![Mark Callahan](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Mark Callahan was the founder of Purple Passport LLC, which was founded in 2004, where he held the title of Managing Director.
He also held the position of Chief Executive Officer at Innovise Ltd., Managing Director at MITIE Group Plc, and Director at Skillsmarket Ltd.
| Companies | Position | End |
|---|---|---|
Skillsmarket Ltd.
 Skillsmarket Ltd. Personnel ServicesCommercial Services Provides recruitment services | Director/Board Member | 29/08/2011 |
| MITIE GROUP PLC | President | - |
Innovise Ltd.
 Innovise Ltd. Packaged SoftwareTechnology Services Develops financial, operations and workforce management software applications for businesses in the guarding, cleaning and facilities management industries | President | - |
Purple Passport LLC | Founder | - |
Active
Inactive
Listed companies
Private companies
| Private companies | 4 |
|---|---|
MITIE Group Plc
 MITIE Group Plc Miscellaneous Commercial ServicesCommercial Services Operates as a holding company with interest in provision of cleaning & security and technical services | Commercial Services |
Innovise Ltd.
Innovise Ltd. Packaged SoftwareTechnology Services Develops financial, operations and workforce management software applications for businesses in the guarding, cleaning and facilities management industries | Technology Services |
Skillsmarket Ltd.
Skillsmarket Ltd. Personnel ServicesCommercial Services Provides recruitment services | Commercial Services |
Purple Passport LLC |
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