1,000+ matching jobs for “Principal Test Engineer”

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RTX

Principal Systems Engineer – Chief Engineer (Onsite)

El Segundo, California, United States

… to meet the demands of a rapidly evolving global market. The Secure Subsystems organization is seeking a Principal Systems Engineer – Chief Engineer to lead the modernization and certification of advanced military …

Added Oct 27, 2026

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Analog Devices

Principal Engineer, Design Verification

United Kingdom, Edinburgh, SC, Freer +2 locations

… planning, implementation, execution, and release of products to customers. The Design Verification Engineer will collaborate with the wider ADI technical community which affords an opportunity to work with many …

Added Nov 3, 2026

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Nvidia

Principal System Engineer, Operations

Santa Clara, California, United States

… team and see how you can make a lasting impact on the world. We are currently seeking a Datacenter Systems Engineer with a strong track record of demonstrating exceptional work behaviors to join our world-class Engineering …

Added Oct 27, 2026

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RTX

Principal Systems Engineer, Responsible Systems Engineer (RSE)

Tucson, Arizona, United States

… more secure world. Join us and help shape the future of aerospace and defense. The Systems Engineering and Test Center (SETC) organization is currently hiring a Principal Systems Engineer – Section Responsible Systems …

Added Oct 27, 2026

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RTX

Principal Systems Engineer, Responsible Systems Engineer (RSE)

Tucson, Arizona, United States

Added Oct 27, 2026

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RTX

Principal Systems Engineer – Software Systems Engineer (Onsite)

Tucson, Arizona, United States

… more secure world. Join us and help shape the future of aerospace and defense. The Systems Engineering and Test Capabilities (SETC) organization is currently hiring a Principal Systems Engineer to join our Tucson, AZ …

Added Oct 27, 2026

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RTX

Principal Power & Analog Design Engineer

McKinney, Texas, United States

… lifecycle from architecture and design through production and sustainment. The MPD department is seeking a Principal Power & Analog Design Engineer to join our team. This position is an onsite role. We are looking for …

Added Oct 27, 2026

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RTX

Senior Principal Digital Hardware Engineer

Huntsville, Alabama, United States

… of space to the blistering heat of the desert floor, to the high pressures of the ocean depths. The Senior Principal Electrical Engineer is responsible for the design, analysis, simulation, test, and integration of digital …

Added Oct 27, 2026

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Northrop Grumman

Sr Principal Simulation Software Engineer

United States-Florida-Melbourne +1 location

Pay posted by employer$116,300–$184,200

… only part of history, they're making history. Northrop Grumman Aeronautics Systems has an opening for a Sr Principal Simulation Software Engineer to join our team of qualified, diverse individuals within our Software …

Added Nov 3, 2026

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RTX

Principal Digital Hardware Design Engineer

Tucson, Arizona, United States

… of the desert floor, to the high pressures of the ocean depths. The Digital, RF and Power Team is seeking a Principal Digital Design Engineer with digital electronics design and analysis skills to join our team. This position …

Added Oct 27, 2026

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Johnson & Johnson

Principal R&D Systems Engineer

Boston, Massachusetts, United States

Pay posted by employer$117,000–$201,250

… on their journey to wellness. Learn more at https://www.depuysynthes.com/#what-we-do We are searching for Principal Robotics Systems Engineer to be based out of Boston, MA Purpose: Principal Robotics Systems Engineer is a …

Added Oct 20, 2026

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Palo Alto Networks

Principal Automation Engineer (Data Security)

Office - Israel - Tel Aviv

… and security drives priority and helps impact the entire security program. We are looking for a top–notch Principal/Senior software automation engineer to drive our test efforts in the Data Security team . As our engineer …

Added Oct 27, 2026

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Micron Technology

Principal Analog Verification Engineer

Boise, ID - Main Site

… and memory generations. Develop, maintain , and evolve Python-based analog and reliability verification test benches , tools, and flows to support robust and scalable verification execution. Provide technical …

Added Nov 3, 2026

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Analog Devices

Principal Engineer, Reliability Engineering

Limerick, Munster, Ireland

… on reliability risks, guardbands, and design recommendations. Develop and enhance intrinsic reliability test infrastructure , including ATE-based and custom stress systems. Define and advance next-generation …

Added Nov 3, 2026

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Northrop Grumman

Engineer/Principal Engineer RF Microwave Design (SkillBridge)

United States-Maryland-Baltimore

Pay posted by employer$87,600–$131,400

… Collaborating with peer functions such as Mechanical, Manufacturing, Quality, Supply Chain, and Test Utilizing world class manufacturing capabilities both on-site and within the broader company for …

Added Nov 3, 2026

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RTX

Senior Principal Digital Hardware Engineer

Huntsville, Alabama, United States

… help shape the future of aerospace and defense. The Hardware Engineering Directorate is seeking a Senior Principal Electrical Engineer with digital electronics design and analysis skills to join our team. We are looking …

