# Senior Software Engineer

**Company:** [Circleback](https://hotfix.jobs/companies/circleback)
**Location:** San Francisco, CA
**Role:** Fullstack Engineering
**Salary:** $170k – $250k/yr
**Experience:** 5+ years
**Skills:** React, Next.js, electron, Swift, React Native, ai models, search, transcription, automations
**Posted:** 2026-03-30

> Senior Product Engineer who owns problems end-to-end: deciding on the right product and technical approach, building full-stack features across web, desktop, mobile, and backend, then shipping to paying customers. Requires 3-5 years shipping experience, strong product sense, and AI-native curiosity at a fast-moving YC startup.

## Job Description

## What you'll do
- Take on a problem, figure out the right approach, build it across the full stack, and ship it.
- Understand how a feature connects to everything else, both technically and from a product standpoint.
- Ship across web (React, Next.js), desktop (Electron, Swift), mobile (React Native), and backend.
- Work on AI-powered outcomes, search, transcription, on-device recording, performance, and automations.
- Experiment with new AI models and techniques.
- Raise the bar for the team through code review and building reusable tools.
- Ship real features to thousands of paying customers every week.

## Who you are
- 3-5 years of experience building and shipping software, preferably at startups.
- Made real decisions about the right product and technical approach.
- Eye for detail with strong opinions about how things should work.
- Think about how something fits into the bigger picture.
- Drawn to work that compounds.
- Curious how great products work.
- AI-native and at the frontier of how software gets built.
- Always looking for ways to get better at doing the work.

## Why join
- Ship fast with a high bar for quality.
- Small team, large problem in a new product category.
- Profitable and growing virally.
- Build software that people love and use daily.
- Care about craft and want to build something ambitious with a small, fast-moving team.

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**Apply:** https://hotfix.jobs/jobs/e174e0e5-b82c-4db6-a6c8-1a6e8981f86d
**Canonical:** https://hotfix.jobs/jobs/e174e0e5-b82c-4db6-a6c8-1a6e8981f86d