Oracle Database Experts in Essen
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Meet FRATCH Experts in Essen, who have recently used Oracle Database
Alwin G.
Last position:
IT Interim Manager & AI Strategist
- Founder of CheironX: AI-supported GRC management (ISO 27001, BSI IT-Grundschutz, TISAX, DORA)
- Strategic focus on Agentic AI and GenAI for modern IT Governance, Risk & Compliance Management
- IT interim management and strategic consulting
Humayun S.
Last position:
Senior Test Manager - Lead at Star Finanz GmbH
- QA Lead for end-to-end quality assurance of the Sparkasse & Sparkasse Business banking apps (iOS/Android); design and implementation of the Test Strategy including functional testing, regression testing, and UAT for eID, Push Notifications, and white-label components
- Creation and maintenance of test concepts and test plans in TestRail; structured Defect Management and error analysis; stakeholder management and risk management for the early identification of critical quality risks
- Accessibility Testing according to WCAG 2.1 (iOS/Android); coordination of AI-supported test automation and optimization of test processes to shorten release cycles
- Release Management: planning, management, and coordination of all test activities; status reporting to management and stakeholders; quality assessment of releases and release recommendations in an Agile/Scrum environment
- Challenge: Highly complex build and release process across several Sparkasse institutions; close coordination with the DevOps team to stabilize the CI/CD pipeline and ensure reproducible test builds before every release.
Tools: Jira, Confluence, TestRail, Android Studio, Xcode, Firebase, Jenkins, GA4
- Success: Successful launch of the eID authentication process - quality assurance ensured for 50+ Sparkasse institutions
Asım Y.
Last position:
Freelance BI/DWH/ETL Specialist at Akbank
- Setting architectural standards for Informatica Power Center development teams
- Maintenance-performance-health for DWH (Exadata) environments
- Qlik Sense / BO reports architectural standards
- Implementing best practices in ETL tasks
- Documentation ETL standards on Confluence
- Dynamic Data Masking rules for GDPR/KVKK regulations by using Informatica DDM tool
- DWH Data model Power Designer
- Upgrade Qlik Sense versions
- Merge all Informatica server's repository databases on one Oracle DB
Boris S.
Last position:
Generalist expert for software development at Mercor
- Training AI models, evaluating images and text UI/UX, turning the provided data into insights through OpenAI Feather as part of the machine learning workflow
Technologies: OpenAI Feather
Michael L.
Last position:
Head of IT at Ruthmann Holdings GmbH
- Management of IT with 10 employees, including budget and personnel responsibility.
- Harmonization of the Navision systems in Germany, Switzerland and Austria.
- Connection of the ERP systems in Switzerland, Austria and Italy to the central Microsoft Power BI systems in Germany.
- Rollout of a new firewall at 10 locations in D, CH and A.
- Evaluation of a new DMS.
- Migration to Windows 10 / 11.
- Transformation of 9 countries into ONE Europe.
- Start of NIS2 implementation in 5 European countries.
Anupriya P.
Last position:
Senior Software Engineer at Telefonica Germany
(Maternity/Parental Leave: July 2023 – Aug 2024)
- Domain: Payment Domain | Client: Telefonica Germany
- Project: General Payment Service
The General Payment Service is responsible for processing of online payments via external payment service provider like Safer pay and PayPal
- Developed Design of Use (DOU) and interface contract documentation, ensuring clarity and compliance across system integrations
- Designed and delivered REST/SOAP web services with Spring Boot and Spring Data JPA, publishing Swagger contracts through WSO2 API Gateway to improve accessibility and governance.
- Spearheaded the on-premises to AWS Cloud migration, re-platforming from Oracle to PostgreSQL on AWS RDS and deploying services on EC2, improving scalability and cost efficiency.
- Containerized microservices using Docker and orchestrated deployments with Kubernetes, streamlining deployment pipelines and improving system reliability.
- Implemented proactive monitoring and logging via AWS CloudWatch and Kibana, ensuring stability and performance during cutover.
- Enhanced collaboration through code reviews and peer reviews, promoting maintainability and clean coding standards.
- Strengthened quality by writing comprehensive JUnit tests and preparing detailed test cases enabling early defect detection
- Delivered automated API testing with Ready API, Postman, and SOAPUI, and conducted performance testing with JMeter, ensuring reliability in high-transaction environments.
Sileem H.
