Java modernization · UK
Java modernization services in the UK
Senior engineers on your morning and lunchtime hours, UK GDPR built in, and a fixed price before we start.
Clarigo Infotech upgrades and modernizes Java applications: Java 8 or 11 to Java 17 or 21, older Spring and Spring Boot versions to current releases, javax to jakarta namespaces, and heavy application servers to lightweight containers. Where it helps, we split monoliths into services. Every step is covered by automated tests, so the application keeps working while it is upgraded.
UK businesses most often hire us for AI automation for service businesses, logistics software and fast MVPs for startups.
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.
Value, clarity and no surprises
UK and Irish buyers want straight answers on cost, timelines and data. We give a written quote, weekly demos and plain-English reporting.
Fixed price, agreed up front
A written scope and quote after a free call, so the budget is settled before any work starts.
UK GDPR and data protection
UK or EU hosting, data processing agreements and privacy built into the design.
Weekly progress you can see
Working software every week and access to the code from day one.
Support after launch
The same team stays on with guaranteed response times, not a hand-off to strangers.
What our Java modernization covers
Java version upgrades
Java 8 or 11 to Java 17 or 21 LTS, including library and build-tool updates.
Spring Boot upgrades
Spring Framework and Spring Boot 1.x and 2.x to current versions, including the javax to jakarta move.
App server to containers
WebLogic, WebSphere, JBoss or Tomcat deployments moved to Docker, Kubernetes or managed cloud services.
Monolith to microservices
Carefully split large Java applications into services, only where it improves delivery or scale.
Build and CI/CD
Maven and Gradle cleanup, automated tests and pipelines that make every release safe.
Performance and security
Dependency and vulnerability fixes, JVM tuning and profiling for faster, safer applications.
How we approach Java modernization
Why move to Java 17 or 21
Newer long-term-support versions bring better performance, security updates and language features, and current Spring Boot versions require them. Staying on Java 8 means growing security and hiring risk.
Upgrade path, not a rewrite
We upgrade in stages (build tools, dependencies, language version, framework), testing at each stage, so you always have a working, releasable application.
Built for UK teams
Time-zone overlap
UK and Indian working days overlap by around four to five hours every day, so your team is online for stand-ups, calls and quick decisions during your morning and early afternoon.
UK GDPR
We design products to UK GDPR principles: data minimisation, clear consent, access controls, encryption and data stored in the UK or EU when you need it. We sign NDAs and data processing agreements before work starts.
Billing
Invoices in British pounds (GBP) or US dollars. Typical senior rates are $25 to $49 (USD) per hour, or a fixed price for a defined scope.
Built for UK's key sectors
Financial services and fintech
London banks and challengers need secure, FCA-compliant digital products. Custom software that fits how these teams already work.
Professional services
Law and consulting firms automate document-heavy workflows. From internal tools to customer platforms, built and supported by one team.
Retail and e-commerce
High online shopping adoption makes store performance decisive. We build the platforms, integrations and internal tools this sector relies on.
Creative industries
Media and agencies adopt generative AI for content production. Custom software that fits how these teams already work.
How the hours line up
Our team's hours, in UK time
04:30–14:00
Monday to Friday
Overlap with your working day
09:00–14:00
About 5 hours every day
Daily stand-up
09:30
UK time, plus written updates every evening
Built for how UK works
Local payments
Languages
Data hosting
AWS Europe (London), Google Cloud europe-west2 (London) and Azure UK South, 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.
Java modernization services: questions from the UK
Do you work with companies in the United Kingdom?+
Yes. Clarigo Infotech works with companies across the United Kingdom, including London, Manchester, Birmingham, as part of clients in 20+ countries. UK businesses most often hire us for AI automation for service businesses, logistics software and fast MVPs for startups. We work remotely from India with one in-house team.
What time-zone overlap do we get from the UK?+
UK and Indian working days overlap by around four to five hours every day, so your team is online for stand-ups, calls and quick decisions during your morning and early afternoon.
How do you handle UK GDPR?+
We design products to UK GDPR principles: data minimisation, clear consent, access controls, encryption and data stored in the UK or EU when you need it. We sign NDAs and data processing agreements before work starts.
Which currency do you bill in, and what does it cost?+
We bill in British pounds (GBP) 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.
Can you integrate Stripe or PayPal?+
Yes. We regularly integrate local payment methods such as Stripe, PayPal, Apple Pay, Klarna, Open Banking (Faster Payments), alongside card payments and subscriptions.
Do you work with financial services and fintech companies?+
Yes. Financial services and fintech is one of the UK's key sectors, and we build the platforms, integrations and internal tools this sector relies on.
What time are your meetings in UK time?+
Our team works 04:30–14:00 UK time, so we overlap with your day from 09:00–14:00. Daily stand-ups are usually at 09:30 your time.
Can you upgrade Java 8 applications to Java 17 or 21?+
Yes. We update dependencies, build tools and code in stages, with automated tests at each step, so the application stays releasable throughout.
Do you upgrade Spring Boot 2 to Spring Boot 3?+
Yes, including the javax to jakarta namespace change, configuration updates and library replacements it requires.
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