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Specialist, Info Sec Sys Engineer

L3Harris Technologies

Specialist, Info Sec Sys Engineer

full-timePosted: Jan 15, 2026

Job Description

L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers’ mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do.

L3Harris Technologies is the Trusted Disruptor in the defense industry. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.

Job Title:  Specialist, Info Sec Systems Engineer 

Job Code:  30071

Job Location:  Melbourne, FL

Job Schedule: 9/80

Job Description:

L3Harris is searching for talented and experienced Security Engineering professionals to join the Mission Networks Enterprise Security Team as a Level 3 Information Security Systems Engineer (ISSE). 

  • This position is ONSITE at L3Harris offices located in Melbourne, Florida
  • This role may require weekend, after-hours, or on-call rotations to meet program requirements and/or ongoing program support.
  • This position may require limited travel in an emergency
  • This position requires the ability to obtain FAA Public Trust Suitability

Essential Functions: 

  • Develop and enforce security policies, procedures, and measures in alignment with the program's cybersecurity strategies.
  • Design, implement, and manage security solutions, including but not limited to firewalls, intrusion detection systems, endpoint protection, and encryption tools.
  • Develop, maintain and publish technical documentation in accordance with L3Harris Systems Engineering processes.
  • Act as a Security Support Engineer for State, Federal and commercial customers.
  • Provide technical guidance and support to less experienced team members.
  • Stay abreast of the latest security trends, threats, and control technologies.
  • This position will require weekends, after hours, and on-call support to meet program requirements.

Qualifications:

  • A Bachelor’s degree in Computer Engineering, Computer Science, IT Security, or a related field with at least 4 years of relevant experience; or a Graduate degree in the same fields and a minimum of 2 years of relevant experience. In lieu of a degree, a minimum of 8 years of prior relevant experience
  • Strong understanding of system administration including Windows and Linux operating systems.
  • Strong knowledge of Cisco network infrastructure, including LAN/WAN, VPNs, routers, and switches.
  • Strong project engineering experience in security-related environments.
  • Excellent analytical and problem-solving skills.
  • Effective communication and interpersonal skills.
  • Experience with security frameworks (NIST SP800-53, NIST SP800-171, ISO 27001, or FISMA) and risk management methodologies.
  • The candidate must have the ability to obtain a FAA Public Trust, GSA clearance and Standard Public Trust.

Preferred Additional Skills:

  • Experience administering Next Generation Firewalls (NGFW) (Fortinet, Cisco, or Palo Alto).
  • Experience mitigating DDoS floods with on-premises and cloud-based solutions.
  • Experience deploying Intrusion Detection/Prevention System configurations and providing technical support.
  • Experience administering Security Information and Event Management (SIEM) infrastructure.
  • Data Loss Prevention systems configuration, deployment and technical support (Varonis and Manage Engine Audit Plus).
  • Experience with deployment and administration of Enterprise host intrusion and detections systems (Carbon Black or Sentinel One preferred)

L3Harris Technologies is proud to be an Equal Opportunity Employer. L3Harris is committed to treating all employees and applicants for employment with respect and dignity and maintaining a workplace that is free from unlawful discrimination. All applicants will be considered for employment without regard to race, color, religion, age, national origin, ancestry, ethnicity, gender (including pregnancy, childbirth, breastfeeding or other related medical conditions), gender identity, gender expression, sexual orientation, marital status, veteran status, disability, genetic information, citizenship status, characteristic or membership in any other group protected by federal, state or local laws. L3Harris maintains a drug-free workplace and performs pre-employment substance abuse testing and background checks, where permitted by law.

Please be aware many of our positions require the ability to obtain a security clearance. Security clearances may only be granted to U.S. citizens. In addition, applicants who accept a conditional offer of employment may be subject to government security investigation(s) and must meet eligibility requirements for access to classified information.

By submitting your resume for this position, you understand and agree that L3Harris Technologies may share your resume, as well as any other related personal information or documentation you provide, with its subsidiaries and affiliated companies for the purpose of considering you for other available positions.

L3Harris Technologies is an E-Verify Employer. Please click here for the E-Verify Poster in English or Spanish. For information regarding your Right To Work, please click here for English or Spanish.

Locations

  • Melbourne, FL, United States

Salary

Estimated Salary Rangemedium confidence

95,000 - 155,000 USD / yearly

Source: AI Estimation

* This is an estimated range based on market data and may vary based on experience and qualifications.

