Mid Level Senior Network Security Engineer Jobs
Mid level senior network security engineer jobs go to engineers ready to own security projects end to end, mentor junior colleagues, and drive technical decisions with limited oversight. Openings are distributed across on-site, remote, and hybrid settings within Technology & Software, Energy, and Education, with employers like Collabera, HP, and Deloitte hiring at this level now.
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Showing 5 of 20+ Mid Level Senior Network Security Engineer jobs
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
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
An ExxonMobil career is one designed to last. Our commitment to you runs deep: our employees grow personally and professionally, with benefits built on our core categories of health, security, finance, and life.
We offer you:
- 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.
Stay connected with us
Learn more at our website
Follow us on LinkedIN and Instagram
Like us on Facebook
Subscribe our channel at YouTube
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.
Job ID: 94852
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
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
An ExxonMobil career is one designed to last. Our commitment to you runs deep: our employees grow personally and professionally, with benefits built on our core categories of health, security, finance, and life.
We offer you:
- 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.
Stay connected with us
Learn more at our website
Follow us on LinkedIN and Instagram
Like us on Facebook
Subscribe our channel at YouTube
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.
Job ID: 94852
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Mid Level Senior Network Security Engineer Jobs: Frequently Asked Questions
How do I get a mid level senior network security engineer job?
Position your existing experience around ownership, not just task completion. Highlight projects where you led the technical direction, reduced risk, or improved security posture measurably. Certifications like CISSP, CEH, or Security+ strengthen your application, but concrete examples of firewall architecture, incident response, or zero-trust implementations carry more weight than credentials alone. Tailor each application to the specific threat landscape the employer faces.
Which companies hire mid level senior network security engineers?
Companies hiring mid level senior network security engineers right now include Collabera, HP, and Deloitte, based on current listings on Migrate Mate as of August 2026. Hiring at this level comes from a mix of enterprise technology firms, financial institutions, healthcare organizations, and government contractors that need engineers who can operate with real autonomy on complex security infrastructure.
Are there remote mid level senior network security engineer jobs?
Yes, though availability varies by employer and security clearance requirements. About 14% of mid level senior network security engineer openings are remote or hybrid as of August 2026, reflecting strong demand for distributed security talent. Roles involving classified systems or on-premises infrastructure tend to require on-site presence, while cloud security, SOC analyst, and consulting-adjacent positions are more likely to offer flexibility.
How do I move up to a mid level senior network security engineer role?
Progression into mid level typically comes from deepening a specialization, such as cloud security, penetration testing, or network architecture, and taking on projects with broader scope and less supervision over time. Building a record of identifying vulnerabilities, leading remediation efforts, and communicating risk clearly to stakeholders signals readiness. Earning a recognized certification and contributing to team-level decisions accelerates the move from executing tasks to owning outcomes.
Which industries hire the most mid level senior network security engineers?
Mid Level senior network security engineer roles concentrate in Technology & Software, Energy, and Education, based on current listings on Migrate Mate as of August 2026. These sectors drive hiring at this level because they manage high-value data, face significant regulatory requirements, and operate infrastructure complex enough to require engineers who can work independently on security design and incident response.