Principal AI Platform Engineer

10+ years of software engineering experience, with significant depth in backend systems, distributed architecture, or platform / infrastructure engineering.

3+ years building ML or LLM-powered systems in production, with real operating experience around evaluation, latency, cost, and reliability.

A track record of company-wide technical leadership at the Principal level. You have defined architecture for systems used by multiple teams, influenced engineering strategy beyond a single division, and held leaders accountable for adoption.

Internal platform experience where your customers are other engineers. You treat developer experience as a product: adoption, documentation, enablement, and ergonomics are first-class.

Strong Python backend expertise, with experience designing APIs, services, and data pipelines.

The ability to write a clear design document, facilitate a technical decision across teams, and represent engineering externally with credibility.

Nice to have:

Production agentic systems: multi-agent orchestration, tool use, skill registries.

MCP, LangGraph, LlamaIndex, plus evaluation and observability platforms like Langfuse, LangSmith, or Braintrust.

RAG pipelines, vector databases, embedding strategies, and knowledge graphs at scale.

B2B SaaS, industrial software, IoT / OT, or other domains where AI must operate with high reliability and domain-specific context.

Competitive base, equity, and variable comp aligned to role and location.

Equity in a high-growth, post-Series D company.

Day-1 health, dental, and vision coverage.

Unlimited PTO, which we actually take.

Flexible token limits.

Work from our San Francisco, Toronto, or Montreal hubs, or remote across the United States and Canada.

We hire for what you have shipped, not what your title was. We promote quickly when people deliver and have honest conversations early when fit isn't right. Output wins. If you would rather shape the architecture that every other engineer builds on than manage headcount, this is the right room.

MaintainX is committed to building a diverse and inclusive team. We welcome applications from people of all backgrounds. If you're excited about this role but don't meet every qualification, we encourage you to apply. #LI-Remote

Our mission is to deliver one platform for maintenance, repair & operations teams to keep the physical world running. We believe the greatest asset in any organization is the people. That’s why we built an intuitive, mobile-first solution to help boost productivity and collaboration across teams and locations.

MaintainX is committed to creating a diverse environment. All qualified applicants will receive consideration for employment without regard to race, colour, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.