Senior Web Applications Firewall Engineer

Leidos Holdings Inc. Saint Louis , MO 63150

Posted 2 months ago


Job Description:

Looking for an opportunity to make an impact?

Leidos is a FORTUNE 500 company bringing a mix of innovative technology and sector expertise to customers in the national security, engineering, and the health industries. At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers' success.

We empower our teams, contribute to our communities, and operate sustainable. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business.

Your greatest work is ahead!

Leidos Defense Group is looking for a Senior Web Application Firewall Security Engineer to work on the United States Transportation Command (USTRANSCOM) Cyberspaces Operations Forces' (COF) program located at Scott Air Force Base, Illinois. The COF mission is to provide Department of Defense Information Network (DODIN) Operations, defensive cyber operations-internal defensive measures, and overall cyberspace operations in support of USTRANSCOM network systems and missions.

The candidate will work closely with network service providers to install, configure, and service network-enabled devices and associated software. Other related infrastructure support activities are focused on system design sustainment support for the Government-furnished cybersecurity defense tool suites. This includes monitoring, installation, modification, testing and servicing of network devices as coordinated with service providers along with coordinating scheduled outages with service providers and customers.

If this sounds like the kind of environment where you can thrive, keep reading!

Leidos Defense Group provides a diverse portfolio of systems, solutions, and services covering land, sea, air, space, and cyberspace for customers worldwide. Solutions for Defense include enterprise and mission IT, large-scale intelligence systems, command and control, geospatial and data analytics, cybersecurity, logistics, training, and intelligence analysis and operations support.

Our team is solving the world's toughest security challenges for customers with "can't fail" missions.

To explore and learn more, click here!

Are you ready to make an impact? Begin your journey of a flourishing and meaningful career, share your resume with us today!

Responsibilities Include:

  • Provide risk-based recommendations to the Government related to change requests for cybersecurity defense configurations (e.g., firewall rules, proxy service exceptions, WAF rules).

  • Perform quarterly reviews of implemented cybersecurity defense filtering rules, exceptions, and log availability and content.

  • Maintain WAF compliance with Government requirements.

  • Develop/maintain WAF rule sets to ensure secure USTRANSCOM Command and Control communications and minimize impact to host applications.

Basic Qualifications:

  • BS degree with 7+ years of prior relevant experience, a Masters with 5+ years, or 8+ years of experience in lieu of degree

  • Active Secret clearance

  • DoD 8570 Compliant certifications to include IAT-II at start, and willing to earn CSSP-A and CSSP-IR. 6-month waiver to be granted in lieu of current CSSP certifications.

Preferred Qualifications:

  • Experience with any of the following tools: F5 BIG-IP Application Security Manager (ASM) policy development / administration and Palo Alto

Clearance Required:

  • Requires an active Secret security clearance


External Referral Eligible

Pay Range:

Pay Range $66,300.00 - $102,000.00 - $137,700.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

About Leidos

Leidos is a Fortune 500 technology, engineering, and science solutions and services leader working to solve the world's toughest challenges in the defense, intelligence, civil, and health markets. The company's 44,000 employees support vital missions for government and commercial customers.

Headquartered in Reston, Virginia, Leidos reported annual revenues of approximately $13.7 billion for the fiscal year ended December 31, 2021. For more information, visit

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers.

Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available here.

Securing Your Data

Beware of fake employment opportunities using Leidos' name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the automated system - never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at [email protected].

If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.

Commitment to Diversity

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

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Senior Web Applications Firewall Engineer

Leidos Holdings Inc.