Member of Technical Staff, Pre-training Data Scaling

About xAI

xAI’s mission is to create AI systems that can accurately understand the universe and aid humanity in its pursuit of knowledge. Our team is small, highly motivated, and focused on engineering excellence. This organization is for individuals who appreciate challenging themselves and thrive on curiosity. We operate with a flat organizational structure. All employees are expected to be hands‑on and to contribute directly to the company’s mission.

Leadership is given to those who show initiative and consistently deliver excellence. Work ethic and strong prioritization skills are important. All engineers are expected to have strong communication skills. They should be able to concisely and accurately share knowledge with their teammates.

The pre‑training data team at xAI is dedicated to crafting the ultimate data recipe for training an omni‑model that unlocks the universe’s secrets through text, image, video, and audio. To achieve this vision, we’re seeking visionary engineers with deep expertise in multimodal pre‑training data.

• Python
• Spark
• Ray

The role is based in the Bay Area [San Francisco and Palo Alto]. Candidates are expected to be located near the Bay Area or open to relocation.

• Collaborate with the crawling team to discover and source datasets.
• Architect pipelines to transform datasets at petabyte scales with efficiency and precision.
• Develop robust and diverse evaluations for pre‑training models.
• Craft insightful experiments to assess dataset performance.
• Innovate the recipe for scaling pre‑training data to new frontiers.

• Expertise in ML and large model scaling, with familiarity across all kinds of scaling laws.
• Strong ability to design ML experiments.
• Familiarity with state‑of‑the‑art techniques for curating AI training data for text, image, audio, and video modalities.
• Strong engineering abilities in Spark, Ray, and other frameworks for large‑scale data processing.

After submitting your application, the team reviews your CV and statement of exceptional work. If your application passes this stage, you will be invited to a 15‑minute interview (“phone interview”) during which a member of our team will ask some basic questions. If you clear the initial phone interview, you will enter the main process, which consists of four technical interviews:

Our goal is to finish the main process within one week. All interviews will be conducted via Google Meet.

$180,000 – $440,000 USD

Base salary is just one part of our total rewards package at xAI, 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.

xAI is an equal opportunity employer.

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