Senior Software Design Engineer

Leidos has a new and exciting opportunity for a Senior Software Design Engineer in our National Security Sector's (NSS) Cyber & Analytics Business Area (CABA). Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos, we offer competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and much more. Join us and make a difference in National Security!

Job Summary:

Join our team supporting a cutting-edge Cyber Program and make an impact by guiding the definition, implementation, and delivery of capability focused on U.S. CYBER COMMANDS (USCYBERCOM) Persistent Cyber Range Training Environment (PCTE). We are in search of talented Software Engineers to join our dynamic team in Orlando, FL. This opportunity will provide professional growth that is singularly focused on providing world class solutions to our customers in an exciting, collaborative, and inclusive environment. You will be challenged and provided with a tremendous opportunity to expand your skills in a customer-facing, fast-paced, and rewarding environment. Don't miss the opportunity to take your career to the next level and be part of an innovative and dynamic environment. Apply now!

Essential Job functions:

• Work through agile-based software lifecycle development that includes requirements analysis, design, & implementation.
• Recommend solutions and corrective actions to technical applications and software issues.
• Provide technical mentorship and guidance to less-experienced engineering staff.
• Apply software engineering standards and assist engineering teams in software system or subsystem development and documentation efforts.
• Understands and adheres to project schedules and stays within technical standards and design principles.
• Efficiently diagnose and debug front-end and back-end software issues.
• Clearly and effectively communicate problems and solutions with the team and external stakeholders, both verbally and electronically.
• Plans, conduct, directs and evaluates software projects across an agile development cycle.

Basic Qualifications:

• Educational Background: Bachelor of Science degree in a relevant field and ten (10) years of related software development/design experience.
• Software Development: Hands-on expertise with Java/C++ and object-oriented programming. Experience with JavaScript, Java Spring Boot, React, Angular and other related libraries desired. Experience in Linux shell scripting. Experience in cloud-based infrastructures and environments.
• Ability to apply software development process fundamentals in an Agile environment.
• Communication Skills: Ability and experience effectively communicating technical and programmatic issues. Demonstrated ability to work within teams. Strong organizational skills. Self-starter that can work independently while possessing communication skills to work effectively with software development teams.
• Security Clearance requirement: Position requires U. S. Citizenship status and a SECRET security clearance, with an ability to obtain a TOP SECRET security clearance.

Preferred experience:

• Experience within the commercial software development and deployment workforce
• Experience with containerization of applications
• Experience in Kubernetes and container orchestration
• Experience with back-end development, including node.js, web servers (Nginx, Apache, etc.), database servers, etc.
• Secure web-based development
• Agile development process and planning tools (Jira, Confluence, etc.)
• In-depth knowledge Git repositories and DevOps principles
• Strong technical grasp of database design
• Experience in Scaled Agile Framework (SAFe) would be considered a plus
• Commercial software development experience with Amazon, Google, etc.

At Leidos, the opportunities are boundless. We challenge our staff with interesting assignments that allow them to thrive professionally and personally. For us, helping you grow your career is good business. We look forward to learning more about you – apply today.

Careers.leidos.com

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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:

December 9, 2025

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 $107,900.00 - $195,050.00

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.