Network Security Engineer

TEKsystems; United States; Hybrid; USD 103,000 - 131,000; Full time

Benefits offered by this job

Medical, dental & vision

401(k) Retirement Plan

Life Insurance (Voluntary)

Short/Long-term disability

PTO

Job summary

TEKsystems is seeking a Contract Network Security Engineer in Foster City, CA, to operate and enhance enterprise security in a hybrid environment. You will manage next‑gen firewalls, IDS/IPS tuning, and 802.1X/NAC expansions, while supporting remote access VPN and change management processes.

You will contribute to runbooks, network diagrams, and documentation, participate in on‑call rotations, and deliver scoped security projects within defined timelines.

Qualifications

• 5+ years of network security engineering in production environments.
• 5+ years of IT systems or application engineering/administration.
• Solid knowledge of OSI layers 1–7.
• Hands-on with Layer-7 protection: TLS inspection, URL filtering, IDS/IPS.
• Experience with enterprise NGFW/UTM platforms (Palo Alto, Fortinet).
• Experience with 802.1X NAC (e.g., Aruba ClearPass).
• Experience with remote access VPN solutions.
• Familiar with change management processes.
• Clear written and verbal communication across Security, IT, Product, Ops.
• Security certifications such as PCNSE, Security+, CISSP.

Responsibilities

• Operate and enhance enterprise network security services in a hybrid environment.
• Administer NGFW/UTM platforms: policy changes, updates, maintenance, renewals.
• Manage URL filtering and Layer-7 policies; adjust categories as needed.
• Tune IDS/IPS signatures, reduce false positives, escalate detections.
• Support 802.1X NAC day-to-day operations and onboarding of devices.
• Support remote access VPN: troubleshooting, policy changes, monitoring.
• Process tickets within SLAs and provide status updates to requesters.
• Create/change runbooks, diagrams, and documentation for supported systems.
• Participate in on-call/escalation rotations for incidents.
• Lead phased 802.1X rollout and network segmentation initiatives.
• Deliver project work per statements of work with acceptance criteria.

Skills

Network security engineering

OSI model knowledge

Strong communication

Change management

Security certifications (PCNSE/S+, CIS

Tools

Palo Alto

Fortinet

Aruba ClearPass

AWS security

Python

Ansible

Terraform

Job description

Job Description

This contract Network Security Engineer role focuses on operating and enhancing enterprise network security services in a hybrid environment. You will administer next-generation firewalls, network access control, and remote access VPNs, while contributing to strategic projects such as 802.1X expansion and network segmentation. The position combines day-to-day operational support with scoped project work in a regulated or safety-critical setting.

Responsibilities

• Administer and maintain next-generation firewall and unified threat management platforms, including policy changes, rule lifecycle management and cleanup, signature and software updates, and license and certificate renewals.
• Operate URL filtering and Layer-7 inspection policies, including category tuning and exception handling to ensure appropriate access and protection.
• Administer IDS/IPS platforms by tuning signatures, reducing false positives, and escalating confirmed detections to the security operations team.
• Support 802.1X network access control on a day-to-day basis, including supplicant and authentication troubleshooting, resolving certificate and policy issues, and onboarding new device types.
• Support enterprise remote access VPN services, including client troubleshooting, split-tunnel and access policy changes, and capacity and availability monitoring.
• Work assigned tickets in the queue within agreed service-level agreements, providing clear and timely written updates to requesters.
• Author and submit change requests with complete test plans and rollback steps, following formal change management processes.
• Create and maintain runbooks, network diagrams, and configuration documentation for all supported systems to ensure consistent operations and knowledge sharing.
• Participate in an on-call or escalation rotation as agreed, providing support for critical incidents and after-hours issues.
• Design, pilot, and execute phased rollout of 802.1X expansion to additional sites and device classes, including creation of handoff documentation.
• Contribute to network segmentation and SSL decryption enforcement initiatives, including policy design and enforcement activities.
• Deliver scoped project work defined by written statements of work, meeting documented acceptance criteria and target completion dates.

