Job Description
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 employees are expected
to have strong communication skills. They should be able to concisely and
accurately share knowledge with their teammates.
ABOUT THE ROLE:
As a multimodal engineer on the Imagine Model Team, you will develop
cutting-edge AI experiences beyond text, with a strong focus on enabling
high-fidelity understanding and generation across image and video modalities,
while also incorporating audio where it enhances visual content (e.g.,
synchronized audio for video). Responsibilities span data curation, modeling,
training, inference serving, and product integration, covering both pretraining
and post-training phases. You will collaborate closely with product teams to
push model frontiers and deliver exceptional end-to-end user experiences.
RESPONSIBILITIES:
* Create and drive engineering agendas to advance multimodal capabilities, with
emphasis on image and video generation, editing, understanding,
controllable/long-horizon synthesis, agentic planning, RL training, and world
simulation (including audio integration for richer video experiences).
* Improve data quality through annotation, filtering, augmentation, synthetic
generation, captioning, and in-depth data studies, particularly for visual
and audio data.
* Design evaluation frameworks, metrics, benchmarks, evals, and reward models
tailored to image/video/audio quality and coherence.
* Implement efficient algorithms for state-of-the-art model performance,
including real-time inference, distillation, and scalable serving for visual
content.
* Develop scalable data collection and processing pipelines for multimodal
(primarily image/video-focused) datasets.
* Collaborate cross-functionally to integrate AI solutions into production and
rapidly iterate based on user feedback.
BASIC QUALIFICATIONS:
* Track record in leading studies that significantly improve neural network
capabilities and performance through better data or modeling.
* Experience in data-driven experiment designs, systematic analysis, and
iterative model debugging.
* Experience developing or working with large-scale distributed machine
learning systems.
- Ability to deliver optimal end-to-end user experiences.
- Hands-on contributor with initiative, excellence, strong work ethic,
prioritization skills, and excellent communication.
PREFERRED SKILLS AND EXPERIENCE:
* Experience in SFT, RL, evals, human/synthetic data collection, or agentic
systems.
* Proficiency in Python, JAX/XLA, PyTorch, Rust/C++, Spark, Ray, and related
large-scale frameworks.
* Domain expertise in multimodal applications such as graphics engines,
rendering techniques, image/video understanding and generation, world models,
real-time simulation, or controllable/long-horizon visual content creation
(audio/speech processing or music/audio generation experience is a plus where
it supports video).
* Experience with agentic RL training, controllable/long-horizon generation, or
multimodal agents that reason and act across modalities (especially in visual
domains).
COMPENSATION AND BENEFITS:
$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. For details on data processing, view
our Recruitment Privacy Notice [
Job Tags
Full time, Temporary work