Main Sequence Technology History

Main Sequence Technology History

Main Sequence Technology, Inc. is one of the world's most successful developers of software for recruiting, sourcing, and applicant tracking. A privately-held company based in Cleveland, Ohio, MST serves thousands of world-wide customers in the staffing and recruitment space.

Main Sequence is owned and operated directly by its founding team, supported by a talented core of long-tenured managers and staff. The company has focused its revenue into the development of its software and employees, and has earned a reputation for outstanding customer service, with numerous awards to show for it.

Main Sequence Awards
Main Sequence Technology


  • First version of ExecutiveBob software created which would eventually become PCRecruiter.

  • Main Sequence Technology incorporated and releases the first version of PCRecruiter.

  • Moved out of the Kubicek laundry room and into our first office space.

  • Resume Inhaler launches allowing batch importing of resumes into the database without reviewing them one by one, saving a ton of time.

  • First web-based version of PCRecruiter released. Company moved one block south to accommodate the growing staff.

  • Job Board updated.

  • Management Recruiters International – Best of Class Award.

  • Bill and Marty came up with the idea of PCR Portal in a hot tub time machine at a San Diego ERE Show.

  • Servicing over 52 countries and numerous languages.

  • Moved from second office space into current location at the K&D Corporate Campus.

  • Aloha! Hawaii office opens.

  • PCRecruiter Portal for Outlook released as a plugin integrating MS Outlook and PCRecruiter.

  • API released allowing developers to build custom applications from their PCRecruiter database.

  • PCR Version 9 released with an updated user interface, architecture, and functionality.

  • GDPR Released. Launched new website.

Affiliates & Partners

  • Arya by Leoforce
  • Automate with Zapier and PCRecruiter
  • Broadbean
  • CarbonWeb
  • Careerbuilder
  • Darcy Brix
  • DaXtra
  • Dice
  • eGrabber
  • Financing Solutions
  • GMS
  • Haley Marketing
  • hireEZ
  • Hoovers
  • Indeed
  • Interseller
  • Intuit Quickbooks
  • JobRobotix
  • Legacy Group Intl
  • LexisNexis
  • LinkMatch
  • McMurry & Hughes
  • Monster
  • Next Level Exchange
  • Office365
  • Ongig
  • Other Job Distribution Sites
  • Paychex
  • PhysicianCareerJobs
  • POP Interactive
  • Recruiters Websites
  • Revenue Performance Management (RPM)
  • RingCentral
  • Seek
  • Spark Hire
  • Textkernel
  • The RecruiterU
  • Verified First
  • WorldConcert
  • XOR
  • Zoominfo