Senior AI-Driven Search Systems Engineer

MaintainX; Canada; On-site; CAD 130,000 - 210,000; Full time

Benefits offered by this job

Flexible time off

Competitive salary and equity

Training and development investments

Comprehensive healthcare coverage

Job summary

MaintainX is seeking an experienced Platform Engineer to design and operate a production-grade search and retrieval platform. You will model search across assets and work orders, ensuring highly relevant results while collaborating with product and domain experts.

You will own end-to-end indexing, query execution, and AI-enhanced relevance, advancing semantic search capabilities and scalable backend infrastructure.

Qualifications

• Hands-on experience designing, building, and operating production-grade search systems end-to-end using Elasticsearch/OpenSearch/Lucene/Solr or similar.
• Experience taking systems from implementation to deployment across backend services and data pipelines.
• Familiarity with analyzers, BM25, shard sizing, cluster health, and relevance optimization.
• Understanding embeddings, chunking, and retrieval strategies for semantic search.
• Expert English communication to lead platform engineering managers and align with stakeholders.
• Experience shipping AI-powered or LLM-integrated backend systems.
• Ability to evaluate and improve search relevance via qualitative and quantitative metrics.
• Comfort with AI tools like GPT, Copilot, or Cursor to boost productivity.
• Understanding of multi-tenancy, ACLs, and secure index partitioning.
• Experience building observability and success metrics into systems.

Responsibilities

• Design and build MaintainX’s end-to-end search and retrieval platform, from indexing to AI-facing query layers.
• Partner with product and domain experts to model search across core entities, ensuring high-relevance results.
• Ship fast, iterate fast, launch early versions, gather feedback, and improve rapidly.
• Operate and optimize distributed systems for reliability, performance, and scalability.
• Drive architectural decisions balancing correctness 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

Distributed systems

Search relevance tuning

Machine learning tooling

Backend services

Data pipelines

Observability

Technical leadership

English proficiency

Tools

Elasticsearch

OpenSearch

Lucene

Solr

Job description

MaintainX is seeking an experienced Platform Engineer to design and operate a production-grade search and retrieval platform. You will model search across assets and work orders, ensuring highly relevant results while collaborating with product and domain experts.

You will own end-to-end indexing, query execution, and AI-enhanced relevance, advancing semantic search capabilities and scalable backend infrastructure.