Application Developer

Leidos is seeking a highly qualified candidate for the Application Developer position for the Integrated Defensive Cyber Systems Contract. This team operates in an Agile Scrum development environment and uses sound software engineering, object oriented, and functional programming principles to ensure that developed code has high quality, is maintainable, efficient, reliable, understandable, secure and fault tolerant. This position is located near Lackland Air Force Base; all work is onsite. 

Primary Responsibilities:

• Work with engineering, security, and operations teams to maintain and/or enhance deployed mission hardware and software to meet performance and security requirements using continuous build, inspection, testing, and deployment processes. 
• Apply security architecture policies and principles to meet system security objectives for confidentiality, integrity, availability, authentication, and non-repudiation requirements. 
• Ensure systems security measures and operations and maintenance activities are documented and updated as necessary. 
• Ensure security patches meet timelines for the operational environment. 
• Verify and update security documentation reflecting application/system security design features. 
• Develop, test, and deploy hardware and software using continuous integration methods, processes, and tools. 
• Develop performant software in resource-constrained environments. 
• Perform full software development lifecycle, including design, development, testing / automation, and integration. 
• Select, deploy, implement, and maintain Continuous Integration/Continuous Deployment (CI/CD) tools, processes, and coding language and standards for developing software. 
• Transition embedded and non-embedded software developed and sustained using traditional software methods into the DevSecOps environment. 
• Conduct functional, connectivity, cybersecurity, and certification testing. 
• Analyze and document software, hardware, or interoperability test results. 
• Identify risks, vulnerabilities, and deficiencies and recommend actions and security measures to correct/mitigate them. 

Basic Qualifications:

• Bachelor’s degree and 8+ years’ experience or master’s degree with 6+ years’ experience; additional years of related experience will be considered in lieu of a Bachelor’s degree. 
• Proven expertise in the full software development lifecycle, including designing, developing, testing, and deploying mission-critical applications.
• Strong understanding of software configuration management tools and change tracking processes.
• Exceptional technical qualifications and/or highly unique expertise relevant to the role.
• Ability to provide technical guidance, strategic recommendations, and expert analysis to program and project teams.
• Experience in evaluating, optimizing, and maintaining client-specific and mission-critical systems to enhance performance, security, and reliability.
• Must hold an IAT Level II certification (e.g., Security+) or higher.
• Familiarity & knowledge:  Apache Spark, Kubernetes, Kafka, SIMP Project, Ansible, Docker, GIT, Red Hat Enterprise Linux (RHEL), Suricata, Zeek, Kibana, Logstash, Elastic Search, Neo4J, PostgreSQL, AWS Cloud & Nifi.
• Experience in the following applications frameworks (at least one, preferably two):  React, Angular, Python, JavaScript, CSS, & HTML, & Material UI 
• Must possess an active Secret clearance and ability to obtain TS/SCI clearance is required to be considered. 

Preferred Qualifications:

• MA/MS degree in Software Development or similar
• Knowledge of Agile development
• Experience using Atlassian tool suite to include JIRA and Confluence to track activities and knowledge management documentation.
• Experience with working Army, Navy and Air Force Cyber Customers highly desired
• Excellent coordination and collaboration skills 
• Active TS/SCI preferred

Original Posting:

March 11, 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 $104,650.00 - $189,175.00

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.