Senior Specialist, Full Stack Engineer

L3Harris Technologies
Washington, D.C.Full-timePosted Aug 25, 2026

About the role

About The Company

L3Harris Technologies is a global leader in defense and aerospace technology, committed to delivering innovative solutions that support national security and the safety of citizens worldwide. Our organization values high-performance talent, fostering an inclusive and engaging environment where employees are empowered to excel and grow professionally. With a culture rooted in integrity, dedication to community, and a relentless pursuit of excellence, L3Harris is dedicated to making a meaningful impact through cutting-edge technology and strategic innovation.

About The Role

We are seeking a highly skilled and motivated Senior Specialist, Full Stack Engineer to join our dynamic team in Washington, D.C. This role involves designing, developing, and maintaining complex software solutions that are critical to national security missions. As part of our team, you will work alongside top-tier security researchers and product engineers, tackling the most challenging cybersecurity problems in demanding environments. The position offers an opportunity to contribute to impactful projects that connect space, air, land, sea, and cyber domains, ensuring the safety and security of our nation.

Qualifications

The ideal candidate will possess a bachelor's degree with a minimum of six years of relevant experience, or a graduate degree with at least four years of experience. Alternatively, candidates with a minimum of ten years of related experience without a degree will also be considered. The candidate must be eligible to obtain and maintain a U.S. security clearance. Proven experience in full-stack development, strong problem-solving skills, and a deep understanding of secure coding practices are essential.

Responsibilities

Participate in all phases of the software development lifecycle, including requirements gathering, design, implementation, testing, deployment, and maintenance.

Collaborate with cross-functional, globally distributed Agile teams, engaging with product managers, stakeholders, and team members to ensure project success.

Diagnose, troubleshoot, and resolve software defects and performance issues across various layers of the technology stack.

Develop and execute comprehensive test plans, including unit, integration, and system testing, to ensure high-quality deliverables.

Design, develop, and maintain secure, scalable backend services, APIs, and user interfaces using modern technologies such as C# .NET, Python, and Angular.

Optimize database schemas, queries, and data migration processes within PostgreSQL environments.

Engage in continuous research and development to innovate new features and improve existing systems, aligning with industry standards and cybersecurity protocols.

Contribute to technical design discussions, code reviews, and the implementation of CI/CD pipelines to streamline development processes.

Prepare technical documentation and user manuals to facilitate system understanding and maintenance.

Maintain compliance with security standards and protocols, ensuring all software solutions are secure and resilient against threats.

Benefits

L3Harris offers a comprehensive benefits package designed to support the well-being and professional growth of our employees. Benefits include health and disability insurance, a 401(k) retirement plan with company matching, flexible spending accounts, employee assistance programs, educational assistance, parental leave, paid time off, and company-sponsored holidays. The specific benefits available may vary based on employment status, location, and other factors. We are committed to providing a work environment that promotes work-life balance and personal development.

Equal Opportunity

L3Harris Technologies is an equal opportunity employer committed to fostering an inclusive workplace. We do not discriminate against any applicant or employee based on race, color, religion, national origin, ethnicity, gender, gender identity, sexual orientation, age, veteran status, disability, or any other protected characteristic under applicable law. We uphold a drug-free workplace and conduct pre-employment background checks and substance abuse testing where permitted by law. We welcome applicants from diverse backgrounds and are dedicated to providing equal employment opportunities to all qualified candidates.

Responsibilities

  • Participate in all phases of the software development lifecycle, including requirements gathering, design, implementation, testing, deployment, and maintenance.
  • Collaborate with cross-functional, globally distributed Agile teams, engaging with product managers, stakeholders, and team members to ensure project success.
  • Diagnose, troubleshoot, and resolve software defects and performance issues across various layers of the technology stack.
  • Develop and execute comprehensive test plans, including unit, integration, and system testing, to ensure high-quality deliverables.
  • Design, develop, and maintain secure, scalable backend services, APIs, and user interfaces using modern technologies such as C# .NET, Python, and Angular.
  • Optimize database schemas, queries, and data migration processes within PostgreSQL environments.
  • Engage in continuous research and development to innovate new features and improve existing systems, aligning with industry standards and cybersecurity protocols.
  • Contribute to technical design discussions, code reviews, and the implementation of CI/CD pipelines to streamline development processes.

Qualifications

  • Bachelor's degree with a minimum of six years of relevant experience, or a graduate degree with at least four years of experience.
  • Minimum of ten years of related experience without a degree will also be considered.
  • Eligibility to obtain and maintain a U.S. security clearance.
  • Proven experience in full-stack development.
  • Strong problem-solving skills.
  • Deep understanding of secure coding practices.

Benefits

  • Health and disability insurance.
  • 401(k) retirement plan with company matching.
  • Flexible spending accounts.
  • Employee assistance programs.
  • Educational assistance.
  • Parental leave.
  • Paid time off.
  • Company-sponsored holidays.

Skills mentioned

C#PythonAngular.NETPostgreSQLDebuggingUnit TestingIntegration TestingCI/CDCybersecurity

About L3Harris Technologies

IT Services and IT Consulting2-10 employees