principal cyber security engineer Jobs

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Principal Cybersecurity Engineer

Software Guidance & Assistance

•

McConnellsburg, Pennsylvania, USA

Full-time

Software Guidance & Assistance, Inc., (SGA), is searching for a Principal Cybersecurity Engineer for a Direct Hire opportunity with one of our premier clients in McConnellsburg, PA. Serve as a cybersecurity expert or coach in areas including network and application design, operating systems, endpoint protection, mobile device security, and foundational cybersecurity controls across on-premises and cloud environments (IaaS, PaaS, SaaS). Conduct security assessments and recommend appropriate contr
Posted 7 days ago | Updated 9 hours ago

Principal Cyber Security Engineer

ManTech

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Chantilly, Virginia, USA

Full-time

MANTECH seeks a motivated and customer-focused Principal Cyber Security Engineer to join our team in Chantilly, VA. In this role, you will help design, implement, and sustain mission-driven cybersecurity solutions that enable secure enterprise operations. You will provide technical leadership and hands-on expertise in supporting Comply-to-Connect (C2C) systems across both classified and unclassified environments. Responsibilities include but are not limited to: Engineering, designing, implement
Posted 1 day ago | Updated 6 hours ago

Principal Cyber Security Engineer

ManTech

•

Chantilly, Virginia, USA

Full-time

MANTECH seeks a motivated and customer-focused Principal Cyber Security Engineer to join our team in Chantilly, VA. In this role, you will help design, implement, and sustain mission-driven cybersecurity solutions that enable secure enterprise operations. You will provide technical leadership and hands-on expertise in supporting Comply-to-Connect (C2C) systems across both classified and unclassified environments. Responsibilities include but are not limited to: Engineering, designing, implement
Posted 1 day ago | Updated 6 hours ago

Principal Cyber Security Engineer

ManTech

•

Chantilly, Virginia, USA

Full-time

MANTECH seeks a motivated and customer-focused Principal Cyber Security Engineer to join our team in Chantilly, VA. In this role, you will help design, implement, and sustain mission-driven cybersecurity solutions that enable secure enterprise operations. You will provide technical leadership and hands-on expertise in supporting Comply-to-Connect (C2C) systems across both classified and unclassified environments. Responsibilities include but are not limited to: Engineering, designing, implement
Posted 1 day ago | Updated 6 hours ago

Principal Cybersecurity Engineer (HP NonStop/Xypro)

Discover

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Remote or Riverwoods, Illinois, USA

Full-time

Discover. A brighter future. With us, you'll do meaningful work from Day 1. Our collaborative culture is built on three core behaviors: We Play to Win, We Get Better Every Day & We Succeed Together. And we mean it - we want you to grow and make a difference at one of the world's leading digital banking and payments companies. We value what makes you unique so that you have an opportunity to shine. Come build your future, while being the reason millions of people find a brighter financial future
Posted 1 day ago | Updated 9 hours ago

Principal Cybersecurity Engineer (HP NonStop/Xypro)

Discover

•

Remote or Houston, Texas, USA

Full-time

Discover. A brighter future. With us, you'll do meaningful work from Day 1. Our collaborative culture is built on three core behaviors: We Play to Win, We Get Better Every Day & We Succeed Together. And we mean it - we want you to grow and make a difference at one of the world's leading digital banking and payments companies. We value what makes you unique so that you have an opportunity to shine. Come build your future, while being the reason millions of people find a brighter financial future
Posted 1 day ago | Updated 9 hours ago

Principal Cyber Security Engineer

ManTech

•

Chantilly, Virginia, USA

Full-time

Mantech seeks a motivated and customer-focused Principal Cyber Security Engineer to join our team in Chantilly, VA. In this role, you will help design, implement, and sustain mission-driven cybersecurity solutions that enable secure enterprise operations. You will provide technical leadership and hands-on expertise in supporting Comply-to-Connect (C2C) systems across both classified and unclassified environments. Responsibilities include but are not limited to: Engineering, designing, implement
Posted 34 days ago | Updated 6 hours ago

