Senior Search Engineer — AI-Powered Platform

MaintainX; Toronto; On-site; CAD 140,000 - 180,000; Full time

Job summary

MaintainX is seeking an experienced engineer to design, build, and operate a production-grade search platform. You will own indexing, ranking, and AI-facing query layers, collaborating with domain experts to ensure high-relevance results across work orders, assets, and procedures.

The role emphasizes fast iteration, distributed system reliability, and scalable architecture, with on-call duties during business hours and collaboration with global teams.

Qualifications

• Hands-on experience designing, building, and operating production-grade search systems end-to-end.
• Understanding of embeddings, chunking, and retrieval strategies.
• Familiarity with search-specific tuning: analyzers, BM25, shard sizing, cluster health, and relevance optimization.
• Comfort taking systems from implementation to deployment and production operation.

Responsibilities

• Design and build MaintainX’s end-to-end search and retrieval platform — from indexing pipelines and ranking systems to AI-facing query layers.
• Partner with product and domain experts to model search across core entities like work orders, assets, and procedures, ensuring high-relevance results.
• Ship fast, iterate fast, launch early versions, gather feedback, and improve rapidly.
• Operate and optimize distributed systems, ensuring reliability, performance, and scalability under real-world load.
• Drive architectural decisions, balancing correctness, performance, and long-term maintainability.
• Own integrations between search systems and upstream data sources.
• Explore semantic search, vector retrieval, and AI-enhanced relevance using modern ML tooling.
• On-call duties (currently business hours)

Skills

Elasticsearch

OpenSearch

Lucene

Solr

End-to-end search

Embeddings retrieval

BM25 tuning

Production operations

English communication

AI tools (GPT/Copilot/Cursor)

Tools

GPT

Copilot

Cursor

Job description

MaintainX is seeking an experienced engineer to design, build, and operate a production-grade search platform. You will own indexing, ranking, and AI-facing query layers, collaborating with domain experts to ensure high-relevance results across work orders, assets, and procedures.

The role emphasizes fast iteration, distributed system reliability, and scalable architecture, with on-call duties during business hours and collaboration with global teams.