Skills Required

  • Strong understanding of system administration including Windows and Linux operating systemsintermediate
  • Strong knowledge of Cisco network infrastructure, including LAN/WAN, VPNs, routers, and switchesintermediate
  • Strong project engineering experience in security-related environmentsintermediate
  • Excellent analytical and problem-solving skillsintermediate
  • Effective communication and interpersonal skillsintermediate
  • Experience with security frameworks (NIST SP800-53, NIST SP800-171, ISO 27001, or FISMA) and risk management methodologiesintermediate
  • Experience administering Next Generation Firewalls (NGFW) (Fortinet, Cisco, or Palo Alto)intermediate
  • Experience mitigating DDoS floods with on-premises and cloud-based solutionsintermediate
  • Experience deploying Intrusion Detection/Prevention System configurations and providing technical supportintermediate
  • Experience administering Security Information and Event Management (SIEM) infrastructureintermediate
  • Data Loss Prevention systems configuration, deployment and technical support (Varonis and Manage Engine Audit Plus)intermediate
  • Experience with deployment and administration of Enterprise host intrusion and detections systems (Carbon Black or Sentinel One preferred)intermediate

Required Qualifications

  • A Bachelor’s degree in Computer Engineering, Computer Science, IT Security, or a related field with at least 4 years of relevant experience (experience)
  • or a Graduate degree in the same fields and a minimum of 2 years of relevant experience (experience)
  • In lieu of a degree, a minimum of 8 years of prior relevant experience (experience)
  • The candidate must have the ability to obtain a FAA Public Trust, GSA clearance and Standard Public Trust (experience)

Responsibilities

  • Develop and enforce security policies, procedures, and measures in alignment with the program's cybersecurity strategies
  • Design, implement, and manage security solutions, including but not limited to firewalls, intrusion detection systems, endpoint protection, and encryption tools
  • Develop, maintain and publish technical documentation in accordance with L3Harris Systems Engineering processes
  • Act as a Security Support Engineer for State, Federal and commercial customers
  • Provide technical guidance and support to less experienced team members
  • Stay abreast of the latest security trends, threats, and control technologies

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L3Harris Technologies logo

Specialist, Info Sec Sys Engineer

L3Harris Technologies

Specialist, Info Sec Sys Engineer

full-timePosted: Jan 15, 2026

Job Description

L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers’ mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do.

L3Harris Technologies is the Trusted Disruptor in the defense industry. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.

Job Title:  Specialist, Info Sec Systems Engineer 

Job Code:  30071

Job Location:  Melbourne, FL

Job Schedule: 9/80

Job Description:

L3Harris is searching for talented and experienced Security Engineering professionals to join the Mission Networks Enterprise Security Team as a Level 3 Information Security Systems Engineer (ISSE). 

  • This position is ONSITE at L3Harris offices located in Melbourne, Florida
  • This role may require weekend, after-hours, or on-call rotations to meet program requirements and/or ongoing program support.
  • This position may require limited travel in an emergency
  • This position requires the ability to obtain FAA Public Trust Suitability

Essential Functions: 

  • Develop and enforce security policies, procedures, and measures in alignment with the program's cybersecurity strategies.
  • Design, implement, and manage security solutions, including but not limited to firewalls, intrusion detection systems, endpoint protection, and encryption tools.
  • Develop, maintain and publish technical documentation in accordance with L3Harris Systems Engineering processes.
  • Act as a Security Support Engineer for State, Federal and commercial customers.
  • Provide technical guidance and support to less experienced team members.
  • Stay abreast of the latest security trends, threats, and control technologies.
  • This position will require weekends, after hours, and on-call support to meet program requirements.

Qualifications:

  • A Bachelor’s degree in Computer Engineering, Computer Science, IT Security, or a related field with at least 4 years of relevant experience; or a Graduate degree in the same fields and a minimum of 2 years of relevant experience. In lieu of a degree, a minimum of 8 years of prior relevant experience
  • Strong understanding of system administration including Windows and Linux operating systems.
  • Strong knowledge of Cisco network infrastructure, including LAN/WAN, VPNs, routers, and switches.
  • Strong project engineering experience in security-related environments.
  • Excellent analytical and problem-solving skills.
  • Effective communication and interpersonal skills.
  • Experience with security frameworks (NIST SP800-53, NIST SP800-171, ISO 27001, or FISMA) and risk management methodologies.
  • The candidate must have the ability to obtain a FAA Public Trust, GSA clearance and Standard Public Trust.

