Senior Full-Stack Software Engineer - Mission-Critical

Jobtome; Peyton (WI); On-site; USD 97,000 - 180,000; Full time

Benefits offered by this job

Health insurance

401(k) match

Paid time off

Job summary

L3Harris is seeking a Senior Specialist, Software Engineering (Full Stack) to join MOSSAIC APE program in Colorado Springs. You will lead the design and implementation of secure, scalable mission applications using Java, Python, TypeScript, and JavaScript to support sensor integration, C2 workflows, and user-facing capabilities.

Responsibilities include guiding code reviews, driving secure development practices, mentoring engineers, and coordinating with partner teams.

Qualifications

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

Responsibilities

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

Skills

Full-stack engineering

Technical leadership

Mentorship

Education

Bachelor's degree

Graduate degree

Experience in lieu of degree

Tools

Java

Python

TypeScript

JavaScript

C/C++

Rust

Go

Kubernetes

Kafka

RabbitMQ

ZeroMQ

NATS

Job description

L3Harris is seeking a Senior Specialist, Software Engineering (Full Stack) to join MOSSAIC APE program in Colorado Springs. You will lead the design and implementation of secure, scalable mission applications using Java, Python, TypeScript, and JavaScript to support sensor integration, C2 workflows, and user-facing capabilities.

Responsibilities include guiding code reviews, driving secure development practices, mentoring engineers, and coordinating with partner teams.