Full Stack Developer Security Clearance

Position: Full Stack Developer with Security Clearance
iQuasar LLC is seeking to fill a Full Stack Developer for one of our federal customers. iQuasar LLC is headquartered in Northern Virginia. Be a part of an award-winning, small business specializing in IT Consulting. We value our team members and their contributions, and to show our appreciation, we are proud to offer a comprehensive and competitive benefits package to candidates.

•

Location:

Ashburn, VA
• Job:
Full Stack Developer
•

Schedule:

Full-time

Summary:

Strong experience in modern web development and applied AI integration. The ideal candidate will be comfortable building scalable, data-driven web applications using React, Next.js, NestJS, and Mongo

DB, and will have hands-on experience implementing Retrieval-Augmented Generation (RAG) systems and prompt engineering for AI-driven features.
You’ll work across the stack to design, develop, and deploy robust products that leverage both front-end interactivity and intelligent backend systems. Responsibilities:
• Design, build, and maintain scalable full-stack applications using Next.js, React, NestJS, and Mongo

DB.
• Integrate and optimize AI-based features, including RAG pipelines and LLM-powered tools.
• Develop and tune prompt templates, retrieval chains, and embeddings for contextual AI performance.
• Collaborate with product managers, designers, and data scientists to translate requirements into technical solutions.
• Implement secure APIs, efficient data models, and robust backend services.
• Ensure application performance, security, and reliability across deployments.
• Participate in code reviews, testing, and CI/CD pipelines.
• Stay up to date with modern frameworks, AI integration patterns, and best practices in full-stack engineering.

Qualifications:

• 3–5 years of experience as a Full Stack Engineer or similar role.
• Strong proficiency in JavaScript/Type Script, React, Next.js, NestJS, and Mongo

DB.
• Experience building and deploying RAG-based AI systems (e.g., integrating vector databases, embedding models, or LLM APIs).
• Familiarity with prompt engineering techniques for optimizing AI outputs.
• Strong understanding of RESTful and Graph

QL API design.
• Experience with version control (Git), containerization (Docker), and cloud platforms (AWS, GCP, or Azure). Preferred:
• Familiarity with Lang Chain, Llama Index, or similar frameworks for AI application development.
• Experience with vector databases (e.g., Pinecone, Weaviate, Milvus).
• Knowledge of CI/CD pipelines and Dev Ops practices.
• Experience working in Agile/Scrum teams. If you are interested in this position, please send a copy of your latest resume to with the information requested below. Also, let us know the best time and number to call to discuss this opportunity. In case this position is not the right fit for you, feel free to share this opportunity with your network.

Thank you!
• Availability to start a new job
• Best rates
• Contact number Please don’t hesitate to reach out with any questions. All employment decisions are based on qualifications, merit, and business needs. Regards, Nashita Wani
iQuasar LLC
Cleared Recruitment | Proposal Development | Technology

Direct:
Main:  Ext. 579
iQuasar, LLC is an Equal Opportunity and Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion/belief, national, social, or ethnic origin, disability, gender/gender identity, marital/partnership status, pregnancy, medical history or genetic information, family or parental status, or any other status protected by federal and state regulations.