Remote Network & Computer Systems Engineer

Description

Position: Network & Computer Systems Engineer

Location: Remote

Terms: Full Time

Clearance: Ability to obtain a Public Trust Clearance

Travel: 0–10%

We’re a mission-driven IT services company and systems integrator supporting digital transformation and modernization for Federal government agencies. Since 2009, we’ve partnered with our customers to solve complex challenges through smart, practical innovation to deliver real outcomes where they matter most. Our teams are made up of industry-leading experts who are passionate about doing great work and making a difference. We don’t just develop solutions—we support efforts that strengthen communities and serve the public good.

RIVA’s culture is built on four core values:
Results, Innovation, Values, and Accountability. They guide how we work, how we collaborate, and how we measure success. Our employee-first approach is rooted in trust, ownership, and meaningful work. By investing in our people and fostering a flexible, supportive environment, you will have the opportunity to grow your skills, contribute ideas, and make an impact from day one—all while supporting missions that matter.

Program Overview

The Network and Computer Systems Administrator (Firewall Engineer) supports secure, reliable enterprise network and security operations for a Federal customer. The role helps sustain mission-critical connectivity and access across LAN, WAN, internet, wireless, firewall, network access control, load-balancing, endpoint management, and security-monitoring technologies. The position also contributes to continuous diagnostics and mitigation activities, vulnerability remediation, configuration compliance, and service continuity across the enterprise environment.

Position Overview

RIVA Solutions is seeking an experienced Network and Computer Systems Administrator (Firewall Engineer) to install, configure, operate, maintain, and troubleshoot enterprise network and security infrastructure. The ideal candidate brings hands-on expertise with Palo Alto Networks firewalls, Cisco Identity Services Engine, enterprise wireless technologies, F5 Networks load balancing, Splunk or comparable SIEM platforms, and endpoint-management tools. This role works closely with cybersecurity, infrastructure, application, and service-management teams to maintain secure access, resolve incidents, implement approved changes, and improve network performance and resilience.

Core Responsibilities

• Install, configure, administer, and maintain LAN, WAN, internet, wireless, and enterprise network-security infrastructure.
• Administer and support Palo Alto Networks firewalls, including security policies, rules, upgrades, configuration changes, and logging.
• Support Cisco Identity Services Engine (ISE) for network access control, authentication, authorization, and endpoint visibility.
• Configure and troubleshoot enterprise Wi-Fi networks, wireless controllers, access points, and wireless-security standards.
• Administer and support F5 Networks load balancers and related application-delivery services.
• Monitor network availability, capacity, performance, and security events; identify abnormal behavior and service degradation.
• Troubleshoot network outages, firewall issues, wireless connectivity problems, access-control failures, VPN issues, and performance problems.
• Review network and security logs using Splunk and other SIEM tools to support incident analysis and operational monitoring.
• Support Continuous Diagnostics and Mitigation (CDM) activities, including vulnerability remediation and configuration-compliance efforts.
• Support mobile-device and endpoint management using VMware Air Watch and Microsoft Intune.
• Perform network-device maintenance,…