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FirstPrinciples via Ashby

Member of Technical Staff, Engineering

Worldwide senior
still open verified 1h ago posted 137d ago seen just now
Apply at jobs.ashbyhq.com

This is the employer's own posting, not a copy on a job board.

What we know

Is it still open?

Confirmed still open

Last checked 1h ago — checked against the employer's own applicant tracking system, which is the company answering directly.

We re-read the employer's own applicant tracking system and the posting was still there. That is the company answering directly.

Check this listing's status as JSON

How old is it?

Posted 137d ago

The date the source published, not the day we noticed it (2026-05-28). Last seen at its source just now.

Is it remote?

Ontario, Canada - Remote, Anywhere

That is the location the employer filed this posting under. Quoted as written — we do not re-word the source's own location.

Who may apply?

Available worldwide

The description states no restriction of its own. This is the source's own tag.

Pay not stated

Similar roles pay $95.1k–160k/yr

Middle 50% of 14 listings that do state pay — Engineering · all levels · Worldwide · USD/year. This employer has published no salary; this is what comparable listings we hold disclose, never converted between currencies or periods. How this is calculated.

Skills named in the ad

Code ReviewData Analysis

Recognised terms only, from a fixed vocabulary — this is what CV matching compares against.

Carried by 1 source

The listing

About FirstPrinciples
FirstPrinciples is building AI to accelerate scientific discovery. Our core product is the Theo Platform, a research environment built to help researchers iterate faster, validate rigorously, and reach verified results they can trust.

We're a fast-growing, remote-first team of builders, researchers, engineers, and thinkers working across Canada, the US, the UK, and expanding globally. What brings us together is a shared curiosity about how the universe works, and a belief that we can build systems that help us explore it more effectively.

We spend our time working on questions that don't have clear answers, like how to design AI that can reason through scientific problems, and how the scientific process as a whole might evolve. This is work that sits somewhere between creativity and rigorous thinking, and often requires comfort with ambiguity and iteration. If you're someone who enjoys tackling big, abstract problems and exploring ideas that don't yet have a defined path forward, you'll likely find the work here interesting.

 

Job Description:
FirstPrinciples is seeking skilled and motivated developers to join our team. In this role, you will play a crucial role in building technology tools to accelerate research in theoretical physics. You will work on developing our AI Physicist, leveraging gen AI tools like ChatGPT, and exploring and building new technologies to drive breakthroughs in theoretical physics.

Key Responsibilities:

  • Contribute to the design and coding of the AI Physicist, a closed-loop research engine, including the development of tools to support hypotheses generation, peer review, physics based simulations, validation against experimental data and self-revision, among other things. 

  • Write safe, testable code and set up automated unit tests to catch errors and apply lessons from recent research findings. 

  • Explore and integrate SOTA tools into existing platforms to enhance model capabilities. These tools can provide advanced analysis and insights, furthering the understanding of theoretical physics.

  • Add self-improvement features that pass automated checks before deployment.

  • Track runtime metrics and suggest optimizations that keep the project efficient and sustainable.

  • Develop custom tech solutions tailored to the specific needs of researchers. This may include developing algorithms, data analysis tools, or other software to accelerate research in specific areas of theoretical physics.

  • Apply knowledge of product development principles and practices to ensure that the tools developed are useful and effective for theoretical physicists worldwide.

  • Collaborate with stakeholders to define requirements, prioritize features, and ensure successful delivery.

Qualifications:

  • Bachelor's or Master's degree in Computer Science, Engineering, or related field.

  • Experience with common software architecture patterns and best practices.

  • Proven experience with web development and API integrations is essential.

  • Excellent programming skills are a must.

  • Proficiency in gen AI tools and their applications (e.g., ChatGPT, AlphaCode, Claude) is necessary.

  • Strong communication skills are crucial to articulate technical concepts to non-technical stakeholders.

  • Ability to work independently and collaboratively in a fast-paced environment.

  • Knowledge of theoretical physics or a strong interest in the field is a plus.

  • Familiarity with cloud technologies and infrastructure is a plus.

  • A passion for advancing knowledge and science advocacy is highly desirable.

Application Process:

  • Interested candidates are invited to submit their resume, a cover letter detailing their qualifications and vision for the role, and references. Please include “Member of Technical Staff, Engineering" in the cover letter.

Join us at FirstPrinciples and be a part of a transformative journey where science drives progress and unlocks the potential of humanity.

Apply at jobs.ashbyhq.com