Senior Full Stack Product Engineer, Early Stage Project, X

About X, The Moonshot Factory

X is a diverse group of inventors and entrepreneurs who build and launch technologies that aim to improve the lives of millions, even billions, of people. Our goal: 10x impact on the world’s most intractable problems, not just 10% improvement. We approach projects that have the aspiration and riskiness of research with the speed and ambition of a startup.

We are an early stage geoscience AI team at X with a growing, interdisciplinary portfolio. To prove our path to the moon, we make early contact with the real world through both internal and external partnerships. As a member of the team, you are a self-starter, have a deep passion for problem solving and experimentation and will work on 0-1 AI-based products.

As a Product Engineer, you’ll be instrumental in translating cutting‑edge multi‑modal AI research into real-world products, building full stack front‑end and back‑end solutions to power production systems and customer prototypes.

• Act like an owner; be fearless in diving deep, asking questions, proposing solutions, establishing consensus and then making things happen.
• Define front‑end and back‑end system strategy, build full stack external and internal production systems and pilots.
• Extensive use of AI for code tooling.
• Get your hands dirty! Have fun, learn from your teammates and teach them as well.

• MS/PhD in CS or equivalent practical experience in full stack software development, and 6+ years of professional experience building and releasing production software.
• We particularly value experience in early‑stage or startup environments, where engineers take ownership and drive product development from the ground up.
• Strong Type Script, JavaScript proficiency.
• Expert experience with UI frameworks including modern UI stacks (React, Tailwind, Vite, …)
• Experience with cloud computing platforms and infrastructure (e.g., Google Cloud Platform).
• Experience using AI code generation tools.
• Experience with UI test automation frameworks.
• Experience leading other engineers in a small team is a strong plus.
• Experience working with external partners and customers is a strong plus.

The US base salary range for this full‑time position is $174,000 - $261,000 + bonus + equity + benefits. Within the range, individual pay is determined by work location and additional factors, including job‑related skills, experience, and relevant education or training. Your recruiter can share more about the specific salary range for your location during the hiring process.

Please note that the compensation details listed in US role postings reflect the base salary only, and do not include bonus, equity, or benefits.

At X, we don't just accept difference - we celebrate it, we support it, and we thrive on it for the benefit of our employees, our products and our community. We are proud to be an equal opportunity workplace and is an affirmative action employer. We are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity or Veteran status.

We also consider qualified applicants regardless of criminal histories, consistent with legal requirements.

If you have a disability or special need that requires accommodation, please contact us at x‑accommodation‑(Use the "Apply for this Job" box below).