SPRING BOOT 3 & MICROSERVICES
Work with Spring Boot experts trusted by the world's top tech teams.
Our Java architects engineer massive, highly concurrent enterprise microservices. Work with vetted nearshore experts specializing in Spring Boot 3, Java 21 Virtual Threads, GraalVM native images, and secure Spring Cloud architectures.
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ENDORSED BY ENGINEERS. TRUSTED BY CTOS.
CUSTOM SPRING BOOT SERVICES
Advanced Enterprise Java Engineering
We modernize legacy monolithic Java systems and build blazing-fast, cloud-native backend infrastructure using the absolute latest advancements in the Spring ecosystem.
We decompose fragile monoliths. We utilize Spring Cloud, API Gateways, and service registries (like Eureka) to orchestrate highly resilient, independently deployable microservices that scale dynamically.
We drastically reduce cloud costs. By upgrading your applications to Java 21 and Spring Boot 3, we implement Project Loom's Virtual Threads, allowing your standard Tomcat servers to handle millions of concurrent connections without blocking.
We eliminate JVM startup latency. We utilize Spring Boot 3's Ahead-of-Time (AOT) compilation and GraalVM to compile your Java code directly into native executables, resulting in 50ms startup times ideal for AWS Lambda or Kubernetes scaling.
We engineer real-time data pipelines. For systems requiring massive continuous data streams (like IoT or chat), we utilize Spring WebFlux and Project Reactor to build entirely non-blocking, event-driven architectures.
We lock down enterprise endpoints. We configure complex Spring Security chains, implementing OAuth2/OIDC protocols, JWT stateless authentication, and fine-grained Role-Based Access Control (RBAC).
We optimize complex database interactions. We utilize Spring Data JPA for robust ORM mapping, or implement R2DBC (Reactive Relational Database Connectivity) when building completely non-blocking reactive microservices.
We eliminate Java boilerplate. As a first-class citizen in the Spring ecosystem, we frequently engineer new microservices utilizing Kotlin, leveraging null-safety and coroutines while maintaining 100% JVM compatibility.
We containerize for scale. We engineer lightweight Docker images for your Spring Boot applications, utilizing Kubernetes readiness/liveness probes and Actuator endpoints to ensure perfect orchestration health.
Their engineers perform at very high standards. We've had a strong relationship for almost 3 years.”
The best partnerships are the ones you don't have to worry about. We deliver the kind of technical execution and reliability that builds long-term trust. It's why clients consistently praise our work quality and performance.
OUR SPRING ENGINEERING TEAM
Why tech leaders choose our Java Architects:
We provide seasoned Java experts who understand the nuances of the JVM garbage collector, thread pooling, and complex database transactions. We don't just write controllers; we architect scalable infrastructure.
Spring Boot CASE STUDIES
Numbers of Spring Boot projects delivered.
Our clients rely on us for Spring Boot software that satisfies strict performance, security, and compliance targets. From high-volume payment gateways to HIPAA-aligned healthcare services, our Spring Boot applications stay in production years after launch.
Microservices Migration
Java 21 Virtual Threads
GraalVM Native Images (AOT)
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track record?
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AI EXPERTS
Work with AI-augmented Spring Boot developers.
Every developer we provide uses modern AI coding tools to ship faster than ever while producing cleaner, more consistent code.
TOOLS FOR SPRING BOOT DEVELOPMENT
The ecosystem we use for enterprise Java engineering:
We build heavily resilient infrastructure utilizing the deepest capabilities of the Spring ecosystem. We move enterprises from legacy application servers into agile, containerized deployments.
We build upon the latest Java and Kotlin advancements to ensure maximum performance and developer velocity.
We build fault-tolerant distributed systems that route traffic dynamically and self-heal during outages.
We engineer APIs capable of handling millions of requests using both modern Virtual Threads and Reactive streams.
We manage complex database migrations and ensure optimal SQL query generation using industry-standard tools.
We lock down every API endpoint, ensuring strict integration with enterprise Identity Providers.
We compile standard Java into insanely fast, lightweight native binaries for Kubernetes and serverless environments.
We decouple microservices by engineering highly scalable event-driven architectures.
We guarantee uptime by writing rigorous test suites and exposing deep metrics for tools like Prometheus/Grafana.
We build upon the latest Java and Kotlin advancements to ensure maximum performance and developer velocity.
CLIENT TESTIMONIALS
Get Spring Boot results you can stand behind.
Our work holds up in reviews, in production, and in front of the board.
Digital Commerce
Developed BitForge's Modern Digital Commerce Platform
"Finding engineers who could quickly understand our product vision and execute at a high level was our biggest challenge. Agency consistently provided outstanding developers who became trusted contributors, helping us build BitForge into a reliable and scalable digital marketplace."
Digital Commerce
Developed BitForge's Modern Digital Commerce Platform
BitForge was created to provide a secure digital marketplace for buying and selling software products, digital assets, and downloadable content. Our engineers developed a scalable full-stack platform featuring secure authentication, role-based access control, payment processing, cloud storage integration, and an optimized user experience that supports reliable transactions and future platform growth.
HEALTHCARE
Healthcare & MedTech
"What stands out most about Agency is the quality of its people. They consistently provide talented, experienced developers who quickly become trusted members of our team, helping us deliver reliable software on time and at a high standard."
Networking
Developed new Communication Platform
"Agency helped us transform an ambitious idea into a successful product. Their ability to rapidly source experienced developers and seamlessly integrate them into our team allowed us to accelerate development without compromising on quality."
