[Hiring] Senior Firewall Engineer @Symmetrio

Role Description

Symmetrio is recruiting a Senior Firewall Engineer to join the network security team of one of our large government customers. The Senior Firewall Engineer will support a primarily Juniper SRX edge/core firewall infrastructure that supports mission-critical applications and operations. This is a hands-on, day-to-day operations role.

• Configure the rules, build and fix the VPNs, and track down problems when something stops working.
• Work closely with the customer’s network engineers, security staff, and agency IT teams.
• Be self-directed, comfortable owning issues from start to finish, and able to explain technical problems clearly to people outside networking.

This is a remote position. Candidates must be comfortable working EST hours. Competitive compensation, health benefits, and 401k retirement plan. This is a full-time, W2 consultant role with Symmetrio. No C2C or third-party candidates.

Qualifications

• 5+ years of hands-on experience administering and troubleshooting Juniper SRX firewalls specifically (not only Juniper switches and routers) on Junos OS.
• Strong CLI skills, including building policies, zones, NAT, and VPNs from the command line, not just from a GUI.
• Proven IPsec/IKE/IKEv2 VPN troubleshooting experience.
• Solid understanding of routing, switching, and enterprise network fundamentals.
• Experience supporting large enterprise or multi-customer environments.
• Ability to work independently, with strong written and verbal communication.
• Willingness to complete a hands-on technical lab as part of the interview process.
• Ability to pass a background check.

Requirements

• Administer, configure, and maintain Juniper SRX firewalls, including edge and core devices, in a large multi-tenant enterprise environment.
• Create, modify, and review firewall rules and security policies in response to agency and project requests.
• Build, manage, and troubleshoot IPsec site-to-site and remote access VPNs (IKE/IKEv2).
• Diagnose and resolve connectivity and traffic-flow issues using CLI tools, session and flow analysis, logs, and packet-level troubleshooting.
• Perform planned changes, upgrades, and maintenance, with clear documentation and rollback plans.
• Respond to escalated and critical incidents affecting network availability or security.
• Work directly with agency IT teams and system owners to understand their requirements and implement secure, supportable rules.
• Coordinate with network engineering and cybersecurity teams so policy, architecture, and incident response stay aligned.
• Schedule changes around the operational needs of public safety and other critical services, and communicate impact to stakeholders in plain language.
• Document configurations, standards, and procedures so knowledge is shared across the team.
• Support Palo Alto firewalls as the City expands its use of that platform (training provided as needed).

Preferred Qualifications

• Experience with Palo Alto firewalls (customer is expanding its Palo Alto footprint).
• Experience with Juniper Security Director, Junos Space, or other centralized management platforms.
• Experience with high-end SRX platforms (such as the SRX4000/5000 series) in edge or data center deployments.
• Experience in government, municipal, or public safety environments.
• Juniper certifications (JNCIS-SEC, JNCIP-SEC, or higher).

Benefits

• Health Care Plan (Medical, Dental & Vision).
• Retirement Plan (401k).
• Paid Time Off (Vacation, Sick & Public Holidays).