Principal Engineer - Agentic AI

Comcast Comcast · Media · Philadelphia, PA

Principal Engineer role focused on designing, building, and operating agentic AI systems for Comcast's Xfinity applications. The role involves creating reusable AI agents, integrating them into customer-facing chat experiences, and applying AI across the software development lifecycle. It emphasizes production delivery, scalability, observability, and ethical AI use, with a strong focus on agent-to-agent and human-AI orchestration.

What you'd actually do

  1. Design, build, and operate agentic systems that replace or augment human workflows
  2. Apply AI across the SDLC, including: Requirements and spec-driven development, System and agentic workflow design, AI-augmented coding and refactoring, AI-driven testing and defect remediation
  3. Build production-ready agent-based solutions with reliability, scalability, and observability
  4. Implement agent-to-agent, agent-to-UI, and human–AI orchestration
  5. Contribute to AgentOps, MLOps, and AI governance

Skills

Required

  • Agent Development Kit (ADK)
  • Python
  • Gemini Enterprise
  • Spec-driven development with AI
  • Prompt engineering
  • AI-assisted coding
  • AgentOps
  • LLM-as-a-Judge
  • Agent-to-agent orchestration
  • Agent-to-UI orchestration
  • Human-AI collaboration

Nice to have

  • Curiosity to explore emerging AI capabilities
  • Critical thinking to assess AI outputs
  • Adaptability in fast-moving, ambiguous environments

What the JD emphasized

  • 10+ years building agentic AI systems in production
  • Hands-on experience with Agent Development Kit (ADK)
  • Experience with Gemini Enterprise, or similar conversational AI platforms
  • Strong prompt engineering skills, including evaluation, iteration, and logging
  • Experience with LLM-as-a-Judge or comparable evaluation techniques
  • Proven ability to design agent-to-agent, agent-to-UI, and human–AI collaboration patterns

Other signals

  • AI agents
  • agentic systems
  • LLM-as-a-Judge
  • AgentOps
  • Gemini Enterprise
  • Agent Development Kit (ADK)