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Principal Software Engineer – Applied AI Development

AT&T

$141,300 - $237,400
Oct 18, 2025
Bothell, WA, US
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AT&T is seeking to develop autonomous AI agents that empower customers to purchase products and services seamlessly, delivering exceptional sales experiences across both text and voice channels.

Requirements

  • Proficiency in programming languages such as Python to develop agentic AI solutions.
  • Proficiency in API design and implementation for secure services.
  • Knowledge on application development using React, NodeJS.
  • Proficiency in prompt engineering is desired, to design, iteratively refine, and optimize the prompts.
  • Exposure to Tools or platforms that help version, test, and deploy prompt templates at scale.
  • Proficiency in LLMs, token cost optimization, and hallucination avoidance principles.
  • Hands-on experience in developing agentic workflows, semi-autonomous, or fully autonomous agents is preferred.

Responsibilities

  • Design, build, and maintain robust, scalable autonomous AI agents for conversational sales that can guide the user to conversational finish a sales including cart/checkout and payments.
  • Identify and implement the best architectures to develop AI agents such that they are reusable.
  • Implement MCP tools to enable bi-directional communication with other systems.
  • Implement, refine, and optimize LLM prompts to avoid hallucination and to deliver expected outcomes.
  • Apply security guardrails surrounding LLMs to protect sensitive data and ensure compliance with privacy and legal guidelines.
  • Implement logging and monitoring for the agents.
  • Design evaluation tests to validate the agents’ outcomes.

Other

  • Over 10 years of professional experience in software development with strong understanding of software engineering principles, design patterns, and algorithms.
  • Preferred Bachelor of Science in Computer Science, Statistics, Math or Scientific Computing; or certification with equivalent experience value add.
  • Excellent communication skills, with experience in designing, developing, and delivering presentations.
  • Proven ability to manage and delegate work across delivery teams to meet priorities.
  • Skill in client engagements, deciphering client business needs, and providing data solution recommendations.