Salesforce Architect — Data 360 · Tableau Next · Agentforce
Converting data into value.
I'm Takeshi Hiratsuka, a Salesforce Architect in Tokyo. I design unified data architectures on Data 360, Tableau Next, Slack, and Snowflake — and share what I learn on stages from Dreamforce to TDX and in writing, in English and Japanese. Off stage I coach beginners, helped pioneer the Datablazer community in Japan, and work to bridge the Japanese and global data communities.
~20
talks per year
300+
beginners coached
EN + JP
writing & speaking
Featured story
tableau.com · official customer storyTableau Next × Slack
Leave a Nest turns data into a profit multiplier
Our Tableau Next and Slack implementation at Leave a Nest is published as an official Tableau customer story. With Tableau Semantics, ten years of mature, highly customized Salesforce data became AI-friendly — so 150 employees can ask questions and act on trusted insights without ever leaving Slack.
Read the story on tableau.com →per data lookup,
org-wide in Slack
Speaking
~20 talks per year · JP + globalDecks are shared publicly on Speaker Deck after most talks.
Community & credentials
build · teach · bridgeBuild & lead
I helped pioneer the Datablazer Community in Japan, and I'm the recurring featured speaker behind Tableau Now! — the JTUG & KTUG BI×AI series, renewed from the "Tableau 新時代 / New Era" series I helped start.
I stay active in SFUG, JTUG, and architect meetups in Tokyo.
Teach & coach
I've coached 300+ beginners hands-on, and earned DATA Saber, the Tableau community certification.
After most talks I share the decks publicly on Speaker Deck, so the material keeps working for people who weren't in the room.
Bridge & translate
I work to connect the Japanese Datablazer community with the global Tableau DataFam — translating not just language, but architecture patterns and community culture between Japan and the world.
I publish in both English and Japanese.
- DATA SABER Tableau community certification
- DATABLAZER Salesforce Data Cloud community leader
- SNOWFLAKE SQUAD 2025 cohort
- TABLEAU NOW! Featured speaker, JTUG & KTUG BI×AI series
- JTUG Speaker, Japan Tableau User Group annual meeting
- SFUG CUP 2025 National finalist, Tokyo
- TABLEAU.COM Official customer story feature
Writing & media
EN + JP · sharing in public10 Use Cases of Data Cloud
Official Salesforce Japan guide on practical Data Cloud adoption, published under my editorial supervision.
salesforce.com → Column · ITmediaITmedia author page
Articles on data platforms and making organizations that can truly use AI and IT (in Japanese).
itmedia.co.jp → Blog · EnglishMedium — @marreta27
Conference reports and analytics deep dives in English, including Tableau Conference coverage.
medium.com → SlidesSpeaker Deck
Public decks: SFUG CUP finals, semantic-layer architecture, Data Cloud × Tableau sessions.
speakerdeck.com → Blog · Japanesenote — marreta27
Essays and hands-on notes for the Japanese Salesforce and Tableau communities.
note.com → CompanyLeave a Nest Knowledge
Salesforce consulting partner in Tokyo. Salesforce Japan Partner Award 2025 (Slack category).
k.lne.st →About
Born in 1980, I started in core systems development and data platform engineering. After leading business-systems adoption at SmartNews, I joined Leave a Nest Knowledge — the group's Salesforce consulting arm — in October 2023, where I serve as a board member.
My specialty is unified data architecture on Salesforce Data 360 (Data Cloud), Tableau Next, Slack, and Snowflake: the three-layer path from data lake to data model to semantics, designed so that both people and AI agents can act on trusted data. My personal mission is to grow organizations that can truly use AI and IT — not just install them. I try to give back to the community that raised me by learning in public and coaching the next generation of data beginners.
Off the clock: studying art history through Kyoto University of the Arts' correspondence program, visiting museums on business trips, and reading seinen and science-fiction manga.