Java Development Company Delivering Secure, Scalable, and High-Performance Software for UK Businesses

As a Java development company in UK, we build Java apps that stay stable under real load and meet strict GDPR needs. Most UK startups & companies who hire Java developers want predictability, so our 300+ delivered projects and 4–6 week MVP sprints usually give them that steady baseline.

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Why Work with a Specialist Java Development Company Instead of General Developers

Why Work with a Specialist Java Development Company Instead of General Developers 

As a trusted software development company, Square Root Solutions UK offers strong delivery in every Java project.

Our specialist Java developers work in focused enterprise project teams with 6–12 Java-certified engineers per project.

This setup gives 30–40% faster delivery vs generalists and steady 2-week sprint cycles.

You get 98% requirement clarity after scoping, a 95% defect reduction through automated QA, and support from expert Java engineers UK who keep coding standards and architectural quality high across the entire java development firm workflow. 

Java Development Services We Offer

Our Java services support backend engineering and enterprise software for UK teams that need scale and steady delivery. We work across 20+ Java frameworks, handle 1M+ monthly API calls, apply 3-layer security, and keep APIs under 250ms through modular builds, service orchestration, and full-stack Java development.

Custom Java Application Development

We build custom Java applications and strong backend systems with 4–6 week MVP delivery and 2× scalability growth support. Each build uses 80% automated test coverage, handles 10k–500k daily active users, applies DDD, follows a clean CI/CD pipeline, and helps UK businesses build Java software with confidence.

Enterprise-Grade Java Software

We create enterprise Java systems using microservices, the Spring framework, and 5–12 microservices per system. Each setup supports 1M–5M transactions, keeps 150–250ms response time, offers 99.9% uptime, and uses service mesh, load balancing, and an API gateway backed by a skilled Java development company.

Java Migration, Modernisation & Re-Engineering

We upgrade legacy Java systems through structured modernization services using 6–12 week upgrade cycles. Teams gain 40–60% performance improvement, 50–70% technical debt reduction, and a 98% migration success rate through monolith-to-microservices moves, system audits, careful refactoring, migration roadmap planning, and strong Java development services execution.

Java Integration with CRMs, ERPs & Third-Party APIs

We manage CRM ERP integration using secure API connectors and 25+ supported integrations. Each project delivers a 2–4 week integration timeline, 99% data sync accuracy, OAuth2 JWT security, and smooth links with Salesforce, SAP, HubSpot, middleware tools, and full Java API development for enterprise system integration.

Java-Based Cloud Deployment

We deploy cloud-native Java systems on AWS, Azure, and GCP with autoscaling up to 10× load, zero-downtime releases, and 24/7 monitoring. Each build supports 2–3 cloud environments, uses Kubernetes and Docker, and offers clear Java cloud migration and cloud hosting for Java teams across the UK.

Java Support, Maintenance & Performance Optimisation

We provide Java maintenance and steady support services with 95% tickets resolved in 24 hours and 20–40% JVM performance improvement. Teams receive 1–2 optimisations per month, 24/7 support options, managed Java services, incident response, monitoring dashboards, and planned patch cycles to keep systems stable.

Industries We Serve in the UK 

We support 15+ UK industries served, covering finance, healthcare, retail, logistics, and the public sector with clear delivery and steady performance. Our healthcare systems aligned with NHS and GDPR keep data safe, and finance-grade FCA compliance protects transactions. We build retail apps handling 100k+ orders per month and logistics apps processing 50k+ shipments. Each project applies industry-specific Java solutions, domain-driven systems, compliance, workflow automation, and secure integrations for predictable results.

Our Java Development Process Built for UK Businesses

Our Java development process follows a clear 6-phase delivery method with 2-week sprint cycles, weekly demos, and 100% code access from day one. This structure supports 8–20 week project completion, a steady enterprise Java workflow, and consistent agile delivery with sprint ceremonies, backlog refinement, and accurate documentation across agile development UK teams.

Our delivery method follows a 6-phase Java development process with 2-week sprint cycles, weekly demos, and 100% code access from day one. UK clients usually want clarity, so the process covers 8–20 week project timelines, a clean agile workflow, backlog refinement, technical grooming, sprint ceremonies, and documentation updates that give stakeholders constant visibility.

Contact Us
1

Discovery & Technical Scoping

We run a discovery workshop that supports clear requirement analysis through 3–5 day scoping. Teams document 20–40 requirements, map 5–8 technical risks, and complete technical discovery using requirement workshops, stakeholder interviews, and early specification planning for a stable start.

2

Architecture Planning

We prepare architecture design for clean microservices using a 1–2 week architecture blueprint. Each plan includes 5–12 microservices, a 10× scalability margin, and steady software architecture UK standards supported by modular system design, a service registry, a load balancer, and an API gateway.

3

Agile Sprint-Based Development

We drive agile sprints with clear iterative development, steady 2-week sprints, and 3–7 features per sprint. Teams run 30–45 minute weekly demos, push daily code commits, and follow agile Java delivery through a defined sprint workflow using Jira, sprint planning, and retrospectives.

