Network Security Engineer

ExxonMobil; Spring (TX); On-site; USD 90,000 - 150,000; Full time

Benefits offered by this job

Pension Plan

Savings Plan

Workplace Flexibility

Medical/Dental/Vision

Wellbeing Programs

Disability Plan

Job summary

ExxonMobil is seeking a Network Security Engineer to design, engineer, and manage the enterprise network security posture. You will protect the network infrastructure, apply DevOps to automate and scale security, and collaborate with global teams to support IT services.

The role requires hands-on security tech experience, strong networking fundamentals, and the ability to drive security across data centers, offices, and edge environments.

Qualifications

• Minimum 3 years of hands-on experience in network security.
• Experience with Cisco ASA, FTD, FortiGate, Juniper SRX platforms.
• Strong understanding of TCP/IP, OSI, routing/switching, ACLs.
• Familiar with firewalls, VPNs, IDS/IPS, encryption, authentication, vulnerability management, incident response.
• Bachelor’s degree or higher in CS/CE or IT-related fields.

Responsibilities

• Design, implement, and manage network security technologies across regions and environments.
• Research and recommend industry best practices and emerging technologies.
• Operate and maintain security appliances (Fortinet, Cisco, Juniper) including upgrades.
• Build and manage security infrastructure using DevOps and automation tools.
• Support security operations: monitoring, analysis, incident response, vulnerability management.
• Coordinate with Cybersecurity, Projects, and internal customers.
• Develop and maintain operational processes and documentation.

Skills

Network security

DevOps practices

Python/Automation

GitHub/CI-CD

TCP/IP fundamentals

Education

Bachelor's degree in CS/CE/IT

Tools

Cisco ASA (CSM)

FTD (FMC)

FortiGate (FortiManager)

Juniper SRX (Junos Space)

Job description

About Us

At ExxonMobil, our vision is to lead in energy innovations that advance modern living while reducing emissions. As one of the world’s largest publicly traded energy and chemical companies, we are powered by a unique and diverse workforce fueled by the pride in what we do and what we stand for.

The success of our Upstream, Product Solutions and Low Carbon Solutions businesses is the result of the talent, curiosity and drive of our people. They bring solutions every day to optimize our strategy in energy, chemicals, lubricants and lower-emissions technologies.

We invite you to bring your ideas to ExxonMobil to help create sustainable solutions that improve quality of life and meet society’s evolving needs. Learn more about our What and our Why and how we can work together.

What Role You Will Play In Our Team

As a Network Security Engineer, you will play a critical role in designing, engineering, and managing the enterprise network security posture. You will ensure that the network infrastructure aligns with corporate security policies and standards, protecting against evolving cyber threats. This role involves operating and maintaining key security technologies—such as firewalls, IDS/IPS, and other advanced controls—while applying DevOps principles to drive automation, scalability, and resilience. You will collaborate closely with network, infrastructure, application, and cybersecurity teams to support and enhance ExxonMobil’s global IT services.

What You Will Do

• 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 DevOps 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.

About You

Please refer to the qualifications section below which outlines the skills, experience, and qualifications required for this role.

Skills and Qualifications

• Minimum 3 years of hands‑on experience in network security.
• Experience with network security platforms: Cisco ASA (CSM), FTD (FMC), FortiGate (FortiManager), 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.

Technical Skills

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.

Automation & DevOps

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

Cloud

Experience with AWS and Azure network security services.

Preferred Qualifications / Experience

• 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.

Your Benefits

• Pension Plan: Enrollment is automatic and at no cost to you. The basic benefit is a monthly annuity to be paid to you in retirement for the rest of your life.
• Savings Plan: You can contribute between 6% and 20% of your pay and are encouraged to enroll right away. If you contribute at least 6% to your savings plan, the Company will contribute a 7% match.
• Workplace Flexibility: We have several programs such as "Flex your Day", providing ad‑hoc flexibility around when and where you work, as well as longer‑term programs such as leaves of absence and part‑time work.
• Comprehensive medical, dental, and vision plans.
• Culture of Health: Programs and resources to support your wellbeing.
• Employee Health Advisory Program: Provides confidential professional counseling for you and your family, including tools and resources promoting mental health and resiliency at no additional cost to you.
• Disability Plan: Income replacement for when you cannot work due to illness or injury occurring on or off the job. Enrollment is automatic and at no cost to you.

More information on our Company’s benefits can be found at www.exxonmobilfamily.com.

Please note benefits may be changed from time to time without notice, subject to applicable law.

EEO Statement

ExxonMobil 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. Nothing herein is intended to override the corporate separateness of local entities. Working relationships discussed herein do not necessarily represent a reporting connection, but may reflect a functional guidance, stewardship, or service relationship. Exxon Mobil Corporation has numerous affiliates, many with names that include ExxonMobil, Exxon, Esso and Mobil. For convenience and simplicity, those terms and terms like corporation, company, our, we and its are sometimes used as abbreviated references to specific affiliates or affiliate groups. Abbreviated references describing global or regional operational organizations and global or regional business lines are also sometimes used for convenience and simplicity. Similarly, ExxonMobil has business relationships with thousands of customers, suppliers, governments, and others. For convenience and simplicity, words like venture, joint venture, partnership, co‑venturer, and partner are used to indicate business relationships involving common activities and interests, and those words may not indicate precise legal relationships.