Last position:
Senior Consultant, Lead-Developer, Architect at Bundesamt für Informatik und Telekommunikation
- Company FROX (Schweiz), end customer: Bundesamt für Informatik und Telekommunikation.
- Consulting and development. ITSM Suite, development of a semi-generic REST API interface solution. Performance tuning.
Adem S.
Last position:
IT Consultant (Test Manager) & CEO at Trikolon Consulting GmbH
- Development and implementation of test concepts for complex, multi-layered systems
- Creation of regular management reports and presentations for stakeholders and clients
- Technical and disciplinary leadership of international test teams (coordination, coaching, resource planning)
- Responsibility for quality assurance across multiple test levels (unit, integration, system, and acceptance tests)
- Design of test cases and test plans in Azure DevOps; ensuring traceability and coverage
- Use of BDD approaches (Gherkin/Cucumber) to prepare test automation
- Building a test automation architecture with Playwright and integrating new tests into CI/CD pipelines
- Performing API tests (REST) and tests for mobile/PWA applications
- Setup and maintenance of test environments across multiple stages (integration, QA, UAT, pre-production)
- Test data management (synthetic and production-like data), ensuring consistency and reproducibility
- Collaboration with DevOps teams for containerization (Docker/OpenShift) and CI/CD integration
- Working under SAFe & Scrum, closely coordinating with product owners and DevOps teams
- Active participation in PI plannings, sprint reviews, and retrospectives
- Promoting an agile QA culture through coaching and knowledge sharing
- Introducing scalable test automation with Playwright → significant reduction of manual testing efforts
- Increasing test transparency through clean defect and reporting management in Azure DevOps
- Improved release quality through an end-to-end QA strategy and automated regression tests
- Strategic leadership of Trikolon Consulting GmbH and responsibility for finance, personnel, and business development
Benjamin W.
Last position:
SAP Basis at IT Baden-Württemberg (BITBW)
- SAP Basis operations for complex SAP system landscapes (ABAP and Java stacks)
- Administration, monitoring, and optimization of SAP systems with regard to availability, performance, and stability
- Planning and execution of data center moves as well as migrations of SAP systems and databases
- Handling of incidents, changes, and problems according to ITIL processes, including root cause analyses
- Creation of technical concepts, operations documentation, and implementation plans
Technologies: SAP NetWeaver, ITIL processes, technical migrations
Jens S.
Last position:
Network Technology at ISP, Internet Service Provider, BGP Peering
- Optimization of the transmission media of the data links in the Ruhr area
- Configuration/expansion of switches and routers for an autonomous system AS
- Improve the network protocols used Layer 2/3 (OSI model), RSTP, broadcast, etc.
- Laying cables, crimping, antennas, routers, switches
- Maintenance, expansion, selection and prioritization of troubleshooting measures for network monitoring (PRTG, The Dude)
- Organization and new connection of another BGP peering, data center, NGN fiber optic
- VPN IPSec site connections for 6 sites with PFSense, Fritzbox
- Configuration of WLAN devices (Mikrotik, UBNT
Label: TCP/IP, VLAN, BGP, OSPF, MPLS, VPLS, routing protocols, WLAN, EoIP, PPPoE, routing, SNMP, DHCP, DNS, NAT, native IP, VLAN, Ethernet, VoIP., switches and routers from: Nortel, Cisco, MikroTik, UBNT., network management systems: The Dude, PRTG, UISP
Gernot L.
Last position:
Founder and Managing Director at Softwerk/Ruhr GmbH
- Architecting and developing SaaS platform for graphical definition and execution of pandas data processing pipelines
- Developed POlyglott, an open-source Python CLI tool for translation workflow management featuring PO file parsing, quality linting with glossary enforcement, and DeepL API integration for machine translation
- Developed web application for material compliance management (EU REACH) using Django and modern web technologies
- Built automated infrastructure platform using Proxmox, Terraform, and Ansible — VM provisioning, configuration management, internal DNS, and fleet-wide security hardening across multiple subnets
Andreas A.
Last position:
IT-Application Manager at IHK-GfI
- Gathering, analyzing, specifying, and prioritizing requirements for the 'Archive and Delete' module of the Chambers of Industry and Commerce in a Scrum team
- Capturing and specifying screen/form designs, functionality, and data types in Confluence, as well as creating user stories in Jira
- Preparing PowerPoint presentations for the 'Archive and Delete' module
- Coordinating and supporting the Chambers of Industry and Commerce in the implementation of the module
- Writing SQL scripts for an Oracle database
- Technologies used: Scrum, Confluence, Jira, MS Office, Postman, JavaScript, REST API, JSON, DBVisualizer, SQL
Dmitrii S.
