Targeted start date: Immediately. Relocation provided.

We are at the forefront of developing advanced humanoid robots designed for household use. Our mission is to create an abundant supply of labor via safe, intelligent humanoids. As we transition from R&D to full-scale manufacturing, we seek an experienced Research Engineer, Simulation.

Research Engineers in simulation are generalists who build the simulation stack and close the sim-to-real gap. A typical day involves building contact-rich physics simulation, scaling up reinforcement learning algorithms, or solving the sim-to-real gap in the visual or physics domains. You will own simulation and focus on making simulation as widely used as possible within the company. By making simulation a trusted proxy of the real world, you will drive AI model evaluation and iteration speed. You will work closely with other AI team members and also develop independently.

Why this job is exciting

Your role on the team will be to build ML robotics simulation and close the sim-to-real gap
You will work across the AI stack and solve gaps in model training and inference
We aim to (1) double the number of tasks the robot can perform and (2) half the error rate on existing tasks, quarter over quarter
The team works closely together to prioritize direction and scale up a single approach to a production-ready system

Responsibilities

Day to day: ship AI stack for non-technical robot operators, scale up AI model training workloads, and own model inference reliability
Bring real-world tasks and projects into simulation via real-to-sim
Build the data engine (frontend UI and backend) to log, clean, and label data for foundation model training
Work with our robot operations team to scale up our datasets and model capabilities

REQUIREMENTS

Must-Haves

Bachelor’s degree in Computer Science or equivalent
3+ years of professional, full-time experience building simulation
Experience with physical simulators (Pybullet, IssacSim, Mujoco, etc.) and training policies in simulation
Experience with physics simulation (contact dynamics, system identification, physics engines)
Experience learning-based approaches to close the sim-to-real gap (domain adaptation, randomization)
Experience generating simulated assets and environments (Blender, Maya)
Ability to rapidly prototype ideas in code in an independent manner
Published research in top Simulation or ML conferences (SIGGRAPH, NeurIPS, CoRL, RSS, etc.)

Nice-to-haves

Experience with high-fidelity, real-time rendering
Experience with GPU simulation
Have built large programming projects on your own for fun (e.g. open source projects)
Training large-scale ML models such as visual foundation models, large language models, pixel-level generative models
Have implemented highly performant software

Compensation

We offer a total compensation package including base salary from US$105,000 to US$250,000 annually, with generous stock options and other benefits.

We seek the world's most talented individuals with a passion for inventing and building a more prosperous future. At 1X you'll get to own real projects and be rewarded for your achievements and output. We hire, recognize and reward based on merit. We believe the best work is done when collaborating and therefore require in-person presence.

Typical interview process

Introductions - interviews to learn more about you and talk about 1X and the role
Interview with a member of the Talent Acquisition team
Hiring manager / senior team member / technical interview
Team interviews - technical interviews and deep-dives with team members. May include a take home challenge, presentation or problem-solving exercise
Technical deep-dive conversation with a team member
Onsite interviews with team members
Final stages - you move to the final round
Expectation management with the hiring manager
We will conduct reference checks
Job offer conversation

Depending on the role and your background, additional interviews may be added. You are also welcome to request additional conversations with anyone you would like to meet, but didn’t get to meet during the interview process.

Not sure if this is you?

Studies have shown that women are less likely to apply to jobs unless they meet all qualifications. If you’re excited about this role, but you’re not sure if you qualify, apply anyway! You may be just the right candidate for this or other roles.

Location

We believe the best work is done when collaborating and therefore require in-person presence in our office locations.

Sunnyvale, CA

We are in the heart of the SiIlicon Valley in a commuter-friendly location with plenty of parking, access to 101 or 280. If you prefer public transportation, Orange Line (VTA) light rail station is across the street. Living in the Bay Area, you will have access to many activities available in its proximity from surfing in Half Moon Bay to skiing at Tahoe, wine tasting in Napa, hiking on the many trails or other sports activities on the many tennis courts, golf courses, etc..

If you are relocating to Sunnyvale, we offer a comprehensive relocation package to support you and handle the logistics of your move.

A value driven team

These are the ideas that express our team’s culture and how we work:

Be Nice

Collaboration is our driving force. Our team creates an open, trusting environment where everyone can be their most creative.

Stay Smart

A world-changing team needs the brightest minds in every discipline. This is where people come to work, learn, and grow to their full potential.

Make History

Everything we do gets us closer to one ambitious vision: Creating an Abundant Supply of Labor using Safe, Intelligent Humanoids. We believe what we build today will impact generations.

1X is an inclusive and equal-opportunity employer that values diversity. We consider all qualified applicants regardless of race, religion, gender, age, sexual orientation, disability, or any other protected class. If you have a disability or special need that requires accommodation, please don't hesitate to let us know during the interview process. We will do our best to accommodate your needs.

We're excited to have you on board!

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Research Engineer, Simulation