Insights

Regional Expansion Callos Resource has grown from one office to 21 offices across Ohio, Pennsylvania, Kansas, Kentucky and Maryland, indicating an active footprint expansion strategy and ongoing local market penetration opportunities for staffing services.

Diverse Talent Solutions With offerings spanning Temporary Services, Direct Hire, Payroll, and Medical/Nursing Services, there are cross-sell opportunities to upsell or bundle services to existing clients seeking end-to-end workforce solutions.

Enterprise clientele Serving both Fortune 500 and SMBs across Manufacturing, Engineering, Retail, Medical and Warehouse sectors suggests a broad, adaptable sales approach and potential for targeted campaigns to high-value accounts in multiple industries.

Financial Scale Revenue in the high hundreds of millions range indicates substantial deal sizes and budget availability for strategic workforce initiatives, creating opportunities for long-term partnerships and large contract opportunities.

Acquisition & Assets Recent asset investment such as the Mac's Diner property signals capital and growth initiatives; potential for bundled real estate-related services, facility staffing, or on-site workforce outsourcing opportunities tied to portfolio expansion.

Callos Resource Tech Stack

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

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

Callos Resource's Email Address Formats

Callos Resource uses at least 1 format(s):
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?

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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?

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

What is Callos Resource's SIC code NAICS code?

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Callos Resource's SIC code is 7363 - Help Supply Services NAICS code is 5613 - Employment Services.

How many employees does Callos Resource have currently?

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As of July 2026, Callos Resource has approximately 164 employees across 1 continents, including North America. Key team members include Physician, President: A. N.Manager Of Risk And Administration: N. M.Child Activity Leader: T. W.. Explore Callos Resource's employee directory with LeadIQ.

What industry does Callos Resource belong to?

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Callos Resource operates in the Staffing and Recruiting industry.

What technology does Callos Resource use?

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Callos Resource's tech stack includes WordPressTwemojiGoogle Fonts APIjQueryjQuery MobilePHPGoogle Tag ManagerGoogle Analytics.

What is Callos Resource's email format?

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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?

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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

Section iconFunding & Financials

  • $100M$250M

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

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