Senior Back-End Developer - Onsite at Fort Belvoir, VA (Top Secret/SCI and CI Poly is Required)
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.
- 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.
- 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.
Skills Required
- Active TS/SCI clearance with CI Polygraph
- Bachelor's degree in Computer Science, Software Engineering, or related technical discipline
- 8+ years of professional back-end software development experience
- Experience developing applications using Python, Java, C#, Ruby, Node.js, or similar back-end languages
- Experience designing and developing RESTful APIs and GraphQL services
- Experience working with relational databases such as PostgreSQL or MySQL
- Experience working with 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 and secure coding practices in classified/secure environments
- Excellent analytical, troubleshooting, and problem-solving skills
- 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 tools such as Terraform or Ansible
- Experience developing serverless applications using AWS Lambda, Azure Functions, or similar technologies
What We Do
Booker DiMaio, King of Global Solutions, is an SBA 8(a) small business and minority-owned engineering & software modernization firm in Maryland leading the IT industry with proven performance and innovative design, development, and integration services. We lead agile-based digital transformations delivering sleek, intuitive, user-focused solutions. CORE COMPETENCIES: TECHNOLOGY: Cloud Computing, Big Data Visualization, Analytics, DevSecOps, Cybersecurity, Health IT, IT Modernization, Infrastructure As a Service, Integration & Sustainment, Software Engineering, System Architecture OPERATIONS: Staff Augmentation, Program Management, Telecommunications, User Experience Design, Administrative, Contact Center Support, Security Operations Center, Technology Transformation, Technology Advisory, Research & Development, Rapid Prototyping TECHNOLOGY PORTFOLIO: Booker DiMaio provides access to a suite of technology solutions through our reseller network, delivering added value to national security missions and government transformation for defense, intelligence, and civilian customers. A few of our notable partners are AWS, Microsoft Azure, FedRAMP Cloud Solutions, SecuLore DIFFERENTIATORS: SPECIALIZED - Our team is specially hired for each project and has a combined 90+ years of specialized industry experience. DRIVEN - We deliver solutions that are based on an in-depth understanding of the industry and commitment to improving user experiences. COMPREHENSIVE - We offer a comprehensive suite of end-to-end Big Data solutions, including cloud platforms, software engineering, DevSecOps, cybersecurity, and much more. COMPLIANT - Our tailored solutions facilitate compliance with CMMC, NIST, and other strict regulatory requirements. EFFECTIVE - Our cross-functional team of industry experts will carry your mission-critical operations to success, increasing digital proficiency across the globe with modern software and technology solutions. [email protected]









