was Callos Resource founded?

Minus sign iconPlus sign icon
Callos Resource was founded in 1965.
Callos Resource logo

Callos Resource

Staffing and RecruitingOhio, United States51-200 Employees

Callos Resource is a mid-sized staffing and recruiting firm based in Youngstown, Ohio, founded in 1965 by John Callos. The company has expanded from a single office to a network of 21 offices across Ohio, Pennsylvania, Kansas, Kentucky, and Maryland, offering services that include temporary staffing, direct hire, payroll services, and medical/nursing staffing.

Its client base ranges from Fortune 500 companies to small and medium-sized firms in manufacturing, engineering, retail, medical, and warehousing sectors. The firm emphasizes a team of experienced HR professionals who value honesty, integrity, and creativity to deliver consistent service to both clients and candidates. In April 2022, Callos Resource purchased the Mac's Diner property from Christopher McMahon, reflecting a tangible growth milestone.

Section iconCompany Overview

Phone number
Website
callos.com
SIC Code
7363 - Help Supply Services
NAICS Code
5613 - Employment Services
Founded
1965
Employees
51-200

Section iconFunding & Financials

  • $100M - $250M

    Callos Resource's revenue is estimated to be in the range of $100M - $250M

Ready to create more pipeline?

Get a demo and discover why thousands of SDR and Sales teams trust
LeadIQ to help them build pipeline confidently.

© LeadIQ, Inc. All rights reserved.