Networking
Developed new Communication Platform
A growing business needed a modern communication platform to connect teams and customers more efficiently. Our engineers designed scalable backend services, built real-time messaging capabilities, integrated secure APIs, and optimized the user experience to support rapid growth, high availability, and seamless collaboration.
Platform as a Service(Paas)
Scaled and Maintained Deployra's AWS Infrastructure
"Agency has been an outstanding technology partner throughout our growth. Their engineers consistently delivered high-quality solutions, adapted quickly to evolving requirements, and helped us build a reliable deployment platform we're confident will scale with our business for years to come."
Join 50+ companies who count on our Spring Boot developers
FLEXIBLE ENGAGEMENT MODELS
Need extra Spring Boot expertise?
Plug us in where you need us most.
We customize every engagement to fit your workflow, priorities, and delivery needs.
STAFF AUGMENTATION
Extend Your Engineering Team with Senior Talent
Quickly scale your development capacity with experienced software engineers who integrate seamlessly into your existing team. They work within your processes, collaborate in your daily ceremonies, and deliver production-ready code from day one.
DEDICATED TEAMS
Need a dedicated team to deliver products faster?
Build a cross-functional engineering team tailored to your product goals. We assemble developers, designers, QA engineers, and project managers who take ownership of delivery, collaborate closely with your stakeholders, and drive projects from planning through production.
SOFTWARE OUTSOURCING
Need an experienced team to own your entire project?
Entrust your complete software development lifecycle to our experienced engineering teams. From discovery and architecture to development, testing, deployment, and ongoing support, we take full ownership while keeping you informed through every milestone.
Extend Your Engineering Team with Senior Talent
STAFF AUGMENTATION
Quickly scale your development capacity with experienced software engineers who integrate seamlessly into your existing team. They work within your processes, collaborate in your daily ceremonies, and deliver production-ready code from day one.
Need a dedicated team to deliver products faster?
DEDICATED TEAMS
Build a cross-functional engineering team tailored to your product goals. We assemble developers, designers, QA engineers, and project managers who take ownership of delivery, collaborate closely with your stakeholders, and drive projects from planning through production.
Need an experienced team to own your entire project?
SOFTWARE OUTSOURCING
Entrust your complete software development lifecycle to our experienced engineering teams. From discovery and architecture to development, testing, deployment, and ongoing support, we take full ownership while keeping you informed through every milestone.
Kick off Spring Boot projects in 2 - 4 weeks.
We have reps
across the US.
Speak with a client engagement specialist near you.
Discuss solutions and decide team structure.
Tell us more about your needs. We'll discuss the best-fit solutions and team structure based on your success metrics, timeline, budget, and required skill sets.
Onboard your team and get to work.
With project specifications finalized, we select your team. We're able to onboard developers and assemble dedicated teams in 2-4 weeks after signature.
We track performance on an ongoing basis.
We continually monitor our teams' work to make sure they're meeting your quantity and quality of work standards at all times.
Spring Boot FAQ
What tech leaders ask about Spring Boot before pulling us in:
Legacy Java EE required massive, slow application servers (like WebSphere) and endless XML configuration. Spring Boot revolutionized Java by offering 'auto-configuration' and embedded servers (like Tomcat). You can now boot up a production-ready, highly secure Java application in seconds, compiling it directly into a lightweight Docker container.
This is a massive breakthrough for Java (Project Loom). Historically, one web request equaled one heavy OS thread. If an API called a slow database, the thread blocked, causing the server to eventually crash. Virtual Threads are lightweight. Spring Boot 3 can now handle millions of concurrent connections on standard hardware without complex reactive programming.
Java applications traditionally suffer from 'cold starts' because the JVM has to load. With Spring Boot 3 and GraalVM, we execute Ahead-of-Time (AOT) compilation. We compile your Java code directly into a native Linux binary. The application starts in 50 milliseconds and uses a fraction of the memory, making it perfect for AWS Lambda or Kubernetes scaling.
We use the 'Strangler Fig' architectural pattern. Instead of a highly risky 'big bang' rewrite, we implement Spring Cloud Gateway in front of your legacy monolith. We slowly build new, independent Spring Boot microservices, routing specific traffic to the new services one by one until the monolith is entirely decommissioned without any system downtime.
For 90% of applications, traditional Spring Web MVC (especially now empowered by Java 21 Virtual Threads) is the absolute best choice. You only need Spring WebFlux (Reactive Programming) if you are building systems that require continuous, non-blocking data streams—like a real-time chat application, a stock ticker, or massive IoT data ingestion.
Yes, absolutely. Spring officially treats Kotlin as a first-class citizen. Kotlin eliminates the verbose boilerplate of Java (like getters, setters, and null pointer exceptions) while still compiling to standard JVM bytecode. We highly recommend starting new Spring Boot microservices in Kotlin for maximum developer productivity and code safety.
We never write custom security logic. We rigorously implement Spring Security. We configure it as an OAuth2 Resource Server, interacting flawlessly with Identity Providers like Okta, Auth0, or Keycloak. We implement stateless JWT (JSON Web Token) authentication and utilize method-level security to enforce strict Role-Based Access Control (RBAC).
We utilize Spring Data JPA (built on Hibernate) to abstract away tedious SQL boilerplate for standard CRUD operations. However, for massive enterprise systems, junior developers often cause 'N+1 query' performance issues with ORMs. Our senior engineers utilize Entity Graphs, custom JPQL, and native queries to ensure the database layer remains lightning fast.
