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Steven Mankoff

Steven Mankoff

Partner atTDF VenturesMaryland
TDF Ventures websiteFirm profile

Steven Mankoff is a Partner at TDF Ventures. He previously held a senior vice president role at Siebel Systems and worked at Oracle.

What Steven can write

Writes checks of$500K to $10M
Comes in atPre-seed, Seed, Series ACan lead the round
Ownership target7-10%At first check
Best routeA warm introAsk a founder in their portfolio.

TDF Ventures writes $500K to $10M checks, larger than 71% of firms in the atlas.

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

Career

  1. Oracle
  2. Siebel Systems, Inc. · Senior Vice President Global and Technical Services
  3. TDF Ventures · Partner
    Now

Investments named in public bios

DrillingInfoNomis SolutionsOboPDI SoftwareRundeckTelestreamCloverpopStellar LoyaltyOpsPandaAppuriAspireship

Focus

Customer SuccessProductRoadmap

Education

Brown University, Bachelor of Science in Electrical EngineeringMIT Sloan School, Master of Science in Management

Also at TDF Ventures

Jim PastorizaPartner
Matt Bressler
Matt BresslerPrincipal
Will Rayner
Will RaynerPrincipal

Partners like Steven

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

Andrew Walsh
Andrew WalshManaging Director, First Analysis
Blake PattonFounder & Managing Partner, Tech Square Ventures
Akira KurabayashiManaging Partner / Head of Japan, DNX Ventures
Arthur KarellGeneral Partner, First In Capital
Jeff Hinck
Jeff HinckManaging Director, Rally Ventures
Soso SazeshSolo General Partner, Substance

Alert me when TDF Ventures is active

One email when Steven'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.

Send your deck

Questions

Who is Steven Mankoff?

Steven Mankoff is a Partner at TDF Ventures. He previously held a senior vice president role at Siebel Systems and worked at Oracle.

How much does Steven Mankoff invest?

Steven Mankoff invests through TDF Ventures, which writes checks of $500K to $10M at pre-seed, seed, series a.

How do I pitch Steven Mankoff?

A warm intro from a founder TDF Ventures backed works best.

What did Steven Mankoff do before TDF Ventures?

Oracle; Senior Vice President Global and Technical Services at Siebel Systems, Inc..

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