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Added 3 mins ago
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Senior Principal Design Verification Engineer
Microsoft
WA · CA · TX · NC · OR · Redmond, WA · Mountain View, CA · Austin, TX · Raleigh, NC · Hillsboro, OR · Redmond · Mountain View · Austin · Raleigh · Hillsboro
- $165,600 to $331,200 USD / year
As a Senior Principal Design Verification Engineer on the AISiE SoC Design Verification team, you will architect and drive complex pre-silicon verification, including SoC security…
Added 23 mins ago
Mechanial Engineer (R&D Engineer 2)
Los Alamos National Laboratory
Los Alamos, NM
Proven experience in mechanical engineering or STEM scientific disciplines. Candidates must have the ability to read and interpret mechanical engineering design drawings. Experience with…
Added 23 mins ago
Neutron, Gamma, and Particle Sensing Systems Engineer (R&D Engineer 4)
Los Alamos National Laboratory
Los Alamos, NM
Proficiency in modeling, simulation, and data analysis tools relevant to spaceflight system design, development, and performance
Added 23 mins ago
R&D Engineer 3
Los Alamos National Laboratory
Los Alamos, NM
Los Alamos National Laboratory is seeking an experienced mechanical engineer to join the Space Instrument Realization Group (ISR-5). In this role, you will lead the design, analysis,…
Added 23 mins ago
Mechanical Engineer (R&D Engineer 2)
Los Alamos National Laboratory
Los Alamos, NM
…scientific disciplines. Candidates must have the ability to read and interpret mechanical engineering design drawings. Knowledge of geometrical and physical optics, including optical…
Added 23 mins ago
Mechanical Engineer (R&D Engineer 2)
Los Alamos National Laboratory
Los Alamos, NM
Proven experience in mechanical engineering or STEM scientific disciplines. Candidates must have the ability to read and interpret mechanical engineering design drawings. Experience with…
Added 23 mins ago
Structural Dynamics Engineer (R&D Engineer 2/3)
Los Alamos National Laboratory
Los Alamos, NM
We are seeking an engineer with a passion for structural dynamics to join the testing development and structural analysis (TDSA) team. Our mission is to improve dynamic analysis of weapons…
Added 34 mins ago
Principal Radar Modeling Simulation & Analysis Systems Engineer
Northrop Grumman
Baltimore, MD
Northrop Grumman Mission System’s Engineering and Sciences (E&S) Baltimore and Partnered Sites (BaPs) Division is seeking a Principal Radar Modeling Simulation & Analysis Systems Engineer…
Added 34 mins ago
Principal Modeling Simulation and Analysis Systems Engineer
Northrop Grumman
Baltimore, MD
We are looking for a Principal Modeling Simulation and Analysis Systems Engineer to join our team in Baltimore, MD. This position requires 100% on-site work.
Added 1 hour ago
Engineer IV
Astrion
Redstone Arsenal, AL
Must possess a Bachelor's Degree in the designated technical area of specialization from an accredited* university and 9 years of combined engineering and technical experience, including 6…
Added 1 hour ago
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Research Engineer - Data Eval
Calder
Redwood City, CA
- $199,000 to $483,000 USD / year
- Sharp mathematical foundations and real depth in at least one area near the heart of physical AI evaluation, whether that's reward modeling for embodied agents (including reward hacking…
Added 2 hours ago
Industrial Engineer
Avago Technologies U.S. Inc.
United States
Capacity & Simulation Modeling: Generate, maintain, and refine capacity models and discrete-event process simulations to forecast tool utilization, product cycle times, and output limits.
Added 3 hours ago
Senior GNC Engineer
Kastel Staffing
Moorpark, CA
We are seeking a Senior GNC Engineer IV with extensive experience in drone flight dynamics, control theory, state estimation, and autonomous flight systems. In this role, you will lead the…
Added 3 hours ago
Senior GNC Engineer
Kastel Staffing
Huntsville, AL
We are seeking a Senior GNC Engineer IV with extensive experience in drone flight dynamics, control theory, state estimation, and autonomous flight systems. In this role, you will lead the…
Added 4 hours ago
Senior Firmware Engineer, Embedded Platform
Firestorm
United States
Firestorm Labs is seeking an experienced and driven Firmware Engineer who has a specialized focus in embedded platforms. In this role, you will support the development, integration, and…
Added 4 hours ago
Principal Software Engineer - Digital Twin and Simulation Platform
Irving, TX
At Caterpillar, technology has a purpose: to solve our customers' toughest challenges. Construction autonomy and Physical AI require trusted digital twins, high-fidelity simulation,…
Added 4 hours ago
Design Engineer - Pride
Pride Mobility Products Corp.
Duryea, PA
Added 4 hours ago
Process Engineer
Boose Aluminum Foundry Co., Inc.
Reamstown, PA
…critical applications across defense, medical, energy, industrial, and transportation markets. Our team combines traditional foundry expertise with modern engineering technologies,…
Added 5 hours ago
Sr. Model Engineer, Imagine
SpaceXSI
Palo Alto, CA
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…
Added 5 hours ago
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Staff Digital Signal Processing Engineer
Impulse Space
Redondo Beach, CA
- $145,000 to $185,000 USD / year
Use MATLAB and Simulink for modeling, simulation, and verification of DSP processing chains
Added 5 hours ago
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Spacecraft Dynamics Engineer
Apex Technology, Inc.
Los Angeles, CA
- $136,000 to $220,000 USD / year
Apex is looking for a Spacecraft Dynamics Engineer to own dynamic analysis and vehicle response across our spacecraft. This role is responsible for predicting and validating how our…
Added 5 hours ago
Principal Systems Engineer - P5
Boston Scientific
Maple Grove, MN · Maple Grove
Develop and apply analytical methods, including modeling, simulation, mathematical analysis, and system characterization, to solve complex engineering problems and drive corrective actions.
Added 5 hours ago
Principal Systems Integration & Test Engineer - P5
Boston Scientific
Maple Grove, MN · Maple Grove
Develop and apply analytical methods, including modeling, simulation, mathematical analysis, and system characterization, to solve complex engineering problems and drive corrective actions.
Added 5 hours ago
Engineer II, Manufacturing
Careers | ElDorado National California Inc
Riverside, CA
Skills in computer simulation, cost estimation, design optimization, design review, engineering analysis & design, feasibility study, mathematical analysis & modeling, prototyping, quality…
Added 5 hours ago
Electrical Engineer - Electrical Component
GE Precision Healthcare LLC
United States
Leading design efforts with Electrical CAD and Simulation tools

