Member of Technical Staff - Post-Training and RL

xAI

• $180K — $500K+*
Enterprise Technology
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • Strong belief in the importance of truth-seeking AI.
  • Passion for developing advanced models using post-training and reinforcement learning techniques.
  • Experience as a power user of AI models with a focus on pushing boundaries in reinforcement learning and alignment.
  • Previous experience with post-training, RLHF, or widely used trained models is advantageous but not mandatory.
  • Commitment to quality work and success in merit-based environments.

Responsibilities

  • Tackle critical challenges in post-training and reinforcement learning.
  • Work on reward modeling and preference optimization (RLHF/DPO).
  • Enhance reasoning, truthfulness, and real-world capabilities through RL strategies.
  • Receive clarity on project details before accepting the offer.
  • Collaborate with teams to push the limits of AI model usage.

Benefits

  • Equity in the company.
  • Comprehensive medical, vision, and dental coverage.
  • Access to a 401(k) retirement plan.
  • Short and long-term disability insurance.
  • Life insurance and various discounts and perks.
Full Job Description
ABOUT THE ROLE:
  • You will work on the most critical post-training and reinforcement learning challenges at any given time - including reward modeling, preference optimization (RLHF/DPO), and RL for improving reasoning, truthfulness, and real-world capabilities.
  • You will get clarity on your first project before an offer.
BASIC QUALIFICATIONS:
  • You believe truth-seeking AI is the most important and challenging problem.
  • You are obsessed about building incredibly useful models through post-training and RL techniques.
  • You are a power user of AI models and eager to push the boundaries of what's possible with reinforcement learning and alignment methods.
  • If you previously worked on post-training, RLHF, or trained models used by millions of people it's a big plus, but relevant experience is not required.
  • You take pride in your work and thrive in meritocratic environments.
COMPENSATION AND BENEFITS:

$180,000 - $600,000 USD

Base salary is just one part of our total rewards package at SpaceXAI, which also includes equity, comprehensive medical, vision, and dental coverage, access to a 401(k) retirement plan, short & long-term disability insurance, life insurance, and various other discounts and perks.

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