Speak

Full-stack Engineer

Speak
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2 months ago

Base Salary

$150k - $280k/yr

Responsibilities

  • Serve as the hands-on technical lead for the Discovery pod from problem framing and architecture through implementation, launch, and production monitoring.
  • Design and build full-stack web journeys for users and small teams to discover, evaluate, purchase, and begin using Speak.
  • Lead cross-repository integrations across authentication, payments, entitlements, analytics, attribution, CRM, and administration experiences.
  • Partner with product, design, analytics, Marketing, Sales, and adjacent engineering pods to define scope, sequence dependencies, and deliver end-to-end outcomes.
  • Set quality standards for privacy, security, payment correctness, observability, performance, and resilient rollouts.
  • Evolve architecture and development patterns while protecting conversion and revenue across high-traffic global funnels.
  • Improve AI-native development practices through design reviews, QA loops, verification, and safe AI-assisted contributions.
  • Mentor engineers and raise standards for technical judgment, communication, and ownership.

Requirements

  • 6+ years of experience building high-quality, production-scale web applications.
  • Strong proficiency in TypeScript, React, and Node.js.
  • Experience leading ambiguous, multi-system initiatives while remaining hands-on with architecture and implementation.
  • Experience designing APIs and backend services, working with relational data, and defining clear system boundaries.
  • Experience building reliable transactional or stateful workflows with attention to data integrity, idempotency, observability, and safe rollouts.
  • Strong product and business judgment, cross-functional communication, and a willingness to mentor engineers.
  • Excitement about AI-assisted development paired with thoughtful verification and a high production-quality bar.
  • Preferred experience with Next.js and Postgres data modeling.
  • Preferred experience with web payments, subscriptions, billing, invoicing, entitlements, identity and access, B2B account models, analytics, attribution, experimentation, CRM, marketing technology integrations, internationalized web products, or consumer and B2B SaaS surfaces.

Benefits

  • Opportunity to work with a distributed global team across San Francisco, Seoul, Tokyo, Taipei, and Ljubljana.
  • Opportunity to work with users across more than 40 countries and travel to global markets.
  • Join a rapidly growing company that has achieved product-market fit and raised Series C funding.
  • Work on a product intended to improve language learning for millions of people.
Speak

About Speak

201-500 employees

Speak builds an AI-powered language learning app that offers conversation practice, instant feedback, and structured lessons for consumers via a subscription. Headquartered in San Francisco, it first launched in South Korea in 2019 and now supports learners across many markets and 15+ languages. The company is privately held and focuses on speech recognition and tutoring experiences on mobile.

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