Product Manager

Lunaris Musashino-shi, Tokyo July 23 2026
  • 💴 ¥6M ~ ¥9M annually
  • 🏢
    No remote
  • 🗾 Japan residents only
  • 💬
    No Japanese required
    Business English
  • 🧪
    Intermediate level
    3+ years experience required
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About Lunaris

Lunaris Musashino-shi, Tokyo

We started out as an otaku-centric online shop called Solaris Japan, and now offer solutions to other e-commerce platforms. We're small enough to where your ideas and work can have a huge impact but self-funded, and mature enough to be stable.

Key benefits

  • Self-funded and stable
  • Free weekly Japanese lessons
  • Free weekly massage

About the position

We’re seeking an exceptional Product Manager to own product strategy and execution across the portfolio. You’ll work directly with the CEO and have full autonomy to shape roadmaps, define what we build and why, and drive adoption, retention, and revenue targets for both our established apps and the new products we’re launching. This is a builder’s role for someone who wants to own outcomes end to end.

Responsibilities

  • Product Strategy & Roadmap
    • Own the product roadmap across a portfolio of Shopify apps and new SaaS launches
    • Define product vision, positioning, and success metrics for each brand you manage
    • Prioritize ruthlessly using impact, effort, and confidence to focus the team on what matters
    • Balance investment between growing existing apps and launching new products (mobile, games, marketplaces)
    • Translate company goals into clear, measurable product objectives
  • Execution & Delivery
    • Write crisp specs, user stories, and acceptance criteria that engineers can build from
    • Run sprint planning, standups, and reviews with frontend and backend engineers
    • Own the end-to-end delivery cycle from concept to launch, unblocking the team along the way
    • Coordinate with design, engineering, marketing and support to ship high-quality releases on schedule
    • Manage scope and trade-offs to hit committed timelines and targets
  • Core KPIs You’ll Own
    • Roadmap delivery against committed timelines
    • Successful launch of new features & products (mobile apps, games, marketplaces)
    • Track and report on feature adoption

Requirements

  • 3+ years in software product management, ideally for SaaS or B2B products
  • Proven ownership of a product roadmap from strategy through shipped outcomes
  • Strong execution working closely with engineering, design, marketing in an agile environment
  • Clear communication with the ability to write sharp specs and align stakeholders

Nice to haves

While not specifically required, tell us if you have any of the following.

  • E-commerce experience
  • Experience launching new products 0-to-1
  • Familiarity with mobile apps, games, or marketplace products
  • High level technical understanding of software development
  • Design sense and comfort working directly in Figma

Compensation

¥6,000,000 ~ ¥9,000,000 annually.

Plus performance bonus.

Hiring Process

  1. 1

    Online Interview with Founder and Senior Engineer(s) - 60min

    We’ll discuss your engineering background and past experience, and give you a chance to learn more about our company.

  2. 2

    Technical assignment

    You’ll have a chance to show off your technical skills by completing a small assignment. You have some freedom in what language(s) and technologies you use to complete this assignment, so don’t sweat it if you’ve never used Elixir before!

  3. 3

    In-person or remote interview with the team - 90-120min

    If you’re currently based in Japan, you’ll have an opportunity to enjoy lunch or dinner (on us!) at our office in Kichijoji. If you’re based outside of Japan, we’ll have a group video call. Either way, this will be a chance to meet and talk with members from various teams at our company. After that, there will be a technical interview with our engineers where you’ll discuss your solution to the above technical assignment as well as discuss other technical topics.

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