Java RMI Experts in Germany
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Meet FRATCH Experts in Germany, who have recently used Java RMI
Ola Van Dunen
Last position:
IT Lecturer
- IT training in theory and practice for IT specialists in application development and system integration
Jacqueline Haefke
Last position:
Kitchen Appliance Manufacturer
Setting up and enhancing an international subscription management system
Migrating and decommissioning a Hybris-SAP system and integrating Zuora
Implementing numerous interfaces to various systems (external and internal)
Setting up and improving monitoring with Grafana, Prometheus, and Databricks
Introducing logging with Loki
Implementing business requirements using jQuery, Thymeleaf, Spring Boot, Java, Go, and Python
Adjusting and extending the GitLab CI pipelines
Setting up and extending infrastructure as code with Terraform and ArgoCD on AWS
Setting up and running E2E and performance tests
Expanding the Databricks business intelligence solution to provide various KPIs
Responsibilities: Architecture, DevOps, development, unit tests, coaching employees and apprentices, E2E, smoke, and integration tests, agile methods consulting (Kanban, Scrum)
Technologies and methods: Java, Go, Kotlin, Node.js, Spring Boot, SOAP/REST, Quarkus, Thymeleaf, Vaadin, Slack, Jira, Confluence, IntelliJ, GitLab, SQS, Kafka, AWS, Kubernetes, Terraform, Maven, Gradle, GitLab CI, Databricks
Dimitry Kirschner
Last position:
Rollout Expert at Everience Germany GmbH
- Project: Mazars Windows 11 rollout: responsible for the Windows 11 rollout at the Mazars client
- Understanding customer-specific requirements (hardware compatibility, application dependencies, Microsoft AD group policies)
- Implementing hardware logistics at customer sites
- Coordinating IT, business unit, security, and compliance teams
- Updating infrastructure
- Performing driver and firmware updates
- Automating the rollout using scripts
- Notifying users, providing FAQs, change logs, and support contacts
- Technologies: Baramundi Management Center, AD, Azure AD, Intune, Office 365, OpenProject, RDP, Topdesk, MS Teams, PowerShell
Anton Klonov
Last position:
Head of Technical Overall Integration NSC / Hadoop Cloud Development at IABG
Head of technical overall integration NSC (National Secure Cloud project with about 60 employees).
Technical integration of all subprojects into one product, definition of interfaces, basic components of a cloud including hardware, technical architecture of the IABG base.
Development of a Cloud Management Platform (CMP) that can create a private/mixed cloud of any complexity based on a textual description with one click or interactively.
CMP also includes the complete hardware management cycle.
As a foundation, it uses Kubernetes, OpenStack, and Hadoop.
The management layer includes Harbor, Gitea, Longhorn, Keycloak, Rancher and Jenkins, which are automatically configured.
The private cloud can run any customer workloads, including a full Hadoop stack with HDFS, Spark, MapReduce, Mesos, HBase and around 20 other ML/DL technologies.
Hadoop worker clusters can also be automatically installed on bare metal or commodity hardware without Kubernetes.
OpenStack with Nova, Neutron, Ironic, Swift, Cinder, Ceph.
Development of a Java application Rudi: SOAP, REST, containers, database.
Technologies: Kubernetes (K3s, RKE2, Minikube, Harbor, Gitea, Jenkins, Longhorn, Keycloak, Rancher), OpenStack (Nova, Neutron, Keystone, Swift, Ceph, Cinder, Sahara, Magnum, Kayobe, Kolla, Bigrost, Ironic), Hadoop (HDFS, Ambari, Solr, Livy, Ranger, YARN, Tez, HBase, Kafka, Hive, Zookeeper, MapReduce, Spark, Oozie, Flink), virtualization (Kubernetes (K3s), VMware, Oracle), scripting (Ansible, Puppet, Juju, Shell, Groovy, Gradle, Maven).
Hans Leidecker
Last position:
Public administration
- Development of web services for processing vehicle registrations (registration, transfer, deregistration)
- Implemented with Spring Boot, JMS (ActiveMQ), Oracle, Tomcat/JBoss, TomEE, OpenSearch
Allal Kharaz
Last position:
Java Senior Full Stack Developer at Insurance ÖRAG
- Further development of a policy administration system (contract/claims) for the legal expenses insurer ÖRAG.
- My role: Senior Software Developer.
- The team consists of 12 developers.
- Technologies used: Java 8/21, Java EE, Quarkus, WebLogic, JPA, RabbitMQ, JTA, CI, CD, Jenkins, DB2, Maven, Jenkins, GIT (bitbucket) later GitLab, Junit, Elasticsearch, Mockito, Jira, SonarQube, Scrum, React, Workflow
- Migration and modernization of legacy systems: rewrote C and C++ code in Java to improve maintainability, scalability, and performance. Refactored Python into Java, including optimization and integration into modern architectures.
- Study on the use of AI (Codex) for implementing a Java feature. The goal is to compare the time spent and productivity of AI-supported development with a classic implementation by a developer. The results should show how strongly the use of AI affects development time and efficiency.
