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xAI · 5 months ago

Member of Technical Staff - Multimodal Post-training

Palo Alto, CA

Full-time

Onsite

Mid Level

$180K/yr - $440K/yr

xAI is dedicated to creating AI systems that enhance human understanding and knowledge. They are seeking a Member of Technical Staff to build the next generation of Multimodal Grok, focusing on reasoning and tool usage to solve complex problems across the LLM stack.

Artificial Intelligence (AI)Foundational AIGenerative AIInformation TechnologyMachine Learning

Growth Opportunities

H1B Sponsor Likely

Responsibilities

Build the next generation of Multimodal Grok that excels at reasoning, tool usage to solve challenging problems

Work across the LLM stack (pre-training, SFT, RL) to deliver the strongest model for end users

Qualification

Large language modelsReinforcement learningData processingTraining pipelinesCommunication

Required

Strong communication skills

Ability to concisely and accurately share knowledge with teammates

Experience or publications in (multimodal) large language models (data / training algorithm / architecture)

Exceptional engineering skills to iterate quickly on the data processing and training pipelines

Strong understanding of large language model and data

Deep knowledge of reinforcement learning techniques

Benefits

Equity

Comprehensive medical, vision, and dental coverage

Access to a 401(k) retirement plan

Short & long-term disability insurance

Life insurance

Various other discounts and perks

Company

xAI

XAI is an artificial intelligence startup that develops AI solutions and tools to enhance reasoning and search capabilities.

Founded in 2023

Palo Alto, California, USA

11-50 employees

https://x.ai

H1B Sponsorship

xAI has a track record of offering H1B sponsorships. Please note that this does not guarantee sponsorship for this specific role. Below presents additional info for your reference. (Data Powered by US Department of Labor)

Distribution of Different Job Fields Receiving Sponsorship

Represents job field similar to this job

Trends of Total Sponsorships

2025 (1)

Funding

Current Stage

Late Stage

Total Funding

$42.73B

Key Investors

Neptune Digital AssetsSpaceXMorgan Stanley

2026-01-06Series E· $20B

2025-12-11Secondary Market· $0.3M

2025-07-13Corporate Round· $5.32B

Leadership Team

Greg Yang

Co-Founder

Yuhuai Wu

Co-Founder

Recent News

Tech Xplore

Grok created three million sexualized images, research says

2026-01-24

Digital Journal

Musk’s Grok created three million sexualized images, research says

2026-01-23

Mashable

Grok is producing millions of sexualized images of adults and children

2026-01-23

Company data provided by crunchbase