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Principal Software Engineer - Simulation Data, Validation & Infrastructure
Irving, TX
…intelligent automation, and rigorous validation. This Principal Engineer role is a hands-on technical leadership position responsible for architecture, critical implementation, engineering…
Added just now
Principal Software Engineer - Robotics & Physical AI Simulation
Irving, TX
This Principal Engineer role is a hands-on technical leadership position responsible for architecture, critical implementation, engineering standards, cross-team alignment, and mentoring.
Added just now
Principal Software Engineer - Digital Twin and Simulation Platform
Irving, TX
This Principal Engineer role is a hands-on technical leadership position responsible for architecture, critical implementation, engineering standards, cross-team alignment, and mentoring.
Added just now
Principal Software Engineer - Agentic AI & Simulation Automation
Irving, TX
This Principal Engineer role is a hands-on technical leadership position responsible for architecture, critical implementation, engineering standards, cross-team alignment, and mentoring.
Added 1 min ago
Solution Architect (AWS / AI)
CapNexus
NY
Partner with the Lead Engineer as a peer: you decide the architecture, and they decide the implementation approach.
Added 5 mins ago
Forward Deployed Solution Engineer – Applied AI FDE
ServiceNow
Remote, United States
It all started when engineer Fred Luddy wrote code that automated a tedious task for his coworker, Phyllis. She cried tears of joy. That moment inspired Fred to build a company that could…
Added 6 mins ago
Lead Fleet Performance Engineer
GE Vernova
Unspecified, PA
The Fleet Performance Engineer for GE Vernova is responsible for monitoring, analyzing, and interpreting the technical performance of the installed fleet to identify abnormal behavior,…
Added 7 mins ago
Software engineer
SEI INVESTMENTS COMPANY
Oaks, PA
Added 7 mins ago
DevOps II / SRE
Robert Half
Philadelphia, PA
We are seeking a DevOps II / Site Reliability Engineer to help build and mature a growing Site Reliability Engineering (SRE) function supporting large-scale digital platforms. This role…
Added 7 mins ago
Senior Engineer, IAM Platform Engineering
AmerisourceBergen
Conshohocken, PA
…technologies. 5. Experience developing solutions using PowerShell, Python, JavaScript, Terraform, REST APIs, or comparable automation technologies. 6. Strong understanding of identity…
Added 7 mins ago
Lead Engineer, IAM Platform Engineering
AmerisourceBergen
Conshohocken, PA
…platforms. 5. Experience developing automation using PowerShell, Python, JavaScript, Terraform, REST APIs, or similar technologies. 6. Strong understanding of identity protocols including…
Added 8 mins ago
AI Data Scientist Intermediate
Geisinger System Services
Danville, PA
Added 8 mins ago
WC
Co-Op, Test Engineer - Transducer (January-June 2027)
Wabtec Corporation
State College, PA
- $25 to $28 USD / hour
Assist Sr. Test Engineer in evaluation, development and implementation of new test systems and protocols
Added 8 mins ago
Cyber Security Engineer (5462)
SMX
Harrisburg, PA
The Cyber Security Engineer will provide security engineering, compliance, and risk management support for cloud-based systems aligned with NIST SP 800-53, FedRAMP, and DoD IL4–6…
Added 8 mins ago
AT
Machine Learning Senior Software Engineer
Akamai Technologies, Inc.
Harrisburg, PA
- $121,400 to $218,600 USD / year
As an ML Senior Software Engineer, you will build and operate systems responsible for model validation, quantization, and safety across the AIC. You'll develop pipelines that scan models…
Added 8 mins ago
Senior Security GRC Engineer, AI & Automation
American Express Global Business Travel
Harrisburg, PA
AmexGBT’s Security GRC team is looking for a talented Senior Security GRC Engineer to design, build, and scale automation and AI-driven solutions that modernize our governance, risk, and…
Added 8 mins ago
Head of Forward Deployed Engineering
Bausch + Lomb
Harrisburg, PA
Bausch + Lomb is seeking a Head of Forward Deployed Engineer (FDE) to turn AI from pilots into production capability across B+L. This is a hands-on builder role embedded in manufacturing,…
Added 8 mins ago
Lead Software Engineer
Highmark Health
Harrisburg, PA
The job is an integral member of an agile software engineer team responsible for building scalable software applications across all digital channels to serve our customers. The position…
Added 8 mins ago
Associate Software Engineer
Highmark Health
Harrisburg, PA
This job is an integral member of an agile software engineer team responsible for building scalable software applications across all digital channels to serve our customers. Responsible for…
Added 9 mins ago
Vice President, Cloud Platform Engineer
SitusAMC
Harrisburg, PA
…Docker, Kubernetes, and familiar with Git development. The Engineer is expected to provide strategy and implement enterprise-scale automation for scalability, performance, security, and…
Added 9 mins ago
AT
Senior Software Engineer
Akamai Technologies, Inc.
Harrisburg, PA
- $121,400 to $218,600 USD / year
You will be developing using Golang/Python involving complex threat detection algorithms in an ultra-high traffic environment. You will be involved in creating both platform and product…
Added 9 mins ago
Senior Telecom Engineer
Maximus
Harrisburg, PA
Maximus is seeking an experienced Senior Telecom Engineer to lead the design, implementation, and optimization of Genesys Cloud solutions. This role is responsible for executing large-scale…
Added 9 mins ago
Lead AI and Data Science Engineer II
Deloitte
Pittsburgh, PA · Mechanicsburg, PA
8+ years of experience with data science - including having a deep knowledge & mastery of Python, machine learning & deep learning, and associated data science packages (e.g., sklearn,…
Added 9 mins ago
Advanced Forward Engineering - Implementation Engineer - Senior
EY
Harrisburg, PA · Pittsburgh, PA · Philadelphia, PA
…and trusted in production. This role is ideal for a seasoned engineer who excels at owning ambiguous problems, making pragmatic tradeoffs, and turning platform capabilities into real…
Added 9 mins ago
Junior Data Engineer
ARAMARK
Philadelphia, PA
We are seeking a Junior Data Engineer who will work hands-on and collaboratively with our enterprise and line of business stakeholders to support the continued evolution of our enterprise…

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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Skills

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

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