[Remote] Principal AI Platform Engineer

Note: The job is a remote job and is open to candidates in USA. MaintainX is the world's leading mobile-first work execution platform for industrial and frontline teams. They are seeking a Principal AI Platform Engineer to own the technical vision for the AI platform, leading architecture and strategic decisions to enhance product features and drive engineering-wide adoption.ResponsibilitiesDefine the Agent / Skill / Tool architecture. Evolve the platform so agents can reason, plan, and collaborate, skills are discoverable and reused across workflows, and tools expose structured, permission-aware access to operational data. Design for progressive autonomy as trust, reliability, and governance matureScale the context graph. Architect the retrieval and knowledge systems that turn 14,000+ digitized equipment manuals, 370,000+ procedures created yearly, and 27M+ annual work orders into customer-specific intelligence with cross-asset reasoningBuild the developer experience. Own agent orchestration, an MCP tool registry, reproducible dev environments, and the observability layer that makes agents trustworthy at scale. Engineers should define agent behavior through schemas and prompts while the platform handles routing, validation, evaluation, and observabilityBuild the evaluation and feedback loop. Design offline and online evaluation systems so every user interaction (accept, refine, override) improves agent performanceDrive cross-division alignment. Partner with product engineering teams across Plant Setup, Maintenance Planning, Maintenance Execution, Reliability Engineering, Parts & Purchasing, and Reporting. Represent MaintainX engineering internally and externallySkills10+ years of software engineering experience, with significant depth in backend systems, distributed architecture, or platform / infrastructure engineering3+ years building ML or LLM-powered systems in production, with real operating experience around evaluation, latency, cost, and reliabilityA 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 adoptionInternal platform experience where your customers are other engineers. You treat developer experience as a product: adoption, documentation, enablement, and ergonomics are first-classStrong Python backend expertise, with experience designing APIs, services, and data pipelinesThe ability to write a clear design document, facilitate a technical decision across teams, and represent engineering externally with credibilityProduction agentic systems: multi-agent orchestration, tool use, skill registriesMCP, LangGraph, LlamaIndex, plus evaluation and observability platforms like Langfuse, LangSmith, or BraintrustRAG pipelines, vector databases, embedding strategies, and knowledge graphs at scaleB2B SaaS, industrial software, IoT / OT, or other domains where AI must operate with high reliability and domain-specific contextBenefitsCompetitive 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.Company OverviewMaintainX provides a CMMS/EAM platform that leverages AI to enhance asset performance and reduce downtime for industrial teams. It was founded in 2018, and is headquartered in San Francisco, California, USA, with a workforce of 501-1000 employees. Its website is https://www.getmaintainx.com.Company H1B SponsorshipMaintainX has a track record of offering H1B sponsorships, with 1 in 2025, 1 in 2024, 1 in 2023, 1 in 2022. Please note that this does not guarantee sponsorship for this specific role.