Last position:
Senior Developer/Team Lead at Devexperts
Project Livebash (2021-12-01–2023-12-31)
Development and design of the core system
Code reviews
Developer management
CI/CD
Client communication
Leading epics
Speaking at conferences
Managing the production system
Interviewing project developers
Outcome: production system
Technologies and tools: Java 11, Java 17, Kotlin, Spring Boot, TeamCity, Gradle, AWS DynamoDB, JUnit, Mockito, Docker, Docker Compose, AWS SQS, AWS EC2, AWS S3, AWS MediaLive, Ethereum, Postman
Project Robinhood (2024-01-01–2024-05-31)
Customization and development of product features for specific clients
Interviews with project developers
Technologies and tools: Java 17, Java RX, Kotlin, Spring Boot, TeamCity, Gradle, JUnit, Mockito, Docker, Docker Compose, PostgreSQL
Projects Sway, Tickmill, Pepperstone, UCapital (2024-06-01–present)
Customization and development of product features for specific clients
Bug fixes
Porting tickets from the product
Feature development
Technologies and tools: Java 17, Java RX, Kotlin, Spring Boot, TeamCity, Gradle, JUnit, Mockito, Docker, Docker Compose, PostgreSQL
Kamal T.
Last position:
Design and development of a requirements verification tool based on the INVEST principle at Ranasoft Internet Technologies
- Design of requirement verification based on the INVEST principle
- Implementation of the prediction model with scikit-learn and BERT
- Implementation of the web client with ReactJS and FastAPI
- Adaptation of the T5 model to improve user story generation according to the INVEST framework
- Certification of NLP and scikit-learn
- Technologies: Python, NLP, Scikit-Learn, BERT, T5, ReactJS, FastAPI, Cursor Visual Paradigm, Visual Studio, Draw.io, NSIS, vite, Electron
Marcel D.
Last position:
Software Developer / IT Tester at Continentale Krankenversicherung a.G.
Analysis, online COBOL software development and testing of dialog and batch programs in the Kranken Leistung (KL) project
Error analysis, bug fixing and ticket resolution (change requests and defects)
Documentation in collaboration with the contact office and the mathematics department
IT skills: Siemens Fujitsu BS2000, CCOM Emulation, Micro Focus Visual COBOL I and II, Eclipse IDE, UDS database system, Atlassian Confluence and Jira, ZULIP, UNIFY
Discover over 15,000 top freelancers
Statistics of experts using Oracle Database
Aggregated from the professional profiles of matched freelancers.
Experience
25 years (Germany: 23 years)
Position duration
2 years (Germany: 3.1 years)
Positions per freelancer
18 (Germany: 15)
Top business areas
Information Technology, Product Development, Project Management
Top industries
Information Technology, Banking and Finance, Automotive
Certification focus areas
Project Management, Information Technology, Quality Assurance
Bachelor's degree or higher
86% (Germany: 88%)
Master's degree or higher
57% (Germany: 54%)
Certifications per freelancer
3
Most common languages
German, English, French
Speak two or more languages
100% (Germany: 97%)
Based on our profile pool as of 29 Oct 2026.
Daily rate distribution
The chart shows how the daily rates of experts in this technology in Essen are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows the share of experts charging within that range.
Discover detailed Oracle Database rate benchmarks:
Explore rate insightsAverage rates of experts in Essen 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 29 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
Oracle Database experts industry focus
See which industries our matched freelancers work in most often — every figure is calculated live from the freelancers on FRATCH.
- Information Technology (95%)
- Banking and Finance (68%)
- Automotive (59%)
- Healthcare (55%)
- Manufacturing (55%)
- Government and Administration (45%)
- Retail (41%)
- Telecommunication (41%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Core purpose
Oracle Database is a relational database management system for storing, querying and protecting business data. Companies use it for transaction-heavy applications, financial records, supply chains, customer systems and reporting. Its mature security, recovery and performance features suit environments where data consistency matters.
