Ecommerce growth built to convert.scale.convert.retain.

We help international brands launch in Japan, and help businesses in Tokyo and around the world grow sales, with their store, marketing and systems working together.

Find where you’re losing sales → See our work →

Based in Tokyo. Working with clients across Japan, APAC, the UK, EU and US.

Illustrative example

Growth doesn’t break at traffic. It breaks inside your funnel.

The store gets traffic but too few orders.

Customers buy once and disappear.

The team spends too much time managing tools that don’t connect.

You’re launching in Japan and need your brand, website and marketing adapted for Japanese customers.

We fix the parts of your ecommerce funnel that directly impact revenue.

Find out what’s costing you sales →

Ecommerce growth is our core. Everything else supports it.

We focus on the four things that move ecommerce revenue most, and bring in supporting services when your growth needs them.

Core services

Shopify development and web design

Building and improving stores, with UX/UI that makes products easier to understand and buy. Then we keep improving them, testing what lifts your conversion rate.

  • Shopify & Shopify Plus builds
  • Theme development
  • UX/UI design
  • Conversion rate optimisation
  • Platform migration

Email marketing and retention

Klaviyo, LINE, CRM and marketing automation that turn first-time buyers into repeat customers.

  • Klaviyo flows & campaigns
  • LINE messaging
  • CRM set-up
  • Marketing automation
  • Lifecycle strategy

Ecommerce systems

Connecting storefronts, subscriptions, customer data and reporting so day-to-day operations are easier across one market or several.

  • Subscriptions
  • Customer data
  • Reporting
  • Integrations & APIs
  • Multi-market set-up

Japan market entry and cross-border ecommerce

International brands entering Japan, and Japanese businesses expanding overseas, with websites and messaging adapted for local customers.

  • Market entry planning
  • Localisation (EN ⇄ JP)
  • Local websites & messaging
  • LINE for Japanese customers
  • Overseas expansion

Supporting services

Added when they help your store grow, delivered by the same team.

Branding and digital marketing

Brand strategy, visual identity, social media, events and PR for launches and ongoing growth.

  • Brand strategy
  • Visual identity
  • Social media
  • Events
  • PR

Search, social and AI visibility

Helping customers find you on Google, social media and AI assistants like ChatGPT, Gemini and Perplexity: SEO, Google Business Profile, content and structured data that AI tools can read and recommend.

  • SEO
  • Google Business Profile
  • AI search (AEO/GEO)
  • Structured data & llms.txt
  • Social media content
  • LinkedIn for founders

Webflow, WordPress and custom builds

When a project needs more than Shopify: Webflow, WordPress and Drupal sites, apps and custom software.

  • Webflow
  • WordPress
  • Drupal
  • Apps & software

Shopify training

Hands-on training so you and your team can manage the store yourselves: products, collections, content, discounts, apps and day-to-day updates, in English or Japanese.

  • Shopify admin training
  • Products & collections
  • Theme editor & content
  • Discounts & promotions
  • Apps & integrations
  • Team handover guides

Not sure which you need? Take the 2-minute quiz →

Brands we’ve helped grow.

Nozawa Onsen Distillery online store
Nozawa Onsen Distillery Japan
Mirrors by Reflect online store
Mirrors by Reflect Australia
PASURIRE LUXS online store
PASURIRE LUXS Japan
Seventy + Mochi online store
Seventy + Mochi UK
Cool Kids Sticker Co. online store
Cool Kids Sticker Co. Australia
EXO-RECELL online store
EXO-RECELL Japan

How it works.

  1. 01

    Choose a plan or a project.

    Monthly support, or a one-time project with a fixed scope.

  2. 02

    Share your goals and access.

    Your store, tools, brand assets and what you want to change.

  3. 03

    We set the priorities.

    A clear list of what to tackle first, in order of impact.

  4. 04

    We get to work.

    Design, development, email and set-up, done by the specialists you spoke to.

  5. 05

    You review and approve.

    Nothing goes live until you’re happy with it.

  6. 06

    We launch, report and improve.

    Every month we measure what changed and plan what’s next.

Done for you, or done with you.

Hand the work to specialists who plan it and build it, or have us coach your team while you do it yourselves.

Done for you

Flagship engagement

Brand & Market Launch

Our most complete engagement, for brands launching a new brand, a new market or a full rebuild. One team takes you from strategy to launch and through the first months of growth, in Japan or overseas.

Apply for a strategy call →

By application. Limited engagements each year.

  • Brand strategy and visual identity
  • Shopify Plus build or full rebuild
  • Market entry and localisation (EN ⇄ JP)
  • Klaviyo, LINE and CRM set-up
  • Subscriptions, data and reporting connected
  • Launch campaign, social and PR
  • Six months of growth support after launch
  • A senior lead on every workstream

Launch

For brands getting a new store, brand or market off the ground.

What’s included:

  • Store design and build
  • Brand and messaging set-up
  • Email and LINE welcome flows
  • Analytics and reporting set-up
  • Launch support
Book a call

Grow

Monthly support for brands already selling that want more from their store.

What’s included:

  • Ongoing store improvements and CRO
  • Klaviyo and LINE campaigns and flows
  • Monthly priorities and reporting
  • Direct access to the people doing the work
  • Design and development in one team
Book a call

Partner

For multi-brand and multi-market teams that want strategy and execution in one place.

Who is this for?

  • Brands selling in more than one market
  • Teams entering or expanding from Japan
  • Businesses connecting store, CRM and reporting
  • Teams that need strategic input and hands-on delivery
Book a call

Not after a retainer? Book a one-time project.

