Java Development Services
JVM-focused engineering for secure, reliable enterprise systems.
We build high-performance Java backend systems engineered for reliability, security, and predictable scaling for companies running production systems with strict compliance needs. This service is JVM-specific by design: JVM performance, platform modernization, and the Spring ecosystem. Whether you're launching a new platform, modernizing a legacy Java stack (Java 8/11 → 17/21), or scaling mission-critical infrastructure, we deliver production-ready Java systems built to handle real-world load, complex workflows, and long-term growth.
Why Companies Choose Us
Experience with security-critical systems in finance, telecom, and enterprise environments
Deep expertise in the Spring ecosystem and JVM reliability
Strong understanding of EU requirements for security, data handling, and privacy
Ability to modernize legacy stacks without stopping business operations
Cost-efficient engineering with long-term maintainability in mind
Multilingual team accustomed to Mittelstand & international workflows
What We Deliver
Java Microservices & Modular Architectures
- —Java 21, Spring Boot, Spring Cloud
- —Modular systems using PF4J / OSGi
- —Microservices, hybrid architectures, and monolith modernization
- —API gateways, inter-service communication, service discovery
- —DDD, event-driven architecture, CQRS patterns
Enterprise Integrations
- —REST, SOAP, GraphQL
- —Kafka event streaming
- —High-performance RPC (gRPC)
- —ERP/CRM integrations (SAP, 1C, Odoo, Dynamics)
- —Payment gateways & fintech APIs
- —Custom connectors for legacy enterprise platforms
Secure Authentication & Identity Systems
- —Spring Security architectures
- —OAuth2, SSO, JWT, MFA
- —Keycloak realm design & integration
- —Apereo CAS for enterprise-grade SSO flows
- —RBAC models, audit logs, access governance
- —Outcome: audit-ready access control for enterprise workflows without workarounds.
High-Load Data Processing
- —Kafka → PostgreSQL / ClickHouse ingestion pipelines
- —Real-time and batch data processing
- —Distributed workers, async workflows
- —Financial reconciliation & transaction engines
- —ETL pipelines (batch + streaming)
Reporting & Analytical Backends
- —PDF / XLS / CSV engines
- —Aggregated analytics APIs
- —BI integrations (Tableau, PowerBI)
- —High-speed OLAP queries with ClickHouse
- —Time-series data storage & dashboards
Optimization & Reliability
- —CPU & memory profiling, GC tuning
- —SQL optimization, indexing, partitioning
- —Caching with Redis
- —Horizontal scaling strategies
- —Circuit breakers, fault tolerance, retries
- —Load testing and observability setup
- —Outcome: lower response times, fewer incidents, and predictable performance under load.
When You Need Java Development
Choose this service when you need:
Which service is the right fit?
Spring Boot Development
If you need delivery focused specifically on Spring Boot implementations.
View serviceJava Microservices Development
If distributed, event-driven systems and Kafka/messaging are the core focus.
View serviceBackend Development
If you need technology-agnostic backend delivery for APIs and integrations.
View serviceTools & Technologies
Java & Frameworks
- —Java 21
- —Spring Boot
- —Spring Cloud
- —PF4J
- —OSGi
Databases
- —PostgreSQL
- —ClickHouse
- —Oracle
- —Redis
Messaging & Streaming
- —Kafka
- —gRPC
- —RabbitMQ
- —WebSocket
Security
- —Spring Security
- —Keycloak
- —CAS
- —OAuth2
- —JWT
- —MFA
- —SSO
Build & Testing
- —Maven
- —Gradle
- —JUnit 5
- —Testcontainers
Architecture Patterns
- —DDD
- —CQRS
- —event-driven systems
- —modular architectures
Infrastructure
- —Docker
- —Kubernetes
- —Nginx
- —Jenkins
- —GitHub Actions
Founder-Relevant
Case Studies
PlayDeck - Powering Telegram's Gaming Ecosystem
How we built the backend architecture for Telegram's fastest-growing gaming platform.
VTB Bank
Real-Time Data Streaming Platform - High-performance data-streaming platform capable of processing millions of financial messages per second.
Societe Generale
Personalized Advertising & Credit Service Platform - Advanced financial services with real-time personalization.
Sber
Enterprise Data Analytics Platform - Comprehensive data processing and analytics solution for Russia's largest bank.
Togezzer - Social Commerce Platform
Creating a seamless social shopping experience with real-time recommendations.
Vulken FM
Inspection & Asset Management Platform - Internal survey and compliance system for facilities management with mobile inspection app and web-based admin platform.
FAQ
Spring Boot & Spring Cloud are our core for production systems, but we also work across the broader JVM ecosystem and legacy Java stacks when needed.
Yes — monolith refactors, Java 8/11 → 21 upgrades, outdated deployments, SOAP services, etc.
Absolutely — we design systems for large SaaS platforms and high-throughput telecom and enterprise data pipelines.
Yes — ERP, CRM, payment systems, identity providers, & custom enterprise software.
Yes — DDD, CQRS, event-driven systems, integration architecture & migration roadmaps.
Java development for companies operating production backend systems. We support organizations with Java and Spring Boot development, backend architecture, and backend systems based on the specific technical and regulatory context of each project. All services are delivered individually and depend on system requirements and constraints.