Fullstack Engineer

Posted 23 Days Ago
San Francisco, CA, USA
In-Office
145K-240K Annually
Mid level
Artificial Intelligence • Productivity • Software • Automation
The Role
Build end-to-end features across web (React, Next.js), desktop (Electron, Swift), and mobile (React Native). Design and architect systems, ship AI-powered features (search, transcription, automations), improve performance and tooling, and influence product and technical decisions while mentoring teammates.
Summary Generated by Built In
About Circleback

Circleback is building the source of truth for everything said at a company–starting with best-in-class AI meeting notes, action items, and search.

Every company runs on conversations — meetings, calls, emails — but almost none of that context is usable after the fact. We’re building the platform that captures, organizes, and acts on all of it, so teams can actually use what they know.

We're a small team backed by Y Combinator. Profitable, growing virally, and thousands of paying customers including PostHog, Browserbase, Gumloop, and more.

Why join
  • We ship fast with a high bar for quality.

  • Small team, large problem: the category we're building didn't exist a few years ago.

  • Profitable and growing virally through word of mouth, not paid acquisition.

  • Build software people actually love and use every day.

  • Free lunch and dinners, competitive salary and equity.

  • Flexible health coverage and 401K matching.

The Role

This is a product engineering role for someone who likes owning problems from idea to production. You'll work across the stack, collaborate closely with the founders, and help shape both the product and how it's built. We're looking for an engineer who's curious, moves quickly, and enjoys figuring out ambiguous problems as part of a small team.

 
What you'll do
  • You’ll build across the product: web with React, Next.js, Prisma, and SWR; desktop with Electron and Swift; and mobile with React Native.

  • Own features from idea to production across web, backend, desktop, and mobile.

  • Work on AI-powered workflows, search, transcription, automations, and performance.

  • Help shape product decisions, not just technical ones.

  • Experiment with the latest AI models and turn useful ideas into product features.

  • Build tools and patterns that make the whole team faster.

  • Work directly with the founders.

 

You might be a good fit if

  • You've shipped production software and enjoy building products, not just implementing tickets.

  • You care about users as much as implementation.

  • You're comfortable with ambiguity and like figuring things out.

  • You improve systems instead of just completing tasks.

  • You like small teams, ownership, and moving quickly.

People who've thrived here have often been former founders, early startup engineers, or engineers who've owned features end-to-end. You don't need that exact background—we care much more about how you think and what you've built.

 
Interview process
  • Intro conversation (30 min)

  • Technical interview (1 hour)

  • Product-focused technical interview (1 hour)

  • Paid two-day work trial in San Francisco

Skills Required

  • Experience building and shipping production software end-to-end
  • Experience with React and Next.js for web development
  • Experience with Electron and Swift for desktop apps
  • Experience with React Native for mobile apps
  • Ability to design and architect systems and raise code quality
  • Experience integrating AI models and working on transcription, search, or automation features
  • Strong product sense and ability to mentor other engineers
  • Willingness and ability to complete a paid, in-person work trial in San Francisco (2-3 days)
Am I A Good Fit?
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The Company
8 Employees
Year Founded: 2023

What We Do

Circleback provides AI-powered meeting notes and automations to help teams capture and organize context from every conversation. The platform supports Zoom, Google Meet, Microsoft Teams, and in-person meetings, automatically generating meticulous notes and action items. By integrating with tools like Slack, Notion, and Salesforce, Circleback turns conversations into a searchable real-time knowledge base, allowing teams to focus on what matters most.

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