Preferred Additional Skills:

  • Experience administering Next Generation Firewalls (NGFW) (Fortinet, Cisco, or Palo Alto).
  • Experience mitigating DDoS floods with on-premises and cloud-based solutions.
  • Experience deploying Intrusion Detection/Prevention System configurations and providing technical support.
  • Experience administering Security Information and Event Management (SIEM) infrastructure.
  • Data Loss Prevention systems configuration, deployment and technical support (Varonis and Manage Engine Audit Plus).
  • Experience with deployment and administration of Enterprise host intrusion and detections systems (Carbon Black or Sentinel One preferred)

L3Harris Technologies is proud to be an Equal Opportunity Employer. L3Harris is committed to treating all employees and applicants for employment with respect and dignity and maintaining a workplace that is free from unlawful discrimination. All applicants will be considered for employment without regard to race, color, religion, age, national origin, ancestry, ethnicity, gender (including pregnancy, childbirth, breastfeeding or other related medical conditions), gender identity, gender expression, sexual orientation, marital status, veteran status, disability, genetic information, citizenship status, characteristic or membership in any other group protected by federal, state or local laws. L3Harris maintains a drug-free workplace and performs pre-employment substance abuse testing and background checks, where permitted by law.

Please be aware many of our positions require the ability to obtain a security clearance. Security clearances may only be granted to U.S. citizens. In addition, applicants who accept a conditional offer of employment may be subject to government security investigation(s) and must meet eligibility requirements for access to classified information.

By submitting your resume for this position, you understand and agree that L3Harris Technologies may share your resume, as well as any other related personal information or documentation you provide, with its subsidiaries and affiliated companies for the purpose of considering you for other available positions.

L3Harris Technologies is an E-Verify Employer. Please click here for the E-Verify Poster in English or Spanish. For information regarding your Right To Work, please click here for English or Spanish.

Locations

  • Melbourne, FL, United States

Salary

Estimated Salary Rangemedium confidence

95,000 - 155,000 USD / yearly

Source: AI Estimation

* This is an estimated range based on market data and may vary based on experience and qualifications.

Skills Required

  • Strong understanding of system administration including Windows and Linux operating systemsintermediate
  • Strong knowledge of Cisco network infrastructure, including LAN/WAN, VPNs, routers, and switchesintermediate
  • Strong project engineering experience in security-related environmentsintermediate
  • Excellent analytical and problem-solving skillsintermediate
  • Effective communication and interpersonal skillsintermediate
  • Experience with security frameworks (NIST SP800-53, NIST SP800-171, ISO 27001, or FISMA) and risk management methodologiesintermediate
  • Experience administering Next Generation Firewalls (NGFW) (Fortinet, Cisco, or Palo Alto)intermediate
  • Experience mitigating DDoS floods with on-premises and cloud-based solutionsintermediate
  • Experience deploying Intrusion Detection/Prevention System configurations and providing technical supportintermediate
  • Experience administering Security Information and Event Management (SIEM) infrastructureintermediate
  • Data Loss Prevention systems configuration, deployment and technical support (Varonis and Manage Engine Audit Plus)intermediate
  • Experience with deployment and administration of Enterprise host intrusion and detections systems (Carbon Black or Sentinel One preferred)intermediate

Required Qualifications

  • A Bachelor’s degree in Computer Engineering, Computer Science, IT Security, or a related field with at least 4 years of relevant experience (experience)
  • or a Graduate degree in the same fields and a minimum of 2 years of relevant experience (experience)
  • In lieu of a degree, a minimum of 8 years of prior relevant experience (experience)
  • The candidate must have the ability to obtain a FAA Public Trust, GSA clearance and Standard Public Trust (experience)

Responsibilities

  • Develop and enforce security policies, procedures, and measures in alignment with the program's cybersecurity strategies
  • Design, implement, and manage security solutions, including but not limited to firewalls, intrusion detection systems, endpoint protection, and encryption tools
  • Develop, maintain and publish technical documentation in accordance with L3Harris Systems Engineering processes
  • Act as a Security Support Engineer for State, Federal and commercial customers
  • Provide technical guidance and support to less experienced team members
  • Stay abreast of the latest security trends, threats, and control technologies

Target Your Resume for "Specialist, Info Sec Sys Engineer" , L3Harris Technologies

Get personalized recommendations to optimize your resume specifically for Specialist, Info Sec Sys Engineer. Takes only 15 seconds!

AI-powered keyword optimization
Skills matching & gap analysis
Experience alignment suggestions

Check Your ATS Score for "Specialist, Info Sec Sys Engineer" , L3Harris Technologies

Find out how well your resume matches this job's requirements. Get comprehensive analysis including ATS compatibility, keyword matching, skill gaps, and personalized recommendations.

ATS compatibility check
Keyword optimization analysis
Skill matching & gap identification
Format & readability score
Quiz Challenge

Answer 10 quick questions to check your fit for Specialist, Info Sec Sys Engineer @ L3Harris Technologies.

10 Questions
~2 Minutes
Instant Score

Related Books and Jobs

No related jobs found at the moment.