Security-Cleared Senior Full-Stack Engineer (Defense Tech)

Jobtome; Elizabeth (NJ); On-site; USD 97,000 - 180,000; Full time

Job summary

L3Harris is seeking a Senior Specialist, Software Engineering (Full Stack) to lead design and delivery of secure, scalable mission software. You will work across backend services, APIs, and web interfaces using Java, Python, TypeScript, and JavaScript, supporting MOSSAIC APE programs and sensor integration.

Qualifications include a Bachelor’s degree and 6+ years of experience with an active Secret clearance.

Qualifications

• Bachelor's Degree and minimum 6 years of related experience; higher degree acceptable.
• Active Secret Security Clearance required.

Responsibilities

• Lead technical design and implementation of full-stack software capabilities, including backend services, APIs, and web UIs.
• Design scalable software using Java, Python, TypeScript, and JavaScript for SOA and microservices.
• Define secure integration patterns, service contracts, and data exchanges across distributed systems.
• Guide code reviews, testing, documentation, and secure-development practices.
• Resolve complex software and integration issues across environments.
• Provide technical guidance and mentorship to software engineers.
• Coordinate dependencies with partner teams and contribute to delivery planning.
• Travel up to 15% as needed to support program and customer requirements.

Skills

Java

Python

TypeScript

JavaScript

Security Clearance

Education

Bachelor's Degree

Tools

Kubernetes

Docker

Kafka

RabbitMQ

Job description

L3Harris is seeking a Senior Specialist, Software Engineering (Full Stack) to lead design and delivery of secure, scalable mission software. You will work across backend services, APIs, and web interfaces using Java, Python, TypeScript, and JavaScript, supporting MOSSAIC APE programs and sensor integration.

Qualifications include a Bachelor’s degree and 6+ years of experience with an active Secret clearance.