Network Security Engineer

Overview

Exxon Mobil seeks a Network Security Engineer to design, engineer, and manage the enterprise network security posture. You will ensure the network infrastructure aligns with corporate security policies and standards, protecting against evolving cyber threats. The role involves operating and maintaining key security technologies—such as firewalls, IDS/IPS, and other advanced controls—while applying Dev Ops principles to drive automation, scalability, and resilience.

You will collaborate closely with network, infrastructure, application, and cybersecurity teams to support Exxon Mobil’s global IT services.

• Design, implement, and manage network security technologies and services across regions and different infrastructure environments (data centers, offices, edge).
• Research and recommend industry best practices and emerging technologies in network security.
• Operate and maintain network security appliances (Fortinet, Cisco, Juniper), including upgrades and patching.
• Build and manage network security infrastructure using Dev Ops practices and automation tools.
• Contribute to the Zero-Ops infrastructure management vision by developing solutions that reduce manual intervention and improve operational efficiency.
• Support security operations: monitoring, analysis, incident response, and vulnerability management.
• Evaluate security advisories and vulnerabilities, providing timely recommendations and mitigations.
• Participate in ad-hoc vulnerability assessments and incident response.
• Coordinate with stakeholders across Cybersecurity, Projects, and internal customers.
• Develop and maintain operational processes and documentation for ongoing support.

• Minimum 3 years of hands-on experience in network security.
• Experience with network security platforms:
  Cisco ASA (CSM), FTD (FMC), Forti Gate (Forti Manager), Juniper SRX (Junos Space).
• Strong understanding of networking fundamentals: TCP/IP, OSI model, routing/switching, ACLs.
• Familiarity with security technologies: firewalls, VPNs, IDS/IPS, encryption, authentication, vulnerability management, and incident response.
• Bachelor’s degree or higher in Computer Science, Computer Engineering, or IT-related fields.

Deep knowledge of TCP/IP, Internet technologies, IPS/IDS, firewall virtualization, VPNs, NAT, DNS, etc. Relevant certifications (preferred but not required):
Cisco (CCNA/CCNP Security), Fortinet (FCA/FCSS/NSE), CISSP, GIAC.

Strong advantage: experience with Git Hub, Terraform, Ansible, Python, REST API, Jenkins, Jinja2, YAML. Familiarity with CI/CD concepts and tools is a plus.

Experience with AWS and Azure network security services.

• Excellent verbal and written communication in English.
• Mindset to grow and learn.
• Self-motivated, proactive, and able to work independently in a global virtual team.
• Strong multitasking and prioritization abilities.
• Analytical mindset and a collaborative team player.

• Pension Plan:
  Enrollment is automatic with a lifetime retirement annuity.
• Savings Plan:
  Employee contributions between 6% and 20%;
  Company match on at least 6% contributed.
• Workplace Flexibility:
  Programs such as flexible work options and leaves of absence.
• Comprehensive medical, dental, and vision plans.
• Wellbeing programs and confidential counseling resources.
• Disability Plan:
  Automatic, no-cost coverage for income replacement.

Exxon Mobil is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, age, sexual orientation, gender identity, national origin, citizenship status, protected veteran status, genetic information, or physical or mental disability.