Enterprise workloads
Oracle Database supports high-volume OLTP, data warehousing and mixed workloads in the same enterprise landscape. It appears behind ERP, CRM, billing, logistics and public-sector applications, often alongside Java, .NET or packaged Oracle software. In Essen, specialists may support industrial, retail, logistics and service organisations with complex operational data.
Ecosystem and tooling
Professionals work across the database engine, SQL, PL/SQL and Oracle Enterprise Manager. Related tools and services include Oracle RAC, Data Guard, GoldenGate, RMAN, Exadata and Oracle Cloud Infrastructure. Strong expertise may also cover:
- Schema design, indexing and SQL execution plans
- Backup, recovery, replication and high availability
- Data migration and integration with enterprise applications
- Monitoring, patching and capacity planning
When to bring in specialists
Companies often engage freelance specialists during migrations, upgrades, performance incidents or major application rollouts. They can assess an existing estate, define a migration path, fix slow queries and document operational procedures. Short-term support is also useful when internal teams need deep Oracle knowledge without adding a permanent role.
Delivery and collaboration
Oracle work spans architecture, administration, development and production operations, so project scope should be clear from the start. Remote collaboration works well for analysis, SQL tuning, documentation and planned changes when secure access and change controls are in place. Essen-based teams may prefer on-site workshops for legacy discovery, stakeholder sessions or sensitive cutovers.
What strong experts show
A capable professional explains trade-offs in business terms and validates changes with evidence. Look for experience with execution plans, wait events, locking, backup tests and recovery objectives rather than tool familiarity alone. Useful specialists also understand application behaviour, Linux, networking, automation and the compliance needs around critical data.
Frequently asked questions
What clients ask us most about Oracle Database — answered in short.
Oracle Database is used to run systems that need reliable transactions, controlled access and consistent data. Common examples include ERP, finance, supply chain, billing, customer records, analytics and applications with demanding availability requirements.
Oracle Database offers a broad enterprise feature set around high availability, security, recovery and large-scale operations. PostgreSQL and Microsoft SQL Server may be a better fit for different budgets, cloud choices or team skills, so the decision should reflect workload, licensing, existing applications and operating requirements.
A strong Oracle Database specialist often brings SQL, PL/SQL, Linux, networking and scripting skills. Depending on the assignment, knowledge of Oracle Cloud Infrastructure, Java, ERP systems, data integration, monitoring and security is also valuable.
The right level for Oracle Database depends on risk and scope, not a fixed number of years. A schema change or query review may need focused specialist input, while a migration, RAC design or recovery programme calls for proven ownership of comparable production environments.
Oracle Database projects can often be delivered remotely from Essen when access, documentation and approval processes are ready. On-site work can still help with legacy discovery, workshops, hardware dependencies or a sensitive production cutover, particularly when several local teams must coordinate.
Companies bring in an Oracle Database specialist for migrations, upgrades, performance problems, recovery planning and complex integrations. Freelancers are also useful when an internal team needs an independent review or temporary capacity for a critical delivery.
Ask an Oracle Database professional to explain how they diagnose slow SQL, blocking, failed backups and recovery risks. Good answers connect measurements to business impact, include rollback plans and show how changes are tested, documented and monitored after release.
Before an Oracle Database assignment, clarify the edition, deployment model, workload, service levels, access rules and change process. The specialist should also understand the application dependencies, backup and recovery expectations, monitoring setup and the people responsible for approvals.
The average hourly rate of freelancers in Essen, Germany who have used Oracle Database in their recent projects is 91 €, which corresponds to a daily rate of about 728 € based on an 8-hour working day.
Of the freelancers in Essen, Germany who have used Oracle Database in their recent projects, 86% hold at least a Bachelor's degree and 57% hold at least a Master's degree.
On average, freelancers in Essen, Germany who have used Oracle Database in their recent projects have 25 years of professional experience, with a single engagement typically lasting around 2 years.
The most common languages among freelancers in Essen, Germany who have used Oracle Database in their recent projects are German (100%), English (100%), and French (32%).
The most common industries among freelancers in Essen, Germany who have used Oracle Database in their recent projects are Information Technology (95%), Banking and Finance (68%), and Automotive (59%).
The most common business areas among freelancers in Essen, Germany who have used Oracle Database in their recent projects are Information Technology (91%), Product Development (86%), and Project Management (86%).
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.
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Dortmund 
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Dresden 
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Nuremberg Request a free demo
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