Back-End Development - TS/SCI

Singularity Security Group · Springfield, VA, US

Full-time$135,000 – $185,000Published Jul 23, 2026

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About the role

Job Summary

We are seeking a highly skilled and motivated Back-End Developer with TS/SCI clearance to join our dynamic team.

Duties shall include:

  • Designing, developing, and maintaining server-side applications and APIs
  • Building and managing databases, and ensuring data integrity and security
  • Design and optimize database queries and data access layers
  • Integrate with Government authentication systems and security frameworks
  • Writing clean, efficient, and well-documented code
  • Leading code reviews and promoting best practices in back-end development
  • Implement security controls and ensure compliance with applicable regulations
  • Create and maintain documentation for back-end systems and interfaces\
  • Collaborate with front-end developers to ensure seamless integration
  • Coordinate with data engineering team on database design and implementation
  • Provide technical leadership and mentoring to junior developers

Skills and Experience:

Required:

  • Active TS/SCI with CI polygraph security clearance
  • Bachelor's degree in Computer Science, Software Engineering, or related field
  • Minimum of 8 years of experience in back-end development
  • Expertise in one or more back-end programming languages such as Python, Java, C#, Ruby, or Node.js.
  • Strong understanding of database technologies, both SQL (e.g., PostgreSQL, MySQL) and NoSQL (e.g., MongoDB, Cassandra).
  • Experience with API design and development (e.g., REST, GraphQL).
  • Proficiency with cloud platforms (e.g., AWS, Azure, GCP) and containerization technologies (e.g., Docker, Kubernetes).
  • Knowledge of server-side frameworks (e.g., Django, Spring, .NET).
  • Knowledge of database design and optimization techniques
  • Experience with API development and integration
  • Understanding of security best practices for classified environments
  • Experience with authentication and authorization systems

Desired:

  • Experience working with classified systems and security requirements
  • Knowledge of TSSC operations and requirements
  • Experience with cloud-based infrastructure and services
  • Understanding of signal processing and data analysis techniques
  • Experience with high-performance computing for data processing
  • Experience with message brokers like Kafka or RabbitMQ
  • Knowledge of caching technologies such as Redis or Memcached
  • Expertise in designing and implementing microservices architectures
  • Proficiency with Infrastructure as Code (IaC) tools like Terraform or Ansible
  • Experience with serverless computing (e.g., AWS Lambda, Azure Functions)

Pay: $135,000.00 - $185,000.00 per year

Benefits:

  • 401(k)
  • 401(k) matching
  • Dental insurance
  • Health insurance
  • Life insurance
  • Paid time off
  • Professional development assistance
  • Retirement plan
  • Vision insurance

Work Location: In person

Description sourced from the public Indeed listing — this role isn't indexed from the company's career page yet.

Skills

  • Python
  • Java
  • C#
  • Node.js
  • REST
  • GraphQL
  • PostgreSQL
  • MySQL
  • MongoDB
  • Cassandra
  • Docker
  • Kubernetes
  • Django
  • Spring Boot
  • .NET

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