Custom Software Development · Since 2004

Software that runs serious businesses.

We build the web platforms, mobile apps and enterprise systems for FENDI, LEGO, BMW — and 200 other teams since 2004. Bilingual delivery from Japan.

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Trusted by FENDI · LEGO · BMW · LE CREUSET · Husqvarna

Ralph Lauren Japan — event reservation and CRM platforms
Featured · Ralph Lauren Japan Event & customer-data platforms

Trusted by product & engineering teams worldwide

2004
Founded in Japan
0+
Projects delivered
0+
Years of delivery
EN·JA
Bilingual team
What we do

Full-cycle software development

One team for the entire build — strategy, design, engineering and launch. No hand-offs, no gaps.

Web Development

High-performance websites and web platforms, engineered to scale with your business.

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Mobile Development

Native iOS and Android apps your customers will actually want to use.

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On-Demand Apps

Marketplace and on-demand platforms, built end to end and ready to grow.

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AI Agents & Automation NEW

AI agents and AI-powered features that automate real business workflows — practical, production-grade, built into your product.

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Dedicated Team

A senior engineering team that plugs into your business and works as your own.

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Product & UX Design

Research-led UX and interface design that makes software easy to adopt and love.

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Idea → Live

Watch an idea become real software

Every stage of the product cycle — owned end to end by one accountable team.

01 Discover

Goals, users and scope — pinned down before a line of code.

02 Design

UX, UI and architecture aligned to the business.

03 Build

Agile engineering in tight, visible sprints.

04 Launch

Tested, secured and shipped to production.

05 Scale

Monitoring, iteration and ongoing growth.

See how we would build yours
Featured work

Proof, not promises

Ralph Lauren · Luxury fashion · Japan

The systems behind Ralph Lauren Japan’s events & customer marketing

We design, build and run two production systems for Ralph Lauren in Japan — a full-stack event reservation and QR-entry platform that manages hundreds of thousands of guests across their Family Sale events, and a secure CRM and data-exchange system that links Japan marketing to the brand’s global databases.

  • Event reservation & QR-entry platform
  • Secure CRM & global data exchange
  • Full-stack engineering on AWS
See more of our work
What we build

Products across every platform

Twenty-two years of delivery across the products that run modern businesses.

Trading & Finance Web Apps

Secure, real-time platforms for trading, payments and financial data — built to meet the demands of regulated industries.

Social Platforms

Community products built to scale.

Business Management Tools

Dashboards and internal systems that streamline operations.

Sports & Fitness Apps

Engaging apps that keep active users coming back.

SaaS Products

Subscription software, from MVP to scale.

E-commerce & Marketplaces

Online stores and multi-vendor marketplaces.

Explore all products
Client voices

Teams that trust us to deliver

Having worked with Chris on several projects, including Databroker Global, I know that his commitment to delivering quality results to schedule is extremely high.

MV M. Van Niekerk CEO, Settlemint / Databroker Global

Our orders are increasing day by day, and we believe the web solution will bring us even more benefits in the future. We really appreciate Chris & the team for the new technology and experience!

OT Ohtsuka Husqvarna Group

A fantastic experience, and my site is perfect. I love the support we get from Chris and the team.

MS Mobility Solutions Bilingual web platform
Why JTS

Why teams choose J Tech Solutions

We are the software partner Japanese and global companies trust to deliver — not just to develop.

About the company

  • Bilingual by default

    Specs, sprints and support in fluent English or Japanese — no translation gap, no lost intent.

  • Senior engineers only

    Your product is built by experienced developers — not juniors learning on the job.

  • 22 years in business

    Established in 2004, with a proven track record across hundreds of projects.

  • End-to-end ownership

    One accountable team from the first idea to long-term support and growth.

How to start

Two ways to work with us

Whether you have a fixed spec or an evolving roadmap, there is a model that fits.

01

Fixed-scope project

A defined build with a clear spec, timeline and budget.

Best for: a product with known requirements

02

Dedicated team

A senior team that works as an extension of yours, month to month.

Best for: ongoing roadmaps and scale-ups

Not sure which fits?

Tell us what you are building — we will recommend the right model.

Book a discovery call
1
You reach out Tell us about your product in a short message or call.
2
Discovery call A 30-minute call on goals, scope and fit — within one business day.
3
Proposal & estimate A clear plan, timeline and quote. No obligation.
4
We start building Kickoff with a dedicated, senior engineering team.
Let's talk

Let's build your custom software.

Tell us what you're building — we'll show you how we'd ship it, and what it takes.

Get a free quote