Hybrid Conversational AI Agent Developer

Mckesson Corporation

Mississauga

Hybrid

CAD 115,000 - 154,000

Full time

14 days+

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Job summary

McKesson is seeking a Digital Agent Developer to design, build, test, and continuously improve AI-powered agents across voice, chat, and email channels within the Sierra Agent OS ecosystem. You will partner with platform engineers, solution architects, and business stakeholders to deliver scalable, secure agent solutions and improve customer outcomes.

Required 2+ years in AI agents or related software development, plus hands-on experience with prompts, tool calls, and multi-LLM patterns.

Qualifications

2+ years of experience building AI agents or conversational AI solutions or equivalent hands-on software development with agent work.
Hands-on experience designing, building, or tuning LLM-based AI agents or digital assistants.
Experience with prompt engineering, conversational design, intent modeling, or NLU.

Responsibilities

Design, configure, and optimize conversational AI agents within Sierra Agent OS.
Build reusable reference models and design patterns for multiple business use cases.
Develop and refine agent experiences across voice, chat, and email channels.
Analyze conversation data and performance metrics to improve accuracy and outcomes.
Create and optimize prompts, workflows, decision logic, and handoff experiences.
Collaborate with platform engineers on multi-LLM orchestration strategies.
Support testing, deployment, monitoring, and continuous improvement of AI agents.
Run simulations and regression tests before releases and review conversations for improvements.
Work with APIs and tools integration for agent calls and failure handling.