Oracle SQL Developer Experts in Cologne
matched in minutes from over 15,000 CVs with the power of AI.Hire experts who use Oracle SQL Developer for SQL editing, PL/SQL debugging, schema inspection, query tuning, and database documentation. Get fast, precise matching with vetted, available freelancers.
Meet FRATCH Experts in Cologne, who have recently used Oracle SQL Developer
Stefan M.
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.
Andreas K.
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.
Thomas R.
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 B.
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 T.
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.
Vishali T.
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 M.
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: 90%)
Master's degree or higher
50% (Germany: 53%)
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 19 Sep 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 19 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
Oracle SQL Developer 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 (100%)
- Education (57%)
- Banking and Finance (57%)
- Transportation (57%)
- Manufacturing (57%)
- Professional Services (57%)
- Chemical (43%)
- Government and Administration (43%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Oracle SQL Developer work
Oracle SQL Developer is a tool for working with Oracle databases through a graphical interface. Experts use it to write SQL, run scripts, inspect objects, and review results without switching between many tools. It fits database work that needs speed, clarity, and direct access to Oracle features.
Typical tasks
- Query design and SQL review
- PL/SQL editing and debugging
- Schema browsing and object comparison
- Export, import, and script runs
- Data checks before release
Tooling around it
SQL Developer sits close to the Oracle ecosystem. Strong specialists also work with PL/SQL, Oracle Database, version control, and deployment scripts. They know how to move between ad hoc analysis and repeatable delivery, which matters when teams need reliable database changes.
When to bring help
Companies often bring in freelance expertise when a database grows messy, scripts break, or releases need careful review. SQL Developer is also useful during migrations, test-data preparation, and handover work where clear documentation matters. In Cologne, this often fits teams that need flexible support alongside in-house database work.
What good specialists do
- Keep SQL readable and safe
- Spot slow queries and weak joins
- Understand Oracle object types and grants
- Work cleanly with business and technical teams
- Leave behind scripts others can reuse
Signs you need it
If your team spends too long tracing PL/SQL errors, checking schema changes, or validating data by hand, Oracle SQL Developer expertise can help. The best professionals do more than run queries. They structure the work so others can maintain it later, whether the project is local in Cologne or handled remotely.
Frequently asked questions
What clients ask us most about Oracle SQL Developer — answered in short.
Oracle SQL Developer is used to work with Oracle databases in a visual environment. Experts use it for SQL writing, PL/SQL debugging, schema inspection, and running scripts against development, test, or production systems. It is especially useful when teams need clear access to Oracle objects and results.
Yes, SQL Developer is the common short name people use for Oracle SQL Developer. Searchers may also say Oracle SQL Developer when they want the full product name. In practice, they refer to the same Oracle tool.
Oracle SQL Developer is tailored to Oracle databases, so it usually fits better than generic SQL tools when you need Oracle-specific objects, PL/SQL support, or database browsing. Teams often compare it with DataGrip, TOAD, or other Oracle tools. The right choice depends on how much Oracle depth the work needs.
A strong Oracle SQL Developer specialist usually also knows Oracle Database, PL/SQL, SQL tuning, indexing, grants, and basic data modeling. Version control and deployment scripts are helpful too. These skills matter because the tool is only part of the work.
A small reporting fix or query review may only need focused Oracle SQL Developer support. A migration, release cleanup, or performance issue usually needs deeper Oracle knowledge and careful validation. What matters most is the complexity of the database, not just the length of the project.
Yes, most Oracle SQL Developer work can be done remotely because the main tasks are SQL review, PL/SQL work, and schema analysis. On-site work can still help when access rules are strict or when teams want close workshop-style collaboration. In Cologne, many companies mix both ways of working.
Look for clean SQL, correct Oracle syntax, and a clear explanation of choices in the Oracle SQL Developer work. Good specialists leave scripts that are easy to rerun, document assumptions, and check results carefully. Quality also shows in how well they handle privileges, dependencies, and rollback needs.
Teams usually ask for SQL Developer help when queries are slow, PL/SQL blocks are hard to debug, or schema changes need careful checking. It also comes up during migrations, data fixes, and handover work. These are the moments when an external specialist can add speed without losing control.
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.
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Hamburg 
Munich 
Frankfurt Request a free demo
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FRATCH CEO
