Hiring: Senior Applied AI Engineer - Applied AI Company: Simplex. Location: New York, NY Job Posted Time: 2026-09-16 07:37:32 Employment Type: On-site Target Skills & Keywords : CV, LLM, Next.js, PostgreSQL, Python, TestNG, TypeScript, Vercel, pgvector About the job Experience: •5+ years building and shipping robust AI products for large-scale, user-facing or data-driven products Required Skills: •In this role, you will •Merchandising intelligence (slow-mover detection, price and promotion recommendation, competition and seasonality signals) •Document understanding (invoice OCR and structured extraction across LLM engines) •Retrieval and ranking (embedding-based product matching on pgvector, catalog dedup, contextual recommendations) •Build agent capabilities on top of our Manager Agent platform — task generation, review workflows, and chat over each store's own data •Build the evaluation harness for both offline and online techniques, designing experiments and metrics (evals, QA playbooks, Langfuse tracing) that provide deep insight into recommendation quality and merchant impact •Own the entire model lifecycle from research to production: data analysis, modeling, evaluation, offline/online testing, and iterative improvement — and build autonomous harnesses that let agent squads explore new problem spaces in parallel •Collaborate cross-functionally with engineers, PMs, and store owners to ensure our AI drives measurable improvements in merchant revenue and hours saved Interested candidates, please apply directly through the job posting on company's career page or try via AI auto apply on this platform. Don't miss this opportunity to join a forward-thinking team!