Senior Back-End Developer - Onsite at Fort Belvoir, VA (Top Secret/SCI and CI Poly is Required)

Senior Back-End Developer
Location: Fort Belvoir, VA (Onsite)
Security Clearance: Active TS/SCI with CI Polygraph Required

Position Overview

Booker DiMaio is seeking an experienced  Senior Back-End Developer to support a mission-critical Federal Intelligence Community program. This position is responsible for designing, developing, and maintaining secure, high-performance server-side applications, APIs, and system integrations that support mission-critical operations within a highly classified environment.
The ideal candidate has extensive experience building scalable back-end systems, designing RESTful APIs, developing database-driven applications, and integrating secure enterprise solutions. This individual will work closely with front-end developers, data engineers, and other technical teams while leading technical design efforts, conducting code reviews, and mentoring junior developers.

Key Responsibilities

• Design, develop, and maintain secure, scalable server-side applications and services.
• Develop and maintain RESTful APIs and system integrations supporting mission-critical applications.
• Design, build, and optimize relational and NoSQL databases to ensure performance, scalability, and reliability.
• Integrate applications with government authentication systems, security frameworks, and enterprise services.
• Implement security controls and best practices to protect applications operating within highly classified environments.
• Collaborate with front-end developers, data engineers, and cross-functional technical teams throughout the software development lifecycle.
• Lead code reviews, maintain technical documentation, and promote software development best practices.
• Troubleshoot complex application and database issues while mentoring junior developers.

Required Qualifications

• Active  TS/SCI clearance with CI Polygraph .
• Bachelor's degree in Computer Science, Software Engineering, or a related technical discipline.
• 8+ years of professional back-end software development experience.
• Strong experience developing applications using Python, Java, C#, Ruby, Node.js, or similar back-end programming languages.
• Experience designing and developing RESTful APIs and GraphQL services.
• Experience working with relational databases such as PostgreSQL or MySQL and NoSQL databases such as MongoDB or Cassandra.
• Experience developing cloud-based applications using AWS, Azure, or Google Cloud Platform.
• Experience using Docker and Kubernetes containerization technologies.
• Experience with server-side frameworks such as Django, Spring, or .NET.
• Strong understanding of application security, secure coding practices, and software development within classified or highly secure environments.
• Excellent analytical, troubleshooting, and problem-solving skills.

Preferred Qualifications

• Experience supporting Intelligence Community or Department of Defense programs.
• Experience with signal processing or data analysis applications.
• Experience with high-performance computing (HPC) environments.
• Experience with messaging technologies such as Kafka or RabbitMQ.
• Experience with in-memory data technologies such as Redis or Memcached.
• Experience designing and developing microservices architectures.
• Experience using Infrastructure as Code (IaC) tools such as Terraform or Ansible.
• Experience developing serverless applications using AWS Lambda, Azure Functions, or similar technologies.

If you are an experienced Back-End Developer with a passion for building secure, scalable, and high-performance applications supporting mission-critical operations, we encourage you to apply and learn more about this opportunity.