Custom Java Application Development Services
We build Java applications from architecture design through production deployment. Our work includes event-driven microservices, high-performance REST APIs, batch processing systems, financial platforms, and multi-tenant SaaS applications. We use current LTS Java versions with Spring Boot and deploy to cloud-native environments.
Every project includes comprehensive automated testing, CI/CD pipeline configuration, and production monitoring. We deliver documented, maintainable code that your team can extend and modify.
Java
What We Do
Dev
Ongoing Java Development and Support
Production support that improves your system over time. We monitor application health, diagnose performance issues, fix bugs, and optimize resource usage. Critical issues get immediate attention while we systematically address technical debt.
We maintain detailed runbooks, implement permanent solutions rather than quick fixes, and continuously improve code quality. Support includes regular dependency updates, security patching, and performance tuning based on production metrics.
Common Java Challenges We Solve
Implement lazy loading and optimize change detection for sub-100ms response times
Architect NgRx solutions for gigabytes of client-side data
Eliminate subscription leaks reducing memory footprint by 70%
Enable independent team deployments with module federation
Handle thousands of concurrent WebSocket connections
Identify bottlenecks through profiling, optimize database queries, implement effective caching
Service communication, distributed tracing, fault tolerance patterns
Gradual refactoring, safe migration strategies, maintaining business continuity
Database optimization, caching strategies, horizontal scaling approaches
Code quality improvement, architecture refactoring, documentation gaps
Our Java Development Workflow
Sprint Planning
Define what we'll deliver in the next two weeks, break down into manageable tasks
Daily Collaboration
Standups to remove blockers, pair programming on complex problems, continuous code reviews
Iterative Development
Ship working software every sprint, get feedback, adjust priorities based on learnings
Continuous Integration
Every commit builds and tests automatically, deploy to staging multiple times daily
Sprint Review
Demo working features, gather feedback, validate we're building the right thing
Why?
Leanware for Java Development
Quality-first engineering
We prioritize clean, maintainable code over quick fixes. Every line is reviewed, tested, and documented
Long-term partnership approach
We focus on building lasting client relationships, not rushing features that create problems later
Proven delivery track record
Successfully completed Java projects since 2020, with clients who return for additional work and client retention of 18 months in average.
AI-enhanced productivity
Our developers use AI tools to eliminate blockers and accelerate development without compromising code quality
US timezone collaboration
Full overlap with your working hours means real-time problem solving and no overnight surprises
"The proactive approach of Leanware in maintaining code quality is exceptional and shows their dedication to our project; their independent work always meets our quality standards."
- Morgan Venable | Head of Product | Pacifica, CA | Groundlight
Tools
Our Java Tech Stack & Tools
Data
Testing
Core
Operations
Infrastructure
Java
Development Services
Build high-throughput applications using Spring Boot, implement microservices architectures, and modernize legacy codebases. Your team gets working software in regular sprints, direct developer access, and code that integrates seamlessly with your existing systems.
Cases
Industries We Serve with Java
Manufacturing
Production systems, quality control, supply chain integration
Enterprise SaaS
Multi-tenant platforms, subscription management, API development
Logistics
Supply chain systems, fleet management, real-time tracking solutions
E-commerce
Inventory management, order processing, customer experience platforms
Healthcare
Patient management systems, clinical data platforms, healthcare integrations
Financial Services
Transaction processing systems, risk management platforms, regulatory compliance
Hear What Startups and Companies Are Saying About Leanware
"Leanware unlocked our frontend dev—now we ship major updates every 2–3 weeks and move faster."
Morgan Venable,
Head of Product Groundlight
“Leanware's adaptability in project methodology greatly enhances our unique startup operations”
Ricardo Patino,
CEO 2MoonCapital
"Leanware is incredibly responsive. Their team is quick to reply and fantastic at tackling problems."
Barb Heathcote,
Manager docbraces
Technical Call, Not Sales Pitch
Developer-to-developer discussion about your actual problems and constraints
Quick integration
Augmentation developers contribute in week one. Projects get working prototypes in first sprint
Full transparency
You get repository access, CI/CD dashboards, and monitoring from day one
We adapt to you
Use your tools, follow your processes, join your meetings. No proprietary methodologies to learn
Process
Java Development Process
Pricing
Java Development Pricing Models
Dedicated Team Model
Full-time developers working exclusively on your projects. Predictable monthly costs with complete control over priorities and sprint planning. Ideal for ongoing product development and long-term initiatives.
Fixed-Price Projects
Defined scope with clear deliverables and timelines. Structured milestone payments based on completed functionality. Suitable for migrations, specific features, or well-defined system components.
Time & Materials
Hourly billing for variable workloads. Transparent time tracking with detailed logs showing actual work done. Works well for maintenance, code reviews, or supplementing your team during peak periods.
Hybrid Model
Combination of dedicated resources and flexible capacity. Core team provides continuity while additional developers scale based on demand. Popular with growing companies needing both stability and flexibility.
Leanware is a Trusted Partner for Great American Companies.
FAQ
Frequently Asked Questions
Developers typically available within two weeks. Integration with your team happens during the first sprint.
Initial deliverables within weeks, production releases within months. Timeline depends on scope and complexity.
We prefer engagements of at least three months to ensure meaningful contribution and knowledge transfer.
Automated testing, code reviews, static analysis, and adherence to your existing quality standards.
Yes, we regularly work with legacy systems, modern applications, and everything in between.
We work with all supported Java versions and help teams migrate from older unsupported versions.
We use your existing tools and communication channels. Regular updates keep everyone aligned.
Yes, we sign NDAs before detailed discussions and follow your security and compliance requirements.
Get Started with Expert Java Developers
Our Latin-based team delivers enterprise solutions faster through AI-powered development. Schedule a free consultation or send us an email today and receive a detailed proposal within 2 days.