Ceo
Current
2014 - Present
~12 yrs 5 mos
AeroLeads people directory · profile
John Schlaefer Email & Phone Number
CEO at GCT Semiconductor
at
GCT Semiconductor
1 work email found
@gctsemi.com
2 phones found area 408
LinkedIn matched
✓ Verified Jun 2026
4 data sources
Profile completeness 86%
Current company
Role
CEO at GCT Semiconductor
Location
San Jose, California, United States
Who is John Schlaefer? Overview
A concise factual answer block for searchers comparing this professional profile.
Quick answer
John Schlaefer is listed as CEO at GCT Semiconductor at GCT Semiconductor, based in San Jose, California, United States. AeroLeads shows a work email signal at gctsemi.com, phone signal with area code 408, and a matched LinkedIn profile for John Schlaefer.
John Schlaefer previously worked as CEO at Gct Semiconductor and COO at Gct Semiconductor. John Schlaefer holds Mba from University Of California, Berkeley, Haas School Of Business.
Company email context
Email format at GCT Semiconductor
This section adds company-level context without repeating John Schlaefer's masked contact details.
{first_initial}{last}@gctsemi.com
86% confidence
AeroLeads found 1 current-domain work email signal for John Schlaefer. Compare company email patterns before reaching out.
Profile bio
About John Schlaefer
John Schlaefer is a CEO at GCT Semiconductor at GCT Semiconductor.
Current workplace
John Schlaefer's current company
Company context helps verify the profile and gives searchers a useful next step.
5 roles · 39 years
John Schlaefer work experience
A career timeline built from the work history available for this profile.
2006 - 2014
~8 yrs
Product Line Director, Rf Products
2000 - 2006
~6 yrs
Marketing Director, Wireless
1994 - 2000
~6 yrs
Member To The Technical Staff
Watkins Johnson Company
1987 - 1994
~7 yrs
3 education records
John Schlaefer education
Mba
University Of California, Berkeley, Haas School Of Business
Msee
Stanford University
Bsee
Stanford University
FAQ
Frequently asked questions about John Schlaefer
Quick answers generated from the profile data available on this page.
What company does John Schlaefer work for?
John Schlaefer works for GCT Semiconductor.
What is John Schlaefer's role at GCT Semiconductor?
John Schlaefer is listed as CEO at GCT Semiconductor at GCT Semiconductor.
What is John Schlaefer's email address?
AeroLeads has found 1 work email signal at @gctsemi.com for John Schlaefer at GCT Semiconductor.
What is John Schlaefer's phone number?
AeroLeads has found 2 phone signal(s) with area code 408 for John Schlaefer at GCT Semiconductor.
Where is John Schlaefer based?
John Schlaefer is based in San Jose, California, United States while working with GCT Semiconductor.
What companies has John Schlaefer worked for?
John Schlaefer has worked for Gct Semiconductor, National Semiconductor, and Watkins Johnson Company.
How can I contact John Schlaefer?
You can use AeroLeads to view verified contact signals for John Schlaefer at GCT Semiconductor, including work email, phone, and LinkedIn data when available.
What schools did John Schlaefer attend?
John Schlaefer holds Mba from University Of California, Berkeley, Haas School Of Business.
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