Seiko Yamaguchi

Strategy × Execution Consultant

Seiko Yamaguchi山口 聖子

Founder, Consilegy LLC

"We want to, but it isn't moving." I fix that at the structural level.

After 40+ CRM and MA implementations, one thing became clear: revenue does not stall inside a department. It stalls at the seams.

Marketing to sales. Sales to the buyer's internal approval. Closed-won to onboarding. That is where I work.

  • 10 years, 40+ CRM / SFA / MA implementations (HubSpot / Salesforce)
  • 12 years as a project manager, running implementations from requirements to adoption
  • Our own product, Revenue CRM, launched September 28, 2026
Seiko Yamaguchi

I specialize in B2B marketing and sales

CRM design does not start with what sales should enter. What does management need to decide? What has to be measured for that? The CRM comes last.

Swap the tool and, if nobody has decided what to measure, the same spreadsheet gets rebuilt.

Revenue CRM

Our own product, launched September 28, 2026

A CRM that doesn't add work.

Built so that what I saw across 40+ implementations, "nobody reads the records" and "everyone ends up back in spreadsheets", doesn't happen in the first place.

The person who helps companies implement CRM built one and shipped it.

See Revenue CRM

CRM

Design, implementation, adoption

"It's faster to ask the previous rep, so nobody reads the records." I hear this on almost every CRM project.

A summary does not tell you what to do next, so the next rep asks the last one.

Records nobody reads only cost input time. A CRM gets used when it is a place to decide, not a place to read.

Above all, I genuinely love CRM. That is why I build one too. The pattern that survived 40+ redesigns is Revenue CRM.

Why CRM implementation fails without Revenue Architecture

SFA / MA

HubSpot, Salesforce, Marketo

"They're still coordinating internally." Sound familiar?

Stage: Negotiation. Last update: months ago. Ask the rep and you hear "It's decided. Their budget opens in April."

The rep is right. There is just nowhere to write that. Decision and contract are squashed into one stage, so the forecast misses.

MA is the same. If MQL and SQL mean different things in different teams, no tool will fix it. Agree on the words first.

Why SFA turns into a pipeline sheet (Japanese)

The thinking underneath: What Revenue Architecture means (Japanese) / Why RevOps is hard in Japanese companies (Japanese)

What 10+ years in the field have shown me

Across 40+ CRM and MA implementations the symptoms were always different and the place revenue stopped was always the same: the seams between departments.

Our free revenue diagnostic is built on these six.

Marketing to sales handoff

The two teams cannot describe a "sales-ready lead" in the same words. Nobody tracks what happened to the leads that were handed over.

Sales that depends on individuals

Win rates drop when the top rep is away. Qualification runs on personal instinct, not an organisational standard.

Misaligned deal stages

Stages describe the seller's activity, not the buyer's progress. So the forecast misses, every time.

Fragmented data

Board numbers are compiled by hand each month. Salesforce and HubSpot disagree and nobody knows which one is right.

Tools nobody adopted

A few people use the system. Everyone else is back in Excel or a spreadsheet.

Post-sale retention and expansion

The design ends at closed-won. Missed renewals and upsells never show up in the numbers.

How many of 90 days moved?

One of the six, as an example. Split a 90-day sales cycle into days the seller was active and days spent waiting inside the buyer. That alone changes where next year's budget goes.

Same "90 days" seller active waiting inside the buyer Company A 70 days 20 days → hiring reps works Company B 20 days 70 days → another rep changes little 090
Same 90 days. Which side was waiting decides where next year's budget goes.

If 70 of the days were yours, hire. If 70 were the buyer's, another rep changes almost nothing. In Japanese B2B, over 80% of companies need two or more approval levels.

Sources: Winning by Design, "The Bowtie Standard", January 2026, Tables 4.2 and 4.3; IDEATECH × Hiroyasu Kitagawa joint survey (published April 2026, n=307). The full story: Before you hire another Japan rep, split the 90 days.

40+ implementations supported

More than ten years in revenue process design.

Japan market entry for a global e-commerce and tech company

Rebuilt GTM messaging and a three-stage buyer journey.

KPI foundation for a global entertainment company

Rebuilt the KPI framework and decision process on GA4, replacing manual reporting with usable data.

Customer data consolidation for a health-tech company

Unified customer data scattered across 10+ sites. A four-person team recovered about 100 hours a month.

Revenue foundation from zero for an AI venture

No ICP, no CRM, no GTM. In two months: a launch-ready revenue foundation including Japan-specific messaging.

From people who have worked alongside me

As project manager, Seiko Yamaguchi led the digital transformation of the entire event: bringing website operations in-house with a CMS so we could update instantly, introducing MA / CRM tools, digitizing participant data and building an analytics foundation. She built a setup that lets us run the event on a small budget with a small team.

What I love most about her is how she combines deep knowledge with actual real-world experience. She’s not just talking about AI, automation, or marketing strategies… she’s actively helping companies build real systems that drive revenue and growth.

Bianca VogelaarBianca VogelaarBusiness Coach for Freelancers
Founder of Remote Income School

Seiko has a natural ability to connect with people from different backgrounds and create meaningful conversations with clarity, confidence, and authenticity. In international and fast-paced environments, those skills stand out even more.

The first is translated from Japanese. The other two are excerpts from recommendations on LinkedIn.

