Sr. Cybersecurity Engineer

Enterprise Security Network Segmentation Distributed Firewall Information Technology Stakeholder Engagement Hybrid Cloud Computing IT Security Architecture Commercial Off-the-Shelf Software Technical Review Public Key Infrastructure Product Family Engineering Backup and Recovery System Enterprise Network Security Infrastructure as Code (IaC) Software-Defined Data Center Python (Programming Language) Virtual Private Networks (VPN) Identity And Access Management Application Delivery Controller Troubleshooting (Problem Solving) Software Defined Networking (SDN) Infrastructure As A Service (IaaS) Application Programming Interface (API) Security Information And Event Management (SIEM) Security Orchestration Automation and Response (SOAR), Join the Leidos Homeland Sector and contribute to a high-impact international program delivering secure, next-generation private cloud capabilities within a NATO-secured environment. This senior-level role offers the opportunity to apply deep technical expertise to the design, integration, and hands-on implementation of enterprise backup, recovery, and cyber resilience solutions supporting a Software-Defined Data Center (SDDC).

You will help deliver secure, resilient, and automated data protection capabilities across Enterprise Core Services (ECS), Client Provisioning Services (CPS), Infrastructure as a Service (IaaS), and Service Management Control (SMC). Working closely with infrastructure, virtualization, cybersecurity, and DevOps teams, you will support the full delivery lifecycle-from solution design and integration through site deployment, testing, disaster recovery validation, and customer acceptance.

This position offers an exciting opportunity to work directly with international customers and technical partners, with approximately 25% travel to The Hague, Netherlands, and other NATO locations as needed to support solution integration, implementation, testing, and customer acceptance. It is an ideal opportunity for a senior engineering leader interested in advancing mission-critical cloud capabilities while gaining valuable international program experience., * Lead the design, automation, integration, and hands-on implementation of enterprise firewall and network security solutions supporting private cloud SDDC modernization initiatives.

• Design and implement secure firewall architectures supporting Enterprise Core Services (ECS), Client Provisioning Services (CPS), Infrastructure as a Service (IaaS), DevOps platforms, and Service Management Control (SMC).
• Develop and implement network segmentation strategies using Palo Alto Networks, VMware NSX Distributed Firewall, Cisco security technologies, or equivalent enterprise security platforms.
• Design and integrate enterprise security controls, micro-segmentation, identity-based access controls, and defence-in-depth principles supporting NATO Operational Network (ON) security requirements.
• Collaborate with cybersecurity, networking, virtualization, and infrastructure engineering teams to integrate enterprise security services into platform solutions.
• Develop security automation using Infrastructure as Code (IaC), Ansible, Terraform, APIs, or similar automation technologies to standardize firewall configuration and policy management.
• Integrate Commercial Off-The-Shelf (COTS) security solutions into secure enterprise environments while ensuring compliance with NATO security policies, programme requirements, and customer security architecture.
• Develop and maintain firewall architectures, security designs, implementation plans, configuration standards, and engineering documentation.
• Participate in Agile development activities including sprint planning, technical reviews, security architecture reviews, and cross-functional engineering collaboration.
• Mentor engineers and provide technical guidance on enterprise firewall engineering, network security, defence-in-depth principles, and secure-by-design engineering practices.
• Travel to NATO sites to install, configure, integrate, validate, and troubleshoot enterprise firewall and network security solutions while supporting deployment, commissioning, security testing, and customer acceptance activities.
• Support cybersecurity planning, infrastructure modernization initiatives, security accreditation activities, and proposal development., Network Automation Local Area Networks Investment Concepts Technology Solutions Architectural Design Business Requirements Solution Architecture Technology Life Cycle Technical Requirements Permanent Resident Cards Code Of Federal Regulations Change Management Processes Security Requirements Analysis Virtual Private Networks (VPN) Cisco Identity Services Engine (ISE) Cisco Certified Network Professional Certified Information Systems Security Professional Cisco Certified Network Professional (CCNP) Routing And Switching +0

