Founding Ai/Ml Engineer (Remote)

We are hiring aFounding AI/ML Engineerto architect and ship production-grade AI systems transforming one of the world's largest and least automated industries - construction.This is a product-first AI engineering role focused on multimodal intelligence, document understanding, and agentic workflow automation.You will work directly with the Chief AI Officer and founders to move from low-automation to high-automation mode, where AI agents perform core operational work with light human oversight.DetailsLocation: Philadelphia, PA & New York City, NY & Washington, D.C.Work Model: Hybrid / Remote-first with optional Philly hubEmployment Type: Full-TimeExperience Level: 6+ yearsEquity: Competitive early-employee equityVisa Sponsorship: H-1B availableKey ResponsibilitiesBuild and ship production-grade AI systems used daily by real customersDesign multimodal pipelines for drawings, specs, and construction documentsBuild agentic workflows automating preconstruction tasks:Document intakeExtractionTakeoff supportBid preparationQA workflowsBuild and improve:Retrieval systems (embeddings, reranking, chunking)Evaluation systemsOrchestration layersOptimize model quality, latency, reliability, and cost efficiencyPrototype and iterate quickly on customer-facing AI featuresOwn systems end-to-end (experiment ? deploy ? monitor ? improve)Help shape engineering culture and long-term technical directionRequirements6+ years of engineering experienceExperience at an early-stage, high-growth startupShipped production-grade AI systems to real customersHands-on LLM and/or computer vision experienceRetrieval systems experience (embeddings, chunking, grounding)Agentic workflow experience (tools, APIs, state management, retries, guardrails)Strong backend fundamentals:APIsAsync jobs / queuesDatabasesCloud deploymentMonitoringFull end-to-end ownership mindsetNice to HaveConstruction / AEC exposureMultimodal AI or document intelligence backgroundOCR / segmentation / computer vision experienceExperience converting human-operated workflows into AI product systemsInference optimization or evaluation system expertiseBenefitsMeaningful early-employee ESOP grantEmployer-funded health insurance (Patch model)Team / meal stipendGrowth path to technical leadership (optional management track)#J-*****-Ljbffr

6+ years of engineering experience Experience at an early-stage, high-growth startup Shipped production-grade AI systems to real customers Hands-on LLM and/or computer vision experience Retrieval systems experience (embeddings, chunking, grounding) Agentic workflow experience (tools, APIs, state management, retries, guardrails) Strong backend fundamentals: APIs Async jobs / queues Databases Cloud deployment Monitoring Full end-to-end ownership mindset Nice to Have Construction / AEC exposure Multimodal AI or document intelligence background OCR / segmentation / computer vision experience Experience converting human-operated workflows into AI product systems Inference optimization or evaluation system expertise

Meaningful early-employee ESOP grant Employer-funded health insurance (Patch model) Team / meal stipend Growth path to technical leadership (optional management track) #J-*****-Ljbffr