Full Stack Developer — Secure Web Apps & APIs

CACI International Inc.; Fairfax, Northern (VA, KY); Hybrid; USD 94,000 - 198,000; Full time

Job summary

CACI International Inc. seeks a seasoned Full Stack Software Developer in Fairfax, VA, to design and implement scalable web applications supporting DHS C3 investigative operations.

You will work in a collaborative team to build secure, high-performance software for national security challenges in anonymized environments. The role requires 5+ years in full stack development, 2+ years with dark web tech (Tor), 4+ years in frontend frameworks (React/Angular/Vue), and 4+ years backend in

Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or related field.
• 5+ years of demonstrated full stack development experience.
• 2+ years of experience developing dark web applications using Tor.
• 4+ years of frontend frameworks (React, Angular, or Vue.js) with strong JavaScript/TypeScript skills.
• 4+ years of backend development experience with Python, Node.js, or Java.
• Strong understanding of RESTful API design and microservices architecture.
• Experience with relational databases (PostgreSQL, MySQL) and SQL query optimization.
• Proficiency with version control systems (Git) and collaborative development workflows.
• Experience maintaining and deploying applications using Docker and Kubernetes containerization.
• Strong understanding of software design patterns, data structures, and algorithms.
• Knowledge of web security best practices, secure coding principles, and anonymization technologies.
• Willing and able to work onsite in Fairfax, VA
• Must be a U.S. Citizen with the ability to pass DHS background investigation.

Responsibilities

• Design and implement complex web applications with advanced knowledge of frontend and backend technologies.
• Develop and maintain custom applications, tools, and sites to support DHS C3 investigative operations.
• Build applications using dark web technologies such as Tor for secure, anonymous communication.
• Build custom solutions that integrate with existing investigative systems and infrastructure.
• Develop RESTful APIs and microservices architecture to enable system integration and data exchange.
• Write clean, maintainable code in Python and JavaScript for investigative software systems.
• Implement responsive user interfaces using modern frameworks (React, Angular, or Vue.js).
• Develop server-side applications using frameworks such as Express.js, Django, or Flask.
• Maintain and deploy code using Docker, version control (Git/GitHub), and CI/CD pipelines.
• Design and optimize database schemas for performance and scalability.
• Integrate applications with existing investigative systems through APIs and system interfaces.
• Develop solutions that operate in anonymized and dark web environments while maintaining operational security.
• Collaborate with data scientists, infrastructure engineers, and cybersecurity specialists on cross-functional projects.
• Participate in code reviews, testing, and quality assurance processes.
• Document software architecture, APIs, and technical specifications.
• Troubleshoot and resolve software defects and performance issues.
• Support software development lifecycle from requirements gathering through production deployment.
• Ensure applications meet federal security standards and compliance requirements.

Skills

Full stack development

Dark web development

Frontend frameworks

Backend development

RESTful APIs

SQL databases

Git / CI/CD

Docker / Kubernetes

Web security

Anonymization tech

Education

Bachelor's degree in CS/SE

Master's degree (preferred)

Tools

Docker

Kubernetes

Job description

CACI International Inc. seeks a seasoned Full Stack Software Developer in Fairfax, VA, to design and implement scalable web applications supporting DHS C3 investigative operations.

You will work in a collaborative team to build secure, high-performance software for national security challenges in anonymized environments. The role requires 5+ years in full stack development, 2+ years with dark web tech (Tor), 4+ years in frontend frameworks (React/Angular/Vue), and 4+ years backend in