Added Oct 27, 2026

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Comcast

Principal Adversary Emulation Engineer

Philadelphia, Pennsylvania, United States

Full time
Regular

… platforms from increasingly sophisticated cyber threats. We are seeking a Senior Adversary Emulation Engineer to help establish and mature adversary emulation as a repeatable capability within Threat Detection. This …

Added Oct 15, 2026

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Marvell Technology

Principal, Product Quality Engineer

Santa Clara, California, United States

Full time
Regular

… fleeting trends, Marvell is a place to thrive, learn, and lead. Your Team, Your Impact The Product Quality Engineer ( PQE) is a technical and execution leader responsible for end-to-end product quality and reliability …

Added Nov 3, 2026

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Leidos Holdings

Principal Integration Engineer SPM

Bethesda, Maryland, United States

Pay posted by employer$131,300–$237,350

This role requires an experienced Development Team Lead and Systems Engineer to perform as a Scrum Team Project Manager (SPM) in the IC environment. This role has direct leadership …

Added Nov 3, 2026

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Northrop Grumman

Sr Principal Engineer Embedded Software

United States-California-San Diego

Pay posted by employer$142,200–$213,400

… to fit your life and launch your career today. We are looking for you to join our team as a Sr. Principal Embedded Engineer Software based out of San Diego, CA. What You'll Get to Do: In this role you will design, …

Added Nov 3, 2026

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Comcast

Principal Adversary Emulation Engineer

Philadelphia, Pennsylvania, United States

Full time
Regular

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Required Qualifications · employer excerpt

Bachelor’s degree or equivalent experience in cybersecurity, computer science, information technology, engineering, or a related field.
7+ years of relevant cybersecurity experience, including hands-on experience in adversary emulation, red teaming, purple teaming, detection engineering, threat hunting, incident response, or security operations.
Strong understanding of adversary tradecraft, attacker lifecycle, MITRE ATT&CK, threat-informed defense, detection engineering, and enterprise security telemetry.
Experience safely planning and executing controlled security testing in large or complex enterprise environments, including rules of engagement, approvals, deconfliction, and evidence handling.
Proficiency with scripting or automation using Python and at least one additional language or shell such as PowerShell or Bash.

5 more in the full description below.

About this opportunity

Original employer description

Make your mark at Comcast -- a Fortune 30 global media and technology company. From the connectivity and platforms we provide, to the content and experiences we create, we reach hundreds of millions of customers, viewers, and guests worldwide. Become part of our award-winning technology team that turns big ideas into cutting-edge products, platforms, and solutions that our customers love. We create space to innovate, and we recognize, reward, and invest in your ideas, while ensuring you can proudly bring your authentic self to the workplace. Join us. You’ll do the best work of your career right here at Comcast. (In most cases, Comcast prefers to have employees on-site collaborating unless the team has been designated as virtual due to the nature of their work. If a position is listed with both office locations and virtual offerings, Comcast may be willing to consider candidates who live greater than 100 miles from the office for the remote option.)

Job Summary

Comcast Cybersecurity protects Comcast, our customers, our workforce, our partners, and our technology platforms from increasingly sophisticated cyber threats. We are seeking a Senior Adversary Emulation Engineer to help establish and mature adversary emulation as a repeatable capability within Threat Detection.

This role sits at the intersection of adversary emulation, threat detection engineering, threat hunting, telemetry validation, and purple team operations. The successful candidate will design and execute controlled, threat-informed emulation scenarios; validate detection coverage across enterprise telemetry sources; generate high-fidelity data for threat hunting; and translate findings into improved detections, hunt content, logging requirements, automations, and actionable reporting.

This is a hands-on senior engineering role for someone who can operate safely in complex enterprise environments, partner across cyber and engineering teams, and help Comcast continuously prove and improve its ability to detect real-world adversary behavior.