Senior Principal Cyber Security Engineer

ManTech

•

Denver, Colorado, USA

Full-time

ManTech seeks a motivated, career and customer-oriented Senior Principal Cyber Security Engineer to join our team in the Denver, CO. Responsibilities include but are not limited to: Troubleshoot new and current data collection issuesTroubleshoot system issues that make the system unstable or unusable.Deploy and manage all supported and unsupported Splunk Add-ons that are required for specific data sourcesProvide documentation such as body of evidence documents (as needed), engineering documents
Posted 8 days ago | Updated 6 hours ago

Principal Cybersecurity Engineer - Cyber Defense (US Federal)

Workday, Inc.

•

McLean, Virginia, USA

Full-time

Your work days are brighter here. At Workday, it all began with a conversation over breakfast. When our founders met at a sunny California diner, they came up with an idea to revolutionize the enterprise software market. And when we began to rise, one thing that really set us apart was our culture. A culture which was driven by our value of putting our people first. And ever since, the happiness, development, and contribution of every Workmate is central to who we are. Our Workmates believe a h
Posted 60+ days ago | Updated 11 hours ago

Principal Cybersecurity Engineer ( Platform Engineering )

Discover

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Remote or Riverwoods, Illinois, USA

Full-time

Discover. A brighter future. With us, you'll do meaningful work from Day 1. Our collaborative culture is built on three core behaviors: We Play to Win, We Get Better Every Day & We Succeed Together. And we mean it - we want you to grow and make a difference at one of the world's leading digital banking and payments companies. We value what makes you unique so that you have an opportunity to shine. Come build your future, while being the reason millions of people find a brighter financial future
Posted 3 days ago | Updated 9 hours ago

Principal Cybersecurity Engineer ( Platform Engineering )

Discover

•

Remote or Riverwoods, Illinois, USA

Full-time

Discover. A brighter future. With us, you'll do meaningful work from Day 1. Our collaborative culture is built on three core behaviors: We Play to Win, We Get Better Every Day & We Succeed Together. And we mean it - we want you to grow and make a difference at one of the world's leading digital banking and payments companies. We value what makes you unique so that you have an opportunity to shine. Come build your future, while being the reason millions of people find a brighter financial future
Posted 3 days ago | Updated 9 hours ago

Principal Cybersecurity Systems Engineer

Leidos

•

Linthicum Heights, Maryland, USA

Full-time

Are you seeking a new and challenging position supporting a complex, mission-critical Program? Well, look no further! Leidos is currently looking to add a Sr. Systems Engineer to an Information Assurance Program near Ft. Meade, MD. The successful candidate will participate in the development/evaluation of system engineering documentation, such as System Engineering Plans, Initial Capabilities Documents, Requirements Specifications, security requirements and security testing documents. Provide t
Posted 9 days ago | Updated 11 hours ago

Principal Cybersecurity Engineer

NuLeap

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Remote or US

Third Party

Job Summary (List Format): - Lead the design and implementation of secure, scalable, and high-performance cloud-based systems. - Architect and develop backend systems using Rust (Tokio, Actix, Axum, Rocket) and Scala (Akka, ZIO, Cats, Play). - Ensure secure execution environments utilizing WebAssembly (WASM). - Employ extensive AWS services (Lambda, ECS, S3, API Gateway, CloudFront, DynamoDB, GuardDuty, WAF, Security Hub, KMS) for cloud infrastructure and security. - Implement and enforce AP
Posted 58 days ago | Updated 2 days ago

Principal Cybersecurity Engineer ( Platform Engineering )

