---
title: 'AI Agent Engineer (Coding Agent) at Sekai'
canonical: 'https://feeny.ai/job/ai-agent-engineer-coding-agent-sekai-san-francisco-bamz39dkfd3v'
type: 'job'
last_seen: '2026-09-09'
---

# AI Agent Engineer (Coding Agent) at Sekai

- **Company:** Sekai
- **Location:** San Francisco, CA
- **Employment:** full-time
- **Work type:** remote
- **Posted:** 2026-04-30
- **Last confirmed live:** 2026-09-09
- **Apply:** https://jobs.ashbyhq.com/sekai/6b385ffe-8550-44cb-969e-5fae13d6f42a

## Job description

Sekai is building the TikTok for mini apps — an AI-driven consumer platform where people create, remix, share, and play interactive content instantly. We are a Series A company backed by Khosla, a16z, Mayfield, and A*, with $30M raised to date. We are remote-first across all positions and are looking for ambitious, AI-native builders who want to help shape the next generation of consumer social products. Here are Sekai’s download links:

- Android: https://play.google.com/store/apps/details?id=chat.sekai.app&hl=en_US
- IOS: https://apps.apple.com/us/app/sekai-create-remix-play/id6504506653

## Why we're hiring

We're doubling down on creation quality and reliability. This is a key role with real ownership: you'll run the lane end-to-end and set the technical bar for agent-driven app generation. We want people who think in systems, not solutions. How do we generate fully autonomous software for recreational use? How do we generate it fast? And how do we do it tastefully? This role lives at the bleeding edge of what current AI can do — if those questions excite you, it's for you. You will own

- Designing and owning our agent harness layer Building long-horizon agentic workflows with maximal autonomy
- Developing robust evaluation and quality loops, including eval harnesses, regression testing, and failure taxonomies
- Designing model strategy: routing, benchmarking, reliability, and cost/latency optimization Creating debuggable agent systems with tracing, metrics, alerts, and observability Researching novel approaches and shipping them to production

We're looking for

- You've built agentic systems — tool use, orchestration, retry/repair loops, context management — whether on raw provider APIs or frameworks like LangGraph, PydanticAI, Google ADK, Pi-mono, or Vercel AI SDK.
- You understand the tradeoffs well enough to know when the framework gets in your way. Experience with distributed / real-time systems
- A research-and-ship mindset: you treat open-ended problems as experiments, and you care as much about getting the result into production as discovering it Strong software engineering fundamentals, with depth in Python and/or TypeScript
- A track record of shipping and operating production systems A history of owning hard problems end to end — you can point to systems you built and the outcomes they drove, not just the tech you touched
- Strong product instincts: you can translate user-experience goals into system-design decisions

Bonus points

- Took a customer-facing product from 0 to 1
- Built a coding agent, devtool, IDE assistant, or code-generation pipeline (directly relevant — this is what we do)
- Built evaluation frameworks (automated scoring, regression suites, release gating) Designed MCP-style tool protocols or robust tool interfaces for LLM systems
- Experience training and/or fine-tuning LLMs

## Compensation & benefits

- Competitive compensation: salary + equity
- Full medical / health insurance coverage health insurance

If you are excited about building at the frontier of AI, consumer social, and interactive entertainment, we would love to hear from you. At Sekai, you will work with an AI-native team, move fast, own meaningful problems, and have the flexibility to explore new ideas from an early stage.

## About Sekai

## Company Overview
- **One-liner**: Sekai is an AI-native social platform that lets anyone create, play, and remix interactive mini-apps (called "Sekais") using text prompts, turning software into shareable cultural artifacts.
- **Entity Type**: Private (Series A; raised $20M in June 2026)
- **Headquarters**: Sunnyvale, California, United States
- **Founded**: 2023 (incorporated as Versa AI, Inc.)
- **Founders**: Lucky Zhang

## Core Business
- **Primary industry/industries**: AI-powered social content / User-generated mini-apps / Generative interactivity
- **Target customers**: B2C – consumers (especially younger demographics) who want to create, discover, and remix playful, utility, or fan-interaction mini-apps; also creators and potential celebrity partners.
- **Mission or purpose statement**: To move beyond static content (text, image, video) and build the first ecosystem for "Generative Interactivity" – making software a medium for creative expression and social sharing.

