JAVA DEVELOPMENT SERVICES
Work with Java experts trusted by the world's top tech teams.
We've built Java platforms for startups to Fortune 500s. Work with vetted nearshore Java developers. Kick off projects in 2 weeks.
Get expert help for your JAVA project.
Custom Java Development Services
You've probably used products built by our Java engineers.
We've built enterprise-grade Java applications across industries — from financial systems to e-commerce platforms.
Trusted by Global Businesses
Innovative Digital Solutions
Enterprise Java Applications (Spring Boot)
We build scalable enterprise apps using Spring Boot and Spring Framework.
Production-ready applications with dependency injection and security.
Microservices Architecture
We design and implement Java microservices with Spring Cloud.
Service discovery, API gateways, and distributed tracing.
Legacy Java Modernization
We modernize legacy Java applications to Java 17+.
Performance improvements, security updates, and technical debt reduction.
High-Performance Java Systems
We build low-latency, high-throughput Java applications.
Concurrency optimization, JVM tuning, and memory management.
Java API Development
We build RESTful and GraphQL APIs with Java.
Documentation, versioning, and enterprise integration patterns.
Real-Time Data Processing
We build stream processing apps with Kafka and Java.
Real-time analytics, event sourcing, and CQRS patterns.
Their Java engineers tackled our most complex performance bottlenecks. We couldn't have done it without them.
David Kim
VP of Engineering
Our Java Software Development Team
Backed by
4000+ devs
Why tech leaders choose our Java development teams:
We deliver Java solutions that are performant, secure, and enterprise-ready.
Top 1% Senior Java Talent
Production-Grade Java Delivery
Security, Governance, and Compliance
Java Case Studies
Hundreds of Java projects delivered.
We build Java solutions that support enterprise-scale operations, financial transactions, and real-time data processing without sacrificing maintainability.
Built a High-Throughput Trading Platform
Delivered low-latency order processing and real-time market data aggregation for a global investment firm.
Migrated Legacy Monolith to Microservices
Improved scalability and deployment velocity for a Fortune 500 retailer's e-commerce backend.
Real-Time Analytics Pipeline with Kafka
Created a stream processing architecture handling millions of events per second for actionable insights.
Looking for a team with this kind of track record?
Share your JAVA goals with us.
Tools for Java Development
The ecosystem we use for Java projects:
We deliver Java solutions on a disciplined ecosystem designed for stability and trust. Dependencies are versioned and scanned. Practices are codified in shared runbooks. And every build is traceable.
We build on Long-Term Support (LTS) releases to guarantee years of stability and security. Our development process leverages a mature ecosystem to deliver deterministic, reproducible builds.
Client Testimonials
Get Java results you can stand behind.
Our work holds up in reviews, in production, and in front of the board.
Financial Services
"Their Java engineers transformed our legacy trading system into a modern, high-performance platform. The team's deep understanding of concurrency and low-latency patterns was exceptional.
Sarah Chen
CTO
Financial Services
Modernized Core Banking Platform
"The Java team delivered on time and exceeded our performance expectations. Their proactive approach to identifying bottlenecks saved us months of work.
Michael Soltow
Software Dev. Manager
REPAY
Financial Services
Modernized Core Banking Platform
Repay needed a stronger Java foundation to improve transaction processing and system reliability. Our team modernized the architecture and tightened DevOps workflows to support long-term scale.
8
Team size
99.95%
Uptime
24 mo
Engagement
Financial Services
Developed real-time fraud detection system
"Seven Unique's Java engineers built our real-time fraud detection pipeline from scratch. Their expertise in stream processing and low-latency Java was exactly what we needed.
Leonardo Shapiro
Head of Engineering
azlo
Financial Services
Developed real-time fraud detection system
Azlo needed a real-time fraud detection system to protect customer transactions. Our engineers built stream processing pipelines with Kafka and Flink, reducing detection latency from minutes to milliseconds.
12
Team size
<50ms
Detection latency
18 months
Engagement
E-Commerce
"The Java engineers from Seven Unique consistently outperformed our internal team. Their deep Spring expertise and code quality standards raised the bar for everyone.
Matthew Mecham
VP of Engineering
Lumio
Join 500+ companies who count on our Java developers
Flexible engagement models
Need additional JAVA expertise?
Plug us in where it matters most.
We tailor every engagement to match your workflow, priorities, and delivery goals.
Staff Augmentation
Add senior, production-ready developers who integrate seamlessly into your workflow. They align with your schedule, join your processes, and work just like your in-house team.
Dedicated Teams
Deploy focused, delivery-ready teams to handle complete builds or key workstreams. We align on priorities upfront, and our tech leads drive execution to ensure speed, consistency, and quality.
Software Outsourcing
Entrust us with the full lifecycle from planning to deployment. You define the goals, we take ownership of execution while keeping you aligned at every step.
Go from idea to kickoff in 2–4 weeks
Nationwide presence.
Talk to a client engagement specialist close to you
Define Solutions & Team Structure.
Share your requirements with us. We’ll identify the right solutions and shape the ideal team based on your goals, timeline, budget, and required expertise.
Onboard & Get Started.
Once the scope is finalized, we assemble your team and get things moving. Developers and dedicated teams are typically onboarded within 2–4 weeks.
Continuous Performance Tracking.
We consistently monitor team performance to ensure both quality and output meet your standards at every stage.
Our Awards
Quality Driven
Excellence.
Our dedication to quality, innovation, and client satisfaction drives every digital solution we create for businesses worldwide.
3500+
Projects Completed
375+
Expert Members
2700+
Happy Clients
235+
Running Project
India's Fastest-Growing Companies
Ministry of Micro, Small and Medium Enterprises Certificate
Payment Card Industry Security Standards Council
International Organization for Standardization ISO
India's Fastest-Growing Companies
Ministry of Micro, Small and Medium Enterprises Certificate
Payment Card Industry Security Standards Council
International Organization for Standardization ISO
Java FAQ
What tech leaders ask about Java before pulling us in:
Our Java developers average 10+ years of experience with deep expertise in the JVM, concurrency, and enterprise patterns.
We apply a rigorous multi-stage vetting process that evaluates technical depth, JVM internals knowledge, and real-world problem-solving. Less than 1% of applicants make it through.
We can have a fully vetted Java engineer ready to start within two weeks of your request, and full teams typically onboard within a month.
Extensively. Spring Boot is our primary framework for building production-ready Java applications.
We use profiling tools (JProfiler, YourKit), analyze GC logs, and optimize JVM parameters for your specific workload.
Yes. We have deep experience migrating from Java 8 to modern versions (Java 17/21) and refactoring legacy codebases while preserving business logic.
We use Spring Boot with Spring Cloud, implementing service discovery, circuit breakers, API gateways, and distributed tracing.
We document thoroughly, follow your internal coding standards, and conduct knowledge-transfer sessions. Our goal is always to leave your team fully capable of owning the codebase.
We have deep experience in finance, healthcare, and other regulated verticals. Our engineers are fluent in compliance requirements like HIPAA, SOC 2, and GDPR.
Yes. We can provide dedicated QA engineers who specialize in Java testing frameworks — JUnit, TestNG, Mockito, integration testing, and performance testing with JMeter.
We adapt to your stack. Whether you're using Jenkins, GitHub Actions, GitLab CI, or another CI/CD setup, our engineers integrate smoothly.
