Senior Estimator

TL;DR

Senior Estimator (AI/data & product QA): Evaluate AI-generated construction scopes, drawings, and specifications to ensure outputs are correct, complete, and trustworthy for pre-construction teams with an accent on evidence-based QA, labeled examples/standards, and turning recurring failure modes into actionable requirements. Focus on plan-reading across architectural/structural/civil/MEP documents, documenting reasoning with source citations, and supporting model/product improvement through high-quality ground truth.

Company

hirify.global builds AI products that help contractors make faster, more confident pre-construction decisions.

What you will do

• Evaluate AI-generated scopes, drawing/spec conflicts, source links, and customer-feedback triage against real project documents.
• Determine whether outputs are correct, incomplete, misleading, or inapplicable, and document reasoning with clear source evidence.
• Create and maintain labeled examples, reviewer guidance, and quality thresholds for product evaluation and model improvement.
• Read and interpret plans, specifications, addenda, RFIs, and related documents across the estimating workflow.
• Surface recurring failure modes, edge cases, and gaps, then help engineering and product teams convert them into actionable requirements.
• Define schemas and standards for scopes, inclusions/exclusions, risks, assemblies, and trade packages; support pilots by reviewing output quality and estimating implications.

Requirements

• 5+ years of estimating or pre-construction experience across commercial, industrial, civil, MEP, or similarly complex projects.
• Excellent plan-reading skills across architectural, structural, civil, and MEP drawings, with confidence navigating specifications, addenda, and RFIs.
• Strong working knowledge of CSI divisions, work breakdown structures, cost codes, assemblies, and trade-package workflows.
• Sound analytical judgment and exceptional attention to detail when distinguishing plausible vs correct answers.
• Clear written communication: explain issues, cite relevant sources, and document standards another reviewer can apply consistently.
• Experience with estimating/takeoff tools such as ProEST, Bid2Win, PlanSwift, STACK, Bluebeam, or comparable software.

Culture & Benefits

• Hybrid work setup based in Toronto.
• Estimator judgment is treated as a product input, with a strong evidence and explainability bar.
• AI is used to move faster while maintaining human validation and practical value for contractors.
• Collaborative work across construction expertise, engineering, product, and customer teams.