- Development of the following tariff calculators for the years 2024/2026: private, companies, doctors, farmers, owner-occupied G + H, landlords, traffic, club, top managers, sales representatives, special criminal law, savings bank, municipal, BayGT, doctors, Dehoga
Andreas Müller
Last position:
Managing Director at ESIS-ERP GmbH
- took over as managing director
Discover over 15,000 top freelancers
Statistics of experts using Java RMI
Aggregated from the professional profiles of matched freelancers.
Experience
26 years
Position duration
2.4 years
Positions per freelancer
21
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Banking and Finance, Government and Administration
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
75%
Master's degree or higher
75%
Certifications per freelancer
2
Most common languages
German, English, French
Speak two or more languages
86%
Based on our profile pool as of 30 Aug 2026.
Daily rate distribution
The chart shows how the daily rates of freelancers in this technology in Germany are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows how many freelancers charge within that range.
Average rates of experts in Germany using Java RMI
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 30 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
About the technology
Remote Java calls
Java RMI, or Remote Method Invocation, lets one Java process call methods on objects in another process. It is used for internal business systems, legacy services, and tightly coupled JVM applications that need clear remote interfaces.
Typical work
- Define remote interfaces and data transfer objects
- Set up RMI registry, binding, and lookup flows
- Harden serialization, timeouts, and error handling
- Refactor old RMI code without breaking clients
Ecosystem fit
Strong professionals know core Java, serialization, class loading, sockets, and security basics. They often work with JDK tooling, application logs, and integration layers that wrap RMI behind cleaner service boundaries.
When to bring help
Companies usually need outside expertise when an RMI system is unstable, hard to deploy, or difficult to extend. A freelance specialist can trace remote failures, improve compatibility between client and server versions, and document the contract clearly.
Germany projects
In Germany, Java RMI still appears in enterprise back ends, industrial software, and older internal tools that have not moved fully to newer service styles. Teams often want experts who can work remotely with English documentation or join on-site sessions when older systems need close review.
What strong specialists deliver
- Stable remote APIs with clear versioning rules
- Safer serialization and fewer runtime surprises
- Practical migration paths toward RMI replacement or wrapping
- Clean handover notes for support teams
Frequently asked questions
Quick answers to the questions that come up most around Java RMI.
Java RMI is used to let one Java program call methods on another Java object running in a different process or machine. It is common in legacy enterprise systems, internal tools, and JVM-based applications that were designed around remote objects rather than HTTP services.
RMI is tightly tied to Java objects and Java serialization, so it fits older Java-to-Java systems well. REST is usually easier to expose to mixed clients, while gRPC is often chosen for stricter contracts and broader modern service setups. A good expert can explain whether to keep RMI, wrap it, or replace it.
A strong Java RMI specialist should know core Java, distributed object design, serialization, class loading, and basic network troubleshooting. It also helps to understand security settings, logging, and how client and server versions stay compatible.
You usually need Java RMI help when remote calls fail in production, upgrades break compatibility, or old code is too risky to change without a plan. External experts are also useful when a team needs a quick review before a release or a migration.
Yes. Java RMI work is often done remotely because most tasks are code review, debugging, and interface cleanup. On-site time in Germany can help when access to older infrastructure, internal networks, or local stakeholders makes the diagnosis easier.
Look for clear explanations of remote interface design, error handling, and serialization risks in Java RMI. Good experts show how they isolate failures, keep contracts stable, and write notes that let the next specialist support the system safely.
People often search for RMI or the full name, Remote Method Invocation, when they mean Java RMI. Those terms are especially common in older documentation, support tickets, and code comments.
Java RMI is less common for new greenfield systems, but it still matters where existing Java applications depend on it. New projects usually use it only when they must stay compatible with an established RMI architecture or an older product line.
The average hourly rate of freelancers in Germany who have used Java RMI in their recent projects is 84 €, which corresponds to a daily rate of about 671 € based on an 8-hour working day.
Of the freelancers in Germany who have used Java RMI in their recent projects, 75% hold at least a Bachelor's degree and 75% hold at least a Master's degree.
On average, freelancers in Germany who have used Java RMI in their recent projects have 26 years of professional experience, with a single engagement typically lasting around 2.4 years.
The most common languages among freelancers in Germany who have used Java RMI in their recent projects are German (100%), English (86%), and French (43%).
The most common industries among freelancers in Germany who have used Java RMI in their recent projects are Information Technology (100%), Banking and Finance (86%), and Government and Administration (86%).
The most common business areas among freelancers in Germany who have used Java RMI in their recent projects are Information Technology (100%), Product Development (100%), and Quality Assurance (71%).
Main locations of FRATCH Experts, who have recently used Java RMI
Our freelancers and interim experts are at home across the DACH region — available on-site in the major business hubs or fully remote. Choose a location to discover matched specialists, local market insights and up-to-date availability.
Berlin Hamburg Munich Cologne Frankfurt Stuttgart Dusseldorf Leipzig Dortmund Essen Bremen Dresden Hanover Nuremberg Request a free demo
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Philipp Thomaschewski
FRATCH CEO
