Company Details
Technology Stack
Professional Summary
John Fellman is Engineering Manager at Square. Square operates in the information technology & services industry and has 1800 employees. Based in Petaluma, California, United States. Classified as a manager-level Engineering Manager leader. Their organization's technology stack includes Route 53, Gmail, Google Apps, Microsoft Office 365, CloudFlare Hosting, and 8 other technologies. Square reports annual revenue of 1012336000.
Industry & Role Insights
- • CTO Rank tracks 128,091 Engineering Manager 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 111 tech leaders at Square.
- • 48,652 tech leaders in California are available in our database.
Position in the CTO Rank Database
- • John Fellman is 1 of 128,998 leaders with the Engineering Manager role tracked in the CTO Rank database.
- • 44,309 hold the Engineering Manager role at information technology & services companies (out of 167,492 total information technology & services leaders in our database).
- • 15,894 hold the Engineering Manager role in California.
- • 977 hold the Engineering Manager role at companies with 1800 employees.
- • Typical Engineering Manager compensation in California: $150,000 – $280,000 (median $200,000). 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 May 2026.
Frequently Asked Questions
How do I contact John Fellman?
John Fellman has a verified email address on file on CTO Rank. They work at Square. Pro members can access direct email addresses, LinkedIn profiles, and phone numbers.
What company does John Fellman work for?
John Fellman is Engineering Manager at Square, a company in the information technology & services industry with 1800 employees. The company is headquartered in San Francisco, California, United States.
What is John Fellman's role in technology leadership?
John Fellman is classified as a Engineering Manager leader at the manager level.
What technologies does John Fellman's organization use?
John Fellman's organization uses a technology stack that includes Route 53, Gmail, Google Apps, Microsoft Office 365, CloudFlare Hosting, Ember JS Library. This information is useful for sales teams, recruiters, and technology vendors.
Is John Fellman 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 Fellman using the verified contact information available to Pro members. When recruiting a Engineering Manager, personalizing your outreach with specifics about the role and tech stack typically yields the best response rate.
Can I pitch or sell to John Fellman at Square?
John Fellman is Engineering Manager at Square. Engineering Managers like John Fellman typically evaluate vendors in Route 53, Gmail, Google Apps, and related categories. Use CTO Rank Pro to get verified email and approach directly.
How accurate is John Fellman's profile data?
CTO Rank verifies and refreshes profile data weekly. John Fellman's profile includes verified contact details, company information, and technology stack data sourced from multiple public and proprietary sources.
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