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Senior Product Engineer

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Senior Product Engineer in USA

  • San Francisco, CA

Responsibilities

  • Own Sauna’s product surface across delegation, progress tracking, approvals, undo, memory, routines, apps, connected Saunas, onboarding, and billing.
  • Design and ship frontend-centered product experiences from rough direction through implementation, feedback, and iteration.
  • Build full-stack features spanning interaction design, client architecture, API routes, database migrations, user interfaces, and analytics.
  • Develop performant local-first interfaces using caching, invalidation, optimistic updates, and IndexedDB persistence.
  • Create realtime, streaming, multiplayer, and cross-platform experiences across web, iOS, Slack, email, iMessage, and Superhuman.
  • Own features after launch and make detailed decisions around loading states, empty states, error handling, keyboard shortcuts, and visual polish.

Requirements

  • Experience shipping and owning complex web products, including multiplayer experiences, large-data applications, streaming interfaces, or realtime UIs.
  • Deep React expertise, including state management, context or store usage, rendering behavior, and reusable component design.
  • Ability to own full-stack features end to end, including migrations, routes, data fetching, UI, and analytics.
  • Strong understanding of performance, caching, invalidation, optimistic updates, and avoiding duplicated network requests.
  • Product judgment, visual taste, autonomy, and willingness to work from rough direction without waiting for a complete specification.
  • Heavy personal use of AI tools and informed opinions about their strengths and limitations; professional AI-product experience is not required.
  • Preferred experience includes LLM-based product interfaces, realtime collaboration with CRDTs or similar systems, local-first architectures, design or strong visual sense, and founding or early frontend engineering.

Benefits

  • Base salary of $180K–$240K plus meaningful early-stage equity, health and dental insurance, 401(k), generous PTO, gym budget, and lunch.
  • Full-time, in-person work five days per week at the company’s Presidio office in San Francisco.
  • Candidates must be based in the Bay Area or willing to relocate before starting.
  • The hiring process may include a paid in-person work trial lasting from a few days to two weeks.

Salary: $180k - $240k/yr

Sauna

Sauna (by Wordware) builds an AI assistant that compiles personal context to automate repetitive workflows—such as scheduling—and augment day‑to‑day knowledge work. It targets professionals who want software that adapts to their patterns, integrating with tools like scheduling apps rather than re...

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