Principal Information Security Engineer- Manager

Job#: 2086603

Job Description:

Location: Remote

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The Role

We are seeking a Principal Information Security Engineer to support high-value public- and private-sector customers. You will be primarily responsible for deploying, configuring, and securing network security gear, with a strong emphasis on optical fiber installation, testing, and maintenance. You will focus on hands-on implementation, troubleshooting, and support in complex environments, while collaborating with internal teams and customers to ensure resilient and secure solutions.

What Youll Do

• Deploy, configure, and maintain routers, switches, firewalls, and VPNs across data center and field environments.
• Install, terminate, and test optical fiber (single-mode and multi-mode), and end-to-end troubleshooting.
• Serve as a trusted technical contact for customers, vendors, and peers during deployments and escalations.
• Produce clear, reusable technical documentation including network diagrams, Methods of Procedure (MoPs), and runbooks.
• Identify risks during deployment and ensure adherence to compliance and government security standards.
• Collaborate with cross-functional teams to integrate security into network design and deployments.
• Travel domestically as required to support surveys, installations, and cutovers.
• Perform advanced troubleshooting of network security issues and escalations to restore service quickly and prevent recurrence.
• Define and execute repeatable lab and field test procedures; help standardize deployment patterns and acceptance criteria.
• Coordinate activities with vendors, internal teams, and customer stakeholders to meet scope, schedule, and quality objectives.
• Contribute to peer knowledge transfer and the documentation of best practices and lessons learned.

Who You Are

You are a hands-on engineer who thrives in complex, mission-critical environments. You communicate with clarity, drive accountability through partnership, and can translate strategy into executable tasks in the field. You bring a bias for action, meticulous documentation habits, and the ability to apply structure to ambiguity while engaging stakeholders professionally.

Minimum Qualifications

• Active TS/SCI clearance with CI polygraph.
• 8+ years of progressively responsible experience in network engineering or security operations.
• Strong hands-on expertise with optical fiber (testing and troubleshooting across single-mode and multi-mode).
• Proven experience with routed and switched networks: TCP/IP, Ethernet, VLANs, IPsec, VPNs, and firewalls.
• Familiarity with automation/configuration tools (e.g., Ansible).
• Background in system, network, or security administration (Unix/Linux preferred).
• Excellent written and verbal communication skills; proven stakeholder engagement with customers and vendors.

Preferred Qualifications

• Experience with SD-WAN platforms (e.g., Fortinet, Juniper, Viptela, Aruba) and load balancers (F5, Citrix).
• Familiarity with NIST standards, DISA STIGs, TIC 3.0, and Zero Trust architectures.
• Demonstrated contributions to standards, documentation, and technical training in large-scale environments.

Success in This Role

• 30 days: Complete onboarding, assume responsibility for assigned environments, and deliver an initial deployment assessment.
• 60 days: Independently execute deployments, including optical fiber testing and documentation.
• 90 days: Lead deployments end-to-end and produce hardened design recommendations aligned to compliance requirements.

Additional Details

• Work Model: Remote; domestic travel as required for site surveys, installation, testing, and cutovers.
• Documentation & Quality: Create and maintain MoPs, runbooks, test plans, and as-built diagrams; contribute to continuous improvement of deployment standards.
• Compliance: Ensure risk mitigation and compliance in all deployments; raise and track issues to closure in collaboration with stakeholders.

EEO Employer

Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Employee Services Department at or .

Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRated's Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico.

Apex Benefits Overview: Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our 'Welcome Packet' as well, which an Apex team member can provide.