Endpoint Security Engineer III

Blue Origin; Seattle (WA); On-site; USD 140,000 - 190,000; Full time

Job summary

Blue Origin is seeking a Security Engineer for the Endpoint Experience team within Enterprise Technology in Seattle. You will protect and secure endpoints used by engineers, technicians, and business teams, adding impact across the fleet.

Responsibilities include owning Defender for Endpoint coverage across Windows, macOS, Linux, maintaining integrity, and driving vulnerability remediation. You will work with Tanium and other tools to strengthen posture and respond to vendor escalations.

Qualifications

• Experience securing enterprise endpoints.
• Strong knowledge of Defender for Endpoint and Tanium.
• Ability to balance security outcomes with engineering workload.

Responsibilities

• Own endpoint detection and response coverage across the fleet: onboarding/offboarding, agent lifecycle, platform build currency, and tamper protection on Windows, macOS, and Linux.
• Monitor and remediate sensor health, reconciling Defender coverage against inventory to find and fix unmonitored endpoints.
• Manage antivirus and protection policy: scan behavior, definition currency, attack surface reduction rules, exclusions, and platform-specific configuration.
• Write and maintain advanced hunting queries to answer posture and exposure questions.
• Operate diagnostic tooling and drive vendor cases to resolution when platform defects affect the fleet.
• Act on security recommendations and vulnerability findings surfaced by the platform.

Skills

Endpoint security

EDR tooling

Tanium

Windows/macOS/Linux

Threat hunting

Tools

Microsoft Defender for Endpoint

Tanium

Job description

Application close date:

Applications will be accepted on an ongoing basis until the requisition is closed.

At Blue Origin, we envision millions of people living and working in space for the benefit of Earth. We're working to develop reusable, safe, and low-cost space vehicles and systems within a culture of safety, collaboration, and inclusion. Join our team of problem solvers as we add new chapters to the history of spaceflight!

This role is part of Enterprise Technology (ET), where we're developing the digital infrastructure needed to build the road to space, with an emphasis on digital capabilities required to advance Blue Origin's mission. Enterprise Technology is the center of excellence for digital technology at Blue Origin, providing oversight and governance to align technology and business strategies.

As part of a small, accomplished team of experts, you will protect and secure the endpoints that Blue Origin's engineers, technicians, and business teams depend on every day. You will share in the team's impact on all aspects of endpoint security, and you will lead and assist with many aspects of operations and engineering on the Endpoint Experience team.

Security engineers evaluate, select, procure, implement, and operate security technology supporting enterprise and space systems. This role is the technical lead for our AV and EDR stack - Microsoft Defender for Endpoint and Tanium - and it is deliberately operating-system agnostic. You will be expected to reason about detection coverage, agent health, and security posture with equal fluency across all systems.

We are looking for someone to apply their technical expertise, leadership skills, and commitment to quality to positively impact safe human spaceflight. Passion for our mission and vision is required.

Responsibilities

Microsoft Defender for Endpoint

• Own endpoint detection and response coverage across the fleet: onboarding and offboarding, agent lifecycle, platform build currency, and tamper protection, on Windows, macOS, and Linux.
• Monitor and remediate sensor health, and continuously reconcile Defender coverage against authoritative inventory so that unmonitored endpoints are found and fixed rather than discovered during an incident.
• Manage antivirus and protection policy - scan behavior, definition currency, at tack surface reduction rules, exclusions, and platform-specific configuration - balancing security outcome against engineering workload impact.
• Write and maintain advanced hunting queries to answer posture and exposure questions, and understand the limits of what endpoint telemetry can and cannot show.
• Operate diagnostic tooling (client analyzers and equivalent) and drive vendor cases to resolution when platform defects affect the fleet.
• Act on security recommendations and vulnerability findings surfaced by the platform, prioritizing by real exposure rather than raw score.

Tanium

• Own the architecture, configuration, and operation of the enterprise endpoint management and security platform