Circleback
Fullstack Engineer
$145K–$240K
San Francisco · On-site · Full-time · Posted Jul 10, 2026
About the job
Build and own product features across web, backend, desktop, and mobile, from idea through production, while helping shape the product and its engineering practices.
What you'll do
- Build across web, desktop, and mobile products and own features through production.
- Develop AI-powered workflows, search, transcription, automations, and performance improvements; experiment with AI models for product features.
- Shape product decisions and build tools and patterns that help the team work faster.
What they ask for
- Experience shipping production software.
- Enjoy building products and care about users as well as implementation.
- Comfort with ambiguity, ownership, and improving systems.
Nice to have
- Background as a founder, early startup engineer, or engineer who has owned features end-to-end.
Pay
$145K – $240K (base salary)
Tools
React, Next.js, Prisma, SWR, Electron, Swift, React Native
AI focus
Work on AI-powered workflows and experiment with AI models to turn useful ideas into product features.
Model-written summary · the original posting is authoritative