Principal Machine Learning Engineer at Toast
Toast, Inc.
Quick summary
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How this pay compares to similar roles
This role pays less than 74% of similar roles. Most pay $188,625–$253,000 — the shaded band above. At the midpoint, this role pays about $195k versus about $221k for comparable roles.
Based on 240 similar postings.
Employer
HubSpot is an AI-powered customer relationship management (CRM) platform that unifies marketing, sales, customer service, and operations.
HubSpot currently has 5 open roles on FindRole.
Listed pay typically runs $155,900–$233,900 across 5 roles with salary data.
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At a glance
As a Senior Machine Learning Engineer on HubSpot's Agent Platform team, you will be part of the Breeze Studio project, focusing on building and improving AI agents that operate within HubSpot’s CRM system. Your daily tasks include designing experiments to enhance agent performance, developing evaluation infrastructure, optimizing large language model (LLM) inference for efficiency and cost-effectiveness, and collaborating with product teams to ensure high-quality models are deployed. You will work closely with LLM vendors like OpenAI, translating customer quality issues into actionable ML solutions. The role requires strong Python skills, experience with frameworks such as PyTorch, VLLM, and DSPy, and the ability to operate in an early-stage environment with significant autonomy and impact. This strategic position is crucial for HubSpot’s AI-first CRM direction, offering unique challenges at the forefront of LLM capabilities.
What you'll do
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