Product Engineers

United States Digital Space LLC; San Francisco (CA); On-site; USD 120,000 - 160,000; Full time

Benefits offered by this job

Competitive compensation

High-autonomy engineering team

Carry in YC fund

Job summary

United States Digital Space LLC, located in San Francisco, is hiring Product Engineers to revolutionize startup software development. Join a small team of engineers focused on building innovative tools that help founders succeed in today's AI era.

You will work on exciting projects that include innovative AI products, foundational software for startups, and more, all while collaborating directly with founders and team leaders. If you're an enthusiastic builder eager to work in a high-autonomy environment, we want to hear from you!

Qualifications

• Experience in building software products.
• Familiarity with AI programming tools and LLMs.
• Ability to work closely with founders.

Responsibilities

• Build and operate products for startups and YCombinator.
• Experiment with new AI technologies.
• Collaborate with a small, high-autonomy team.

Skills

Building software

Experimenting with coding agents

Context engineering

Rails

React

Python

Tools

Postgres

TypeScript

Job description

the company | Product Engineers | San Francisco (Onsite) | Full-time | https://www.ycombinator.com/software

YC is hiring Product Engineers to build the future of YC -- and increasingly, software for startups everywhere.

We're a team of ~20 engineers building everything from Work at a Startup and Demo Day to investor software, founder tools, AI systems, and new open source projects. We don't have PMs. Engineers talk to users, decide what to build, and ship quickly.

Some of what we've been building:

• New products: GStack rethinks the software stack for an AI-native world. GBrain explores persistent memory and knowledge systems for AI. Paxel and other AI-powered products help founders—and increasingly everyone else -- build software and companies faster.

• Products at scale: We build and operate Work at a Startup (2M+ candidates, 1000s of early startups), Demo Day, our investor marketplace, SAFE signing, founder CRM, and the software that powers YC itself.

• Data: YC has over 20 years of proprietary startup data. We're applying it to how we think about the future of YC's batch, fundraising tools, hiring, recommendations, and entirely new ways to help people start and grow successful companies.

AI has fundamentally changed how we build software, and we're looking for engineers who are already experimenting with coding agents, MCP, LLMs, context engineering, evals, developer tooling, and whatever comes next. Our stack includes Rails, React, Postgres, Python, TypeScript, LLM APIs, and plenty of experimental infrastructure, but we're much more interested in great builders than expertise in any particular framework.

We're in person in San Francisco (Dogpatch). You'll work closely with founders and alongside people like Garry, Jared and Diana, helping define how YC—and startups more broadly—build software in the AI era.

We offer competitive compensation, carry in the YC fund, and a small, high-autonomy engineering team.

Learn more about the team and role at https://www.ycombinator.com/software. If this sounds exciting, I'd love to chat -- email me directly at [e-mail].