Apache Derby Experts in Germany
in minutes with vetted freelancers and AI matchingHire experts who work with Apache Derby, Derby, and Java-based embedded database setups. They handle schema design, SQL tuning, upgrade work, and application integration for local and remote teams. Get fast, precise matching with vetted, available freelancers.
Meet FRATCH Experts in Germany, who have recently used Apache Derby
Ornel Franck Wora Yeno
Last position:
Purchasing Manager, Logistics & IT Manager at Onlinehandler
Proactive support of management in business field development & innovation management
New development of a suite of business applications for analyzing valuation, P&L, and market price risk data
Automation of all internal and external business and work processes
Development of AI-based and AI-supported ETL processes as well as data analysis
Business use-case development
Business and work process optimization
Enterprise architecture management
Sales data analysis and forecasting as well as capture
Inventory management & reordering
Supplier management and communication
Customs processing & clearance
Shipping handling & warehouse coordination
Interface management
Technologies used: Microsoft Office 365, Microsoft Teams, JTL-Wawi, JTL-WMS, OTTO Partner Connect (OPC), Amazon Seller Central, DHL Global Forwarding, Jira, Draw.IO, Java (8,17,21,25), Jenkins, SonarQube, Git, Gitea, Spring Boot, Spring Batch, Vaadin, H2, PostgreSQL, Docker, Local LLMs, Postman, JasperSoft Studio, JasperReports
Andreas Klös
Last position:
Test / QA / QS at KARDEX Software GmbH KARDEX Remstar
Testing adjustments to customer requests for warehouse / logistics software
Windows 10 / 11 Atlassian Tool Chain Agile testing / Kanban
Tezcan Dilshener
Last position:
Solution Architect / Project Manager at German Football Association
- Overall responsibility for the project lifecycle from scope definition to completion
- Close collaboration with platform teams, IT leaders, and external service providers
- Application of SAFe principles and structured sprint work
- Creation of a migration roadmap with clear milestones
- Monitoring of the lifecycle: onboarding, repository migration, replication of permissions, and system tests
- Visualization of the architecture with PlantUML and Gliffy as well as documentation in Confluence
- Regular status reports and running knowledge transfer sessions
Daniel Knirsch
Last position:
Project planning and implementation of a 95 kWp PV system at Asset management company
- Analysis of technical and economic feasibility
- Creation of a detailed project plan including time and resource management
- Requesting and evaluating offers, selecting components, and managing suppliers
- Coordination of all involved trades (e.g. electricians, installation companies)
- Monitoring the construction work and ensuring deadlines, budgets, and quality standards are met
- Acceptance and commissioning of the PV system including documentation
- After project completion: optimizing monitoring and supporting grid connection
Khalid Safee
Last position:
IT Infrastructure Coordinator at SAFEE Technology
- GfK Data center IT Infrastructure project onsite coordinator (Equinix DC FR2/FR7) training FEs in Equinix DC Carla, FNT, Jira Confluence, ServiceNow (Change/Problem/Incident MGMT), DCIM, ITSM, ITIL
- Reporting significant incidents as the on-site technical coordinator and initial point of contact for vendor escort and smart hands
- Utilizing CMDB-GUI, NIQ-Browser, CMDB-Filtering-GUI, OSS-Radar, BigBrother, CheckMK, and TTWOS for 2nd and 3rd level troubleshooting support
- Maintaining MDF, IDF, computer rooms, and closets; coordinating with service desk, reception, and security for visitor access
- Managing asset lifecycle including operation, retirement, stocking, and destruction with proper SanDisk procedures
- Leading footprint data centre optimization and reduction in FR2/FR7; handling network, server, storage, desktop, hosting, IT security, video conferencing, and telephone operations
- Coordinating server relocations, fibre optics/copper cable preparations, CMDB updates, and stakeholder cooperation
- Implementing IT infrastructure design, maintenance, configuration, and construction following Dell/HP/Apple ESD safety precautions
- Single POC for change management network, Star Track, backup & storage, cloud, Linux, Windows, EUS teams & Software Centre installs
- Successfully completed DC Footprint Reduction Project 2021/2022 and GfK New Hardware DC Refresh Initiative
- Planning, configuring, and installing Dematic server rooms and switch configurations in Heusenstamm, Wurzburg, Kahl am Main, and Graz Austria
- Providing on-site media equipment setup for HP, hospitals, manufacturers, and laboratories
- Ensuring professional rack and cable management following best practices
- Maintaining up-to-date plant maps accessible to all teams showing technology space and spare locations
- Offering technical assistance for live events, town halls, forums, streaming, and hybrid events on and off campus
- Providing second level support for Poly video conferencing systems across multiple time zones
- Conducting frequent computer room walkthroughs, recording power, cooling, alarm, security threats, and mapping wireless environment and access points
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).
