AI Product Engineer, Internship (Summer 2026) at Speak

San Francisco, California, United States -

Full Time

Start Date

Immediate

Expiry Date

02 Jan, 26

Salary

0.0

Posted On

04 Oct, 25

Experience

0 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

Computer Science, Software Engineering, React, Node, TypeScript, Python, AI Models, Product Sense, Collaboration, Experimentation, Learning, Adaptability, Ownership, Curiosity, Feedback, Evaluation

Industry

Software Development

Description

About us Our mission is to reinvent the way people learn, starting with language. Learning a language can change a life by opening doors to new cultures, careers, and communities. Two billion people around the world are actively trying to learn a language, but the best way to learn (one-on-one tutoring) is hard to access at scale and hasn’t been meaningfully improved in decades. Speak is building a human-level, AI-powered tutor in your pocket: a conversation-first experience that lets learners actually speak, get instant feedback, and progress through carefully designed lessons. The result is a complete path from beginner to confident speaker across multiple languages. Speak first launched in South Korea in 2019, where Speak has now become the number one language learning app, and we now serve learners across many markets and 15+ languages. Speak is one of the world’s leading AI companies, with over $150m raised in venture investment from OpenAI, Accel, Founders Fund, Khosla Ventures, and more, with a distributed team across San Francisco, Seoul, Tokyo, Taipei, and Ljubljana. About this Internship As an AI Product Engineering Intern at Speak, you’ll contribute directly to building the future of language learning by creating innovative, AI-powered product experiences. You’ll work hands-on with cutting-edge Language Learning Models (LLMs) to help millions of users worldwide become fluent faster. This is a high-impact internship where you’ll learn from top engineers and product thinkers while taking ownership of meaningful projects. You’ll have the opportunity to work across the stack and contribute to features that shape the core learning experience at Speak. What You’ll Be Doing Building and shipping features: Contribute to the development of LLM-powered experiences such as conversational onboarding, grammar assessment and feedback, and personalized lessons. Experimenting with AI models: Test prompts, evaluate model performance, and help refine systems that make learning feel natural and effective. Collaborating across teams: Work with Engineering, Applied ML, Product, Design, and Content to bring new features from idea to launch. Improving processes: Help refine best practices for prompting, experimentation, LLM Ops, and evaluation. Scaling impact: Contribute to systems that reach millions of users across 30+ countries and multiple languages. What We’re Looking For Strong foundation in computer science and software engineering (experience with React, Node, TypeScript, and/or Python is a plus). Curiosity and excitement about LLMs, with some prior exposure through projects, coursework, or personal exploration. Ability to work independently, learn quickly, and adapt in a fast-paced environment. Strong product sense: you think not just about how something works, but also how it impacts users. Eagerness to take ownership of meaningful projects and contribute to real-world products. What You’ll Gain Mentorship and growth: Learn directly from engineers and product leaders with deep expertise in AI and education technology. Hands-on experience: Work with state-of-the-art LLMs and modern full-stack tools while deploying to real users at scale. Impact at scale: Your work won’t sit in a sandbox — it will contribute to a product used by millions of learners worldwide. A high bar: You’ll be challenged, supported, and trusted to do work that matters. Location: San Francisco, CA (office-based internship) Why work at Speak Join a fantastic, tight-knit team at the right time: we're growing very quickly, we've most recently raised our Series C from some of the top investors in the valley, and we've achieved product-market fit in our initial markets. You'd join at a magical time when a single person could significantly change the course of the company. Do your life's work with people you’ll love working with: we care strongly about our craft and want every person at Speak to feel like they're growing every day. We believe in the idea that working with people you both enjoy and have respect for makes everything better. We hire thoughtfully and only work with people we admire deeply. Global in nature: We're live in over 40 countries and launching in a number of new markets soon. We have dedicated offices in San Francisco, Ljubljana, Seoul, and Tokyo, and you’ll have the opportunity to talk to users in each of these regions on a regular basis as well as travel. Impact people's lives in a major way: Learning a language is one of the single most life-changing skills one can learn, and right now 99% of people never achieve their goal because the process is broken. We’re helping millions of people achieve their goals and improve their lives. Speak does not discriminate based upon race, religion, color, national origin, gender (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, or other applicable legally protected characteristics.

Responsibilities

As an AI Product Engineering Intern, you will contribute to the development of AI-powered language learning experiences and collaborate with various teams to bring new features from idea to launch. You will also experiment with AI models and help refine systems to enhance the learning process.