CareerPlan

Senior Machine Learning Engineer, New Verticals Agentic Foundations

San Francisco, CAFull-time$168k2026-10-13 → 2026-11-11
Hybrid

Core

Build and refine eval-driven loops to improve flagship consumer agents (e.g., Ask Assistant) and launch new agentic experiences for Merchants and Dashers.

Role type

Senior Machine Learning Engineer (Agentic Foundations)

Builds

Production-ready AI agents for consumer, merchant, and delivery partner use cases

Domain

Food delivery / Retail logistics / Generative AI

Deliverable

production ML models

Required skills

LLM-based agent development, evaluation harness design, post-training/fine-tuning of open-weights models, small language models (SLMs), NLP, Python, PyTorch/TensorFlow

Preferred skills

Experience with tool use, context management, prompting, guardrails, SFT, preference optimization, RL

Technologies

PyTorch, TensorFlow, Open-weights models, SLMs

Responsibilities

Build and refine eval harnesses to optimize agent quality and cost; Run experiments to balance quality, latency, and cost; Launch new agents from exploration to production; Develop agentic memory and product representations; Define ML-driven strategy for grocery and retail delivery

Seniority

Senior, hands-on IC