Ioan Dobre
Last position:
Senior Software Developer at ING
- Tribe Home, Product Area 4 - Customer in Life, Squad Cybertron.
- Analysis, design, development, and testing of new requirements for Optimmo, mortgage financing software.
- Analysis, design, development, and testing of the JEE application MWS kredit-baufi.
- Analysis, design, development, and testing of the Wicket Optimmo application.
- Analysis, design, development, and testing of kredit-baufi batch programs.
- Migration of kredit-baufi batches to RHEL9.
- CiL SCS consumer pacts with Finagle.
- CiL SCS touch point architecture integration.
- Team size: 10.
- Tools / Frameworks: OpenJDK Java 17, Kotlin 1.6.0, Azure, Jenkins, Stash, JEE, GitLab, JIRA, Confluence, git, Spring 6.0, Spring Cloud, Spring Data, Hibernate, JPA, JMS, Kafka, Oracle, PL/SQL, Red Hat Enterprise Linux (RHEL), Maven, REST, JBoss, IntelliJ IDEA, Wicket 9 and 10, Istio.
Janusz Mazurek
Last position:
IoT Edge Computing / Self-Driving-Cars at Automotive consulting company
- Platform: Python ecosystem, RHEL 8, K10, AWS IoT Core, AWS Lambda, MLOps
- Software: Java JEE/cloud, IntelliJ IDEA, AWS IoT Core, AWS Edge and Lambda, AWS SageMaker SDK, Docker Compose, Kubernetes, OpenShift 4, Tekton, Flux, Helm charts, JSON/XML technology, Nginx, Apache Spark, OpenAI (GPT Plus, DALL-E 3, Whisper), GAN, GitHub Copilot, AI/machine and deep learning, Jupyter notebooks, TensorFlow 2, Colab, Keras API, Prometheus, Grafana, Conda, Python 3.9, PySci stack (NumPy, pandas, Scikit-learn, matplotlib)
- Responsible for webinar:
- IoT edge computing: architecture, components, resources, management
- IoT edge computing with MicroK8s, designing and creating flows/diagrams for AWS, three-step model for IoT ecosystem
- IoT processes, connectivity, data transfer and deployment, security
- Optimization of edge computing for IoT networks and services (AWS SQS queue, SNS notifications, events, analytics, buttons, device management/defender, Things Graph)
- Machine/deep learning frameworks (models, training, pipeline optimization, deployment in the cloud/at the edge (OpenShift), monitoring workloads with Prometheus and Grafana)
- Performance optimization for low latency/resilience using adaptive ML/DL/RL models for customer IoT data
- Analysis of large sensor data sets with Apache Spark, Kafka clusters
- Kasten K10 data management platform on Kubernetes multi-cluster with Helm chart, deployment, backup/disaster recovery (RTO/RPO), data lifecycle and security management
- Implementation of multilayer artificial neural network (ANN) with TensorFlow 2 and Colab for regression and classification; data analysis and provisioning for applications; development of models for testing and training, deployment of models
- Automation of business streamline processes with AI (Azure OpenAI, Discord bots/Zapier apps AI assistants (IntelliJ, GitHub Copilot))
Jens Grassel
Last position:
Shijou GmbH
- Software architecture and backend development for a marketplace solution / eCommerce retail
- Used Scala, Python, http4s, Next.js, Elasticsearch, PostgreSQL, AWS
Discover over 15,000 top freelancers
Statistics of experts using Apache Derby
Aggregated from the professional profiles of matched freelancers.