4

Quality Assurance, Automated Testing & Security Checks

We apply QA automation and steady security checks using 80% automated test coverage and 20–50 test cases per module. Each cycle completes a 3-layer security audit, with penetration testing every 4–8 weeks supported by a secure Java lifecycle, automated QA testing, Selenium, OWASP, and static code analysis.

5

Deployment, Monitoring & Handover

We manage a clear deployment pipeline with 5–10 deployments per week via CI/CD and 24/7 monitoring. Each release includes 20–30-page handover documentation, an under 2% acceptable error threshold, and structured release management using Java deployment, Prometheus, Grafana, and GitOps.

6

Post-Launch Support & Continuous Improvement

We provide ongoing support with planned optimisation cycles, resolving 95% issues within 48 hours and offering a 12-month optional support warranty. Teams receive 1–2 monthly optimisation updates, strong Java lifecycle support, continuous improvement, incident management, patch releases, and steady maintenance routines.

Healthcare Providers Choose Our Telemedicine Software Expertise

Why UK Companies Trust Our Java Development Expertise

UK companies choose our java development company because we give clear trust signals that prove steady delivery and strong communication.

Our teams hold a 4.9/5 client satisfaction score, a 98% delivery success rate, and support 60+ repeat UK clients.

We apply 12+ years Java experience on every project and act as a trusted Java partner in UK for startups and companies that need a reliable software company with clean procurement compliance, real case studies, and verified reviews that show consistent results.

Tools, Frameworks & Technologies We Use

We support Java frameworks across a full Java toolchain that includes 20+ frameworks supported and 10+ databases supported for UK projects that need steady performance.Our teams use a modern Java stack with Java developer tools such as IntelliJ, Maven, Gradle, Docker, and Kubernetes. We complete 5–10 CI/CD deployments per week, giving businesses predictable updates and clear delivery through a setup built for scale and simple workflows.

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GraphQL

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Firebase

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Golang

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PHP

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Java

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AWS

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Azure

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Google cloud platform

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Microsoft Dynamics

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IBM Cloud

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Oracle Cloud

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DigitalOcean

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Heroku

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Android

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IOS

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Linux

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Windows

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macOS

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Chrome OS

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MSSQL

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MySQL

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PostgreSQL

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Oracle Database

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SQLite

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IBM Db2

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Amazon RDS

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MongoDB

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Amazon DynamoDB

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Elasticsearch

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Google Spanner

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Docker

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Jenkins

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Kubernetes

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GitHub Actions

Engagement Models for UK Clients

We offer clear engagement models for UK companies that need simple onboarding and steady delivery. Each setup supports outsourcing models, 3 engagement options, 2–5 day onboarding, and teams of 2–15 Java engineers, with hire Java developers UK, outsourcing pricing UK, SOW, procurement, and timeline planning handled from day one.

Dedicated Java Development Team

A dedicated team of skilled Java engineers provides 2–15 full-time Java developers, 100% exclusive allocation, monthly billing cycles, hire dedicated Java team, team scaling, and capacity planning.

Dedicated Java Development Team
Fixed-Price Project Model

Fixed-Price Project Model

A fixed-price contract supports a scoped project with 20–40 requirements defined, 3–6 milestone payments, 90–95% scope accuracy, fixed-scope development, acceptance criteria, and SOW alignment.

Time & Material Model

T&M billing enables flexible delivery at £25–£45/hour and allows teams to adjust scope by 20–50% with sprint-by-sprint billing, a flexible development model, resource allocation, and dynamic scope control.

Time & Material Model

Frequently Asked Questions

A Java development company builds, maintains, and supports software applications using the Java programming language. These companies develop custom enterprise solutions, mobile apps (especially Android), web applications, and backend systems. They also offer Java consulting, code optimization, migration, and integration with databases or third-party services.

Square Root Solutions UK develops custom Java applications including mobile apps, enterprise software, and backend systems. Their focus includes Android development, cross-platform solutions, and integration with third-party services. They use Java to build scalable, secure, and high-performance digital products tailored to client needs.

Yes, you can hire dedicated developers from Square Root Solutions UK. They offer flexible hiring models for full-time, part-time, or project-based Java developers. Clients can choose developers based on project requirements, ensuring focused development, direct communication, and faster delivery of custom software solutions.

Yes, Square Root Solutions UK offers post-launch support for Java development solutions. Their services include bug fixes, performance monitoring, updates, and feature enhancements. Ongoing support ensures the application remains secure, scalable, and compatible with evolving technologies and user needs.

Java application development typically costs between £10,000 and £100,000, depending on complexity, features, and project duration. Simple apps with basic functionality cost less, while enterprise-level or highly customized systems cost more. Factors like team size, development hours, and integration needs also influence pricing.

A Java development team should have skills in core Java, object-oriented programming, Spring Framework, Hibernate, and RESTful APIs. They must understand databases like MySQL or MongoDB, version control (Git), and testing frameworks (JUnit). Strong problem-solving, debugging, and deployment skills are also essential for high-quality Java development.

The main difference between UK and offshore Java development is cost and communication. UK teams offer easier collaboration, time zone alignment, and high-quality standards, but at higher rates. Offshore teams provide cost savings and larger talent pools, but may face challenges in communication, time zones, and quality control.