Job Description

Core Responsibilities

Help establish and mature Comcast’s adversary emulation capability, including operating model, rules of engagement, approval workflows, success metrics, reporting standards, and repeatable validation processes.
Design, plan, and execute controlled adversary emulation scenarios based on current threat intelligence, priority adversary behaviors, emerging attack techniques, and Comcast-relevant risk scenarios.
Emulate real-world attacker tactics, techniques, and procedures using frameworks such as MITRE ATT&CK, while maintaining strict safety, deconfliction, and operational controls.
Build automation and AI-assisted workflows to streamline emulation planning, evidence collection, test execution, detection validation, reporting, and metrics tracking, with appropriate human review, auditability, and governance.
Partner with Threat Detection Engineering to validate detection coverage, alert fidelity, enrichment quality, triage workflows, and detection lifecycle effectiveness.
Partner with Threat Hunting to generate high-fidelity telemetry, validate hunt hypotheses, and convert emulation outcomes into reusable hunt content.
Identify and document logging gaps, telemetry quality issues, detection blind spots, enrichment deficiencies, and control weaknesses across endpoint, identity, cloud, network, email, SaaS, application, and data-platform sources.
Develop repeatable emulation playbooks, test cases, validation workflows, and reporting artifacts that can be reused across priority threats and enterprise environments.
Evaluate adversary emulation, breach-and-attack simulation, security validation, and emerging AI-enabled security technologies for use within Comcast’s threat operations environment.
Support purple team exercises, threat-informed defense initiatives, after-action reviews, and continuous improvement efforts across cyber operations.
Produce clear technical reports and executive-ready summaries that translate emulation results into prioritized recommendations, measurable detection improvements, and risk-informed remediation actions.
Collaborate across Cybersecurity, Security Operations, Security Incident Response, Threat Intelligence, Threat Hunting, Detection Engineering, Security Engineering, Cloud, Identity, Endpoint, Network, Product, and other technical teams.

Required Qualifications

Bachelor’s degree or equivalent experience in cybersecurity, computer science, information technology, engineering, or a related field.
7+ years of relevant cybersecurity experience, including hands-on experience in adversary emulation, red teaming, purple teaming, detection engineering, threat hunting, incident response, or security operations.
Strong understanding of adversary tradecraft, attacker lifecycle, MITRE ATT&CK, threat-informed defense, detection engineering, and enterprise security telemetry.
Experience safely planning and executing controlled security testing in large or complex enterprise environments, including rules of engagement, approvals, deconfliction, and evidence handling.
Proficiency with scripting or automation using Python and at least one additional language or shell such as PowerShell or Bash.
Experience applying AI-assisted workflows or agentic automation to cybersecurity use cases with appropriate safety, review, and governance controls.
Experience working with SIEM, XDR, EDR, endpoint telemetry, identity logs, cloud logs, network data, email security telemetry, and/or application security telemetry.
Ability to write, review, or validate detection and hunting logic using query languages or formats such as SPL, KQL, SQL, Sigma, YARA, or similar.
Strong analytical, documentation, and communication skills, including the ability to explain technical findings, detection gaps, and risk implications to technical and non-technical stakeholders.
Ability to work independently, exercise sound judgment, and collaborate across multiple teams in a fast-moving enterprise security environment.

Preferred Qualifications

Experience helping build or mature an adversary emulation, purple team, detection validation, or security validation function.
Experience with adversary emulation and validation tools such as Atomic Red Team, MITRE Caldera, Mandiant Security Validation, Cymulate, AttackIQ, Prelude Operator, or similar platforms.
Experience turning emulation results into production detections, hunt content, logging requirements, dashboards, runbooks, and measurable detection coverage improvements.
Experience with cloud, SaaS, identity, container, CI/CD, endpoint, network, or large-scale data-platform security testing.
Relevant certifications such as GCIH, GCIA, GPEN, GXPN, GREM, GCFA, OSCP, OSEP, CRTO, CISSP, or equivalent experience.

What Success Looks Like

Comcast has a repeatable adversary emulation operating model with clear rules of engagement, test plans, approval workflows, metrics, and reporting.
Priority threat scenarios are translated into safe, repeatable emulation exercises mapped to MITRE ATT&CK and Comcast-relevant risk areas.
Detection Engineering receives clear validation results that improve detection coverage, alert fidelity, enrichment, and response workflows.
Threat Hunting receives high-quality telemetry and validated hypotheses that improve hunt effectiveness.
Logging gaps, blind spots, and data quality issues are documented, prioritized, and converted into actionable remediation work.
Emulation outcomes are consistently converted into detections, hunts, dashboards, reports, and measurable improvements to Comcast’s cyber defense posture.
Cross-functional partners view adversary emulation as a trusted, safe, and valuable capability that improves enterprise readiness against real-world threats.

Skills

Artificial Intelligence Technologies, Cyber Defense, Cyber Threat Intelligence, Incident Response, Penetration Testing, Security Engineering, Security Testing

We believe that benefits should connect you to the support you need when it matters most, and should help you care for those who matter most. That's why we provide an array of options, expert guidance and always-on tools that are personalized to meet the needs of your reality—to help support you physically, financially and emotionally through the big milestones and in your everyday life.

Please visit the benefits summary on our careers site for more details.

Education

Bachelor's Degree

While possessing the stated degree is preferred, Comcast also may consider applicants who hold some combination of coursework and experience, or who have extensive related professional experience.

Certifications (if applicable)

Relevant Work Experience

10 Years +

Comcast is an equal opportunity workplace. We will consider all qualified applicants for employment without regard to race, color, religion, age, sex, sexual orientation, gender identity, national origin, disability, veteran status, genetic information, or any other basis protected by applicable law.

Why this result? · Employer labels

Keywords also found in description

Full time
Information Technology
Regular

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