Security Engineer Jobs in Washington D.C.

63 open Security Engineer jobs in Washington D.C. at 23 companies, including SpaceX, xAI and HackerOne. Updated daily from company career pages.

SpaceX

SpaceX is an aviation and aerospace company that focuses on reducing the costs associated with space travel by using reusable rockets.

xAI

xAI is an AI company that seeks to understand the true nature of the universe.

HackerOne

HackerOne is a powered security platform that connects businesses with penetration testers and cybersecurity researchers.

Anduril Industries

Anduril Industries is a defense product company that builds technology for military agencies and border surveillance.

7 more open roles at Anduril Industries

Humana

Humana creates innovative solutions and resources that help people with their healthcare needs.

T. Rowe Price

T. Rowe Price is an investment management firm that focuses on funding technology startups.

Booz Allen Hamilton

Booz Allen Hamilton is a consulting firm that specializes in analytics, technology, and engineering.

3 more open roles at Booz Allen Hamilton

True Anomaly

True Anomaly develops space security technologies using AI, software, and spacecraft to enhance global security and sustainability.

Palantir Technologies

Palantir Technologies is a software company that develops data analytics and data integration software solutions.

1 more open roles at Palantir Technologies

Anthropic

Anthropic is an AI safety and research company that focuses on increasing the safety of large-scale AI systems.

Databricks

Databricks is an AI cloud data platform that interacts with corporate information stored in the public cloud.

S&P Global

S&P Global is a market intelligence company that provides financial information and data analytics services.

Samsara

Samsara is the pioneer of the Connected Operations Cloud.

ServiceNow

Scale AI

Scale AI is the data platform for AI, providing training data for leading machine learning teams.

Upside

Upside is a two-sided marketplace focused on driving value to all points of brick and mortar commerce.

Aledade

Aledade is a primary care center.

SpecterOps

SpecterOps is a cybersecurity company that provides services and training solutions to help enterprises defend against attacks.

Cape

Cape develops privacy-enabling technology that allows users to reclaim their privacy and security on electronic devices.

Clara

Clara is a LatAm business credit card, payment solution, and expense tracking platform.

Updated 2026-10-10.