SpaceXSI

Sr. Model Engineer, Imagine

Palo Alto, CA, United States

$220,000 - $357,000 USD

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Job details

Pay: $220,000 - $357,000 USD
Posting language: English
Posted: Nov 6, 2026

Original job description

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today, SpaceX is actively developing the technologies to make this possible, with the ultimate goal of making life multiplanetary and expanding consciousness to the stars.

SpaceXSI is building Super Intelligence to help humanity understand the universe. Our teams are building the full Super Intelligence stack: from our Colossus supercomputers, to Grok models, to our suite of applications, including Grok Bot, Grok Build, Grok Imagine, Grok Voice, and X. We're creating a powerful flywheel where more compute trains better models, better models power more useful products, and what we learn from people using those products shapes what we build next.

SR. MODEL ENGINEER, IMAGINE

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 pre-training 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:

Experience writing production-quality code in Python, PyTorch, JAX, Rust, or C++
Experience 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

PREFERRED SKILLS AND EXPERIENCE:

Experience in audio/speech processing or music/audio generation experience is a plus where it supports video
Experience in data-driven experiment designs, systematic analysis, and iterative model debugging
Experience developing or working with large-scale distributed machine learning systems
Experience with leading studies that significantly improve neural network capabilities and performance through better data or modeling
Ability to deliver optimal end-to-end user experiences
Hands-on contributor with initiative, excellence, strong work ethic, prioritization skills, and excellent communication
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
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:

$220,000 - $357,000 USD

Base salary is just one part of our total rewards package at SpaceXSI, 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. SpaceXSI is an equal opportunity employer. For details on data processing, view our Recruitment Privacy Notice.

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More about this job

Skills

Editing
BASIC
Python
PyTorch
Rust
C++
Content creation
Debugging
Machine learning
Prioritization
Communication skills
Apache Spark

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