Full-stack Engineer, Internship (Summer 2026)

$6K - $10K / monthly•San Francisco, CA, US Job type Internship Role Engineering, Full stack School year Senior and above Visa US citizen/visa only Apply to Speak and hundreds of other fast-growing YC startups with a singleprofile. Apply to role 7;

About the role

About this Internship

We99re looking for a highly motivated full-stack engineering intern excited to work across the stack and contribute to building novel AI-powered product experiences. While your initial projects may lean toward the frontend, you99ll also gain exposure to backend development, helping us shape cutting-edge, conversationally driven language-learning products. This internship is designed for students or recent graduates who want to learn quickly, make a tangible impact, and work alongside a high-performing product, design, and machine learning team.

What You99ll Be Doing

• Building innovative AI-driven product experiences and user interfaces on the web
• Contributing to the end-to-end development cycle of features, from idea to release
• Writing code quickly, shipping frequently, and seeing the real-world impact of your work
• Collaborating with a multidisciplinary team on product, design, and ML-driven projects

What We99re Looking For

• Strong experience (through coursework, personal projects, or internships) building applications
• Excitement about learning both frontend and backend development in a fast-paced environment
• A balance of craftsmanship and scrappiness97you care about doing things the right way but can also move fast when needed
• Strong communication skills and a desire to collaborate across functions
• Strong foundation in computer science and software engineering (experience with React, Node, TypeScript, and/or Python is a plus).

Office

San Francisco, CA

About the interview

1. Recruiter Screen (20mins)
2. Take-Home-Project (5-6 hours)
3. Virtual Onsite Interviews

1. Live Coding (1hr)
2. System Design (1hr)
3. PM Interview (45min)
4. Final Chat with Eng Leader (30min)
5. Offer

About Speak

Speak is an AI English tutor on your phone that is the best way to become conversationally fluent in English.