Company Details
Technology Stack
Professional Summary
John Parkinson is CTO at TransUnion. TransUnion operates in the information technology & services industry and has 13000 employees. Based in Chicago, Illinois, United States. Classified as a c-suite-level CTO leader. Their organization's technology stack includes CloudFlare CDN, Salesforce, CSC Corporate Domains, Outlook, CloudFlare Hosting, and 7 other technologies. TransUnion reports annual revenue of 4183800000.
Industry & Role Insights
- • CTO Rank tracks 138,833 CTO leaders with verified contact information.
- • There are 166,587 tech leaders in the information technology & services industry in our database.
- • We have verified contacts for 68 tech leaders at TransUnion.
- • 9,018 tech leaders in Illinois are available in our database.
Position in the CTO Rank Database
- • John Parkinson is 1 of 140,489 leaders with the CTO role tracked in the CTO Rank database.
- • 62,499 hold the CTO role at information technology & services companies (out of 167,492 total information technology & services leaders in our database).
- • 1,493 hold the CTO role in Illinois.
- • 199 hold the CTO role at companies with 13000 employees.
- • Typical CTO compensation in Illinois: $250,000 – $650,000 (median $420,000). Composite from levels.fyi, Glassdoor, and Payscale data; adjusted for state cost of labor.
Data compiled from LinkedIn public profiles, company filings, and verified public technology signals. Methodology & sources · Updated June 2026.
Frequently Asked Questions
How do I contact John Parkinson?
John Parkinson has a verified email address on file on CTO Rank. They work at TransUnion. Pro members can access direct email addresses, LinkedIn profiles, and phone numbers.
What company does John Parkinson work for?
John Parkinson is CTO at TransUnion, a company in the information technology & services industry with 13000 employees. The company is headquartered in Chicago, Illinois, United States.
What is John Parkinson's role in technology leadership?
John Parkinson is classified as a CTO leader at the c-suite level.
What technologies does John Parkinson's organization use?
John Parkinson's organization uses a technology stack that includes CloudFlare CDN, Salesforce, CSC Corporate Domains, Outlook, CloudFlare Hosting, DemandBase. This information is useful for sales teams, recruiters, and technology vendors.
Is John Parkinson open to recruiting or new opportunities?
CTO Rank does not track open-to-work status. The best approach is to reach out directly to John Parkinson using the verified contact information available to Pro members. When recruiting a CTO, personalizing your outreach with specifics about the role and tech stack typically yields the best response rate.
Can I pitch or sell to John Parkinson at TransUnion?
John Parkinson is CTO at TransUnion. CTOs like John Parkinson typically evaluate vendors in CloudFlare CDN, Salesforce, CSC Corporate Domains, and related categories. Use CTO Rank Pro to get verified email and approach directly.
How accurate is John Parkinson's profile data?
CTO Rank verifies and refreshes profile data weekly. John Parkinson's profile includes verified contact details, company information, and technology stack data sourced from multiple public and proprietary sources.
Get full access
Unlock verified emails, phone numbers, LinkedIn profiles, and CSV exports for 485,000+ tech leaders.
Upgrade to Pro