Bachelor's degree with 9+ years, Master's with 7+ years, or PhD/JD with 4+ years of experience.
Active TS/SCI clearance with Polygraph.
Proven experience in building production web applications using ReactJS and modern JavaScript/TypeScript.
Strong proficiency in Python for backend services and API development (FastAPI, Flask, Django).
Hands-on experience with LangChain, LangGraph, and LangSmith or similar LLM frameworks.
Familiarity with vector databases and retrieval-augmented generation (RAG) architectures.
Experience with CI/CD pipelines and cloud deployment on AWS or Azure.
Understanding of secure development practices and compliance requirements.
Responsibilities
Design, build, and maintain responsive web interfaces using ReactJS.
Develop and maintain scalable backend services in Python, exposing clean APIs.
Implement and optimize AI-powered features using LangChain and LangGraph.
Build and maintain well-documented APIs connecting front-end and backend services.
Contribute to CI/CD pipelines for streamlined code deployment and testing.
Deploy and maintain applications in cloud environments (AWS/Azure) for high availability.
Collaborate with cybersecurity to embed security best practices in development.
Benefits
Collaborative work environment with a focus on innovation.
Opportunities for professional development and training.
Access to cutting-edge technologies and tools.
Flexible work arrangements to support work-life balance.
Comprehensive health and wellness programs.
Full Job Description
Job Description
QVine, an SAIC company, is seeking an experienced Full Stack Web Application Developer to join our team. This role involves hands-on technical expertise in building modern, scalable web applications with a focus on AI-driven features. The ideal candidate combines strong front-end development skills in ReactJS with robust Python backend experience, including the design and integration of LLM-powered applications using LangChain, LangGraph, and LangSmith.
Key Responsibilities:
Front-End Development: Design, build, and maintain responsive, user-friendly web interfaces using ReactJS, including state management, component architecture, and integration with RESTful and streaming APIs.
Python Backend Development: Develop and maintain scalable backend services in Python, exposing clean APIs to support front-end and AI-driven functionality.
LLM Application Engineering: Design, implement, and optimize AI-powered features using LangChain and LangGraph, including building conversational agents, retrieval-augmented generation (RAG) pipelines, and multi-step agentic workflows.
API Design & Integration: Build and maintain well-documented APIs that connect front-end applications with backend services and third-party LLM providers.
CI/CD & Deployment: Contribute to continuous integration and continuous delivery pipelines to streamline code deployment, testing, and release cycles for web applications.
Cloud Deployment: Deploy and maintain web applications and backend services in cloud environments (AWS and/or Azure), ensuring high availability, security, and cost efficiency.
Security & Compliance: Collaborate with the cybersecurity team to embed best practices into the development lifecycle, including secrets management, secure API design, vulnerability scanning, and compliance automation.
Qualifications
Bachelors and nine (9) years or more experience; Masters and seven (7) years or more experience ; PhD or JD and four (4) years or more experience.
TS/SCI with Polygraph.
Proven experience building production web applications with ReactJS and modern JavaScript/TypeScript.
Strong proficiency in Python, with experience developing backend services and APIs (e.g., FastAPI, Flask, or Django).
Hands-on experience with LangChain, LangGraph, and LangSmith, or comparable LLM orchestration and observability frameworks.
Familiarity with vector databases, embeddings, and retrieval-augmented generation (RAG) architectures.
Experience with CI/CD pipelines and cloud deployment on AWS or Azure.
Understanding of secure development practices and compliance requirements.
About SAIC
Science Applications International Corporation (SAIC) is a technology integrator in the technical, engineering, intelligence, and enterprise information technology markets. SAIC has approximately 26,000 employees and operates in more than 70 countries. The company was founded in 1969 and is headquartered in Reston, Virginia. SAIC provides services to the U.S. government, including the Department of Defense, the intelligence community, and civilian agencies. The company also serves commercial customers in the healthcare, energy, and financial services sectors.
