Senior Network Security Engineer

NanoInfomatrix LLC; San Jose (CA); On-site; USD 89,544 - 130,872; Full time

Job summary

A technology services firm in San Jose, CA is seeking a Senior Network Security Engineer. This role involves designing and maintaining secure network infrastructures, managing Cisco Firepower, and utilizing vulnerability management tools. Ideal candidates will have 5+ years of experience in network security. This contract position offers an hourly rate of $65 – $95 based on experience.

Qualifications

• 5+ years of hands‑on experience in network security engineering.
• Strong expertise in Cisco Firepower NGFW, LAN/WAN/VPN technologies.
• Experience with SED and Proxy/Next-Gen Firewalls.

Responsibilities

• Design, implement, and maintain secure network infrastructure.
• Configure, manage, and troubleshoot Cisco Firepower Next-Generation Firewalls.
• Deploy and maintain F5 load balancers.

Skills

Cisco Firepower NGFW

LAN/WAN/VPN technologies

Proxy/Next-Gen Firewalls

F5 load balancing

SFTP configurations

Tenable or other vulnerability management tools

Troubleshooting and analytical skills

Communication and documentation abilities

Education

CCNP Security

F5 Certified

CISSP

CEH

Job description

Senior Network Security Engineer

Billing Rate: $65 – $95 per hour (1099/W2/C2C depending on experience)

Eligibility: Only U.S. Citizens or Green Card holders

Job Summary

Nano Infomatrix LLC is seeking an experienced Senior Network Security Engineer to build and support our customer infrastructure environment based in San Jose, CA. The ideal candidate will have hands‑on architect and setup expertise in network and security technologies, including Cisco Firepower NGFW, LAN/WAN/VPN, and F5 load balancing, as well as experience with proxy solutions, SFTP, and vulnerability management tools such as Tenable. Prior experience in manufacturing environments is a strong plus.

Key Responsibilities

• Design, implement, and maintain secure network infrastructure across LAN, WAN, and VPN environments.
• Configure, manage, and troubleshoot Cisco Firepower Next-Generation Firewalls (NGFW).
• Support proxy/Next-Gen firewall setups to enhance network security and performance.
• Deploy and maintain F5 load balancers to optimize traffic and ensure high availability.
• Manage and secure SFTP configurations for data transfers.
• Utilize Tenable for vulnerability assessment, monitoring, and remediation support.
• Ensure compliance with security policies, standards, and best practices.
• Collaborate with cross‑functional teams (network, systems, and security operations) to implement secure solutions.
• Document infrastructure configurations, processes, and operational procedures.

Required Skills & Experience

• 5+ years of hands‑on experience in network security engineering.
• Strong expertise in Cisco Firepower NGFW, LAN/WAN/VPN technologies.
• Experience with SED, Proxy/Next-Gen Firewalls, and F5 load balancing.
• Knowledge of SFTP configurations and management.
• Familiarity with Tenable or other vulnerability management tools.
• Excellent troubleshooting and analytical skills.
• Strong communication and documentation abilities.

Preferred Qualifications

• Experience working in manufacturing environments.
• Relevant certifications such as CCNP Security, F5 Certified, CISSP, or CEH.
• Ability to work independently in a hybrid/remote environment.

Seniority Level

Mid‑Senior level

Employment Type

Contract

Job Function

Information Technology

Industries

IT Services and IT Consulting

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