Summary
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: Senior Specialist, Systems Engineering
Job Number: 41128
Job Location: Greenville, TX
Schedule: 5/8: Employees work 8 hours per day, 5 days a week. OR
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 Systems Engineering Senior Specialist – Mission Systems to join our Greenville, TX team. This position is responsible for Requirements, Development Support, and Integration of Operator Workstation capabilities multiple platforms and programs. Responsible for issue investigation and resolution. Responsible for submitting Bid and proposals. Responsible for documenting status and issues in Jira/Confluence.
Essential Functions:
- Systems or Software Engineering experience as a Subject Matter Expert working with Operator Interfaces.
- Demonstrated knowledge with ability to write capability/product requirement specifications.
- Will work with customer, system engineers and system architects to develop requirements.
- Will test and troubleshoot Operator Interfaces on various platforms and programs.
- Will engage with software developers to explain requirements and use cases when needed.
- CompTIA Security+ (current or able to obtain within within 12 months of start date).
Qualifications:
- Active Top Secret/SCI clearance required.
- Bachelor's Degree and minimum 6 years of prior systems/software engineering experience.
- Graduate Degree and a minimum 4 years of prior systems/software engineering experience.
- In lieu of a degree, minimum 10 years of prior systems/software engineering experience.
- Demonstrated experience engaging with internal/external stakeholders, up to and including customer and/or executives.
- Demonstrated experience working through an entire build cycle.
- Demonstrated understanding of systems engineering life cycle.
Preferred Additional Skills:
- Experience with IBM DOORS Requirements Management Tool.
- Experience with JIRA/Confluence and the Agile process.
- Hands-on experience with RC-135 Operator Interfaces.
- Current Security+ Certification.
#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.
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: Senior Specialist, Systems Engineering
Job Number: 41128
Job Location: Greenville, TX
Schedule: 5/8: Employees work 8 hours per day, 5 days a week. OR
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 Systems Engineering Senior Specialist – Mission Systems to join our Greenville, TX team. This position is responsible for Requirements, Development Support, and Integration of Operator Workstation capabilities multiple platforms and programs. Responsible for issue investigation and resolution. Responsible for submitting Bid and proposals. Responsible for documenting status and issues in Jira/Confluence.
Essential Functions:
- Systems or Software Engineering experience as a Subject Matter Expert working with Operator Interfaces.
- Demonstrated knowledge with ability to write capability/product requirement specifications.
- Will work with customer, system engineers and system architects to develop requirements.
- Will test and troubleshoot Operator Interfaces on various platforms and programs.
- Will engage with software developers to explain requirements and use cases when needed.
- CompTIA Security+ (current or able to obtain within within 12 months of start date).
Qualifications:
- Active Top Secret/SCI clearance required.
- Bachelor's Degree and minimum 6 years of prior systems/software engineering experience.
- Graduate Degree and a minimum 4 years of prior systems/software engineering experience.
- In lieu of a degree, minimum 10 years of prior systems/software engineering experience.
- Demonstrated experience engaging with internal/external stakeholders, up to and including customer and/or executives.
- Demonstrated experience working through an entire build cycle.
- Demonstrated understanding of systems engineering life cycle.
Preferred Additional Skills:
- Experience with IBM DOORS Requirements Management Tool.
- Experience with JIRA/Confluence and the Agile process.
- Hands-on experience with RC-135 Operator Interfaces.
- Current Security+ Certification.
#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.
Government Careers
Government jobs offer stability, competitive benefits, and the chance to make a meaningful impact on your community and country.
Whether you’re starting your career or seeking new opportunities, these roles provide pathways for growth, security, and service.
Explore positions across a wide range of fields and take the first step toward a rewarding future in public service.
MORE JOBS
-
AsstDir TIM Operations
- Plano, Texas
- NORTH TEXAS TOLLWAY AUTHORITY
- Oct 21, 2026
-
Public Safety Liaison Manager
- Plano, Texas
- NORTH TEXAS TOLLWAY AUTHORITY
- Oct 21, 2026
-
Maintenance Tech - Irrigation
- Plano, Texas
- NORTH TEXAS TOLLWAY AUTHORITY
- Oct 21, 2026
-
Police Lieutenant
- 250 W. First Street, Prosper, Texas
- TOWN OF PROSPER, TEXAS
- Oct 21, 2026
-
$50,747.86 - $71,522.29 Annually - 71522 Annually
Communications Officer
- Forney, Texas
- CITY OF FORNEY, TX
- Oct 21, 2026
-
$5825.00 - 6874.93 Monthly
TPWD - Archeologist II-III (Cultural Resources Coordinator)
- Tyler, Texas
- TEXAS PARKS AND WILDLIFE
- Oct 20, 2026