Job Description

Join to apply for the Senior Fullstack Engineer role at Speak

Join to apply for the Senior Fullstack Engineer role at Speak

About Us

Our mission is to reinvent the way people learn, starting with language. We begin by teaching the next billion people English, Spanish, and French.

English is the global language of business, culture, and communication, and over 1.5 billion people around the world are actively trying to learn right now. Others dream of communicating with the half-billion native Spanish speakers across the globe. The problem is that it's nearly impossible to learn to

About Us

Our mission is to reinvent the way people learn, starting with language. We begin by teaching the next billion people English, Spanish, and French.

English is the global language of business, culture, and communication, and over 1.5 billion people around the world are actively trying to learn right now. Others dream of communicating with the half-billion native Spanish speakers across the globe. The problem is that it's nearly impossible to learn to speak a language without constant access to a speaking partner. Grammar and vocab apps don't really help – you need to actually converse with someone.

Speak is on a journey to fix this. We're creating an AI-powered experience that replicates the flow of a conversation, without needing a human on the other end. The goal is to make it radically more accessible to be able to have conversations in a foreign language and eventually help hundreds of millions of people gain fluency who otherwise wouldn't be able to.

We started on this journey over five years ago and we've still got a long ways to go. We're thoughtfully adding new team members only when we think they can truly play a big role in our mission.

Speak launched first in South Korea where we have quickly grown to become the top grossing education app in the country. We have now delivered this winning product to more than 40 countries globally and are continuing to expand to more markets in the coming months. The company is well funded, and as of December 2024, we've reached a $1B valuation with our Series C round, through key partners like Accel, OpenAI, Founders Fund, Y Combinator, Khosla Ventures, Lachy Groom, Josh Buckley, and more. We’re a team of more than 90 based throughout San Francisco, Seoul, Tokyo, Taipei, and Ljubljana.

About This Role

We are looking for a backend leaning full-stack engineer to work on building novel AI-powered product experiences. The ideal candidate will have experience working in close coordination with product, design, and machine learning teams, as well as have a background in building polished consumer applications. This role sits at the center of developing our newest products focused on programmatic, conversationally-driven language learning and will be an instrumental contributor to the future of our company.

What you'll be doing

• Building novel AI-driven product experiences and user interfaces on the web
• Owning the entire development cycle of features, from conception to production
• You'll be able to write code very quickly, ship frequently, and make a huge impact on our business by helping us scale our content

What we're looking for

• 4+ years of experience building highly polished web-based product experiences, including extensive experience with React
• You appreciate balancing doing things the right way but also can build things scrappily if necessary
• You enjoy shipping things quickly and frequently
• You're an excellent communicator and enjoy collaborating with people across all functions

Office

• San Francisco, CA

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.

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Full-time

Job function

• Job function

  Engineering and Information Technology

• Industries

  Software Development

Referrals increase your chances of interviewing at Speak by 2x

Sign in to set job alerts for “Full Stack Engineer” roles.

San Francisco, CA $160,000.00-$180,000.00 1 day ago

San Francisco, CA $130,000.00-$238,000.00 2 weeks ago

San Francisco, CA $220,000.00-$350,000.00 2 weeks ago

San Francisco, CA $145,000.00-$230,000.00 2 weeks ago

San Francisco, CA $150,000.00-$230,000.00 2 months ago

Software Engineer, AI Intern (Fall 2025)

San Francisco Bay Area $57.00-$61.00 2 weeks ago

Software Engineer, AI Platform - New Grad

Full Stack Software Engineer - Post-training

Full Stack Software Engineer (L4), Product Localization Engineering

Mountain View, CA $125,400.00-$188,100.00 1 week ago

Software Engineer, Frontend (All Levels)

San Francisco, CA $150,000.00-$220,000.00 2 weeks ago

San Jose, CA $130,000.00-$180,000.00 2 weeks ago

Software Engineer (L4), Content & Business Products

San Francisco, CA $130,000.00-$185,000.00 1 month ago

San Francisco, CA $165,000.00-$165,000.00 2 years ago

San Francisco, CA $130,000.00-$220,000.00 2 days ago

eCommerce Full Stack Developer (React / Shopify) - On Site

Palo Alto, CA $152,400.00-$228,700.00 2 weeks ago

San Francisco, CA $130,000.00-$140,000.00 2 weeks ago

San Francisco, CA $125,000.00-$175,000.00 3 weeks ago

San Francisco, CA $120,000.00-$190,000.00 8 months ago

We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI.

#J-18808-Ljbffr

Job Tags

Full time, Part time, Work at office, Live in,

Similar Jobs