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Gen AI Engineer Python, LLM

Job in McLean, Fairfax County, Virginia, USA
Listing for: Purple Drive Technologies
Full Time position
Listed on 2026-09-03
Job specializations:
  • Software Development
    AI Engineer (Applied/Software), Machine Learning/ ML Engineer, Python, AI Reliability/ Performance Engineer
Job Description & How to Apply Below
Position: Gen AI Engineer [Python, LLM]

Gen AI Engineer (LLM, Lang Chain, AI Agents)

We are seeking a Gen AI Engineer with strong expertise in Python, Large Language Models (LLMs), and AI agent development using Lang Chain.

The ideal candidate will be responsible for designing, building, and deploying AI-powered solutions, including intelligent agents, custom tools, and scalable architectures. This role requires a blend of hands-on coding, innovation, and architectural thinking to deliver cutting-edge Generative AI applications.

Key Responsibilities

AI & GenAI Development

  • Design and develop AI-powered applications using Large Language Models (LLMs)
  • Build and deploy intelligent AI agents using Lang Chain framework
  • Develop custom tools and integrations for AI agents (MCPs / tool-based extensions)

Architecture & Solution Design

  • Design scalable Gen AI architectures and workflows
  • Implement end-to-end solutions including:
    • Prompt engineering
    • Context management
    • Retrieval-Augmented Generation (RAG)
  • Ensure performance, scalability, and reliability of AI systems

Agent Development & Orchestration

  • Program and orchestrate multi-agent systems
  • Build custom connectors/tools for enhanced agent capabilities
  • Optimize agent performance and response quality

Innovation & Research

  • Explore and implement new advancements in Generative AI and LLM ecosystems
  • Continuously improve models, prompts, and workflows
  • Prototype innovative AI use cases and solutions

Collaboration & Delivery

  • Collaborate with cross-functional teams (Product, Data, Engineering)
  • Translate business requirements into AI-driven solutions
  • Participate in Agile development and code reviews

Required Skills & Experience

  • 8–10 years of experience in software engineering / AI development
  • Strong expertise in:
    • Python (mandatory)
    • Generative AI / LLMs
  • Hands-on experience with:
    • Lang Chain framework
    • AI Agent development
    • Custom tool / MCP development for agents
  • Strong understanding of:
    • Prompt engineering
    • RAG (Retrieval-Augmented Generation)
    • AI workflows and orchestration

Technical Skills

  • Programming:
    Python
  • Frameworks:
    Lang Chain (mandatory)
  • AI: LLMs (OpenAI, open-source models, etc.)
  • Concepts: AI Agents, RAG, Prompt Engineering
  • APIs: REST / JSON integrations
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