Find your path to John
103 people in our graph share verified history with John — schools, employers, funds. One of them is your warm intro.
Dave MunichiellounlockedJohn: together at ThousandEyes (2016–2020)
×6John: together at Cisco
John: together at ThousandEyes
×4John: together at Riverbed Technology
About
John Clark is Vice President of Field Engineering at Opal Security. He has more than 30 years of experience spanning security, performance management, cloud infrastructure, networking, and protocol design, with a focus on technical sales leadership and customer engineering. His areas of expertise include cloud and network architecture, network and application performance monitoring, network security, and pre-sales engineering.
VP of Field Engineering at Opal Security
Intro paths
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In turn, John can intro founders to Opal Security's investors below.
Opal Security's investors · 5
Co-founders at Opal Security
SC
Stephen CobbeCo-Founder & former CEO
UK
Umaimah KhanCo-Founder & former CEO / Head of Product
Experience
- Opal SecurityVice President of Field Engineeringcurrent2026 — presentSan Francisco Bay Area
- CiscoDirector, Solutions Engineering (AI Security)2025 — 2026San Francisco Bay Area
- CiscoDirector, Solutions Engineering (Cloud Protection)2023 — 2025San Francisco Bay Area
- Valtix (now part of Cisco)Vice President of Field Engineering2022 — 2023San Francisco Bay Area
- Valtix (now part of Cisco)Head of Solutions and Enablement2021 — 2022San Francisco Bay Area
- ThousandEyes (part of Cisco)Vice President, Global Solutions Engineering2018 — 2021San Francisco Bay Area
- ThousandEyes (part of Cisco)Director, Solutions Engineering2015 — 2018San Francisco Bay Area
- ThousandEyes (part of Cisco)Senior Solutions Engineer2015San Francisco, CA
- Riverbed TechnologySr. Director, Systems Engineering2013 — 2015San Francisco Bay Area
- OPNET Technologies, Inc.Vice President, Applications Engineering2010 — 2012San Francisco Bay Area
- OPNET Technologies, Inc.Associate Vice President, Applications Engineering2003 — 2010San Francisco Bay Area
- OPNET Technologies, Inc.West Coast Technical Director2000 — 2003San Francisco Bay Area
- OPNET Technologies, Inc.Senior Applications Engineer1998 — 1999San Francisco Bay Area
- OPNET Technologies, Inc.Applications Engineer1997Washington DC-Baltimore Area
- ROAR Multimedia ProductionsAudio Production Engineer1995 — 1997Washington DC-Baltimore Area
Skills & more
Pre-sales41Solution Selling26Sales Engineering54Systems Engineering26TCP/IP14Professional Services11Data Center20Network Architecture19Sales25Virtualization37Cloud Computing52Enterprise Architecture11
+12 more
Application Performance ManagementNetwork SecuritySoftware EngineeringProduct ManagementNetwork DesignGo-to-market StrategySales EnablementNetwork EngineeringSaaSEnterprise SoftwareUnixLinuxFrom John's professional profile.
Frequently asked questions
- Who is John Clark?
- John Clark is Vice President of Field Engineering at Opal Security. He has more than 30 years of experience spanning security, performance management, cloud infrastructure, networking, and protocol design, with a focus on technical sales leadership and customer engineering. His areas of expertise include cloud and network architecture, network and application performance monitoring, network security, and pre-sales engineering.
- Where does John Clark work?
- John Clark is VP of Field Engineering at Opal Security.
- Where did John Clark go to school?
- John Clark studied at Johns Hopkins University, Whiting School of Engineering (MS, Electrical Engineering); Johns Hopkins University, Whiting School of Engineering (BS, Electrical Engineering); Johns Hopkins University, Peabody Conservatory of Music (BM, Recording Arts and Sciences).
Shared employers
Also worked at Opal Security10
Saam MotamediInvestor at Greylock PartnersAndrew PetersonFounder, Signal Sciences at Decibel PartnersDharmesh ThakkerGeneral Partner at Battery VenturesCorinne RileyPartner at Greylock PartnersAndrew SyFounder at PolymorphSameer MehtaChief Product Officer at Opal Security
+ 4 more
Also worked at Cisco712
Peter FentonGeneral Partner at BenchmarkCyan BanisterCo-founder & General Partner at Long Journey VenturesAdamAdvisor at Clear VenturesHowardAdvisor at Clear VenturesWendy XiaoPartner at NorthzoneClay RobbinsForward Deployed Partner at Slow Ventures
+ 706 more
