BUILDLIST

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BUILDLIST/TWENTY

Twenty

Builds offensive cyber capabilities.

DefenseSeries A

HQ

Virginia

Founded

2024

Employees

1-20

Total Raised

$38M

Last Round

Series A

Last Round Date

Nov 2025

Founders

Joe Lin, Leo Olson, Skyler Onken, Pete Sorrentino

15 jobs

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Job Types

Experience Levels

Metro

Open Positions (15)

Defense💻 Software & Data · Staff / Principal

Staff Backend Engineer

Defense💻 Software & Data · Staff / Principal

Staff Frontend Engineer

Defense🤖 AI & Autonomy · Senior

Offensive Cyber Research Engineer

Defense📋 Product, Programs, & Systems · Senior

Cyber Mission Architect – Intelligence Community

Defense💻 Software & Data · Staff / Principal

Principal Backend Engineer

Defense🔒 Infrastructure, IT, & Security · Mid-Level

DevOps Engineer

Defense🤖 AI & Autonomy · Director

Director of Offensive Cyber Research

Defense🤖 AI & Autonomy · Staff / Principal

Principal Offensive Cyber Research Engineer

Defense🤖 AI & Autonomy · Senior

Applied AI Engineer

Defense💻 Software & Data · Manager

Senior Manager Engineering

Defense👥 Business & People Ops · Mid-Level

Talent Acquisition Coordinator (Contract-to-Hire)

Defense💻 Software & Data · Senior

Full Stack Engineer

Defense💻 Software & Data · Staff / Principal

Staff Data Engineer - TS/SCI Cleared

Defense📣 Business Dev & Customer Ops · Senior

Senior Forward Deployed Analyst

Defense💻 Software & Data · Mid-Level

Backend Engineer