A superhuman, AI-powered language tutor in your pocket

Speak is revolutionizing language learning through AI technology, having recently achieved a $1B valuation with their Series C funding. As a Senior Fullstack Engineer on the Growth team, you'll be at the forefront of developing AI-powered language learning experiences that are changing how people acquire new languages globally.

The company has established itself as the top-grossing education app in South Korea and has expanded to over 40 countries. Backed by prestigious investors including Accel, OpenAI, Founders Fund, Y Combinator, and Khosla Ventures, Speak is well-positioned for continued growth and innovation.

This role offers a unique opportunity to work on cutting-edge AI applications in language learning, combining technical expertise with real-world impact. You'll be building novel AI-driven product experiences and user interfaces, working closely with cross-functional teams including product, design, and machine learning.

The ideal candidate will bring 4+ years of experience in building polished web applications, with strong React expertise and a track record of shipping high-quality code quickly. You'll be joining a team of 90+ professionals spread across global offices in San Francisco, Seoul, Tokyo, Taipei, and Ljubljana, offering exposure to international markets and diverse perspectives.

What makes this role particularly exciting is the combination of technical challenges and meaningful impact. You'll be working on technology that helps millions of people achieve their language learning goals, particularly in English, Spanish, and French. The company's mission to make language learning more accessible through AI-powered conversation practice presents unique technical challenges and opportunities for innovation.

The position offers competitive compensation ($170K - $280K) and the chance to work with a thoughtfully assembled team in San Francisco. Speak values craft, growth, and collaboration, making it an ideal environment for engineers who want to make a significant impact while working with respected colleagues.

If you're passionate about using technology to solve real-world problems, enjoy rapid iteration and deployment, and want to be part of a team that's redefining language learning through AI, this role offers an exceptional opportunity to contribute to a fast-growing, mission-driven company.

Senior Fullstack Engineer position at Speak, building AI-powered language learning experiences with React and modern web technologies.

Senior Fullstack Engineer, Growth

Speak is revolutionizing language learning through AI technology, having recently achieved a $1B valuation with their Series C round. As an AI Product Engineer, you'll be at the forefront of developing innovative language learning solutions powered by Large Language Models (LLMs).

The role combines full-stack engineering with AI/ML expertise, focusing on creating and enhancing LLM-powered features that serve millions of users across 40+ countries. You'll be working on conversational onboarding, lesson experiences, grammatical assessment, and personalized learning systems.

The company has strong backing from prestigious investors including Accel, OpenAI, Founders Fund, Y Combinator, and Khosla Ventures. With a team of 90+ spread across global offices in San Francisco, Seoul, Tokyo, Taipei, and Ljubljana, you'll be part of an international environment making a real impact on how people learn languages.

The ideal candidate brings 3-5+ years of full-stack engineering experience, strong product intuition, and a passion for AI/ML technologies. Experience with LLM applications and operations is highly valued. You'll work independently while collaborating with cross-functional teams including Engineering, Applied ML, Product, Design, and Content.

This is an opportunity to join at a pivotal time - post product-market fit and during rapid growth - where individual contributions can significantly influence the company's trajectory. The role offers the chance to work on meaningful technology that helps millions achieve language fluency, with competitive compensation ranging from $140K to $250K.

Working at Speak means joining a thoughtfully curated team that values craft and growth, with the opportunity to make a lasting impact on global education through cutting-edge AI technology. The company maintains a strong focus on product quality and user impact, with their app already achieving top grossing status in the education category in South Korea.

AI Product Engineer role at Speak, developing LLM-powered language learning products and features for a rapidly growing edtech startup.

AI Product Engineer

Speak is revolutionizing language learning through AI technology, having recently achieved a $1B valuation with their Series C funding. As an Applied ML Engineer in the Speech team, you'll be at the forefront of developing cutting-edge speech recognition models that help teach language fluency. The role involves end-to-end ownership of the modeling pipeline, from training and experimentation to deployment and monitoring.

The company has already established itself as the top-grossing education app in South Korea and has expanded to over 40 countries globally. Backed by prestigious investors including Accel, OpenAI, Founders Fund, Y Combinator, and Khosla Ventures, Speak is well-positioned for continued growth. With a team of 90+ members across San Francisco, Seoul, Tokyo, Taipei, and Ljubljana, they're creating an AI-powered experience that replicates natural conversation flow without requiring a human partner.

This role offers a unique opportunity to work on innovative projects including ASR, assessment, pronunciation, and content personalization. You'll collaborate closely with Product teams to design learning experiences and measure the impact of production models on user outcomes. The position requires strong technical expertise in machine learning, particularly in speech recognition, combined with the ability to think strategically about product implementation.

Working at Speak means joining at a pivotal time when individual contributions can significantly impact the company's direction. The culture emphasizes craft, growth, and working with admirable colleagues. The mission is meaningful - helping millions achieve language fluency who otherwise wouldn't have the opportunity. With their recent Series C funding and proven product-market fit, this role offers the chance to be part of a transformative education technology company.

Join Speak as an Applied ML Engineer to develop cutting-edge speech recognition models for language learning, working with a global team and advanced AI technology.

Applied ML Engineer, Speech

AI-powered language tutor app helping people learn English, Spanish, and French through conversational practice.

Speak is revolutionizing language learning through AI-powered technology, having recently achieved a $1B valuation with their Series C round. As a Senior Backend Engineer, you'll be at the forefront of developing novel AI-driven product experiences that help millions learn languages effectively.

The role combines backend expertise with full-stack capabilities, focusing on building scalable systems that power their conversational language learning platform. You'll work directly with product, design, and machine learning teams to create polished consumer applications that make language learning more accessible and effective.