Selected clients
Nishikawa Co., Ltd. · UCC Ueshima Coffee · Alibaba Japan · Kaizen Platform · Moloco · MSL Japan · elife · Innova · THE MOLTS · Monday's Tiger · Sazae Pty LtdIncludes engagements delivered through Consilegy LLC and as an independent consultant.
Tools
HubSpot · Salesforce · Marketo · Sansan · kintone · ServiceNow · GA4 · Amplitude

Independent for ten years, founded Consilegy in 2025

  • 2025 to present

    Founder, Consilegy LLC

    Revenue Architecture, MA / CRM / SFA design and implementation, adoption support, end to end. Our own product, Revenue CRM, launched on September 28, 2026.

  • Nov 2021 to Jun 2022

    Advisor, Applemint (Taipei)

    Web design and marketing advisory at a Taiwanese advertising agency.

  • May 2017 to Dec 2021

    CEO, plansiks Inc.

    Launched a cross-border e-commerce subscription business. Designed and ran the full revenue process from product to fulfilment to customer management.

  • Dec 2015 to present

    Independent digital marketing consultant and project manager

    Ongoing alongside the companies above. Marketing strategy and PM for B2B companies. MA / SFA / contact-management operations, web analytics, lead generation and nurturing, UI/UX.

  • Sep 2014 to Aug 2015

    Web director and PM, Vanish Standard Inc.

    IT consulting firm. Operations direction, analytics and improvement proposals for client e-commerce sites.

Who is Seiko Yamaguchi?

See the whole board, then look at the people

People call me "Seiko who sees the whole board". Put me in a room where several people are talking past each other and I will sort out who is talking about what, and lay the issues back out in order. The moment the structure becomes visible, the conversation moves.

But people are what actually move, so the design has to account for the manager's position, the field's anxiety, what is said and what is meant.

Bring people along

I am not trying to prove I am right. I want people to reach "OK, let's do it" on their own. Agreement over persuasion.

Don't agree just to be liked

I share what I know, who I know and the chances I get, freely. But if something won't lead to results, I say "I wouldn't do that". I would rather be trusted for years than liked for a moment.

Decide at 70% when it can be undone

I decide fast. If it can be reversed, I place a hypothesis at 70% of the information and fix it while moving.

The reason doesn't have to be impressive

I also do not think everything has to be rational. "I want to" is enough to keep going.

A 90-second speech on a Tokyo stage (in Japanese)

Mission

Add choices to the world. In ten years, 500 people who feel "I am allowed to choose too".

After attending an AI seminar I got curious about AI, and now I'm using all kinds of tools to make a picture book about sushi. I never imagined I'd use AI this much, leaning on it where I can and doing the rest myself, to create something of my own! Thanks to Seiko, I've gone in a direction I never expected, yet one I think I always really wanted.

Chi-chanChi-chanPlus-size model, part-time sushi chef, workshop host, founder of oSUSiTo
Attended Seiko Yamaguchi's AI seminar (translated from Japanese)

Move what you want to do forward. Choices change the future.

These days I travel the world with a single 35 kg suitcase, putting a new way of working and living into practice.

I write articles and a newsletter

Newsletter

Revenue Architecture for Japan-facing B2B teams

Practical notes on connecting marketing, sales and customer support into one revenue flow, delivered by email.

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LinkedIn

Articles and current notes

Articles and day-to-day posts go up on LinkedIn: about 2,000 newsletter subscribers and more than 6,000 followers.

Read on LinkedIn

note (Japanese)

Personal blog

Essays such as "The reason that decides your life doesn't have to be impressive" and "Reducing friction between people with systems", about choosing for yourself and acting on it.

Read on note

Selected writing

Talks

  • The Complete Masterclass for Japanese StartupsSusHi Tech Tokyo 2026 / Google for Startups Tokyo, Apr 2026
  • Designing the "next move" workflow with AI and peopleBizibl Technologies, Apr 2026
  • How to Sell Automation (Demo Day)Fukuoka Startup Collective / Manabu Hubs, Oct 2025
  • SEO to GEO: being found in the age of AI searchMarketing Tuesday / AltSpace Bansko, Jun 2025

Questions I often get

Who is Seiko Yamaguchi?

Founder of Consilegy LLC (Tokyo) and a Revenue Architect. "We want to, but it isn't moving." I fix that at the structural level.

10 years, 40+ CRM / SFA / MA implementations (HubSpot / Salesforce). Our own product, Revenue CRM, launched on September 28, 2026.

What is a Revenue Architect?

Someone who designs revenue as a repeatable structure rather than individual effort.

The path from first contact to close to retention, and how CRM, SFA, MA and data connect underneath it.

Why add an internal approval (ringi) stage for Japanese B2B?

Because after the champion has decided, an independent approval stage (ringi) follows. Over 80% of companies need two or more approval levels; 63.6% take three to eight months (IDEATECH × Hiroyasu Kitagawa, April 2026, n=307).

Leave it out of the pipeline and the stall hides as "under consideration", and the forecast keeps missing.

How do I get in touch?

Use the Consilegy contact form (consilegy.com/en/contact/). The free diagnostic (consilegy.com/en/diagnostic/) shows which of the six seams is leaking first.

For peer conversations, speaking or press, a LinkedIn message is fastest.

Get in touch

For engagements, use the Consilegy contact form. For peer conversations, speaking or press, LinkedIn is fastest.

Contact Consilegy LinkedIn