Overview
News
Technologies
Salaries
Products
People
Growth
Offices
Jobs
Financials

Funding and backers

Team
51-200
employees, estimated range
Hiring now
4
open roles
Momentum
15/100
in the news
Last sign of life
1 mo ago
a posting or a news item
The story so fareach stage dated by its source: the company's releases, the press, registers, filings
2024 Founded
Tractionpublic signals, read monthly
Web presence
top 5%
of 133.2M domains by links, Common Crawl
Hacker News stories
2
best: 35 points
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Advanced AI research lab developing autonomous systems for complex decision-making in uncertain environments.

Overview

FirstPrinciples is a research company building AI systems for discovery in fundamental science, starting with Theo, the AI Physicist, and systems for AI research and automated conjecturing.

Tech stack

Technologies named in job postings at FirstPrinciples over the last 12 months, by layer, with the share of postings for each.
Technologies in use
54
Postings analysed
8
Stack modernity
84/100AI adopter
Languages
Python
Rust
TypeScript
Frameworks & libraries
CUDA
OpenTelemetry
SGLang
Cloud & platforms
Kubernetes
AWS
Linux
Azure
AI & ML
LLM
ChatGPT
Claude
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Full FirstPrinciples tech stack 54 technologies · by team · pay by technology · changes · similar stacks

Growth

Hiring Momentum
53/100
Stable
Open positions
4
0 opened / 5 closed in 30 days
Median time-to-fill
65 days
faster than 19% of the market
ATS activity
Every ~4 hours
Today
Hiring Dynamics +300%
Hiring Focus
The percentage next to each role is its share of the company's job openings over the last 90 days; the arrow shows the shift versus the previous period.
Sales
57% ▲
Security
14% ▼
Management
14% ▼
Marketing
14% ▼
Activity Timeline
Added Unix to stack Sep 2026
Added TCP/IP to stack Sep 2026
Added DNS to stack Sep 2026
Added Machine Learning to stack Sep 2026
Added Linux to stack Sep 2026
Added Red Teaming to stack Aug 2026
Added Model Context Protocol to stack Aug 2026
Added Least Privilege to stack Aug 2026
Added IAM to stack Aug 2026
Added Function Calling to stack Aug 2026
Added InfiniBand to stack Aug 2026
Added HPC to stack Aug 2026

Offices

Where the company hires and what each office is for
Cities
1
Hiring now
0
Countries
1
Toronto Canada
HQ
Contact us
50-200 est. staff
100 University Ave, 5th Floor, Toronto, ON M5J 1V6, Canada
seen since Dec 2025 company site

Jobs

≈ $109k – $269k per year (Estimated) • Remote (United States, United Kingdom, Canada) • Full-Time
AI Agents
Machine Learning
Apply
≈ $87k – $177k per year (Estimated) • Remote (United States, United Kingdom, Canada) • Full-Time • Bachelor's Degree • Canada
Claude
ChatGPT
Apply