As Tech Lead / Android Developer, you will take over the Android version of the Queri app, our flagship product, owning the native codebase end to end: architecture, implementation, releases, and quality.
You will work directly with the CTO and closely with the CEO, designers, and the rest of the team to plan features, ship them to production, and keep the app fast, stable, and loved by fans and creators.
We are a small team that ships quickly, and AI-assisted development is how we work. Claude Code and Claude Design are used daily across the company, and you will be expected to use them as force multipliers.
That said, we are not looking for vibe coders. You should have deep experience shipping native Android apps without AI assistance, and you are expected to understand every line of code that ships, whether you wrote it by hand or generated it with AI.
This is a hands-on leadership role: you will set the technical direction for mobile, lead development as the team grows, and be the person responsible for everything that reaches the Play Store.
Responsibilities
- Own the Queri Android app end to end: architecture, implementation, testing, releases, and Play Store operations.
- Lead the technical direction for mobile, making pragmatic decisions on architecture, libraries, and tooling.
- Plan, build, and ship new features on a regular cadence with the CEO, CTO, designers, and backend engineers.
- Keep the app fast, stable, and reliable, monitoring crashes and performance with Firebase and analytics tooling.
- Use analytics and product metrics to understand user behavior and inform what to build next.
- Build and maintain the app’s integrations with our APIs, push notifications, payments, and media pipelines.
- Use Claude Code and Claude Design daily to accelerate development, prototyping, and UI work.
- Review code, set engineering standards, and raise the bar for mobile quality across the company.
- Coordinate releases end to end: versioning, staged rollouts, store listings, and release notes.
- Help shape the roadmap for the iOS app alongside Android as our mobile footprint grows.
Requirements
- 5+ years of professional native Android development experience.
- A track record of shipping and operating production Android apps on the Play Store.
- Experience shipping Android apps without AI assistance. You are expected to understand every line of code that ships, hand-written or AI-generated.
- Strong Kotlin skills and deep familiarity with the modern Android stack.
- Comfortable using analytics and Firebase (Crashlytics, Analytics, or similar) to monitor and improve a live app.
- Daily working proficiency with Claude Code and Claude Design. AI-assisted development is our standard.
- A self-starter who can own a product area with minimal direction.
- Professional working English. Japanese is not required.
- Comfortable in a small, fast-moving startup environment.
Nice to haves
While not specifically required, tell us if you have any of the following.
- Web or React Native experience.
- Experience being in charge of an iOS app, as owner or lead.
- Experience in entertainment, creator economy, or fan community products.
- Experience with payments, subscriptions, or in-app purchases.
- Experience with mobile CI/CD (GitHub Actions, Fastlane, or similar).
- Experience working with international teams and global consumer products.
Compensation
¥6,000,000 ~ ¥8,000,000 annually.