Today
Top Secret/SCI
Mid Level Career (5+ yrs experience)
Unspecified
Full Scope Polygraph
IT - Software
Reston, VA (On-Site/Office)
Job Title: Application Developer
Location: Reston, VA
Clearance: TS/SCI with Full Scope Polygraph (Required)
Company: Quantum Science Solutions (QSS)
Compensation: Open Rate
Position Overview
Quantum Science Solutions (QSS) is seeking a cleared and local Application Developer to support a mission-critical federal program in the Reston area. This role involves maintaining existing legacy applications and assisting in the transition to a modernized system architecture that enhances enterprise performance, scalability, and security.
The successful candidate will bring strong full-stack and backend development expertise, proficiency in Java, RDBMS support, and a solid understanding of API creation and integration. This position requires hands-on technical problem-solving and close collaboration within Agile teams to deliver high-quality, secure, and reliable solutions.
Key Responsibilities
• Maintain, enhance, and support legacy applications while facilitating transition to new architecture.
• Develop and maintain backend services, APIs, and data integrations.
• Provide RDBMS (Relational Database Management System) support including performance tuning and data modeling.
• Utilize Java for backend development and support system modernization efforts.
• Apply strong troubleshooting and problem-solving skills to address issues across all application layers.
• Collaborate within an Agile/Scrum environment alongside developers, testers, and system engineers.
• Document technical system architecture and application design.
• Manage source code using Git (GitHub, GitLab, etc.).
Mandatory Skills
• Minimum 5 years of experience in Full Stack Development.
• Minimum 3 years of demonstrated RDBMS support experience.
• Proven Java development experience.
• Strong troubleshooting and debugging skills.
• Demonstrated experience in backend development and API creation.
• Experience working within an Agile development environment.
• Ability to document technical system architectures and processes.
• Proficiency with Git (e.g., GitHub, GitLab).
Preferred Skills
• Experience with C# and legacy system development.
• Experience integrating applications with Geographic Information Systems (GIS).
Education
• Bachelor’s degree in Computer Science, Computer Engineering, Computer Information Systems, Computer Systems Engineering
• Equivalent experience may be substituted on a year-for-year basis.
Why QSS?
At QSS, you’re not just filling a role, you’re shaping mission-critical solutions that keep our
nation secure. We invest in your growth, foster innovation, and reward technical excellence.
Benefits include:
• Competitive compensation with annual performance bonuses
• Premium Medical, Dental & Vision coverage
• Generous PTO plus Federal Holidays
• 401(k) with company match
• Opportunities for continuous learning and skill development
Location: Reston, VA
Clearance: TS/SCI with Full Scope Polygraph (Required)
Company: Quantum Science Solutions (QSS)
Compensation: Open Rate
Position Overview
Quantum Science Solutions (QSS) is seeking a cleared and local Application Developer to support a mission-critical federal program in the Reston area. This role involves maintaining existing legacy applications and assisting in the transition to a modernized system architecture that enhances enterprise performance, scalability, and security.
The successful candidate will bring strong full-stack and backend development expertise, proficiency in Java, RDBMS support, and a solid understanding of API creation and integration. This position requires hands-on technical problem-solving and close collaboration within Agile teams to deliver high-quality, secure, and reliable solutions.
Key Responsibilities
• Maintain, enhance, and support legacy applications while facilitating transition to new architecture.
• Develop and maintain backend services, APIs, and data integrations.
• Provide RDBMS (Relational Database Management System) support including performance tuning and data modeling.
• Utilize Java for backend development and support system modernization efforts.
• Apply strong troubleshooting and problem-solving skills to address issues across all application layers.
• Collaborate within an Agile/Scrum environment alongside developers, testers, and system engineers.
• Document technical system architecture and application design.
• Manage source code using Git (GitHub, GitLab, etc.).
Mandatory Skills
• Minimum 5 years of experience in Full Stack Development.
• Minimum 3 years of demonstrated RDBMS support experience.
• Proven Java development experience.
• Strong troubleshooting and debugging skills.
• Demonstrated experience in backend development and API creation.
• Experience working within an Agile development environment.
• Ability to document technical system architectures and processes.
• Proficiency with Git (e.g., GitHub, GitLab).
Preferred Skills
• Experience with C# and legacy system development.
• Experience integrating applications with Geographic Information Systems (GIS).
Education
• Bachelor’s degree in Computer Science, Computer Engineering, Computer Information Systems, Computer Systems Engineering
• Equivalent experience may be substituted on a year-for-year basis.
Why QSS?
At QSS, you’re not just filling a role, you’re shaping mission-critical solutions that keep our
nation secure. We invest in your growth, foster innovation, and reward technical excellence.
Benefits include:
• Competitive compensation with annual performance bonuses
• Premium Medical, Dental & Vision coverage
• Generous PTO plus Federal Holidays
• 401(k) with company match
• Opportunities for continuous learning and skill development
group id: 91142086
