Full Stack Software Developer - TOR

About the role

CACI is seeking a Full Stack Developer to support the Department of Homeland Security's Cyber Crimes Center (C3) in designing and implementing web applications and investigative tools. The role builds scalable, secure applications that support law enforcement investigations targeting criminal networks and dark web operations, working within a collaborative technical team delivering mission-critical software for national security operations.

Key responsibilities

• Design and implement complex web applications and custom tools and sites supporting DHS C3 investigative operations
• Build applications using dark web technologies such as Tor for secure, anonymous communication
• Develop RESTful APIs and microservices, and integrate applications with existing investigative systems
• Write clean, maintainable code in Python and JavaScript, and responsive UIs with React, Angular or Vue.js
• Develop server-side applications with Express.js, Django or Flask
• Maintain and deploy code with Docker, Git/GitHub and CI/CD pipelines, and optimize database schemas
• Work with data scientists, infrastructure engineers and cybersecurity specialists, and take part in code reviews, testing and QA
• Document architecture and APIs, troubleshoot defects, and ensure compliance with federal security standards

Required profile

• Bachelor's degree in Computer Science, Software Engineering or a related technical field
• 5+ years of full stack development experience delivering production applications
• 4+ years in frontend frameworks (React, Angular or Vue.js) with strong JavaScript/TypeScript
• 4+ years in backend development with Python, Node.js or Java
• U.S. citizen able to pass a DHS background investigation (felony, drug use and misconduct checks)
• Willing and able to work onsite in Fairfax, Virginia

Required skills

• RESTful API design and microservices architecture
• Relational databases (PostgreSQL, MySQL) and SQL optimization
• Git and Docker/Kubernetes
• Software design patterns, data structures and algorithms
• Web security, secure coding and anonymization technologies

Desired: Master's degree, experience integrating AI/ML models, and experience building dark web applications with Tor.

What we offer

• Proposed pay range of $94,400 - $198,200
• Healthcare, wellness, financial, retirement, family support, continuing education and time off benefits
• Flexible time off and learning resources