Junior Software Engineer

Leidos is dedicated to making the world a safer place. This starts with helping our customers in the Defense Industry achieve their critical missions. Our dedicated Defense Group employees are solving critical challenges across the globe. At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers’ success. We empower our teams, contribute to our communities, and operate sustainably. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business. With offices across the United States engaging in the defense, space, cyber and commercial fields, Leidos provides responsive, cost-effective engineering, scientific and IT solutions. Leidos is well known for our people-oriented culture, positive work environment, technical excellence, and resilient business ethics.

Leidos is seeking a talented Software Engineer to work in our Huntsville office. This is an exciting opportunity to use your experience to help develop software for Tactical strike guided munition programs.

​This position focuses on the development of robust, innovative software frameworks, as well as the fielding, support, and maintenance of software products. Software products range from analysis tools/simulations, mission planning software, and components of mission-critical systems.

Primary Responsibilities

• Assist with design and implementation of full-stack software architecture and design patterns for missile system applications implementing major system functions (i.e. guidance, navigation, control, telemetry, and mission planning).
• Participate in technical reviews, design reviews, and code reviews to ensure quality and compliance.
• Support technical decisions on tools, frameworks, and development approaches.
• Develop software that is designed to promote modularity, reusability, portability, and maintainability requirements.
• Participate in code reviews, ensuring coding standards and best practices are applied.
• Direct communication with team members will be required on a frequent basis.
• Support flight test operations and post-test analysis.
• Develop software that adheres to military and aviation standards for safety, cybersecurity, and RMF.

Basic Qualifications

• Candidate must possess at least a bachelor’s degree in Software Engineering, Computer Science, Computer Engineering, Electrical Engineering, Aerospace Engineering, Mathematics, or equivalent technical degree with an overall GPA of 3.0 or higher.
• Candidate should have 2+ years of relevant technical experience.
• Candidate must be a U.S. citizen and be eligible to obtain and maintain a U.S. Department of Defense security clearance.
• Relevant technical experience must include developing, integrating, testing, or troubleshooting embedded software or embedded-adjacent applications that interface with, operate, monitor, support, simulate, control, or communicate with embedded systems.
• Must be a resident of North Alabama or willing to relocate to the Huntsville-North Alabama area.
• Demonstrable experience with C/C++ required.
• Experience with Python or Java.
• Understanding of software architecture patterns and design principles.
• Experience with software configuration management principles and techniques.
• Experience with software quality engineering concepts.
• Experience with good software standards and practices.

Preferred Qualifications

• Experience with embedded missile systems, aerospace, or weapons systems development.
• Familiarity with real-time embedded systems.
• Knowledge of Modular Open Systems Approach (MOSA) principles and application
• Experience with containerization, CI/CD pipelines, and microservices technology.
• Knowledge of guidance & control algorithms.
• Knowledge of navigation systems.
• Knowledge of mission planning systems (NOMS, JMPS).
• Knowledge of sensors used in guidance, navigation, or mission planning systems.
• Proficiency with MATLAB/Simulink for algorithm development and simulation a plus.
• Understanding of hardware-software integration and software systems engineering principles
• Strong problem-solving abilities and systems-level thinking.

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:

September 28, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:

Pay Range $69,550.00 - $125,725.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.