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Founding Product Designer (+ Equity) at Sekai

Jack & Jill
Department:Product Design
Type:REMOTE
Region:USA
Location:United States
Experience:Mid-Senior Level
Skills:
PRODUCT DESIGNUX DESIGNVISUAL DESIGNDESIGN SYSTEMSINTERACTION DESIGNPROTOTYPINGMOBILE DESIGNWEB DESIGNAI TOOLS
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Job Description

Posted on: August 19, 2026

This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers.

She will pick the best candidates from Jack's network.

The next step is to speak to Jack.

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Job Title

Founding Product Designer

Salary

Not Disclosed + Equity

Company Description

Sekai is a $30M venture-backed consumer social startup building the "TikTok for mini apps," an AI-driven platform for interactive content. Backed by top-tier investors including Khosla Ventures, a16z, Mayfield, and A*, Sekai is a lean, elite team of 15 redefining how users create, remix, and share digital experiences globally.

Job Description

As the Founding Product Designer at Sekai, you will define the core user experience and visual language for a new category of AI-driven social entertainment. Working directly with the founders, you’ll own the end-to-end design process across mobile and web surfaces. This high-impact role involves building the design systems that will power the next generation of interactive consumer content.

Location

Remote

Why this role is remarkable

  • Defining a new category of consumer social interaction, often described as the "TikTok for mini apps," at the intersection of AI and entertainment.
  • Backing from world-class investors including Khosla Ventures, a16z, and Mayfield, providing a stable $30M foundation for ambitious product growth.
  • True founding-level ownership where you define the product DNA, visual language, and interaction patterns alongside a lean, elite team of 15.

What You Will Do

  • Own end-to-end design across mobile and web, driving UX for major product flows and making critical experience decisions.
  • Define and evolve Sekai’s visual identity, interaction patterns, and scalable design systems to ensure consistent, high-quality user experiences.
  • Leverage modern AI tools within your daily workflow to rapidly explore, prototype, and iterate on innovative interactive content features.

The ideal candidate

  • Has 2+ years of experience in product design, specifically within consumer-facing or mobile-first products, demonstrating strong visual craft and systems thinking.
  • Must be fluent in Mandarin Chinese to effectively collaborate with the existing team and communicate nuances in product strategy.
  • Is an "AI-native" designer who actively integrates modern AI tools into their design process to accelerate prototyping and enhance product capabilities.

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Who are Jack & Jill?

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.

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.

How does this work?

  • 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 it's a match and the company wants to meet you, they'll make the intro. In the meantime, if you'd like, Jack will send you excellent alternatives.

We never post fake jobs

This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network.

Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description.

We appreciate this can make them look a bit suspect, but there isn't much we can do about it.

Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.

Originally posted on LinkedIn

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