MIKE KRIEGER

Born in São Paulo, Brazil in 1986. Moved to the US for college.

Studied symbolic systems at Stanford — a program that combines computer science, linguistics, psychology, and philosophy. Met Kevin Systrom through Stanford connections.

In 2010, Krieger and Systrom built Instagram in about eight weeks. Krieger handled the engineering while Systrom focused on product and design.

The app launched in October 2010 and hit 1 million users in two months. By the time Facebook acquired it in April 2012 for $1 billion, Instagram had 30 million users and 13 employees.

That is roughly $77 million per employee.

Krieger served as Instagram's CTO until 2018, when he and Systrom both resigned over conflicts with Facebook's increasing control over the product. Under their leadership, Instagram grew from 30 million to over 1 billion users.

After leaving Instagram, Krieger invested in startups and served as an advisor before joining Anthropic as CTO — bringing his consumer product expertise to the AI safety company behind Claude.

Co-founded Instagram (2010, sold to Facebook for $1 billion). CTO of Instagram until 2018 (grew to 1 billion+ users).

CTO of Anthropic (AI safety company). Angel investor in numerous startups.

Stanford symbolic systems graduate.

Product-focused builder. Krieger does not invest in public markets or trade stocks — he builds products.

His approach is to find the simplest possible version of a powerful idea and ship it fast. Instagram was built in eight weeks.

He applies the same first-principles thinking to AI at Anthropic.

Instagram. From zero to $1 billion acquisition in 18 months.

From 13 employees to over 1 billion users. Instagram went on to become arguably the most culturally influential social media platform of the 2010s.

Krieger's engineering decisions — the filters, the speed, the simplicity — were the foundation of everything.

Leaving Instagram. Krieger and Systrom resigned in 2018 because Facebook was stripping Instagram's autonomy and pushing features that prioritized Facebook's interests over Instagram's product vision.

While the resignation was principled, it also meant walking away from the product they built during its most dominant years.

Build things people love, and the money will follow. Krieger has never been motivated by financial returns per se.

He wanted to build a beautiful product that connected people. The $1 billion exit was a side effect of building something millions wanted.

Born and raised in São Paulo, Brazil. Moved to the US for Stanford.

Keeps personal life very private. Not much is known publicly about his family or relationships.

Stanford University (BS in Symbolic Systems with a focus on human-computer interaction). The symbolic systems program is Stanford's secret weapon — it combines computer science with psychology, linguistics, and philosophy, producing graduates who think about technology differently.

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