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Keywords: Principal Software Engineer, Security, Location: USA

Page: 2

Principal Software Engineer - Copilot Security

Develop and ship agentic AI-powered security features that protect users from threats such as prompt injection... agents that leverage information flow analysis and apply common sense and judgement guardrails for security and privacy...

Company: Microsoft
Location: Redmond, WA
Posted Date: 12 Dec 2025

Principal Software Engineer - Security Architect

Partner with engineering teams to understand and improve the security posture of many systems related to Identity... Collaborate with teams to bring to fruition cross-company security initiatives Assist engineering teams in resolving difficult...

Company: Microsoft
Location: Redmond, WA
Posted Date: 11 Dec 2025

Principal Software Engineer - Copilot Security

Develop and ship agentic AI-powered security features that proactively protect users from threats such as prompt... for security and privacy. Collaborate with product, engineering, security, privacy, and AI teams to drive adoption of agentic...

Company: Microsoft
Location: Redmond, WA
Posted Date: 10 Dec 2025

Principal Security Engineer - GenAI and Emerging Tech - Remote

Principal Security Engineer - IS06BE We’re determined to make a difference and are proud to be an insurance company... and advanced information security capabilities. As the Principal Security Engineer this position will set the security direction...

Company: The Hartford
Location: Hartford, CT
Posted Date: 01 Feb 2026

Principal Cyber Security Engineer

Security Engineer to contribute to the development and deployment of Cyber Security solutions on the Starburst program... U.S. government issued security clearance is required prior to start date.​ U.S. citizenship is required, as only U.S. citizens...

Location: Largo, FL
Posted Date: 01 Feb 2026

Principal Cyber Security Engineer

a motivated and mission-driven Principal Cyber Security Engineer to join our team in Chantilly, VA. You will help ensure the...Unlock the secrets of intelligence with MANTECH! Join a dynamic team at the forefront of national security, providing...

Company: ManTech
Location: Chantilly, VA
Posted Date: 29 Jan 2026

Sr. Principal Systems Security Engineer

application software security in 100% Agile Development and Operational environment(s). The Senior Systems Security Engineer... integrated product teams to develop and decompose software security requirements, technical architectures, system designs...

Company: Northrop Grumman
Location: Virginia
Posted Date: 28 Jan 2026

Comcast Cybersecurity: Principal Security R&D Engineer

a highly skilled and innovative Principal Cybersecurity Engineer to lead research and development of advanced security..., and hardware/software integration, while leveraging cybersecurity and privacy knowledge to build robust security solutions. The...

Company: Xfinity
Location: Philadelphia, PA
Posted Date: 28 Jan 2026

Senior Principal System Security Engineer (Program (Anti-Tamper/Program Protection) P5 (Onsite)

Principal Systems Security Engineer (Anti-Tamper/Program Protection) – P5 to join our elite Systems Security Engineering (SSE... Engineering creates holistic security solutions leveraging Cybersecurity, Software Assurance, and Supply Chain Risk Management...

Posted Date: 24 Jan 2026

Principal Application Security Engineer

to do your most meaningful work here. I. Job Summary The Principal Application Security Engineer is responsible for defining and driving the... within the software development lifecycle (SDLC) and DevSecOps pipelines. The architect will lead efforts to implement security...

Company: Waste Management
Location: Houston, TX
Posted Date: 23 Jan 2026

Principal Systems Security Engineer (Cyber Engineer) P4 (Onsite)

-qualified Principal System Security Engineer (Cyber Engineer) - P4 to join our elite Systems Security Engineering (SSE) team... Engineering creates holistic security solutions leveraging Cyber Security, Software Assurance and Supply Chain Risk Management...

Posted Date: 23 Jan 2026

Principal Systems Security Engineer (Anti-Tamper/Program Protection) P4 (Onsite)

Systems Security Engineer (Anti-Tamper/Program Protection) – P4 to join our elite Systems Security Engineering (SSE) team... Engineering creates holistic security solutions leveraging Cybersecurity, Software Assurance, and Supply Chain Risk Management...

Posted Date: 23 Jan 2026

Principal Endpoint Security Systems Engineer

Leidos has an exciting opportunity a Principal Endpoint Security Systems Engineer in our Intel Security Sector... an experienced endpoint security systems engineer to join our Cyber Security Engineering team. The focus of this team member...

Company: Leidos
Location: Bethesda, MD
Posted Date: 22 Jan 2026

Senior Principal Cyber Security Engineer

a motivated, career and customer-oriented Senior Principal Cyber Security Engineer to join our team in Chantilly, VA. This role... network deployments and data centers Hands-on experience deploying and/or supporting enterprise security software products...

Company: ManTech
Location: Chantilly, VA
Posted Date: 22 Jan 2026

Senior Principal Embedded SW Security Engineer

Software Security Sensors and Effectors Department is looking for a Senior Principal Embedded S/w Security Engineer in Tucson... performance implications associated with specific System Security implementations. As a Senior Principal Embedded S/w Security...

Location: Tucson, AZ
Posted Date: 17 Jan 2026

Network Security Engineer - Principal (w/ active TS)

Network Security Engineer - Principal (w/ active TS) Location: Arlington, VA Clearance: TS/SCI Schedule: TBD Full...-time JOB DESCRIPTION Critical Solutions is seeking an experienced Network Security Engineer to support our federal...

Location: Arlington, VA
Posted Date: 16 Jan 2026

Principal Security Engineer

across Zillow Group. About the role As a Principal Security Engineer, you will be a senior technical leader responsible... to embed security throughout the software development lifecycle. We play a critical role in strengthening cloud-native...

Company: Zillow
Location: USA
Posted Date: 15 Jan 2026

Principal Systems Security Engineer

Job Description Job Title: Principal Systems Security Engineer Working Pattern: Full-time Working location...: Indianapolis, IN (Hybrid Work Schedule) We’re looking for a Principal Systems Security Engineer (cyber-physical embedded systems...

Company: Rolls-Royce
Location: Indianapolis, IN
Posted Date: 11 Jan 2026
Salary: $110476 - 179524 per year

Principal Product Security Engineer

to mitigate risks, protect our customers, protect our assets, and enable secure activities. The Principal Security Engineer...: Static Application Security Testing (SAST), Dynamic Application Security Testing (DAST), Software Composition Analysis (SCA...

Company: Aspen Technology
Location: Bedford, MA
Posted Date: 18 Dec 2025
Salary: $120900 - 151100 per year

Principal / Senior Principal Embedded Systems Security Engineer

best work of your career. We are looking for a Principal / Senior Principal Embedded Systems Security Engineer... ability to obtain Special Program Access. This position can be filled as a Principal Embedded Systems Security Engineer...

Company: Northrop Grumman
Location: Baltimore, MD
Posted Date: 13 Dec 2025
Salary: $119600 - 179400 per year