Speak is the first & only app that lets you get real conversational practice without needing a live tutor on the other end. And we build some serious AI tech to make that possible. Backed by Accel, Khosla and Y Combinator.
About the role
We’re looking for a senior full-stack engineer to serve as the hands-on technical lead for Discovery, the pod that helps motivated learners and small teams discover, try, and buy Speak. You’ll set technical direction across the web acquisition and purchase journey, including public discovery, authentication, checkout, billing, provisioning, and measurement.
What they're looking for
- 6+ years of experience building high-quality, production-scale web applications, with strong proficiency in TypeScript, React, and Node.js
- A track record as the technical lead for ambiguous, multi-system initiatives, while remaining hands-on in architecture and implementation
- Experience designing APIs and backend services, working with relational data, and reasoning clearly about boundaries between systems
- Strong product and business judgment, with the ability to translate growth or B2B objectives into pragmatic scope, measurable outcomes, and durable technical foundations
- Experience building reliable transactional or stateful workflows, with strong instincts around data integrity, idempotency, observability, and safe rollouts
- Ability to balance building the right way with shipping quickly, learning from real usage, and improving systems incrementally
More about this role
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.
We’re looking for a senior full-stack engineer to serve as the hands-on technical lead for Discovery, the pod that helps motivated learners and small teams discover, try, and buy Speak....
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