Software Engineer — National Security & AI Systems

CACI International Inc.; Fort Meade (MD); On-site; USD 79,000 - 163,000; Full time

Benefits offered by this job

Healthcare

Wellness

Financial

Retirement

Family support

Continuing education

Time off benefits

Job summary

CACI International Inc. is seeking a Software Engineer to join a mission‑driven engineering team supporting critical national security programs. You will translate user needs into software design, develop features, and enhance systems across complex environments.

Responsibilities include implementing algorithms, debugging defects, integrating components, writing documentation, and leading teams when appropriate. A strong Python background and security clearance are required.

Qualifications

• Active TS/SCI with Polygraph security clearance.

Responsibilities

• Translate user needs into clear software design and performance requirements.
• Develop new features, improve existing capabilities, and contribute to overall system enhancements.
• Debug and resolve software defects to improve reliability and performance.
• Integrate software components into new or evolving systems and environments.
• Create simple data queries and interfaces for databases and data repositories.
• Recommend improvements to documentation, development standards, and engineering processes.
• Design and implement algorithms that meet or exceed performance and functional expectations.
• Support the creation and execution of software test procedures.
• Write, maintain, and review technical documentation for software and systems.
• Investigate system workflows, data usage, and operational challenges to develop effective software solutions.
• Serve as a team lead when appropriate based on the project’s development methodology
• Modify software to adapt to new hardware, correct errors, or enhance performance
• Use scientific analysis and modeling to design, develop, and refine software systems.
• Build complex queries and data interfaces for advanced data repositories.
• Apply strong Python skills to develop robust, production‑ready applications.
• Develop and maintain applications capable of supporting hundreds or thousands of users.
• Apply modern AI development concepts—including prompt engineering, context management, structured outputs, and tool/function calling—to accelerate development.
• Build resilient, scalable stream‑processing applications using modern messaging and event‑streaming platforms.
• Utilize AI coding assistants to streamline code generation, refactoring, debugging, and automation.

Skills

Active TS/SCI w/ Polygraph

3+ years SWE experience

Bachelor’s degree in CS or related

Education

Bachelor’s degree in Computer Science or related discipline

Job description

CACI International Inc. is seeking a Software Engineer to join a mission‑driven engineering team supporting critical national security programs. You will translate user needs into software design, develop features, and enhance systems across complex environments.

Responsibilities include implementing algorithms, debugging defects, integrating components, writing documentation, and leading teams when appropriate. A strong Python background and security clearance are required.