DISCOVER

•

Riverwoods, Illinois, USA

Full-time

Discover. A brighter future. With us, you'll do meaningful work from Day 1. Our collaborative culture is built on three core behaviors: We Play to Win, We Get Better Every Day & We Succeed Together. And we mean it - we want you to grow and make a difference at one of the world's leading digital banking and payments companies. We value what makes you unique so that you have an opportunity to shine. Come build your future, while being the reason millions of people find a brighter financial future
Posted 11 hours ago

Principal Cybersecurity Engineer

T-Mobile

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Washington, USA

Full-time

At T-Mobile, we invest in YOU! Our Total Rewards Package ensures that employees get the same big love we give our customers. All team members receive a competitive base salary and compensation package - this is Total Rewards. Employees enjoy multiple wealth-building opportunities through our annual stock grant, employee stock purchase plan, 401(k), and access to free, year-round money coaches. That's how we're UNSTOPPABLE for our employees! Job Overview The Cybersecurity Engineer will be a crit
Posted 60+ days ago | Updated 11 hours ago

Principal Cybersecurity Engineer (Hybrid-Puerto Rico)

RTX Corporation

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Remote or Aguadilla, Aguadilla, Puerto Rico

Full-time

Date Posted: 2025-04-15 Country: United States of America Location: HPR01: Collins Puerto Rico- Aguadilla Road 110 North Km 28.8 San Antonio Industrial Park, Aguadilla, PR, 00603 USA Position Role Type: Hybrid U.S. Citizen, U.S. Person, or Immigration Status Requirements: Security Clearance: None/Not Required Collins Aerospace has an exciting opportunity for an experienced Software/Cybersecurity Engineer. We are looking for a strong, passionate problem-solver with an action-oriented, collabor
Posted 60+ days ago | Updated 11 hours ago

Principal Systems / Cyber Security Engineer (Onsite)

RTX Corporation

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Cedar Rapids, Iowa, USA

Full-time

Date Posted: 2025-06-26 Country: United States of America Location: HIA33: Cedar Rapids, IA (Intertrade) 400 Collins Road NE MS 153-220, Cedar Rapids, IA, 52411-6636 USA Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is required prior to start date.Security Clearance: DoD Clearance: Secret Join our highly visible team and perform technically challenging assignments, which will closely
Posted 27 days ago | Updated 11 hours ago

Principal Cybersecurity Network Engineer - Critical Infrastructure

AT&T Inc.

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Charlotte, North Carolina, USA

Full-time

Job Description: This position requires office presence of a minimum of 5 days per week and is only located in the location(s) posted. No relocation is offered. Join AT&T and reimagine the communications and technologies that connect the world. Our Chief Security Office ensures that our assets are safeguarded through truthful transparency, enforce accountability and master cybersecurity to stay ahead of threats. Bring your bold ideas and fearless risk-taking to redefine connectivity and transf
Posted 11 days ago | Updated 11 hours ago

Principal Full Stack Cybersecurity Engineer

T-Mobile

•

Washington, USA

Full-time

At T-Mobile, we invest in YOU! Our Total Rewards Package ensures that employees get the same big love we give our customers. All team members receive a competitive base salary and compensation package - this is Total Rewards. Employees enjoy multiple wealth-building opportunities through our annual stock grant, employee stock purchase plan, 401(k), and access to free, year-round money coaches. That's how we're UNSTOPPABLE for our employees! Advertising, meet the Un-carrier. We are standing up f
Posted 60+ days ago | Updated 11 hours ago

Principal Cybersecurity/Reverse Engineer/Malware Engineer Hands On

Case Interactive

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Middletown Township, New Jersey, USA

Full-time

Job Detail: Principal Cyber Security Engineer Role Overview: Company has an outstanding career opportunity for a senior level Cyber Security Engineer with a specialization in Reverse Engineering. In this role, you will dissect and analyze malicious software, uncover vulnerabilities, and develop robust security measures to protect our clients' critical infrastructure. Responsibilities Conduct reverse engineering of malware, exploits, and other security threats.Analyze and deconstruct software to
Easy Apply
Posted 60+ days ago | Updated 1 day ago