Full-Stack Engineer for Founders

Y Combinator

Join a leading startup accelerator as a frontend engineer, focusing on creating impactful user-facing tools in a small, fast-paced team.

Last checked on May 26, 2026. We may earn a commission when you click through.

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If you're looking to deepen your frontend skills while working closely with founders, this could be a great fit.

✓ Opportunity to shape user tools directly ✓ Collaborative environment with founders ✓ Located in a vibrant tech hub

Full-Stack Engineer for Founders

Y Combinator

Updated 13 hours ago
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San Francisco

If you're looking to deepen your frontend skills while working closely with founders, this could be a great fit.

About this role

Y Combinator is a prominent startup accelerator known for nurturing innovative ideas and supporting early-stage companies.

About the Company

Y Combinator is a premier startup accelerator known for funding and mentoring innovative startups.

Key Highlights

  • Work in a small, high-impact team
  • Develop critical user-facing tools with React
  • Located in the heart of San Francisco
  • Fast-paced development environment
  • Direct contribution to startup success

💡 Honest Take: This job is thrive in a startup culture and want to make a significant impact quickly.

Pros

  • Opportunity to shape user tools directly
  • Collaborative environment with founders
  • Located in a vibrant tech hub

Cons

  • Fast-paced may not suit everyone
  • Potential for long hours in a startup
  • Limited job security typical of startups

Best For: Ideal for those with strong frontend skills and a passion for innovation in tech.

Watch Out: Be prepared for the unpredictability that often comes with startup environments.

Apply for this position

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What Customers Say

Employees appreciate the innovative environment but note the demanding pace and long hours typical of startup culture.

Expert Review

At Y Combinator, the focus is on developing impactful user-facing tools, particularly using React. This position demands strong frontend skills and an eagerness to innovate. The company is well-known in the startup scene, which can open doors for future opportunities.

Working within a small team means you'll have a direct influence on projects, but also a heavier workload. Expect a fast-paced atmosphere where deadlines can be tight, reflecting the typical startup hustle.

While the environment can be exhilarating, it's not for everyone. If you're uncomfortable with ambiguity or long hours, this might not be your best fit. with startups, job security can be unpredictable, especially in the early stages.

Overall, if you thrive on the adrenaline of building something from the ground up and have a strong React foundation, this role at Y Combinator could be your ticket to making a real change in the tech landscape.

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