Senior Network Security Engineer

Optum is a global organization that delivers care, aided by technology, to help millions of people live healthier lives. The work you do with our team will directly improve health outcomes by connecting people with care, pharmacy benefits, data, and resources they need to feel their best. Here, you will find a culture guided by diversity and inclusion, talented peers, comprehensive benefits, and career development opportunities.

Come makes an impact on the communities we serve as you help us advance health equity on a global scale. Join us to start Caring. Connecting. Growing together.

The Senior Information Security Engineer plays a critical role in protecting enterprise network infrastructure by designing, implementing, and operating Palo Alto Networks firewall solutions. This position supports regulatory compliance, incident response, and continuous security improvement while partnering closely with cross‑functional teams during high‑severity incidents and acquired‑entity integrations. The role leverages automation and AI‑assisted tools to improve operational efficiency, enhance monitoring capabilities, and ensure a resilient and scalable security posture aligned with business growth.

• Design, implement, and manage Palo Alto Networks firewall solutions to protect enterprise network environments.
• Configure and maintain firewall policies, threat prevention profiles, and security controls in alignment with organizational standards and compliance requirements.
• Lead acquired entity security integration initiatives, focusing on the seamless onboarding of new environments into the enterprise network and security architecture.
• Manage end to end Palo Alto Networks security integrations for acquired entities, from initial discovery and gap assessment through design, implementation, and steady state operations.
• Communicate clearly and effectively during high pressure situations to identify root causes, assess impact, and drive timely resolution.
• Perform detailed analysis of firewall logs, traffic flows, and alerts to support investigations and operational diagnostics.
• Leverage AI assisted with tools such as Git Hub Copilot and Microsoft Copilot to increase development speed, accuracy, and overall productivity. Contribute to documentation, knowledge sharing, and operational runbooks to support consistent and repeatable security operations.
• Follow established change management, incident handling, and security processes while continuously enhancing technical expertise in network security technologies.

You’ll be rewarded and recognized for your performance in an environment that will challenge you and give you clear direction on what it takes to succeed in your role as well as provide development for other roles you may be interested in.

• Bachelor's degree in information security, Computer Science, OR 4 years of network security engineering experience
• 8+ years of experience in information security, network security, or cloud security roles.
• 3+ years of experience with Palo Alto Networks firewalls;
• 5+ years of strong working knowledge of network security concepts, policies, compliance, including firewalls, proxies, secure access, and policy risk enforcement.
• 8+ years of strong background in security operations, incident management, and root cause analysis.
• Ability to support call rotations, after hours support and respond to high severity security incidents when required.

• Master's degree or relevant security certifications (e.g., CISSP, CISM, PCNSE, CCSP).
• Experience with Zero Trust architecture and cloud first security platforms.
• Experience working security operations across multiple regions or markets.
• Familiarity with vendor management, capacity planning, or service optimization.
• Experience with automation, scripting, and API based integrations.
• PCNSE certification is strongly preferred.

* All Telecommuters will be required to adhere to United Health Group's Telecommuter Policy.

Pay is based on several factors including but not limited to local labor markets, education, work experience, certifications, etc. In addition to your salary, we offer benefits such as…