Full Stack AI Engineer

AI Lead / Founding AI Engineer - Buildors (PlanEstimate Initiative)CompanyBuildors is building the Everything Construction App"”a vertically integrated platform covering estimating, project management, procurement, CRM, scheduling, and financial controls for contractors. AI is not a feature at Buildors; it is the backbone.Your first mission will be PlanEstimate, our AI-powered estimating engine. From there, you will architect and deploy AI across every major Buildors module.About PlanEstimate (Your First Assignment)PlanEstimate converts PDF construction blueprints into CSI-coded, line-item cost estimates covering labor, materials, quantities, units, and markup. No CAD. No manual takeoffs. PDFs only.Construction estimating today is slow, error-prone, and a major cause of cost overruns and delays. PlanEstimate replaces manual blueprint reading with an AI pipeline combining OCR, computer vision, and structured cost mapping, producing editable, industry-standard estimates in minutes instead of days.PlanEstimate is live as a concept and prototype. You will turn it into a production-grade AI system and then replicate the AI framework across Buildors.Role OverviewWe are hiring a Founding AI Engineer / Head of AI (initially contract, path to full-time, equity, or co-founder).You will:Own AI strategy across Buildors end-to-endLead development of PlanEstimate as the first flagship AI productDesign reusable AI infrastructure for estimating, scheduling, procurement, compliance, and forecastingThis is a hands-on builder role, not research-only. You will write production code, ship features, and define architecture.Core Responsibilities1. PlanEstimate - AI Blueprint-to-Estimate EngineBuild the full pipeline to ingest PDF construction drawingsImplement OCR for notes, dimensions, legends, and calloutsImplement object/symbol detection for architectural, electrical, plumbing, and equipment symbolsMap detected elements to CSI MasterFormat cost codesGenerate structured estimates: quantities, units, labor, materials, markupEnable user overrides and learning feedback loops2. AI Systems Architecture (Platform-Wide)Design reusable AI services usable across Buildors modulesDefine model orchestration, inference pipelines, and data flowsEstablish standards for AI outputs feeding business logic and UXEnsure scalability for real-world contractor usage (large PDFs, many users)3. Backend & API DevelopmentBuild AI-driven backend services (Python preferred: FastAPI/Flask)Expose clean APIs for upload, inference, review, and editingIntegrate AI outputs with Buildors' estimating and project systemsDesign data models for plans, detections, estimates, and revisions4. Frontend IntegrationSupport frontend workflows (React/TypeScript)Enable plan viewing, overlays, and estimate-to-drawing traceabilityEnsure fast, intuitive review and editing experiences5. Cloud, DevOps, and MLOpsDeploy on AWS or GCP with Docker and optional KubernetesDesign GPU usage strategy for inference and trainingImplement CI/CD pipelinesEstablish annotation, retraining, and model evaluation workflows6. Leadership & OwnershipWork directly with the founder on product and AI roadmapTranslate construction workflows into AI logicSet engineering standards as the first AI hireGrow into Head of AI / Technical Co-Founder if successfulRequired QualificationsArea RequirementFull-Stack Engineering3+ years building production web apps end-to-endAI / ML IntegrationReal-world experience shipping ML systemsComputer VisionObject detection (YOLO or similar), image processingOCRTesseract, EasyOCR, or equivalentBackendPython, APIs, data modelingFrontendReact + TypeScript integration experienceCloudAWS/GCP, Docker; Kubernetes a plusOwnershipComfortable owning systems without hand-holdingStrongly PreferredConstruction tech / AEC exposureFamiliarity with CSI MasterFormatStartup or zero-to-one product experienceMLOps, labeling pipelines (Label Studio or similar)Leadership ambition (this grows into a team)Compensation & StructureInitial contract (paid, milestone-based)Fast path to full-timeEquity or co-founder discussion for the right personRemote-friendly, outcome-drivenWhy This Role MattersYou are not joining an AI experiment. You are defining how AI operates across a multi-product construction platform with real customers and revenue. PlanEstimate is only the beginning"”estimating, procurement, scheduling, forecasting, and compliance all follow.This role has technical authority, product influence, and ownership upside.One-line summary: This is a rare chance to architect and lead AI across a real construction SaaS platform, starting with PlanEstimate and scaling into a foundational leadership role at Buildors.Job Types: Full-time, Part-time, ContractPay: $50, $89,321.54 per yearWork Location: Remote

Created: 2026-01-05