You will own the client application stack across web, desktop, iOS, and Android for a next-generation cloud agent OS. This role involves defining cross-platform strategy, building real-time sync architecture, and optimizing performance. You will work in an AI-first development environment to create the primary interface for knowledge workers using autonomous agents.
Staff Software Engineer - Apps at Well-funded AI productivity startup
Join an elite team at a well-funded AI productivity startup founded by industry veterans to build the client layer of a next-generation cloud agent OS. We are looking for a Staff Software Engineer to own our cross-platform stack across web, desktop, and mobile, driving the real-time sync architecture and high-performance engineering that makes our app feel native everywhere. This is a unique opportunity to shape the future of how knowledge workers interact with autonomous agents. If you thrive in fast-paced, AI-first development environments and want to have an outsized impact on a platform backed by top-tier VCs, this role offers a highly competitive salary and significant equity stake.
Want to apply for this role?
C
Jack finds you jobs at companies like Confidential company. Talk to Jack to get considered for roles that fit what you're great at.
Location
San Francisco, United States
Compensation
$280k-$380k + Equity
Company
Confidential company
Role overview
About the company
Well-funded AI productivity startup
What you will do
- Architect and maintain the cross-platform application stack across web, desktop (Mac/Windows), and mobile (iOS/Android).
- Develop complex real-time sync systems and state management architectures to ensure seamless user experiences across all devices.
- Drive engineering excellence by optimizing application performance and defining the strategy for high-quality, native-feeling interfaces.
Who this is a fit for
- Proven track record of shipping production-grade client applications across multiple platforms with a focus on high-performance UI.
- Extensive experience building distributed systems, real-time synchronization, or complex local-first state management architectures.
- Proficient with AI-assisted development workflows and eager to build agentic systems within a fast-paced, early-stage environment.
Why this role is remarkable
- Lead the architectural direction for a platform designed to become the primary operating system for modern knowledge work.
- Join an elite team founded by industry veterans and backed by top-tier VCs with a significant valuation and runway.
- Build at the cutting edge of AI-assisted development, using advanced tools to accelerate the shipping of high-performance client applications.
How Jack & Jill work together
I get to know what you’re great at, then find roles you’d never find yourself.Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.
I recruit from Jack’s network and make the intro when I spot a great match.And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.
Jack gets to know what you're great at and what you want next, then searches 15 million jobs daily and helps you discover roles at companies like this.
Meet Jack
What happens next?
Jack’s an AI agent for job searching and career coaching. He works for you.
Jill is the AI recruiter working for the company. She recruits from Jack’s network.
If your profile’s a match and Confidential company wants to meet, Jill will make the intro. In the meantime, Jack will send you excellent alternatives.