Oracle Database Expert in Hanover
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Meet FRATCH Experts in Hanover, who have recently used Oracle Database
Priyanka Sarang
Last position:
Business Consultant (Software Engineering) at Boehringer Ingelheim
- Developed cloud-native enterprise applications on SAP Business Technology Platform using Node.js, SAP UI5, and RESTful APIs, delivering solutions across training management, procurement, employee information, and logistics domains
- Served as the primary developer for the maintenance, enhancement, and production support of three enterprise applications, delivering new features, resolving production issues, and coordinating releases with business stakeholders
- Experienced in leveraging AI-assisted development tools such as Microsoft Copilot to accelerate feature development, generate code, prototype solutions, and support application migration and modernization
- Designed backend services, domain models, and SAP Fiori/UI5 interfaces, implementing business workflows, role-based access control, validations, scheduling, reporting, and data import/export capabilities
- Designed and integrated enterprise services with SAP SuccessFactors, SailPoint, ERP systems, and external Learning Management APIs, including automated synchronization for 11,000+ user data
- Designed and implemented AMQP-based event-driven services processing up to 500 RFID parcel scan events per day for a logistics application
- Managed deployments and application operations using CI/CD pipelines, SAP Solution Manager, SAP BTP Cockpit, Kibana, and cloud monitoring tools, performing root-cause analysis and resolving production incidents
- Managed application dependencies by resolving npm package version conflicts and remediating critical and high-severity security vulnerabilities, ensuring production compliance and application stability
- Collaborated with architects, business users, SAP governance teams, and distributed Agile teams throughout technical design, code reviews, sprint planning, documentation, and software delivery
Mubashar Ali
Last position:
Interim Accounting Manager at JOSEPH DRESSELHAUS GmbH
- Report to the head of accounting/finance/controlling and handle ad hoc requirements from all accounting and finance departments in SAP 4, including advance payments, payment plans, master data updates, and intercompany reconciliation
- Manage payment regulators such as Nordwest and Eurobaustoff & EDE reconciliation, AVIS reconciliation, travel expense approvals and reconciliation with credit card statements, factoring reconciliation, payment blocks, etc.
- Support the annual audit and insolvency reporting
Michael Serejenkov
Last position:
Data Scientist at CompuGroup Medical Deutschland AG, docmetric GmbH
Development of AI-based and classical models for analyzing medical and patient data, including medication analyses, diagnosis analyses, forecasts, procedure analyses, dosage analyses, comorbidity analyses, prescription analyses, patient potential analyses, and referral profile analyses. Analyses in the area of Real World Evidence.
- Gathering customer requirements
- Planning the subproject
- Designing and defining KPIs
- Designing and developing models and visualizations of the results using customer dashboards
- Developing and implementing DWH adjustments
- Deriving recommendations for action
Methods, technologies: Simulation, Artificial Intelligence, Python, R, SQL, Microsoft Power BI, Amazon Web Services, Elasticsearch, PostgreSQL, Databricks, Multivariate Statistics
Dennis Schuchardt
Last position:
Lead Full Stack at Self-employed
- Billing software for the second-highest security authority of the Federal Republic of Germany
- Passed security clearance level 2
- Frontend and backend development
- Consulting on the introduction, design, implementation, and development of technical components
- Code reviews, component testing, module testing, group module testing
- Implementation of UI/UX design
- Used technologies: HTML, CSS/SCSS, JavaScript, Node.js, Vue 3, PrimeVue, Webpack, Vuex, Momentum, Jest, NPM, Lodash, Java 17, Spring Boot, Lombok, GraphQL, JUnit, Maven, Keycloak, Python, Docker, CI/CD, Kubernetes, Oracle SQL, Postman, Storybook, Microservices, Monorepo, Jira, Confluence, Scrum, GitLab, AWS, IntelliJ, Visual Studio Code, Neovim, XLSX, responsive Webdesign, BITV 2.0 (U.S. Section 508) / WCAG 2.2
Martin Schaefer
Last position:
MS Fabric Certification
MS Fabric certification with creation of pipelines and notebooks in Fabric using data from Azure, Azure Repos, Azure Boards, and GitHub. Data ingestion via OneLake Explorer, direct IP connection, and API (REST) are the main topics
Jürgen Windheim
Last position:
IT Project Manager at Daimler Financial Services
- Implementation of a financing and leasing system for Market NL (Miles / Miles MMP) from supplier Sofico
Friedhelm Matten
Last position:
Project at Deutsche Gesetzliche Unfallversicherung
- Collaborated on HL7 FHIR profiling and validation
- Created CodableConcepts (code/value systems), extensions and profiles like Composition and Bundle
- Extensive instance creation and validation
- Used Simplifier.net, Forge and the FHIR Java Validator
Martin Zander
Last position:
Consulting, Design and Development at ivv GmbH
- Design, development and maintenance of a web application as a policy management system based on a JEE backend and a Vaadin-based UI
- Design and development of interfaces
- Integration of databases
- Design and development of unit and integration tests
- Conceptual coordination with the client
- Technologies and methods: JEE, Vaadin, EJB, Innovator, Hibernate, REST, JMS, SQL, MQ, Maven, Selenium, Arquillian, Mockito, JUnit, Log4j, OOA, OOD, Scrum, Kanban, JavaScript, HTML, CSS, Jenkins, Jenkins Pipelines, Git, GitLab, Subversion, Jira, Confluence, DB2, WebLogic
Maximilian Mayerhofer
Last position:
Test Data Creation and Management at statutory accident insurance
- Provision of cross-system synthetic test data for test automation for insured persons, companies and external partners in coordination with specialist departments and stakeholders, taking requirements and test cases into account
- Synthesis of test data with regard to data protection and data security
Christian Krah
Last position:
Service Catalog Manager at Deloitte team
- Worked in the IT infrastructure of the Deloitte team.