Speak has shown impressive growth, becoming the top-grossing education app in South Korea and expanding to over 40 countries. The company is well-funded by prestigious investors including Accel, OpenAI, Founders Fund, Y Combinator, and Khosla Ventures. With a team of 90+ spread across global offices in San Francisco, Seoul, Tokyo, Taipei, and Ljubljana, you'll be joining at a crucial growth phase.

The ideal candidate will bring 5+ years of backend engineering experience, preferably from fast-paced startups. You'll need excellent problem-solving and communication skills, ability to mentor other engineers, and strong product sense. The role offers an opportunity to make a significant impact, working with a tight-knit team on meaningful technology that changes lives.

Key responsibilities include building AI-driven product experiences, creating scalable backend systems, debugging complex streaming issues, and owning feature development from conception to production. You'll be expected to write code quickly, ship frequently, and contribute to scaling the platform.

The company offers a collaborative environment where you'll work with admired colleagues, have global reach and impact, and help millions achieve their language learning goals. Speak has achieved product-market fit in initial markets and is positioned for continued growth, making this an ideal time to join and shape the company's future.

Senior Backend Engineer role at Speak, building AI-powered language learning experiences with competitive compensation $170K-$280K in San Francisco.

Senior Backend Engineer

Speak is revolutionizing language learning through AI technology, having recently achieved a $1B valuation with their Series C funding. As an Applied ML Engineer focusing on LLMs, you'll be at the forefront of developing AI-powered language learning experiences that serve users across 40+ countries. The company has established itself as the top-grossing education app in South Korea and is rapidly expanding globally.

The role involves working on cutting-edge LLM applications in language learning, building personalized lesson systems, and developing knowledge graphs to track learner progress. You'll collaborate closely with content and product teams to create innovative learning experiences and improve assessment mechanisms through synthetic evaluators.

Speak is backed by prestigious investors including Accel, OpenAI, Founders Fund, and Y Combinator. With offices in San Francisco, Seoul, Tokyo, and Ljubljana, the company offers a truly global work environment. The team of 90+ is focused on making language learning accessible to millions, particularly in English, Spanish, and French education.

This position offers an opportunity to make a significant impact on the company's direction during a period of rapid growth. The work environment emphasizes craft, personal growth, and collaboration with admirable colleagues. You'll be joining at a crucial time when individual contributions can substantially influence the company's trajectory.

The role requires strong experience in machine learning engineering, particularly with LLMs, and the ability to think creatively about AI-powered product experiences. You'll be part of a mission to solve the fundamental challenge of language learning - providing consistent conversation practice without requiring a human partner.

Join Speak as an Applied ML Engineer to build AI-powered language learning experiences using LLMs, working with a global team to revolutionize how people learn languages.

Applied ML Engineer, LLM

Speak is revolutionizing language learning through AI technology, currently helping millions of users across 40+ countries become conversationally fluent in languages like English, Spanish, and French. As a Series B funded startup backed by prestigious investors including OpenAI, Founders Fund, and Y Combinator, we're on a mission to make language learning accessible to everyone.

As a Senior Android Engineer at Speak, you'll join our 75-person team spread across SF, Seoul, Tokyo, and Ljubljana. You'll be instrumental in building and improving our mobile application that has already achieved the status of top-grossing education app in South Korea. Your role will involve working on critical features that directly impact our users' learning experience, from improving content delivery to implementing monetization features and supporting new market launches.

The position requires strong technical expertise in Android development, particularly with Kotlin and modern mobile architectures. You'll collaborate closely with backend engineers, product managers, and designers to ship features to millions of users. This is an opportunity to join at a pivotal time when individual contributions can significantly impact the company's trajectory.

What makes this role unique is the combination of technical challenges and meaningful impact. You'll be working on sophisticated systems including text-to-speech and audio/video streaming while helping people achieve their language learning goals. The company culture emphasizes craft, growth, and working with admirable colleagues in a global environment.

If you're passionate about using technology to solve real-world problems and want to be part of a team that's making language learning more accessible to the next billion people, this role offers the perfect opportunity to make your mark.

Senior Android Engineer role at Speak, building AI-powered language learning apps with Kotlin, focusing on growth, user acquisition, and system improvements.

Senior Android Engineer

AI-powered language learning platform teaching English, Spanish, and French through conversational practice.

Speak is revolutionizing language learning through AI-powered conversation practice, currently helping millions learn English, Spanish, and French. As the top-grossing education app in South Korea and expanding to 30+ countries, we're backed by prestigious investors including OpenAI, Founders Fund, and Y Combinator.

As a Staff Android Engineer, you'll join our 75-person team spread across SF, Seoul, Tokyo, and Ljubljana. You'll be crucial in developing features that serve millions of users, focusing on growth, monetization, and market expansion. The role involves collaborating with backend engineers, product, and design teams to improve content delivery, run A/B tests, and enhance our audio/video streaming systems.

We're seeking someone with 5+ years of mobile engineering experience, strong Kotlin proficiency, and expertise in mobile architectures. You'll work on exciting challenges like building growth loops, improving user acquisition/retention, and launching in new markets. The ideal candidate combines technical excellence with strong product sense and mentorship abilities.

This is an exceptional opportunity to join at a pivotal time - post-Series B, with proven product-market fit and rapid growth. You'll work with a tight-knit, talented team in a global company that's making a real difference in people's lives. Our offices in major global tech hubs offer unique exposure to international markets and users.

The role offers competitive compensation ($210K-$260K plus equity) and the chance to impact millions of language learners worldwide. We value craft, growth, and working with admirable colleagues in an environment where individual contributors can significantly influence the company's direction.

Staff Android Engineer role at Speak, building AI-powered language learning apps used by millions globally. 5+ years experience, Kotlin expertise required. $210K-$260K + equity.

Speak Engineering Jobs

A superhuman, AI-powered language tutor in your pocket