SECTION I · THE BRIEF
Brief #42315Updated 22 AUG 2026SAN FRANCISCO, CAYcSOFTWARE COMPANIES
Employbl Company Profile

Product Engineer

Primitive is the core developer of Arbiter, an open-source software framework for crypto transaction simulation.

Location
San Francisco, CA
Company size
5–10
Posted
2d ago
Via
Yc
Section II · Premium ProfileMembers only
  • 01Comp band & equity packageLocked
  • 02Seniority & experience requirementsLocked
  • 03Interview process & rubricLocked
  • 04Hiring manager & team contextLocked
  • 05Growth trajectory in this roleLocked
  • 06Offer & decision timelineLocked
Start free trialSign in

7-day free trial · $25/mo · cancel anytime

Primitive logo

Product Engineer · Primitive

View company profile
Job title
Product Engineer
Job location
San Francisco, CA, US
Job listing URL
https://www.ycombinator.com/companies/primitive/jobs/RVWGWpZ-product-engineer
Job description
## About [primitive.dev](http://primitive.dev) [primitive.dev](http://Primitive.dev) is building the communication layer for the agent economy. As AI agents increasingly act on behalf of people and businesses, companies need infrastructure to identify them, understand what they need, and interact with them at scale. We rebuilt email from the ground up for machine-to-machine communication, optimizing the entire stack for latency, throughput, reliability, and developer experience. On top of that infrastructure, we deploy and operate agents for our customers. They begin as a general interface to the business, then learn from incoming traffic and create specialized agents to handle recurring workflows. ## What you’ll do Own the product through which non-technical teams create and operate agents. We let someone define a business outcome, deploy an agent, and improve it without ever seeing the engineering underneath. This role owns that abstraction across product, design, frontend, and backend. ## What you bring * You have built and shipped polished user-facing products end to end * You are an excellent frontend engineer and can work across the backend when needed * You can turn complicated systems and ambiguous customer needs into simple software ## Nice to have * Experience making technical systems accessible to non-technical users * Experience with agents, workflow automation, or developer infrastructure * Former founder ## Compensation $190k-$230k base salary plus equity. World-class benefits. Full-time and in person in San Francisco, relocation fully covered if needed.
View job listing ↗
The Saturday Briefing

Get the Saturday tech briefing

New company profiles, funding moves, and who’s hiring across the market — every Saturday morning.

Where this role is based

San Francisco, CA

Loading map…

Primitive headquarters

New York, NY

Company size

5–10 employees

Founded

2020

Total raised

$12,000,000

View company profile ↗

Funding rounds

  • Series A$9M
  • Seed$3M