Java Microservices Development
Architecture-first distributed systems for scalable products
Modern digital platforms demand reliability, speed and horizontal scalability — and Java microservices remain one of the most established foundations for business-critical systems. At H-Studio, we design architecture-first microservices systems using Java 17/21, event streaming technologies, distributed data patterns and cloud-native infrastructure. Spring Boot is often part of the stack, but the primary focus is system architecture: boundaries, contracts, failure modes, and operational resilience. We engineer backend systems designed for fault tolerance, scalability, observability and real-world production environments across and the EU.
Why Java Microservices?
Java remains the backbone of enterprise software for good reasons:
Our Java engineers leverage this maturity to build systems designed to handle very high event volumes and throughput.
Java Microservices Development Services
1. Microservices Architecture & System Design
We design distributed architectures tailored to your product and growth plan:
- domain-driven design (DDD)
- high-availability microservices
- asynchronous workflows
- event-driven communication
- API gateways & routing
- resilience patterns (circuit breakers, retries, timeouts)
- service discovery & configuration management
Your platform is designed to be modular, scalable and structurally sound.
2. Event-Driven Systems with Kafka & Messaging
We build platforms capable of handling large volumes of real-time events:
- Kafka-based streaming
- RabbitMQ / Pulsar messaging
- exactly-once or at-least-once semantics
- idempotent event processing
- audit logs & replay strategies
- high-throughput ingestion pipelines
Perfect for fintech, payments, logistics, IoT, data aggregation and AI workloads.
3. High-Load Backend Engineering
We optimise Java systems for demanding workloads:
- JVM performance tuning
- thread pool optimization
- caching and distributed caching (Redis, Hazelcast)
- connection pooling
- performance & load testing
- memory profiling
- GC optimization
Your system is designed to remain responsive under high traffic conditions.
4. API Engineering (REST, gRPC, GraphQL)
We design stable API contracts that support long-term platform growth:
- REST APIs with strict versioning
- gRPC for internal high-performance communication
- GraphQL where flexible querying is required
- authentication/authorization frameworks
- schema governance & validation
- resilient error handling
APIs integrate seamlessly with frontends, mobile apps, partner systems and internal tools.
5. Data Architecture for Distributed Systems
We build robust data foundations for microservices:
- PostgreSQL / MySQL / Oracle
- event logs & streaming storage
- schema migrations & evolution
- distributed transactions (Sagas, Outbox patterns)
- CQRS & read replicas
- analytics-ready pipelines
Your data stays consistent across complex distributed workflows.
6. Cloud-Native Deployment on Kubernetes
We deploy Java microservices in scalable, automated environments:
- Kubernetes clusters
- autoscaling policies
- zero-downtime deployments
- Helm / Kustomize
- service meshes (Istio/Linkerd)
- observability (Prometheus, Grafana, Loki, ELK)
- distributed tracing (OpenTelemetry, Jaeger)
This supports reliability throughout different stages of system growth.
7. Migration to Microservices / Modular Monolith
We help enterprises modernize legacy systems safely:
- step-by-step decomposition of monoliths
- modular monolith strategies where appropriate
- hybrid architectures during transition
- data flow redesign
- API-first modernization
- parallel run migration methods
Designed to minimise disruption while improving scalability.
8. Security, Compliance & Governance
Our Java systems meet strict enterprise requirements:
- Spring Security
- OAuth2 / JWT / SSO
- secrets management
- audit trails & access logs
- data flows designed in line with GDPR principles
- penetration testing support
- encryption-in-transit & at-rest
Essential for finance, insurance, healthcare and public sector platforms.
Who We Work With
Our Java microservices power:
We support startups, scale-ups and enterprise teams across and the EU.
What Makes H-Studio Different
Enterprise-grade engineering
We've built systems for banks, telcos and high-volume digital ecosystems.
Production-first mindset
All architectures are designed for uptime, observability and reliability.
Deep experience in Spring Boot, Java & distributed systems
We understand both the theory and the operational reality.
Full-cycle integration
Our microservices integrate with frontends (Next.js/React), mobile apps, CRMs, AI workflows, analytics and DevOps pipelines.
Results we're
proud to show
FAQ
Yes — we specialize in Java 17/21, Spring Boot 3.x, and modern Java features. We also help teams migrate from older Java versions to modern microservices architectures.
Yes — we design and implement event-driven architectures using Kafka, RabbitMQ, and Pulsar. This includes exactly-once semantics, idempotent processing, audit logs, and high-throughput ingestion pipelines.
Yes — we deploy Java microservices on Kubernetes with autoscaling, zero-downtime deployments, service meshes, and full observability stacks (Prometheus, Grafana, Loki, distributed tracing).
Yes — we help enterprises modernize legacy systems with step-by-step decomposition, modular monolith strategies, hybrid architectures during transition, and parallel run migration methods to eliminate disruption.
Yes — we implement Spring Security, OAuth2/JWT/SSO, secrets management, audit trails, data flows designed in line with GDPR principles, and encryption in transit and at rest. Essential for finance, insurance, and healthcare platforms.
Java microservices development for companies building production backend systems. We support organizations with Spring Boot, event-driven architecture, and microservices design based on the specific technical and regulatory context of each project. All services are delivered individually and depend on system requirements and constraints.
System performance, scalability, security and availability depend on architecture, infrastructure, workloads and operational practices. No specific performance or availability guarantees are provided.