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Software Developer III
Washington, DC
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We are hiring an experienced Software Developer to help design, build, and sustain secure enterprise applications that directly support mission-critical operations. This role is ideal for a seasoned engineer who thrives in high-security environments and can contribute immediately within an Agile delivery model.


What You’ll Do

  • Design, develop, test, and maintain secure object-oriented software applications
  • Build and support enterprise solutions in Windows and Apache web services environments
  • Develop modern applications using C# and the .NET ecosystem
  • Work across full-stack components using AngularJS and React
  • Implement data persistence and background processing solutions with Entity Framework and Quartz
  • Deploy and manage CI/CD pipelines using Azure DevOps and GitLab
  • Support database development with PostgreSQL and MS SQL
  • Write clean, secure, and maintainable code aligned to secure development best practices
  • Mentor team members on secure coding standards and disciplined engineering practices
  • Contribute immediately within a fast-paced, mission-focused operational environment


What You’ll Bring

  • Active Top Secret security clearance with SCI eligibility (required)
  • DoD 8140 certification aligned to the 621 Software Developer work role (e.g., Security+, SSCP, CSSLP, or CISSP)
  • Bachelor’s degree in Computer Science or Software Engineering preferred (relevant experience may substitute)
  • At least 10 years of professional software development experience supporting enterprise applications
  • Demonstrated expertise in object-oriented development with strong proficiency in C#
  • Hands-on experience with:
  • .NET Core and .NET Framework
  • Entity Framework
  • Quartz
  • AngularJS and React
  • Azure DevOps and GitLab CI/CD
  • PostgreSQL and MS SQL
  • Proven ability to produce secure, high-quality code
  • Required technical certification: AZ-204 or AWS Developer Associate
  • Ability to operate with minimal ramp-up in a mission-critical environment


Nice to Have

  • Secure software development certifications (e.g., CSSLP or equivalent)
  • Experience with Java-based services or applications
  • Advanced cloud certifications (e.g., AWS Solutions Architect Professional or Azure Architect)
  • Experience leading secure design reviews and threat modeling efforts
  • Hands-on experience with containerization and container-based deployments
  • DevOps or CI/CD certifications (e.g., AZ-400 or AWS DevOps Engineer)
  • Cloud security certifications such as CCSP or advanced security credentials such as CISSP
  • Experience supporting classified, sensitive, or high-visibility defense or intelligence programs


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