Network Security Engineer at ExxonMobil | Jobyssey

About us

For well over a century, ExxonMobil has been at the heart of creating and growing a modern world. We embrace the power and promise of technology, pushing the boundaries of what's possible. For billions around the world, lives are better and last longer because of the innovative problem solving and reliable energy we provide. And when it comes to developing industrial solutions to reduce carbon emissions, ExxonMobil is truly the leader.

We don't stop at "good enough." We are committed to doing what's right, even if it's difficult or unpopular. We hold ourselves to high standards, challenge what's possible and invest in innovation to meet society's critical needs.

Real change begins with bold questions, drive, and ambition. Here, your talent, determination and contributions shape how far you'll go and the impact you'll make along the way.

Our future success depends on exceptional people. We invest in developing talent through meaningful work, challenging assignments, mentorship, and experiences that help build the next generation of leaders.

Our Culture

We are uniquely ExxonMobil. Integrity, care, excellence, resilience and courage, these core values determine how we work every day. At ExxonMobil, our values aren't just words— they're how we show up, focused on delivering the right answer, the right way, every day.

ExxonMobil in Malaysia

In Malaysia, we host a global business and technology center in Kuala Lumpur that provides high-level information technology and engineering expertise to ExxonMobil’s Upstream, Product Solutions and Low Carbon Solutions businesses worldwide. In the upstream, we have interests in two Production Sharing Contracts with PETRONAS, while in the Product Solutions business, we supply a portfolio of specialty chemical products to the marketplace.

What role you will play in the 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

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

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

We are committed to providing benefits that are competitive and support the needs of our employees.

Application Process

Please be informed that only shortlisted candidates will be notified, and you can find out more about our hiring process here.

For more information about business solicitation and recruiting scams, please click here.

We thank you for your interest in ExxonMobil.

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Equal Opportunity Employer
ExxonMobil is an Equal Opportunity Employer. All qualified applicants will be duly considered for employment.

Voted Top 5 Graduates’ Choice of Employers in Malaysia for Oil and Gas category

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.

Network Security Engineer

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