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Jr Full Stack Developer with Security Clearance

Company:
Quantum Science Solutions
Location:
Tysons, VA, 22102
Posted:
March 13, 2026
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Description:

Opportunity via QSSHire Talent-as-a-Service Recruiting Role: Junior Full Stack Developer Location: Tysons, VA (On-site as required) Clearance: Active TS/SCI with Full Scope Poly Required Rate: Open Are You a Junior Full Stack Developer Who Thrives in Mission-Critical Web Development?

QSSHire is partnering with a secure customer to identify a Junior Full Stack Developer to support mission-critical functions through modern software development.

This opportunity is ideal for a hands-on developer who can contribute across the full stack, supporting front-end user interfaces, backend application services, RESTful APIs, databases, and cloud-native deployments in a secure Agile environment.

You’ll join a collaborative team working closely with a Lead Engineer and fellow team members to support the continued development and sustainment of web applications, delivering enhancements, integration support, testing, and deployment assistance.

In This Role, You’ll: • Work with the Lead Engineer and team members to design, develop, test, and deliver software solutions in an Agile environment.

• Contribute to full stack development across: o Frontend end-user interfaces o Backend application services o Data layers • Translate functional requirements into technical implementations.

• Develop, consume, and integrate with RESTful APIs.

• Support integrations with other software systems and databases.

• Participate in code reviews and help enforce development best practices.

• Assist with testing and deployment activities and help maintain deployed applications.

• Support development efforts aligned with Section 508 accessibility compliance.

• Contribute to writing and maintaining automated tests.

You’ll Succeed Here If You Have: • Active TS/SCI with Full Scope Polygraph (FSP) (required) • Experience with front-end development using modern JavaScript frameworks.

• Experience developing backend services and integrating RESTful APIs.

• Experience with relational and non-relational databases.

• Experience developing, deploying, and maintaining systems on cloud platforms such as AWS and/or Azure.

• Experience working in an Agile / Scrum team environment.

• Experience building and maintaining web applications using: o React with TypeScript (or comparable frameworks such as Vue or Angular) o Python (or another modern backend language) for backend services and RESTful API development o SQL and/or NoSQL databases o AWS services such as Lambda, DynamoDB, RDS, S3 o CI/CD pipelines and DevOps workflows o Automated testing practices Bonus Points If You Have: • Hands-on experience supporting CI/CD pipeline implementation and maintenance • Experience supporting 508 compliance/accessibility testing • Familiarity with deployment/sustainment support in secure production environments Why QSSHire?

As a modern Talent-as-a-Service recruiting partner, QSSHire connects top cleared professionals with impactful, secure roles.

We emphasize mission alignment, transparency, and purpose-driven career opportunities, because your next role should be as meaningful as your expertise.

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