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John Vrionis


"At every crossroads on the path that leads to the future, tradition has placed 10,000 men to guard the past" (Maurice Maeterlinck). Entrepreneurs are the select few that have the Vision and Courage to build enduring companies and lead us all forward.


John joined Lightspeed in 2006 and invests in enterprise and consumer IT companies. In addition, John is the founder of Lightspeed’s Summer Fellowship Program.

John is privileged to be a continuing supporter of the management teams at Affirmed Networks, AppDynamics, Applatix, Arctic Wolf Networks, Athos, Barefoot Networks, CloudBees, DataStax, Datrium, Delphix, Mulesoft and SnapRoute. His past investments include Nimble Storage (NMBL), Nicira (acquired by VMware), IO Turbine (acquired by Fusion-io) and Pliant Technology (acquired by Sandisk).

Previously, John worked in product management with Determina (acquired by VMware) and was also an initial member of the executive team at Freedom Financial Network, where he led product management and sales.

John holds an MBA from Stanford University Graduate School of Business, an MS in Computer Science from the University of Chicago and a BA from Harvard University.

Recent blog posts:

The #1 Mistake Most Technical Founders Make

Behind My Resume. Lessons That Matter Most for Entrepreneurs

It’s Actually Open Source Software That’s Eating The World

One Product Strategy Secret Breakout Startups Know

10 Thoughts for Aspiring Entrepreneurs

All The Great Entrepreneurs Make This Change

Who is the Product Person?

Something most people don’t know about me:

I am a diehard Cleveland Browns fan.

John Vrionis
Email:   john@lsvp dot com

Current Investments:

Affirmed Networks
Arctic Wolf
Barefoot Networks

Public, MULE


Prior Investments:


Acquired, Cisco

IO Turbine

Acquired, FIO

Nicira Networks

Acquired, VMW

Nimble Storage

Public, NMBL

Pliant Technology

Acquired, Sandisk

Socket Plane

Acquired, Docker