Modernization & migration · Tokyo
Application modernization services in Tokyo
Detailed specifications, careful testing and reliable schedules, with a team overlapping most of your afternoon.
Clarigo Infotech modernizes and migrates legacy applications so they are secure, fast and easy to change again: PHP upgrades and migrations to modern stacks, Java 8 to Java 17 or 21 with current Spring Boot, .NET Framework to modern .NET, and monoliths split into services where it genuinely helps. We migrate step by step behind a safety net of automated tests, so your business keeps running while the software underneath gets better.
Japanese companies most often hire us for AI automation, enterprise systems and mobile apps.
10+
Years of delivery
600+
Projects delivered
20+
Countries served
25-30
Days to a live MVP
Get a free consultation
Tell us what you need. A senior engineer replies within one working day.
Quality, detail and reliability
Teams in Japan and Korea expect precise specifications, thorough testing and schedules that hold. We plan in detail, report regularly and treat quality as non-negotiable.
Detailed specifications
Written requirements, screen specifications and acceptance criteria agreed before development.
Thorough testing
Automated and manual testing with reports at every milestone.
Reliable schedules
Realistic plans, regular written progress reports and early warning of any risk.
Long-term partnership
The same team maintains and improves the product after launch.
What we modernize and migrate
PHP upgrades and migration
Old PHP 5 and 7 apps upgraded to PHP 8, or moved to Laravel, Symfony, Node.js or another modern stack.
Java modernization
Java 8 to Java 17 or 21, Spring to current Spring Boot, javax to jakarta, and old app servers to containers.
.NET modernization
.NET Framework and Web Forms to modern .NET, ASP.NET Core and cross-platform hosting.
Monolith to microservices
Split a large codebase into well-defined services, one piece at a time, only where it improves speed or scale.
Front-end modernization
jQuery, AngularJS and server-rendered pages rebuilt in React or Next.js with a modern, accessible UI.
Cloud-native refactoring
Containers, managed databases, queues and serverless, so the app scales and costs less to run.
How we approach Modernization & migration
Why modernize now
Unsupported language versions stop getting security fixes, hosting gets harder, and every new feature takes longer than it should. Modernizing removes that risk and makes the software cheaper to change, without throwing away the business logic that already works.
Rewrite or refactor?
A full rewrite is rarely the safest path. We assess the code and usually recommend an incremental approach: upgrade what can be upgraded, replace the parts that block you, and keep everything that still works. You get a clear recommendation and cost for each option.
No big-bang switchover
We put automated tests and monitoring around the existing system first, then migrate in small, reversible steps, often running old and new side by side. Your users keep working, and every step can be rolled back.
Documented and handed over
You get updated documentation, a CI/CD pipeline and a codebase your own team can maintain. The same engineers can stay on for support and new features.
Built for Tokyo teams
Time-zone overlap
Japan is three and a half hours ahead of India, so our working days overlap for most of your afternoon, with a stand-up and same-day replies.
Japan's Act on the Protection of Personal Information (APPI)
We design to the APPI: clear purpose of use, security controls, rules for third-party and cross-border transfers, and data hosted in Japanese cloud regions when required. We sign NDAs before work starts.
Billing
Invoices in Japanese yen (JPY) or US dollars. Typical senior rates are $25 to $49 (USD) per hour, or a fixed price for a defined scope.
Where we help Tokyo businesses most
Tokyo companies work with us on AI automation, enterprise systems and mobile apps, with detailed specifications, thorough testing and regular written reports.
Automotive
Carmakers invest in connected-car software and factory automation. Apps for customers, staff and partners, built on one codebase.
Electronics and robotics
Hardware makers need companion apps and embedded AI. We design and ship iOS and Android apps for teams in this sector.
Gaming and anime
Entertainment firms reach global fans through apps and stores. Customer and field apps are where we usually start here.
Retail and convenience
Chains run loyalty apps and cashless checkout. Apps for customers, staff and partners, built on one codebase.
Your working day with us
Our team's hours, in Tokyo time
13:30–23:00
Monday to Friday
Overlap with your working day
13:30–18:00
About 4.5 hours every day
Daily stand-up
14:00
Tokyo time, plus written updates every evening
Local platforms and setup
Messaging channels
Local payments
Languages
Data hosting
AWS Asia Pacific (Tokyo, Osaka) and Google Cloud asia-northeast1 (Tokyo), in your own cloud account, so data stays where your rules require.
How it works
1. Free assessment
We review your code, dependencies, infrastructure and data, then give you a written migration plan, risks and a fixed quote.
2. Plan and safety net
We add automated tests and monitoring around what exists today, so every change can be checked against the old behaviour.
3. Migrate in small steps
Module by module, with both versions running side by side where needed. You see progress in a demo every week.
4. Cut over and support
A planned switch-over with a rollback path, then the same engineers stay on to fix, tune and keep it current.
See what we've built
Try it yourself, free
Free browser tools from our team. No sign-up needed.
Application modernization services: questions from Tokyo
Do you work with companies in Tokyo?+
Yes. Clarigo Infotech works with companies across Tokyo, including Tokyo, Yokohama, Kawasaki, as part of clients in 20+ countries. Japanese companies most often hire us for AI automation, enterprise systems and mobile apps. We work remotely from India with one in-house team.
What time-zone overlap do we get from Tokyo?+
Japan is three and a half hours ahead of India, so our working days overlap for most of your afternoon, with a stand-up and same-day replies.
How do you handle Japan's Act on the Protection of Personal Information (APPI)?+
We design to the APPI: clear purpose of use, security controls, rules for third-party and cross-border transfers, and data hosted in Japanese cloud regions when required. We sign NDAs before work starts.
Which currency do you bill in, and what does it cost?+
We bill in Japanese yen (JPY) or US dollars. Senior engineers typically cost $25 to $49 (USD) per hour, and fixed-scope projects such as an MVP in 25 to 30 days are quoted after a free consultation.
Where will our data be hosted?+
Usually in AWS Asia Pacific (Tokyo, Osaka) and Google Cloud asia-northeast1 (Tokyo), or wherever your data rules require. Everything runs in your own cloud account, so you stay in control.
Can you integrate Credit cards (JCB) or PayPay?+
Yes. We regularly integrate local payment methods such as Credit cards (JCB), PayPay, Konbini payment, Rakuten Pay, LINE Pay, alongside card payments and subscriptions.
Do you support LINE?+
Yes. Customers in Tokyo often prefer LINE and Email and X (Twitter), so we connect chatbots, notifications and support flows to them.
How long does a modernization project take?+
A focused upgrade (for example one PHP or Java application) often takes a few weeks to a few months, depending on size and test coverage. You get a timeline and fixed quote after a free assessment.
Do we have to rewrite everything?+
Usually not. Most projects are a mix of upgrading, refactoring and replacing only the parts that block you. We recommend the lowest-risk path for your situation.
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