devnj about --whoami
( who you would be working with )
The person who builds it is the person who runs it.
// One person + AI · Fully online · Netherlands, the EU and Japan
Track record
( by the numbers )
Rankings are not the point.
Business numbers are.
A record of the projects our founder has worked on. Media built from nothing, online shop revenue, digitalisation for a regional business. Different sectors, different sizes — the thing being watched is always the business number.
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0 M PV
Monthly media reach
Built and produced from nothing
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0 M JPY
Food manufacturer, monthly shop revenue
Organic traffic doubled, growth held at +120%
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0 .5M PV
B2B media turnaround
From 600K to an average of 1.5M PV within a year
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0 %
Hotel bookings, year on year
Digitalisation and OTA tuning for a regional hotel
// Under confidentiality, clients are described by sector and size rather than by name. All figures are approximations based on real results
Profile
( the founder )
Keisuke Takenouchi
竹ノ内 啓輔
Web planner & director
I built a B2B web publication end to end — the platform, the writing, the content marketing and the business plan behind it. That publication was later spun out into its own company and runs on its own today. Having taken one thing from nothing to scale is the foundation everything else sits on.
On the content side, a team of three writers and two years took it to three million page views a month. That meant keyword strategy and analysis, but also training writers who had never done the job before. My career started in e-commerce, so building and running shops on Rakuten, Amazon, Yahoo! and EC-CUBE — and reading the numbers afterwards — is familiar ground.
I now work from the Netherlands, building sites in English and Japanese. A European reader and a Japanese reader want the same facts, but in a different order. So whether you are a company here that wants to be taken seriously in Japan, or one that simply wants both languages handled properly, the work starts at structure rather than at translation.
- Company
- DevNJ
- Founder
- Keisuke Takenouchi（竹ノ内 啓輔）
- Based in
- The Hague, the Netherlands
- Languages
- English and Japanese
- KVK No.
- 86988239
- BTW No.
- NL004338311B05
Output
( what comes out of it )
Not just words
on a page.
Articles, images, video, and the site itself. From gathering the raw material to the finished thing, we have kept widening what can be delivered without putting another vendor in the middle.
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01
Articles
Planning, structure, writing and internal links. Written separately for English and Japanese readers, because they are not the same reader.
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02
Images
Cover images, diagrams and banners, generated to match the piece they sit in. Where it matters, a person goes in and fixes them.
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03
Video
Script, voiceover, music and subtitles are all generated, then finished in Premiere Pro. Faceless explainers and service videos.
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04
Websites
Design, build, and the changes that come after launch. This site is built and run exactly that way.
// Video is generated from the script through to music and subtitles, then finished in Premiere Pro before delivery
Skill
( the tools, and how far each one goes )
What we are weak at
is written down too.
Deep engineering is not our strength. In exchange, the line between what AI is handed and what a person decides is drawn clearly. Honest stars are easier to brief against than generous ones.
AI and video
The core of the work now. This is where we differ from an agency.
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Claude Code
The engine behind everything: building and changing sites, and writing, publishing and analysing articles. This site itself was designed, built and is published through Claude Code.
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Premiere Pro
Editing through to export, including AI-generated footage, voiceover and music. Captions, pacing and burnt-in subtitles are all handled here.
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Codex
Used alongside Claude Code to get a second model’s take on an implementation, or to review code that has already been written with a different pair of eyes.
Direction and design
Deciding what to build. Everything that happens before AI is handed anything.
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SEO
Keyword selection tied to where the enquiry actually happens, then titles and outlines along the customer journey. Analysis in Analytics, Search Console and Ahrefs.
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Figma
From polished wireframes to prototypes you can click through and judge. Manuals and client documents are built in Figma too.
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WordPress
Building a theme from scratch is possible, but by default we stay within what an existing theme can be customised to do.
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Photoshop
Less about designing interface parts, more about banners and the everyday image retouching a site needs.
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Illustrator
Same territory as Photoshop: banners and straightforward artwork adjustments.
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XD
Used for wireframes and mock-ups while a site is being worked out.
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HTML5 / CSS3
Comfortable with straightforward markup. Setups built around Sass and heavy build tooling are not our strong point.
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JavaScript
Placing a template and changing values in it, no more than that. The work is deliberately arranged so AI covers this part.
Works
Sites we have built
- 01 補助金ポータル Subsidy and grant portal Direction / Writing / Laravel / Web media
- 02 サイネージモンスター Digital signage comparison portal Direction / Writing / Laravel / Portal site
- 03 保育地図 Nursery and childcare map Direction / Laravel / Portal site
- 04 廃業プラットフォーム Business closure support platform Direction / Writing / LP
- 05 5Gチョイス Mobile and 5G comparison media Direction / Writing / WordPress
- 06 開店オンライン Opening a shop or restaurant Direction / Writing / WordPress, Laravel
FEATURE — 補助金ポータル
A portal covering public subsidies and grants for Japanese businesses. It launched on a custom WordPress theme, reached 100,000 page views within six months, and as enquiries grew it was migrated to Laravel in stages to support member accounts and a far heavier search. The hosting moved at the same time, from shared hosting to AWS (EC2, RDS, ElastiCache and the rest).
Traffic was built on SEO, with paid search tested at roughly ¥300,000 a month. The conversion point was demanding, so the on-paper CVR sat around 12%, but the real conversion rate behind it was low and the budget went back into SEO. Writing alongside the writers and briefing them on each round took it to three million page views a month; it now runs at around one million on average.
// Team: Director 1 / Designer 2 / Frontend 2 / Backend 1 / Writer 2
READY WHEN YOU ARE
The next number on this page is yours.
Send us the address of your current site and we will tell you specifically where to start. Fully online, in English or Japanese.
Book a free consultation