Google Project Management Security Engineer (Email Security Mgmt) TEKsystems

Tysons, VA*Remote

Auditing Phishing Operations Leadership Management Mitigation AI Security Team Oriented Data Security Cyber Security Cloud Security Email Security Security Tools Self-Motivation Network Routing Computer Science Network Security Cyber Operations Google Workspace Incident Response Business Valuation Amazon Web Services Information Privacy Data Classification Security Engineering Lifecycle Management Programming Languages Packaging And Labeling Information Technology Full Stack Development Email Service Providers Artificial Intelligence Business Transformation Configuration Management Identity And Access Management Enterprise Application Software Troubleshooting (Problem Solving) SMTP (Simple Mail Transfer Protocol) +0 Sr. Cybersecurity Engineer TEKsystems

Ansible Planning Firewall Equities Terraform DevSecOps Leadership Automation Resilience Market Data RESTful API Communication Private Cloud Cyber Security Virtualization Access Controls Solution Design Network Routing Sprint Planning Ancient History Computer Science Network Security Security Testing Secret Clearance Cyber Resilience Agile Methodology Security Policies Disaster Recovery Policy Management Service Management Security Solutions, * Bachelor’s degree in Computer Science, Information Technology, Engineering, Cybersecurity, or related discipline with 8-12 years of relevant experience, or Master’s degree with 6-10 years of relevant experience.

• Active NATO Secret clearance (or higher).
• Demonstrated experience designing and implementing enterprise firewall and network security solutions.
• Strong experience with Palo Alto Networks firewalls, including policy management, threat prevention, and security architecture.
• Experience with VMware NSX Distributed Firewall, Cisco security technologies, or equivalent enterprise network security platforms.
• Strong understanding of enterprise security architecture, defence-in-depth principles, network segmentation, identity and access management, and secure systems design.
• Experience integrating firewall solutions into VMware private cloud, SDN, or hybrid cloud environments.
• Extensive experience with implementing security automation using Infrastructure as Code (IaC), Ansible, Terraform, Python, or similar technologies.
• Strong understanding of enterprise networking, routing, switching, VPNs, PKI, and enterprise cybersecurity practices.
• Experience operating within Agile, SAFe, or DevSecOps delivery frameworks.
• Strong leadership, communication, stakeholder engagement, and technical collaboration skills.
• Experience supporting defence, government, or highly regulated development environments.

Preferred Experience, Skills, and Education:

• Palo Alto Networks Certified Network Security Engineer (PCNSE) or equivalent certification.
• VMware NSX certification or equivalent SDN security certification.
• Experience supporting NATO environments and compliance frameworks.
• Experience with F5 Application Delivery Controllers (ADC) and Web Application Firewalls (WAF).
• Experience with Security Information and Event Management (SIEM), Security Orchestration, Automation and Response (SOAR), or enterprise security monitoring platforms.
• Familiarity with Python, REST APIs, and security automation technologies.
• Experience supporting large-scale infrastructure modernization and enterprise platform engineering initiatives.

If you’re looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We’re not hiring followers. We’re recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We’re already at step 30 - and moving faster than anyone else dares., Writing Planning Firewall Cannabis Cisco IOS Operations Management Innovation SolarWinds Multitasking Data Centers Cyber Security VMware VSphere VMware vCenter Version Control Problem Solving Physical Design Network Security Analytical Skills Change Management Behavioral Health Computer Networks F5 Load Balancers, Tooling Planning Auditing Teamwork Firewall Fortinet CyberArk Telemetry Hardening Operations Automation Resilience Communication Change Control Cyber Security Backup Devices Load Balancing Security Tools Network Routing Computer Science Network Security Security Controls Security Policies Knowledge Transfer Business Valuation Financial Services Workflow Management Root Cause Analysis Information Systems Network Engineering Security Technology GIAC Certifications Enterprise Security Computer Engineering Lifecycle Management Technical Leadership Remote Access Systems, Vulnerability Management Infrastructure as Code (IaC) Privileged Access Management Security Requirements Analysis Virtual Private Networks (VPN) Open Shortest Path First (OSPF) Endpoint Detection And Response GIAC Certified Incident Handler Secure Remote Password Protocols GIAC Certified Intrusion Analyst Troubleshooting (Problem Solving) Cisco Certified Network Associate Cisco Certified Network Professional Cisco Certified Security Professional Dynamic Host Configuration Protocol (DHCP) Cloud Access Security Broker Tools (CASBs) GIAC Security Essentials Certification (GSEC) Security Information And Event Management (SIEM) Certified Information Systems Security Professional Payment Card Industry (PCI) Data Security Standards +0

Pay and benefits are fundamental to any career decision. That’s why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits .

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com .