Principal AI Research Engineer - World Models

Reflex Robotics

$130K — $180K *
Information Technology
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • Experience architecting and training large-scale video/world models (e.g., Sora, Veo)
  • Proven ability to turn generative models into controllable simulators
  • Background in building data and evaluation stacks for world modeling
  • Familiarity with achieving high success rates in robotic deployments
  • Experience in robotics or related engineering fields

Responsibilities

  • Architect and train advanced video and world models
  • Develop generative models into controllable simulations
  • Build and manage data and evaluation systems
  • Ensure operational success rates meet or exceed 99.99%
  • Collaborate with a small team to shape product development

Benefits

  • High ownership and equity potential
  • Opportunity to influence product direction
  • Work with cutting-edge robotics technology
  • Join a company with a strong business foundation
  • Be part of a team focused on solving real-world problems
Full Job Description
What We're Looking For

We're still a small team-which means high ownership, high equity, and the chance to shape the product from the ground up.

VLAs and other great "base policies" for robotics achieve ~80% success rates, but in real robot deployments, it's essential to achieve 99.99% success rates. We can't ask our customers to tolerate our robots packing three socks into a bin instead of four, or swapping shipping labels between two packages-not even once!

You should apply for this role if:
  • You've architected and trained large-scale video/world models (ex. Sora, Veo)
  • You've turned generative models into controllable simulators: action-/state-conditioned rollouts
  • You've built the data & eval stack for world modeling to quantify downstream policy success

You'd be joining a company that already has a solid core business-with working hardware, delighted customers, and profitable unit economics. Reflex is de-risked enough to see the hazy outlines of success, but still small enough that there's enormous upside up for grabs.

Come Join Us

This is a rare opportunity to help build a flagship robotics company from the ground up-and to do work that will truly matter, reshaping what people believe is possible in robotics.

We love to see the things you've worked on. Have a portfolio or insane project you've worked on? Share it. We're looking for people who push past the status quo, are passionate at work and in their own time-we're looking for people who want to win.

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