[Skip to main content](#main-content) [OpenNash Jobs](https://jobs.opennash.com/) [Hiring report](/reports/hiring/) · [All L3Harris Technologies jobs](https://jobs.opennash.com/companies/l3harris-technologies/) · [Search jobs](/search/) L3Harris Technologies · Greenville, TX # Specialist, Information Security Systems Engineer Greenville, TX Security Listed on L3Harris Technologies’s official careers site. Listed as of October 19, 2026. Check that it is still open and apply there. [Apply on L3Harris Technologies’s careers site →](https://careers.l3harris.com/en/job/greenville/specialist-information-security-systems-engineer/4832/100994318544) [OpenNash Jobs](https://jobs.opennash.com/) / [L3Harris Technologies](https://jobs.opennash.com/companies/l3harris-technologies/) / Specialist, Information Security Systems Engineer ## 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 is the Trusted Disruptor in defense tech. 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, Information Security Systems Engineer Job Code: 44711 Job Location: Greenville, TX Schedule: 9/80 - Employees work 9 out of every 14 days – totaling 80 hours worked – and have every other Friday off Job Description: L3Harris is seeking a software engineer with a passion for cyber security. In this role, the selected candidate will design, develop, integrate, and maintain software applications that implement defensive cyber security capabilities. This includes supporting technologies and mechanisms such as multi-factor authentication, audit review, endpoint protection, encryption, vulnerability analysis, and security management. The candidate will work closely with software developers, systems engineers, and commercial product vendors to design and evaluate secure systems, networks, and database solutions. This role is responsible for integrating multiple cyber security methods into a cohesive system security architecture and environment, while supporting the policies and procedures required to monitor and maintain that environment. ### Essential Functions Design, develop, integrate, test, and maintain software applications that support defensive cyber security capabilities. Be able to install, configure, use, and troubleshoot industry standard tools and technologies such as Splunk, Elastic, Tenable, NetApp Ontap Storage, Windows Active Directory, Redhat Linux Enterprise Server & Workstation, OpenShift, Kubernetes. Proficient in a variety of scripting frameworks such as YAML, Java, Python, Ansible, Bash, SQL, PowerShell. Proficient in CI/CD tools such as GitLab Enterprise with excellent software configuration management skills. Collaborate with systems developers, software engineers, and commercial vendors in the evaluation and integration of secure products and technologies. Support the design and assessment of secure systems, networks, and database products. Integrate multiple cyber security controls into a unified and effective security architecture. ### Qualifications Active US Top Secret/SCI security clearance, with continuous evaluation within the last 5 years. Bachelor’s Degree and minimum 4 years of prior relevant experience. Graduate Degree and a minimum of 2 years of prior related experience. In lieu of a degree, a minimum of 8 years of prior related experience. Demonstrated experience Designing, developing, integrating, testing, and maintaining software applications that support defensive cyber security capabilities. ### Preferred Additional Skills Experience assessing security and privacy controls in embedded systems using NIST 800-53. Knowledge of ISR aircraft systems and subsystems. Prior leadership experience with Agile methodologies (e.g., Scrum Master, Product Owner). Experience with systems engineering standards and best practices. Password management (Keepass, Ansible vaults, Kubernetes secret storage), SAST/DAST, container scanning. C++ Tensorflow VmWare Cloud Foundation ETL Data pipelines IDS/IPS UAM Security+ Experience in Risk Management Framework (RMF) accreditation and authorization (A&A) processes to include RMF steps 1-4 (categorization, controls selection, control implementation, security assessment) and standard body of evidence (BoE) package development. #LI-AM2 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. ## At a glance - Posted by the employer: Not stated - First seen by OpenNash: Oct 12, 2026 - Last checked: Oct 19, 2026 - Listed for: 7 days - Location: Greenville, TX[Apply on L3Harris Technologies’s careers site →](https://careers.l3harris.com/en/job/greenville/specialist-information-security-systems-engineer/4832/100994318544) ## More jobs at L3Harris Technologies ### [(DoW SkillBridge), Security Support B (Security Officer)](https://jobs.opennash.com/companies/l3harris-technologies/jobs/f7341fdb807fed8c62dd/) Greenville, TX ### [Lead, Information Security Systems Engineer (ISSE)](https://jobs.opennash.com/companies/l3harris-technologies/jobs/3a04c4870ade01ead91f/) Greenville, TX ### [Security Support B (Security Officer)](https://jobs.opennash.com/companies/l3harris-technologies/jobs/1511c5c9feb4143bcedb/) Greenville, TX ### [Specialist, Cyber Intelligence](https://jobs.opennash.com/companies/l3harris-technologies/jobs/711ea875c314c42941a9/) Greenville, TX ## Similar jobs at other companies ### [Information Systems Security Officer](https://jobs.opennash.com/companies/lockheed-martin/jobs/2c587a7a2adee1e0799c/) Lockheed Martin · Littleton, CO ### [Cyber Security, Information Systems Security Officer (ISSO)](https://jobs.opennash.com/companies/bae-systems/jobs/428f553613b2e41ffdd5/) BAE Systems · Hudson, New Hampshire, United States ### [Cyber Security, Information Systems Security Officer (ISSO)](https://jobs.opennash.com/companies/bae-systems/jobs/7cbeb295716d696dadef/) BAE Systems · Merrimack, New Hampshire, United States ### [Information Systems Security Manager](https://jobs.opennash.com/companies/lockheed-martin/jobs/297993130eadfb830f6b/) Lockheed Martin · Grand Prairie, TX ### [Information Systems Security Officer (ISSO)](https://jobs.opennash.com/companies/general-dynamics/jobs/5905db3c9382a6494984/) General Dynamics · Pittsfield, MA, US [Security jobs](/functions/security/) OpenNash lists jobs from employers’ own careers sites and does not handle applications. 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