Principal AI Architect: Agentic AI Platform

Harnham; Toronto; Hybrid; CAD 200,000 - 220,000; Full time

Benefits offered by this job

Flexible hybrid working environment

Competitive CAD 200k–220k salary

Job summary

Harnham is seeking a seasoned AI Architect to define the technical foundations of a rapidly evolving AI platform. You will lead the design of agentic AI architectures, establish standards, and drive scalable, production-ready products that transform content and knowledge workflows.

The role involves mentoring engineers, partnering with ML, product, and engineering teams, and evaluating new agentic AI advancements to deliver measurable impact across the organization.

Qualifications

• 10+ years of software engineering experience delivering production AI systems at Staff/Principal level.
• Proven experience building and shipping agentic AI products, including multi-agent systems and agent execution environments.
• Deep expertise in AI evaluation methodologies and regression testing.
• Strong experience with Retrieval-Augmented Generation (RAG) and agentic search architectures.
• Strong understanding of large language models, retrieval systems, and agent design patterns.
• Expertise in large-scale cloud-based AI infrastructure and deployment pipelines.
• Proficient Python development and hands-on experience with agent frameworks.
• Ability to influence engineering organizations through architecture and leadership.

Responsibilities

• Lead design and evolution of the agentic AI architecture and scalable infrastructure.
• Build AI infrastructure across evaluation, testing, observability, tracing, and production environments.
• Design agent orchestration layers, multi-agent workflows, and memory/planning systems.
• Collaborate with engineering to review architecture and mitigate risks.
• Establish AI quality framework including datasets, testing, and release gates.
• Mentor senior engineers through architecture reviews and leadership activities.
• Evaluate emerging AI advancements and apply to scalable solutions.

Skills

Senior software engineering

AI architecture

Agentic AI

LLM orchestration

RAG architectures

Python development

Distributed systems

Mentoring engineers

Cloud architecture

Tools

LangChain

LangGraph

Microsoft Agent Framework

AWS

Job description

Harnham is seeking a seasoned AI Architect to define the technical foundations of a rapidly evolving AI platform. You will lead the design of agentic AI architectures, establish standards, and drive scalable, production-ready products that transform content and knowledge workflows.

The role involves mentoring engineers, partnering with ML, product, and engineering teams, and evaluating new agentic AI advancements to deliver measurable impact across the organization.