Full -Stack Developer

We’re seeking a highly capable and forward -thinking Full -Stack Developer to join a high -impact team supporting mission -critical systems for the U.S. Department of Homeland Security (DHS). In this role, you’ll design and build intelligent, scalable web applications using modern frameworks such as React, Next.js, NestJS, and MongoDB, while also integrating cutting -edge AI capabilities like Retrieval -Augmented Generation (RAG) and prompt engineering to deliver contextual, dynamic features.
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You’ll play a key role in architecting and delivering innovative solutions that fuse traditional development with next -gen AI experiences.
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Key Responsibilities: <\/b>
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• Design and develop scalable, performant full -stack applications using React, Next.js, NestJS, and MongoDB
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• Architect and implement AI -driven features including RAG pipelines, LLM integrations, and retrieval chains
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• Tune prompt templates, embeddings, and contextual data flows to optimize AI output
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• Build secure, maintainable RESTful and GraphQL APIs
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• Collaborate with designers, PMs, and data scientists to turn complex requirements into working features
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• Ensure security, performance, and stability across frontend and backend services
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• Participate in peer code reviews, automated testing, and CI/CD pipeline enhancements
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• Stay informed on modern frameworks, AI integration techniques, and best practices
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  Requirements <\/h3>

  Required Qualifications: <\/b>
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  • 3–5 years of experience in Full -Stack Development
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  • Proficiency in JavaScript/TypeScript, React, Next.js, NestJS, and MongoDB
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  • Demonstrated experience building and deploying RAG -based AI systems (e.g., LLM APIs, embedding models, vector databases)
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  • Working knowledge of prompt engineering techniques
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  • Solid understanding of API design (REST & GraphQL), authentication, and security best practices
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  • Experience with Git, Docker, and cloud services (AWS, GCP, or Azure)<\/span>
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    Preferred Qualifications: <\/b>
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    • Hands -on experience with LangChain, LlamaIndex, or similar frameworks
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    • Familiarity with vector databases such as Pinecone, Weaviate, or Milvus
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    • CI/CD and DevOps experience in Agile/Scrum environments
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    • Prior experience supporting DHS or federal agencies
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      Benefits <\/h3>

      Core Benefits:
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      • Paid Time Off PTO):TEN (10) Paid days off & FIVE (5) Floating days off.
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      • Holidays: 11 Paid Holidays. Flex time can be utilized instead of holiday time usage.
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      • Payroll: Paid Bi -Monthly.
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      • 401(k): Partnered with the SECOND LARGEST Retirement plan provider in the U.S. Guaranteed 3% match. Eligibility – 21 years of age or older, after 3 months of employment
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      • Individual or company -wide performance and recognition awards (Quarterly <\/span>
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        Health Benefits:
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        • UNITED HEALTHCARE PPO, extensive national coverage.
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        • INCLUDES: Medical/Dental/Vision/HSA.
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        • Eligible on the first of the month, immediately after the start date.
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        • Submit the enrollment form within 30 days of your start date otherwise, you will have to wait until October for the new year enrollment.
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          Quality of Life Benefits:
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          • Training & Career Development Reimbursement of Tuition and training needed to support career development.
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          • $150 monthly reimbursement contribution paid monthly towards parking expenses.
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          • Receipts must be submitted by the close of business on the 25th of each month.
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          • Reimbursements will be paid on the first payroll AFTER reimbursements are submitted each month.
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            Special Benefits:
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            • Performance bonus – Project -based
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            • Yearly bonus – Company based <\/span>
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              Apply Now!
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              You can also email your resume to View email address on us.fitly.work <\/a> . We look forward to reviewing your application!
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