- Planned assignment as service catalog manager at an insurance company in Hanover.
Janus Thomys
Last position:
Senior Scrum Master, Agile Coach at DMK, Bremen, Germany
- Optimizing agile work using Scrum as the chosen framework
- Coaching teams and individual members to increase collaboration efficiency, improve team effectiveness and performance, and foster a culture of continuous improvement
- Promoting and supporting the use of agile methods with Scrum, including upholding Scrum values and team self-organization
- Preboarding the internal Scrum Master
Jens Kopper
Last position:
Freelancer at IT-P GmbH
- Supported the production rollout of the KVAI-Classic master data system
- Analyzed and fixed errors in PL/SQL-based interfaces on Oracle 19
- Designed fixes and enhancements for the service provider
Yenal Yavuz
Last position:
Shiny R Development at RadixITS Gbr
- Implementation and mapping of regulatory requirements (CSRD, ESRS) in Shiny dashboards and backend functionalities
- Design and development of data-driven modules in Shiny including ESG metrics and reporting templates
- Integration of data sources (SQL, SAP HANA, APIs, CSV/Excel) using DBI, odbc, httr and readr
- Creation of interactive visualizations with plotly, highcharter and DT (DataTables)
Reinhard Meschenmoser
Last position:
Consultant at Infineon
- Preparation of data for the creation of masks for manufacturing semiconductor chips.
Torsten Glunde
Last position:
Datavault with Informatica on Oracle at SEFE
- Datavault modeling and performance improvements in Oracle.
- Requirements process with model-driven Datavault automation.
- Preparation of business requirements for the pricing database in the gas and electricity market.
- Sales performance based on Salesforce CRM.
- Tasks: design and development.
- Tools used: Informatica, Oracle, DBT, Docker, DataOps, Airflow Workflow, Python Ingestion, Gitlab CI.
Discover over 15,000 top freelancers
Statistics of experts using Oracle Database
Aggregated from the professional profiles of matched freelancers.
Experience
27 years (Germany: 24 years)
Position duration
3.1 years
Positions per freelancer
17 (Germany: 15)
Top business areas
Information Technology, Business Intelligence, Product Development
Top industries
Information Technology, Automotive, Banking and Finance
Certification focus areas
Information Technology, Quality Assurance, Business Intelligence
Bachelor's degree or higher
86% (Germany: 87%)
Master's degree or higher
64% (Germany: 54%)
Doctorate
21% (Germany: 8%)
Certifications per freelancer
4 (Germany: 3)
Most common languages
German, English, French
Speak two or more languages
100% (Germany: 97%)
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 Hanover 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 Hanover using Oracle Database
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
Enterprise Data Management with Oracle DB
The Oracle RDBMS is a cornerstone of enterprise-grade data management, powering critical transaction processing and data warehousing. Local enterprises in the Hanover region rely on this relational engine to handle massive data volumes with absolute consistency. Specialists configure its multi-tenant architecture and manage partitioned tables to ensure seamless operations for business-critical applications.
High Availability and Disaster Recovery
To prevent costly downtime, companies require robust clustering and failover strategies. Experienced professionals implement advanced high-availability solutions to keep services running continuously.
- Setting up Real Application Clusters for active-active database clustering.
- Configuring Data Guard for real-time data replication and disaster recovery.
- Managing Recovery Manager backups to guarantee fast data restoration.
- Orchestrating automated failover processes for continuous system access.
