Senior ML/AI Engineer

MrBeastSan Francisco, CA
Onsite

About The Position

Beast Industries is building a first-of-its-kind consumer membership ecosystem from the ground up, with AI as the core foundation. As a Senior ML/AI Engineer, you will be instrumental in building the AI operational backbone and developing AI-native features for a product expected to reach over 100 million users. This is a hands-on individual contributor role focused on a zero-to-one build where AI-native is the default assumption. You will be responsible for writing infrastructure code, shipping features, and building evaluation systems to ensure quality, working closely with fast-moving product squads. The role involves building AI within a membership app targeted at the MrBeast audience, aiming for a global reach of over 100 million users.

Requirements

  • Shipped ML or AI systems in production for products used by millions.
  • Experience being on-call for a model, not just training one.
  • Deeply integrated modern AI tooling into your workflow, including using coding agents daily and consuming tokens.
  • Built or significantly contributed to eval systems that have caught real regressions.
  • Startup experience to build from zero with a nimble team.
  • Big-tech exposure to understand challenges at consumer scale.
  • Thrive in ambiguity and prefer shipping over process.
  • Prefer to spin up a prototype and demonstrate it rather than run a design review.

Responsibilities

  • Ship AI-native features end-to-end, including recommendation, personalization, ranking, moderation, and agents, by working directly within product squads.
  • Help build and extend the AI operational backbone, encompassing model serving, inference infrastructure, retrieval, and prompt/agent tooling for use by other squads.
  • Own the evaluation of shipped features, both offline and online, to catch quality regressions before they impact users.
  • Make pragmatic decisions regarding foundation models, fine-tuning, RAG, and agent frameworks.
  • Maintain a lean technology stack and tight feedback loops.
  • Operate in an AI-native environment, utilizing tokens, coding agents daily, and shipping features more rapidly than traditional ML workflows.

Benefits

  • Competitive Salary
  • Generous Medical (Blue Cross Blue Shield), Dental, Vision and company-paid Life Insurance
  • Company contributions to employee Health Savings Accounts (HSA)
  • 401k Plan with Safe Harbor company-matching
  • Flexible vacation policy and paid company holidays
  • Company-provided technology package
  • Relocation assistance where applicable, including travel and company-provided housing for the first 90 days
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