Oracle SQL Developer Experts in Cologne
matched in minutes from vetted and available specialistsHire experts who work with Oracle SQL Developer for query tuning, schema browsing, PL/SQL checks, data export, and Oracle Database troubleshooting, with fast, precise matching to vetted, available freelancers.
Meet FRATCH Experts in Cologne, who have recently used Oracle SQL Developer
Stefan Marx
Last position:
Bundesrechtsanwaltskammer
- Design, planning and execution of complex acceptance tests for a document exchange platform for the German justice authorities.
- Validation of decrypted and certificate-based message exchange via web platform, mobile app, and Java API.
- Documentation of test cases, execution steps, and test results.
- Technologies: Windows 11/10, Ubuntu, iOS, Android, Bash for Windows, Java 17, IntelliJ, Git, Jira, Confluence, Citrix Server, xJustiz standard implementation, specific justice software.
Thomas Reick
Last position:
BI Consultant and Power BI Developer at Plusnet GmbH
- In-depth forensics of old and new data sources
- Enhancing existing reports and creating new data analyses
- Data preparation from source systems and semantic models
- Azure DevOps integration
- Tools/Skills: MS-PowerBI, DAX, MS-Office 365, PowerQuery, M, PowerAutomate, Redmine, SharePoint, SQL (T-SQL, Oracle), MS Fabric
Peter Brungs
Last position:
Data Warehouse Consultant (Development and Analysis) at Atruvia AG
- Developed and enhanced ETL loading jobs with IBM DataStage and optimized SQL in an IBM DB2 environment as part of the Agree21 data migration
- Analyzed data quality and developed test procedures
- Created PowerShell scripts and documented GIT deployment processes
- Technologies: RedHat Linux, IBM DB2 with DBVisualizer, IBM InfoSphere DataStage 11.7, JIRA, TortoiseGIT, TortoiseSVN, PowerShell scripts
Filipp Trigub
Last position:
Multi-chain LLM copilot for academic teaching and studying at Infolab.ai
- Build a sophisticated AI copilot to augment the students’ learning experience and provide AI-derived insights to professors.
- Build a multi-chain LLM system adapting to user needs at its own accord with a Weaviate vector DB based RAG system and evaluated it with Ragas.
- Build responsive react frontend, and backend systems handling auth, data management and auxiliary services as a RESTful API.
- Deployed and managed the app to the cloud in a production environment including the CICD via multi-stage deployment.
Andreas Kosubek
Last position:
Backend Developer at Univention GmbH
- Developed a SCIM-compliant Python interface to connect external systems
- Expanded and enhanced UCS modules in Python
- Extended and newly developed Helm charts for container orchestration in Kubernetes
- Maintained and further developed CI/CD pipelines in GitLab
- Implemented automated tests with Pytest and Playwright
'Nubus' is based on a microservice architecture, relies on open source technologies, and runs in Docker containers.
UCS is an IAM complete solution based on Debian, used as an alternative to Microsoft's Active Directory. The work was characterized by the close integration of infrastructure and application logic.
Vishali Thangalapally
Last position:
Senior Analyst at Accenture
- Facilitated data retrieval for first-assist applications through an interface that fetches content based on client input criteria and loads it into the database via batch processing.
Robert Meixner
Last position:
Air traffic tax German Customs Administration SOAP Webservices Client Requests at Team GmbH
In the citizens' and business customer portal of the Customs Administration, airlines submit applications for departures and landings every month
These applications are forwarded to the caseworkers via SOAP web service and, after review and processing, any queries or notifications are returned via SOAP web service
PL/SQL programming of SOAP webservices client requests for HTTP/XML message exchange between the BuG portal and the caseworkers
New creation and change requests for Forms and Reports 12 modules
Forms applications start and read SOAP webservice requests via PL/SQL packages, process them and send Reports 12 documents to the airlines
Discover over 15,000 top freelancers
Statistics of experts using Oracle SQL Developer
Aggregated from the professional profiles of matched freelancers.
Experience
18 years (Germany: 22 years)
Position duration
1.6 years (Germany: 2.1 years)
Positions per freelancer
19 (Germany: 17)
Top business areas
Information Technology, Business Intelligence, Product Development
Top industries
Information Technology, Education, Banking and Finance
Bachelor's degree or higher
67% (Germany: 91%)
Master's degree or higher
50% (Germany: 54%)
Certifications per freelancer
1 (Germany: 3)
Most common languages
German, English, French
Speak two or more languages
86% (Germany: 95%)
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 Cologne 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 Cologne using Oracle SQL Developer
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
Oracle SQL Developer work
Oracle SQL Developer is a desktop tool for working with Oracle Database. Teams use it to inspect schemas, write and test SQL, run PL/SQL, compare objects, and move data between environments. It is a practical choice for day-to-day database work, from quick checks to release support.
