Walter Kortschak is an engineer and venture capitalist. He currently invests his own capital through Firestreak and serves as a senior advisor at Summit Partners and a trustee of Caltech.

What Walter can write

Writes checks of$25K to $250K
Comes in atPre-seed, SeedMostly follows a lead
Best routeA short note on LinkedInA warm intro from a founder they backed works better.

Firestreak Ventures writes $25K to $250K checks, larger than 1% of firms in the atlas.

Bars: how many firms report each check band. Highlighted: Firestreak Ventures.

Career

  1. Crosspoint
    1985
  2. Summit
    1989
  3. SignalFire
    2013
  4. Firestreak · Founder
    Now
  5. Summit Partners · Senior Advisor
  6. Caltech · Trustee

Companies founded

Firestreak

Investments named in public bios

StripeSpaceXOpenAIAnthropicPalantirRobinhoodThe Trade DeskMercorCrusoeDatabricksHugging FacePerplexityCohereLovableEtchedGroq

Focus

ML/AI infraopen-sourcecybersecurityvertical AI/SaaS

Partners like Walter

At firms with a similar stage, sector and check size.

Alert me when Firestreak Ventures is active

One email when Walter's firm raises a fund, adds a partner or shows new activity.

Founders and investors at a Mode VC gathering

Send Mode VC your deck

Raising a pre-seed or seed round? We write $1M to $5M first checks and help founders with distribution. A partner reads every deck.

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Questions

Who is Walter Kortschak?

Walter Kortschak is an engineer and venture capitalist. He currently invests his own capital through Firestreak and serves as a senior advisor at Summit Partners and a trustee of Caltech.

How much does Walter Kortschak invest?

Walter Kortschak invests through Firestreak Ventures, which writes checks of $25K to $250K at pre-seed, seed.

How do I pitch Walter Kortschak?

A warm intro from a founder Firestreak Ventures backed works best. A short LinkedIn note with one line on traction is the next best route.

What did Walter Kortschak do before Firestreak Ventures?

Crosspoint; Summit; SignalFire; Senior Advisor at Summit Partners; Trustee at Caltech.

Last updated 2026-10-15. Is this you? Ask for a correction.