Performance Tuning and SQL Optimization
Sluggish databases directly impact business efficiency and user experience. Experts analyze execution plans, rebuild indexes, and optimize complex Oracle SQL queries to eliminate processing bottlenecks. They leverage automatic workload repository reports and active session history data to pinpoint resource-heavy operations, ensuring the engine runs at peak efficiency.
Database Migration and Cloud Integration
Migrating legacy databases requires meticulous planning to avoid data loss. Specialists design safe migration paths from older releases to modern versions like Oracle Database 19c or 23c. They also assist Hanover-based businesses in moving workloads to cloud infrastructures, including Oracle Cloud Infrastructure or hybrid setups, while maintaining strict data integrity.
Database Security and Compliance
Securing sensitive corporate data is a priority under strict European data privacy regulations. Specialists implement advanced security features to safeguard data at rest and in transit.
- Implementing transparent data encryption for sensitive database tables.
- Configuring virtual private databases to enforce row-level security.
- Auditing database access and setting up precise user privileges.
- Applying regular security patches and critical patch updates.
When to Hire an Oracle Freelancer
Companies bring in external specialists for complex upgrades, performance emergencies, or resource shortages during major migrations. In Hanover, local industries utilize freelance experts to bridge skills gaps without the long-term overhead of permanent hiring. These professionals integrate quickly into existing IT structures, delivering immediate technical relief and strategic guidance.
Frequently asked questions
Need clarity? These are the questions we hear most often about Oracle Database.
An Oracle Database specialist designs, implements, and maintains robust database environments to ensure high availability and data integrity. They focus on tasks like performance tuning, setting up backup strategies, and managing security configurations. Many also assist companies in migrating legacy schemas to modern cloud-native architectures.
Look for deep hands-on experience with administrative tools like SQL*Plus and Recovery Manager. A qualified Oracle DB professional should be able to explain how they diagnose performance bottlenecks using system diagnostics. It is also beneficial if they hold official professional certifications, which demonstrate validated technical expertise.
Hiring a local Oracle Database specialist in Hanover allows for easy hybrid or on-site collaboration during critical migration phases. Local professionals understand the technical requirements of businesses in Germany, making it easier to align database setups with strict regional security standards. This proximity also facilitates smoother communication with your internal IT infrastructure teams.
Yes, while it supports the standard ANSI SQL, Oracle SQL includes powerful proprietary extensions and PL/SQL for procedural programming. An expert uses these advanced features, like analytical functions and bulk processing, to write highly efficient database code. This results in faster query execution and lower CPU utilization.
Yes, most administrative and optimization tasks for Oracle Database can be performed entirely via secure remote connections. However, some companies in the Hanover area prefer an initial on-site kickoff or hybrid model for major system upgrades. Clear communication routines and secure VPN access ensure successful remote collaboration.
High-security sectors such as manufacturing, logistics, and public administration in Hanover rely heavily on the Oracle RDBMS for transactional consistency. These industries manage massive ERP systems that require constant uptime and heavy data throughput. Freelance experts help these organizations maintain system stability under heavy workloads.
Upgrading to modern versions of Oracle Database ensures long-term support, critical security patches, and access to advanced features. These versions offer improved automated indexing, enhanced JSON support, and better cloud integration capabilities. A specialist can execute this transition smoothly, minimizing system downtime.
Beside mastering the Oracle RDBMS, a strong professional usually has solid Linux system administration skills, as most enterprise databases run on Unix-like operating systems. Knowledge of scripting languages like Bash or Python helps automate routine database maintenance tasks. Experience with cloud platforms also assists in modern hybrid deployments.
The average hourly rate of freelancers in Hanover, Germany who have used Oracle Database in their recent projects is 94 €, which corresponds to a daily rate of about 749 € based on an 8-hour working day.
Of the freelancers in Hanover, Germany who have used Oracle Database in their recent projects, 86% hold at least a Bachelor's degree, 64% hold at least a Master's degree, and 21% hold a doctorate.
On average, freelancers in Hanover, Germany who have used Oracle Database in their recent projects have 27 years of professional experience, with a single engagement typically lasting around 3.1 years.
The most common languages among freelancers in Hanover, Germany who have used Oracle Database in their recent projects are German (100%), English (100%), and French (24%).
The most common industries among freelancers in Hanover, Germany who have used Oracle Database in their recent projects are Information Technology (100%), Automotive (59%), and Banking and Finance (59%).
The most common business areas among freelancers in Hanover, Germany who have used Oracle Database in their recent projects are Information Technology (100%), Business Intelligence (71%), and Product Development (71%).
Main locations of FRATCH Experts, who have recently used Oracle Database
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 
Nuremberg Request a free demo
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FRATCH CEO