Typical tasks
- Write and review SQL queries
- Edit and test PL/SQL blocks, packages, and procedures
- Browse tables, views, indexes, and constraints
- Export data and generate scripts for handover
- Compare database objects across environments
Ecosystem fit
Oracle SQL Developer sits in the Oracle stack and connects closely with Oracle Database features. Strong specialists know how to use it with PL/SQL, data model views, import and export tools, and the worksheet for ad hoc work. They also understand where the tool helps and where direct SQL or other Oracle utilities are better.
When companies bring in experts
Companies usually look for freelance support when a release is blocked, database changes need review, or a team needs clean SQL fast. In Cologne, this often fits teams that run Oracle-based finance, logistics, insurance, or enterprise systems and need on-site or remote support without long onboarding.
What strong specialists do
A good specialist does more than click through the UI. They read execution plans, spot risky queries, verify object changes, and keep scripts clear for others to reuse. They also work carefully with permissions, naming, and environment differences so the database stays stable.
How to judge fit
Look for hands-on Oracle Database experience, not only tool familiarity. The right expert can explain why a query is slow, how a schema change affects dependent objects, and how to validate results in SQL Developer before deployment. Clear notes, tidy scripts, and calm communication matter just as much as speed.
Frequently asked questions
What clients ask us most about Oracle SQL Developer — answered in short.
Oracle SQL Developer is used to write SQL, work with PL/SQL, inspect Oracle Database objects, and move or compare data during development and support. Companies bring it in for schema checks, script review, query testing, and release preparation. It is most useful when teams need accurate work on Oracle data structures, not just a text editor for SQL.
Oracle SQL Developer is the full product name, and many people shorten it to SQL Developer. In search and project briefs, both names usually point to the same Oracle tool for database work. If a freelancer knows the product well, they should be comfortable with the naming variations and the surrounding Oracle ecosystem.
Oracle SQL Developer is strongest for Oracle-specific work such as PL/SQL, schema browsing, and object management. Generic SQL clients can be fine for simple queries, but they often lack Oracle-focused features that matter in real delivery. If your project centers on Oracle Database, the native tool usually gives a better workflow.
A strong Oracle SQL Developer specialist usually knows Oracle SQL, PL/SQL, execution plans, data modeling basics, and common Oracle object types. They should also handle import and export tasks, script versioning, and validation across environments. Good communication helps when database changes need to be reviewed with the wider team.
Oracle SQL Developer projects can be small or complex, so the needed depth depends on the task. Simple query review or data export may need only focused support, while schema refactoring, performance analysis, or PL/SQL troubleshooting needs deeper Oracle experience. The safest choice is an expert who has worked on similar database tasks before.
Oracle SQL Developer work can often be done remotely because the main tasks are SQL review, schema inspection, and script validation. On-site time can help when a team wants close collaboration during release windows or when access rules are strict. In Cologne, many companies use a mix of remote work and short on-site sessions.
Ask for examples of Oracle work that show clear reasoning, not only tool usage. A good Oracle SQL Developer freelancer explains query choices, checks object dependencies, and documents what changed and why. Clean scripts, careful testing, and a solid understanding of Oracle Database are stronger signs than a polished profile alone.
Oracle SQL Developer specialists commonly deliver SQL scripts, PL/SQL fixes, object comparison notes, export files, and review comments for database changes. They may also prepare troubleshooting steps for slow queries or write repeatable scripts for deployment support. The best deliverables are easy for the next person to read and run.
The average hourly rate of freelancers in Cologne, Germany who have used Oracle SQL Developer in their recent projects is 88 €, which corresponds to a daily rate of about 704 € based on an 8-hour working day.
Of the freelancers in Cologne, Germany who have used Oracle SQL Developer in their recent projects, 67% hold at least a Bachelor's degree and 50% hold at least a Master's degree.
On average, freelancers in Cologne, Germany who have used Oracle SQL Developer in their recent projects have 18 years of professional experience, with a single engagement typically lasting around 1.6 years.
The most common languages among freelancers in Cologne, Germany who have used Oracle SQL Developer in their recent projects are German (100%), English (86%), and French (29%).
The most common industries among freelancers in Cologne, Germany who have used Oracle SQL Developer in their recent projects are Information Technology (100%), Education (57%), and Banking and Finance (57%).
The most common business areas among freelancers in Cologne, Germany who have used Oracle SQL Developer in their recent projects are Information Technology (100%), Business Intelligence (86%), and Product Development (71%).
Main locations of FRATCH Experts, who have recently used Oracle SQL Developer
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 
Frankfurt Request a free demo
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FRATCH CEO