Experience
29 years
Position duration
1.7 years
Positions per freelancer
22
Top business areas
Information Technology, Project Management, Product Development
Top industries
Information Technology, Automotive, Banking and Finance
Certification focus areas
Information Technology, Human Resources, Audit
Bachelor's degree or higher
71%
Master's degree or higher
71%
Doctorate
14%
Certifications per freelancer
3
Most common languages
German, English, Spanish
Speak two or more languages
100%
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 Apache Derby
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
Embedded Derby
Apache Derby is a lightweight relational database that often runs inside a Java application. It is used for embedded storage, test environments, small services, and applications that need an SQL database without a separate server.
Common work
- Embedded database setup for Java applications
- Schema design and SQL query work
- Backup, migration, and upgrade planning
- Troubleshooting connection and locking issues
- Tuning for stability in legacy systems
Ecosystem
Derby sits close to the Java stack, JDBC, and application servers. Strong specialists know how it behaves in embedded and network server mode, how to work with SQL dialect details, and how to fit it into older enterprise systems that still rely on Derby.
When to bring in help
Companies usually look for freelance expertise when a Derby-based system is hard to change, slow, or failing during upgrades. That is common in internal tools, long-lived business apps, and regulated environments where replacing the database is not realistic.
What strong specialists do
A strong Apache Derby specialist reads existing schemas quickly and spots hidden risks in transactions, indexing, and locking. They keep changes small and safe, document what they changed, and work cleanly with Java teams that need practical fixes instead of theory.
Germany projects
In Germany, Derby work often fits distributed product teams and support-heavy software environments. Freelancers can work remote for analysis, review, and delivery, then join on-site only when a project needs direct handover or close work with an internal Java team.
Frequently asked questions
The facts hiring teams ask for most often when it comes to Apache Derby.
Apache Derby is used as a small SQL database that can live inside a Java application or run as a separate service. Companies use it for embedded storage, test systems, internal tools, and legacy applications that need a reliable relational database without a large setup.
Apache Derby is the open-source project name, while Java DB was a common name used when it was shipped with Oracle products. Many searchers still use both names, so a good specialist should understand the history and the current Derby packaging.
Apache Derby is usually chosen for Java-centric environments and for systems that already depend on its SQL behavior. H2 is often favored for fast test setups, while SQLite is a different fit because it is not centered on the Java ecosystem in the same way.
A strong Apache Derby specialist usually knows Java, JDBC, SQL, schema design, and application server integration. For older systems, knowledge of migration planning, locking behavior, and data repair is also very useful.
Apache Derby projects often need more than basic SQL knowledge because many issues hide in legacy code, upgrade paths, or embedded runtime behavior. For a small setup, a general Java expert may be enough, but production fixes usually need someone who has worked with Derby directly.
Yes, most Apache Derby work can be done remotely, especially schema review, query tuning, and application debugging. On-site help is mainly useful when a team wants close coordination with local stakeholders or needs hands-on support for a sensitive legacy system.
Look for someone who explains Derby behavior clearly, identifies risks before changing production data, and leaves a clean migration or rollback path. A good Apache Derby specialist also asks about application version, database mode, and the surrounding Java stack before proposing changes.
Apache Derby expertise is often needed when upgrades fail, queries slow down, or an embedded database behaves differently from what the application expects. It is also a sign when the team has Derby in production but little current knowledge of its schema, locking, or runtime setup.
The average hourly rate of freelancers in Germany who have used Apache Derby in their recent projects is 105 €, which corresponds to a daily rate of about 836 € based on an 8-hour working day.
Of the freelancers in Germany who have used Apache Derby in their recent projects, 71% hold at least a Bachelor's degree, 71% hold at least a Master's degree, and 14% hold a doctorate.
On average, freelancers in Germany who have used Apache Derby in their recent projects have 29 years of professional experience, with a single engagement typically lasting around 1.7 years.
The most common languages among freelancers in Germany who have used Apache Derby in their recent projects are German (100%), English (100%), and Spanish (33%).
The most common industries among freelancers in Germany who have used Apache Derby in their recent projects are Information Technology (100%), Automotive (78%), and Banking and Finance (67%).
The most common business areas among freelancers in Germany who have used Apache Derby in their recent projects are Information Technology (100%), Project Management (100%), and Product Development (78%).
Main locations of FRATCH Experts, who have recently used Apache Derby
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
