Search Systems Engineer - Expert

Mercor; Toronto; On-site; CAD 90,000 - 130,000; Full time

Job summary

Mercor is seeking engineers who have shipped production search systems and are deeply engaged with agentic search concepts.

We want to hear how you evaluate search quality, measure impact, and justify tradeoffs in real, messy production environments. Expect a 25‑minute conversational interview; there is a paid 30‑minute follow-up if you stand out, at $200 for your time, paid on completion.

Qualifications

• Candidates who have shipped production search systems and understand agentic search.
• Experience quantifying impact and improvements in live systems.
• Proven ability to design for relevance and retrieval quality in real user contexts.

Responsibilities

• Discuss how you think about search quality, evaluation, and tradeoffs.
• Share war stories with concrete, messy examples from real systems.

Skills

Shipped production search systems

Agentic search design

Relevance / retrieval optimization

Quantifying impact & improvements

Scaling data infrastructure for search

Job description

We're looking for engineers who have shipped production search systems (especially agentic ones now that we're in the era of LLMs and agents) and are thinking hard about the requirements and optimizations of those systems.

You've probably:

• Owned relevance or retrieval on a system real users depended on

• Decided how to quantify impact and improvements with these systems.

• Built out systems related to agentic search.

• Scaled data infrastructure to power modern search systems.

This is a 25-minute conversational interview. No coding, no take-home. We want to hear how you actually think about search quality, evaluation, and the tradeoffs you've made in real systems. Bring war stories — the messier and more specific, the better.

If your interview stands out, we'll follow up with a paid 30-minute live conversation with our team — $200 for your time, paid on completion of the call.