Senior Backend Engineer

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.