Essential Skills

• 5+ years of network security engineering experience supporting production environments.
• 5+ years of IT systems or application engineering and administration experience.
• Strong working knowledge of all layers of the OSI model.
• Hands-on experience with Layer-7 protection techniques, including application control, TLS inspection, intrusion prevention systems, URL filtering, and DNS filtering.
• Direct experience administering enterprise next-generation firewall and unified threat management platforms, including vendors such as Palo Alto and Fortinet.
• Experience implementing and supporting 802.1X wired and wireless network access control, including platforms such as Aruba ClearPass.
• Experience with enterprise remote access VPN solutions.
• Demonstrated experience operating within a formal change management process.
• Clear written and verbal communication skills, with the ability to work effectively across Information Security, IT, Product, and Operations teams.
• Relevant security certifications such as PCNSE, Security+, or CISSP.
• Scripting or automation experience for configuration and reporting using tools such as Python, Ansible, or Terraform.
• Experience working in a regulated or safety-critical environment.
• Experience with cloud and AWS security concepts and tools.

Additional Skills and Qualifications

• Experience with Palo Alto and Fortinet next-generation firewalls.
• Experience with Aruba and ClearPass for network access control.
• Familiarity with AWS security services and controls.
• Hands-on experience with Security+ certification topics and Terraform-based infrastructure automation.
• Ability to document runbooks, network diagrams, and configuration standards in a clear and maintainable way.
• Comfort working in hybrid teams and collaborating with multiple technical and non-technical stakeholders.
• Strong problem-solving skills and a methodical approach to troubleshooting complex network security issues.

Work Environment

This is a hybrid role based in Foster City, California, with an expectation to work onsite three days per week. You will operate in an enterprise environment that leverages next-generation firewalls, IDS/IPS, 802.1X network access control, remote access VPN, and cloud security tools, including AWS. The work includes a mix of ticket-based operational support, participation in an on-call or escalation rotation, and structured project work with defined statements of work and acceptance criteria. You will work within a formal change management framework, using detailed documentation, runbooks, and network diagrams to support reliable operations in a regulated or safety-critical setting.

Job Type & Location

This is a Contract position based out of Foster City, CA.

Pay and Benefits

The pay range for this position is $75.00 - $95.00/hr.

Individual compensation offered for this position within this range will depend on many factors, including qualifications, skills, relevant experience, job knowledge, geographic location, internal equity, and other pertinent job-related factors.

Eligibility requirements apply to some benefits and may depend on your jobclassification and length of employment. Benefits are subject to change and may besubject to specific elections, plan, or program terms. If eligible, the benefitsavailable for this temporary role may include the following:Medical, dental & visionCritical Illness, Accident, and Hospital401(k) Retirement Plan Pre-tax and Roth post-tax contributions availableLife Insurance (Voluntary Life & AD&D for the employee and dependents)Short and long-term disabilityHealth Spending Account (HSA)Transportation benefitsEmployee Assistance ProgramTime Off/Leave (PTO, Vacation or Sick Leave)

Job Type & Location

This is a Contract position based out of Foster City, CA.

Application Deadline

This position is anticipated to close on Nov 5, 2026.

Workplace Type

This is a hybrid position in Foster City,CA.

About TEKsystems

We're partners in transformation. We help clients activate ideas and solutions to take advantage of a new world of opportunity. We are a team of 80,000 strong, working with over 6,000 clients, including 80% of the Fortune 500, across North America, Europe and Asia. As an industry leader in Full-Stack Technology Services, Talent Services, and real-world application, we work with progressive leaders to drive change. That's the power of true partnership. TEKsystems is an Allegis Group company.

The company is an equal opportunity employer and will consider all applications without regards to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

About TEKsystems and TEKsystems Global Services

Were a leading provider of business and technology services. We accelerate business transformation for our customers. Our expertise in strategy, design, execution and operations unlocks business value through a range of solutions. Were a team of 80,000 strong, working with over 6,000 customers, including 80% of the Fortune 500 across North America, Europe and Asia, who partner with us for our scale, full-stack capabilities and speed. Were strategic thinkers, hands-on collaborators, helping customers capitalize on change and master the momentum of technology. Were building tomorrow by delivering business outcomes and making positive impacts in our global communities. TEKsystems and TEKsystems Global Services are Allegis Group companies. Learn more at TEKsystems.com.

The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

San Francisco Fair Chance Ordinance: Pursuant to the San Francisco Fair Chance Ordinance, for all positions located in the city and county of San Francisco, we will consider for employment qualified applicants with arrest and conviction records.

Massachusetts Lie Detector: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

Use of Artificial Intelligence (AI): We may use Artificial Intelligence (AI) to support parts of our hiring process, including sourcing, screening, and evaluating candidates. AI helps assess applications and qualifications, but final decisions are made by our hiring team. By applying, you acknowledge and agree that your application may be reviewed using AI tools.