Security-Cleared Full-Stack Engineer: Mission Systems

Jobtome; Florissant (MO); On-site; USD 97,000 - 180,000; Full time

Benefits offered by this job

Health insurance

Disability insurance

401(k) match

Flexible spending accounts

Education assistance

Parental leave

Paid time off

Company-paid holidays

Job summary

L3Harris Technologies is seeking a Senior Specialist, Software Engineering (Full Stack) to lead design and delivery of secure, scalable mission applications. You will work across backend services, APIs, and front-end interfaces using Java, Python, TypeScript, and JavaScript, supporting sensor integration and C2 workflows.

Your role requires guiding engineering teams, applying secure-development practices, and coordinating with partner teams.

Qualifications

• Bachelor's Degree and minimum 6 years of prior relevant experience.
• Graduate Degree and a minimum of 4 years of prior related experience.
• In lieu of a degree, minimum of 10 years of prior related experience.
• Active Secret Security Clearance.

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 DEV, test, and deployment environments.
• Provide technical guidance and mentorship to software engineers.
• Coordinate technical dependencies with partner teams and contribute to delivery planning.
• Travel up to 15% as needed.

Skills

Java

Python

TypeScript

JavaScript

Full-stack

Education

Bachelor's Degree

Graduate Degree

Experience in lieu of degree

Tools

Kubernetes

GTK/Qt

Apache Kafka

RabbitMQ

ZeroMQ

NATS

Job description

L3Harris Technologies is seeking a Senior Specialist, Software Engineering (Full Stack) to lead design and delivery of secure, scalable mission applications. You will work across backend services, APIs, and front-end interfaces using Java, Python, TypeScript, and JavaScript, supporting sensor integration and C2 workflows.

Your role requires guiding engineering teams, applying secure-development practices, and coordinating with partner teams.