## Products & Services
- **[Sekai Platform (app + web)]**: An AI-driven platform (iOS, Android, and web) where users describe an idea in natural language and a mini-app is instantly generated. Apps can be utilities, quizzes, polls, cards, games, or fan experiences. Users can play, remix others' creations, and share them. Includes a creator monetization path (in development). **Type**: AI-powered SaaS / mobile app

## Market Standing
- **Valuation/Market Cap**: Not publicly disclosed (private company).
- **Key Metric**: Total funding – $26M ($20M Series A co-led by Khosla Ventures and Connect Ventures in June 2026, plus $6M seed led by Mayfield in 2025). Also received $3M in pre-seed/non-equity assistance in 2024.
- **Notable Investors/Partners**: Khosla Ventures, Connect Ventures (joint CAA/NEA), a16z Speedrun, Mayfield, A*, MVP Ventures, 359 Capital, Parable VC, 645 Ventures. Early backing from a16z Games Speedrun.
- **Growth Signals**: 
  - 15 million mini-apps created, with over 200,000 generated daily.
  - Users spend more than 1 hour per day on the app.
  - 550% YoY headcount growth (from ~3 to 16 employees).
  - 4,689 LinkedIn followers (+611.5% yearly).
  - Active hiring: 7 open positions as of July 2026.

## Competitive Advantages
- **First-mover in AI-native social app creation**: Unlike traditional social media, Sekai enables true interactive creation – not just content consumption.
- **Remix culture + low barrier**: Users can create without coding; remixing others' apps lowers friction and drives viral loops.
- **Strong engagement metrics**: >1 hour daily usage signals product-market fit and user “obsession” (per investor Nicole Quinn).
- **Founder track record**: Lucky Zhang previously sold startups to Apple (Yi+ AI) and ByteDance (Blacktail), showing execution and exit experience.

## Strategic Focus
- **Scaling the creator economy**: Sekai plans to help creators earn money from their mini-apps and interactive fan experiences.
- **Expanding partnerships**: Working with CAA on creator and celebrity partnerships.
- **Hiring aggressively** for engineering, product, and AI roles to build out the platform and mobile experience.
- **Broadening beyond anime/fan-fiction** (initial niche) into general-purpose mini-app creation as AI coding models improve.

## Why Work Here
- **Culture of creativity and impact**: Sekai describes itself as the “first AI-native social platform” – employees get to build a new medium, moving beyond doomscrolling to active creation and interaction.
- **Early-stage growth**: Very small team (16 people) with massive funding ($26M) and explosive user traction – high ownership and ability to shape product.
- **Founder with serial success**: Working under Lucky Zhang, who has sold two companies to Apple and ByteDance, provides credible leadership and deep AI/social experience.
- **Remote/hybrid policy**: Likely flexible; job postings on Ashby (e.g., AI Product Engineer) include "Remote" tag. HQ is in Sunnyvale, CA, but team spans US, Indonesia, Singapore, NZ.
- **Notable perks/engineering culture**: Focus on rapid prototyping, AI tools, and user-generated content. Roles posted include "AI Agent Engineer," "Senior Data Engineer," "AI Product Engineer" – strong AI engineering environment.

## Sources
1. [Sekai Official Website](https://sekaiapp.com/)
2. [Sekai LinkedIn Company Page](https://www.linkedin.com/company/sekaiapp)
3. [Axios – Sekai raises $20M (June 2026)](https://www.axios.com/2026/06/01/sekai-mini-app-startup-funding)
4. [Sekai Careers Page (Ashby)](https://jobs.ashbyhq.com/sekai)
5. [Google Play Store – Sekai App](https://play.google.com/store/apps/details?hl=en_US&id=chat.sekai.app)

## Other roles at Sekai

- [Senior Android Engineer](https://feeny.ai/job/senior-android-engineer-sekai-san-francisco-q9h3pwy2ymeq) — San Francisco, CA
- [Founding iOS Engineer](https://feeny.ai/job/founding-ios-engineer-sekai-san-francisco-hey4az5dytnr) — San Francisco, CA
- [Technical Lead](https://feeny.ai/job/technical-lead-sekai-san-francisco-1g5rmq77d78h) — San Francisco, CA
- [AI Product Manager](https://feeny.ai/job/ai-product-manager-sekai-san-francisco-sktzt4dzx3vx) — San Francisco, CA
- [AI Product Engineer](https://feeny.ai/job/ai-product-engineer-sekai-san-francisco-8w89jswmwt1r) — San Francisco, CA