Oracle Database Experts in Essen
for secure data systems, matched in minutes with vetted available freelancersHire experts who design relational data models, tune SQL and PL/SQL, manage high-availability environments and support Oracle Cloud projects. FRATCH connects you with precisely matched, vetted and available freelancers quickly.
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
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
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.
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
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
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
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
Aida K.
Last position:
Sales Assistant at Bakery Schollin
- Customer service and point-of-sale (cash register) operations
- Inventory management and stock organization
- Strengthened German language skills through daily customer interaction
- Worked collaboratively in a fast-paced, team-oriented environment
Michael L.
Last position:
Project Manager (Interim) at medi GmbH
- Contract negotiations with Infor
- Implementation of Infor LN Cloud "Finance" in 10 countries in Europe within 6 months
- Implementation (ongoing) of materials management, purchasing and sales in 16 countries worldwide
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
Discover over 15,000 top freelancers
Statistics of experts using Oracle Database
Aggregated from the professional profiles of matched freelancers.
Experience
24 years (Germany: 23 years)
Position duration
1.8 years (Germany: 3.1 years)
Positions per freelancer
18 (Germany: 15)
Top business areas
Information Technology, Project Management, Product Development
Top industries
Information Technology, Banking and Finance, Automotive
Certification focus areas
Project Management, Information Technology, Quality Assurance
Bachelor's degree or higher
89% (Germany: 88%)
Master's degree or higher
58% (Germany: 53%)
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 19 Sep 2026.
Daily rate distribution
The chart shows how the daily rates of freelancers in this technology in Essen 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.
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 19 Sep 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 (71%)
- Automotive (57%)
- Healthcare (57%)
- Manufacturing (57%)
- Government and Administration (43%)
- Retail (43%)
- Energy (38%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Core capabilities
Oracle Database is a relational database management system for storing, processing and protecting business-critical data. Companies use it for transaction-heavy applications, financial systems, enterprise resource planning, reporting platforms and data integration. Its SQL engine, PL/SQL language, security model and workload management support demanding operational environments.
Enterprise workloads
Oracle Database often runs behind systems where consistency, auditability and controlled access matter. Typical assignments include:
- Designing schemas, tables, indexes and partitioning strategies
- Building PL/SQL packages, procedures, triggers and jobs
- Migrating legacy databases or consolidating estates
- Connecting applications, warehouses and reporting tools
Ecosystem and tooling
Strong specialists work across Oracle Database editions and related products such as Oracle RAC, Data Guard, GoldenGate and Oracle Exadata. They use SQL Developer, Enterprise Manager, RMAN and Oracle Cloud Infrastructure where appropriate. Adjacent knowledge may include Linux, virtualization, Java, ETL pipelines and observability tools.
When companies hire specialists
Freelance expertise helps when an internal team faces a migration, performance problem, upgrade, recovery exercise or security review. In Essen and across Germany, specialists may collaborate remotely with distributed teams or join an on-site phase for workshops, cutovers and production support. Clear documentation and reliable communication are essential in both settings.
What quality looks like
A capable Oracle Database professional starts with workload patterns, data sensitivity and recovery objectives rather than applying generic tuning advice. They can read execution plans, investigate locks and wait events, review SQL and explain trade-offs clearly. Look for evidence of tested backups, controlled releases, rollback plans and measurable improvements tied to the business need.
Project deliverables
Engagements may produce a target architecture, migration runbook, optimized queries, data models, monitoring rules or disaster-recovery procedures. The right specialist also maps dependencies, validates changes in a safe environment and transfers operational knowledge to the internal team. Experience with Oracle Database should match the scale, version mix and compliance demands of the specific system.
Frequently asked questions
What clients ask us most about Oracle Database — answered in short.
Oracle Database stores and manages structured business data for applications such as finance, logistics, enterprise resource planning, customer operations and reporting. Companies choose it when transaction integrity, security, availability and controlled administration are central requirements.
Oracle Database is often weighed against PostgreSQL and Microsoft SQL Server for enterprise workloads. The decision depends on existing applications, licensing, cloud strategy, operational skills, compatibility needs, performance requirements and the organization’s tolerance for migration effort.
A strong Oracle Database specialist may also work with SQL, PL/SQL, Linux, shell scripting, backup and recovery, monitoring, data integration and cloud infrastructure. Knowledge of application runtimes, networking and security is valuable when database issues cross system boundaries.
The right level depends on the assignment, not a fixed tenure. A focused SQL or schema task may need a specialist with a narrow scope, while a migration, RAC design, Data Guard setup or production recovery requires experience with comparable risk and operating conditions.
Yes, many Oracle Database tasks can be completed remotely through controlled access, documentation and scheduled maintenance windows. On-site work can still help with workshops, hardware-linked environments, cutovers or teams that prefer direct collaboration in Essen.
Ask how the specialist investigates execution plans, locking, storage growth, backup integrity and recovery objectives. A quality Oracle Database professional explains findings clearly, tests changes safely and provides repeatable documentation instead of relying on unexplained tuning claims.
An Oracle Database freelancer may deliver a schema design, migration plan, optimized SQL, PL/SQL components, backup procedures, monitoring configuration, recovery documentation or a performance review. Agree on acceptance criteria, test evidence and handover materials before work begins.
Oracle Database knowledge is highly relevant to Oracle Cloud Infrastructure projects involving managed databases, migrations, networking, identity controls and recovery design. The specialist should understand which responsibilities remain with the cloud service and which still require database-level configuration and oversight.
The average hourly rate of freelancers in Essen, Germany who have used Oracle Database in their recent projects is 90 €, which corresponds to a daily rate of about 716 € based on an 8-hour working day.
Of the freelancers in Essen, Germany who have used Oracle Database in their recent projects, 89% hold at least a Bachelor's degree and 58% hold at least a Master's degree.
On average, freelancers in Essen, Germany who have used Oracle Database in their recent projects have 24 years of professional experience, with a single engagement typically lasting around 1.8 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 (29%).
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 (71%), and Automotive (57%).
The most common business areas among freelancers in Essen, Germany who have used Oracle Database in their recent projects are Information Technology (90%), Project Management (86%), and Product Development (81%).
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 
Bremen 
Dresden 
Hanover 
Nuremberg Request a free demo
Get in touch with the FRATCH team and we will get back to you within 4 hours.
Would you rather directly get in touch?
We always have the time for a call or email!
Philipp Thomaschewski
FRATCH CEO