A fixed scope, a clear quote and a set timeline. Popular projects include:

  • New Shopify store
  • Platform migration
  • Store redesign
  • Klaviyo or LINE set-up
  • Ecommerce Growth Audit
  • Shopify training for your team
Get a project quote →

Done with you

1:1 Coaching

One-on-one coaching with weekly calls to keep you on track while your team does the work.

  • A weekly call with a Birubi specialist
  • A clear plan and priorities for each month
  • Reviews of your store, emails and campaigns
  • Answers between calls
Book a call

Shopify training

Hands-on sessions so you and your team can run the store yourselves.

  • Products, collections and content
  • Discounts, promotions and apps
  • Theme editor and day-to-day updates
  • Handover guides for your team
Book training

Why brands choose Birubi.

BirubiTraditional agencyIn-house team
Ecommerce strategy & platform depth✓PartialRarely
Japan + global market capability✓RarelyPartial
Conversion design & A/B testing as core practice✓PartialPartial
UX tied directly to revenue outcomes✓PartialPartial
You work directly with the founder✓✕✓
Ecommerce lifecycle & retention systems✓PartialRarely
Immediate access (no hiring overhead)✓✓✕

Marketing Managers & CMOs

You own the growth numbers, and they’re not where they should be. You want a partner who cares about sales, not just code.

CEOs of Ecommerce Brands

The product sells. Now the store needs to keep up.

Brands Expanding Globally

You need consistent performance across markets, including Japan. Multi-market ecommerce requires a partner who understands both the technical and commercial complexity.

An extension of your team, not another agency invoice.

株式会社Birubi (Birubi Inc.) is an independent digital agency in Tokyo. We work hands-on, as an extension of your team: the people who plan the strategy are the people who do the work, and every month you can see exactly what we did and what changed. In English or Japanese.

  • 10+years in digital and ecommerce
  • EN · 日本語Fully bilingual, English and Japanese
  • Tokyobased, working across markets
Jonathan Senior, founder of Birubi

Jonathan Senior

Founder

“I built Birubi out of frustration. I’ve run brands myself, so I know what it’s like to hit a wall, or to pay an agency for months and still wonder what they actually did. We’re hands-on, and we work as part of your team.”

LinkedIn →

An independent digital agency in Tokyo, working with clients in Japan and worldwide.

We work with international companies in Tokyo and across Kanto in person or online, with the rest of Japan online, and remotely with brands in APAC, the UK, EU and US that want to launch in Japan or grow sales wherever they sell.

Tokyo

Shinjuku, Shibuya, Ebisu, Minato, Roppongi, Ginza, Marunouchi, Meguro, Shinagawa and Setagaya.

Kanagawa

Yokohama, Kamakura, Hayama, Chigasaki, Fujisawa and the wider Shonan coast.

Chiba

Chiba City, Makuhari and the Makuhari Messe business district.

Japan & international

Online across Japan. Remote for clients in APAC, the UK, EU and US, working across time zones.

Common questions.

What size brands do you work with?

We work across three situations: platform migration, conversion and retention optimisation, and new brand launches built for serious scale.

Can you help if we’re already on a platform?

Yes. Most of our work focuses on improving conversion and retention for brands already on Shopify or Shopify Plus.

How quickly do results happen?

Typically within 8–12 weeks for conversion improvements. Platform migrations follow agreed timelines. Lifecycle and retention systems compound over 3–6 months.

What does the Growth Audit include?

A review of where you’re losing revenue and how to fix it. We look at your platform setup, conversion, checkout and email/retention.

Do you offer one-time projects as well as retainers?

Yes. Not every brand needs monthly support. We take on one-time projects such as new Shopify stores, platform migrations, redesigns, Klaviyo and LINE set-ups, and Growth Audits, each with a fixed scope and quote.

Can you coach our team instead of doing the work for us?

Yes. Our done-with-you coaching gives you a weekly one-on-one call with a Birubi specialist, a clear plan for each month and reviews of your team’s work, so you stay on track while doing it yourselves.

Do you offer Shopify training?

Yes. We train you and your team to manage the store yourselves, from products and collections to content, discounts and apps. Training runs in English or Japanese, in person in Tokyo or online.

Are you a Shopify agency in Tokyo?

Yes. Birubi is a Tokyo-based Shopify and ecommerce agency. We work with brands across Tokyo, including Shinjuku, Shibuya and Ebisu, as well as Yokohama, Kamakura, Hayama, Chigasaki and the Shonan area in Kanagawa, and Chiba and Makuhari. We work with the rest of Japan online, and with international clients remotely across APAC, UK, EU and US time zones.

Can you help us get found on Google and AI assistants like ChatGPT?

Yes. We handle SEO, Google Business Profile, content and the structured data and llms.txt files that help AI assistants such as ChatGPT, Gemini and Perplexity understand and recommend your business.

Do you work with Japanese and English-language brands?

Both. We are a bilingual team based in Tokyo and work in Japanese and English, with Japanese brands expanding internationally and international brands entering the Japanese market.

“Birubi”: View of the Southern Cross.

Most ecommerce brands aren’t short on effort. They’re short on direction.

Navigators used the Southern Cross to find their way. We want to be that fixed point for your business.

“Birubi” is the Gathang word for the Southern Cross, the constellation used for centuries to navigate the southern hemisphere.

ACRUX MIMOSA GACRUX δ CRU

Crux · Southern Cross · Worimi Country, NSW

Ready to fix the gaps and grow your revenue?

Answer a few quick questions about where you are now and where you want to be. We’ll come back knowing where you’re losing sales and what to tackle first, so your first call is about solutions, not setup.

Prefer to email? hello@birubi.co

Find where you’re losing sales →