PL/SQL Expert in Dusseldorf
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Meet FRATCH Experts in Dusseldorf, who have recently used PL/SQL
Adnan Karabegovic
Last position:
Chief Information Officer at ARLANXEO Deutschland GmbH
- Executed post-carve-out stabilization, system consolidation and cybersecurity uplift. Re-assessed system landscape and assets and designed new IT strategy for future. Implemented new IT operating model focusing on product-centric organization and re-internalization of critical resources.
- Successfully designed new IT operating model of the company, based on massive reduction of external dependencies, insourcing of key positions and upskilling of employees.
- Massive reduction of IT cost in the first three years (-40m$), bringing IT spend level below Gartner industry benchmark (1.27%).
- Introduced new product-centric organization based on fusion teams between business and IT across the company.
- Administered implementation of corporate-wide IT/OT cybersecurity program with more than 60 projects.
- Continuous improvement of enterprise IT/OT cybersecurity maturity level with significant increase in the first two years (CMMI >3.5, C2M2 >2.5).
- Governed successful implementation of the business transformation program within IT area by overachieving the savings target by $8m.
- Initiated and created new cloud-based data management platform based on best-in-class technology.
- Implemented first company-wide Microsoft Copilot AI program based on various business cases, leveraging GenAI and AgenticAI.
Jürgen Schoemaker
Last position:
IT Consultant / Analyst / Developer / Tester / Support at Automotive Manufacturer
- Analysis, software development/customization, and testing of various transaction and batch objects
- Conducting functional integration and regression tests on TEST and QA platforms under z/OS for later production implementation
- Hardware / Software / Tools: IBM MVS, z/OS, JES2/3, TSO-ISPF, JCL, DB2, SQL, SQL/PL, QMF, QMF for Workstations, SPUFI, FileAid, IMS-DB/DC, MFS, XPEDITER, COBOL, REXX, Windows 10, MS Office 365, MS Teams, batch job management via OPC, BETA92, RVS, BVB, ABL, DIALOGplus, PROBA, PRODPR (VW internal systems), JIRA, CONFLUENCE
Sebastian Chece
Last position:
Public institution responsible for educational institutions in NRW
- Consulting on processes and execution of load tests, performance tests and technical tests of various applications: web portal, file cloud, email, video conferencing, learning/course platform
- Creating the load test framework
- Programming test scripts (JMeter, Selenium)
- Developing batches to support the evaluation
- Executing load tests and evaluating results, including clear reporting, recommendations for action, and bottleneck analysis
- Managing tasks and collaboration to achieve meaningful load test results
Younes Hadrous
Last position:
Senior Backend Developer at PTA
- Development and maintenance of database-driven applications for managing supplier and food contracts, using Oracle PL/SQL extensively for complex business logic and data processing
- Optimization of PL/SQL procedures, functions, and triggers to ensure the performance and scalability of Oracle database solutions
- Ensuring adherence to best practices in PL/SQL development and implementing standards for code quality and data integrity
- Close collaboration with backend and frontend teams to ensure seamless integration between the Oracle database, C#-based APIs, and Azure cloud services
Dalia Cananau
Last position:
Oracle Developer at Freelance
- Design and implementation of an OCI-based data warehouse and ETL system to replace legacy mainframe applications
- Developed a database optimization strategy and planned the rapid conversion of JCL and COBOL routines to PL/SQL using AI
- Developed an Oracle Apex-based app for internal administrative processes in the public sector (office equipment, staff training)
- Implemented PL/SQL workflows for approval processes and created a responsive mobile version with JavaScript and CSS
- Used Azure DevOps for backlog management and documentation, and Git for version control
- Developed REST interfaces to CRM systems
- Replaced and reprogrammed Oracle Forms screens with Oracle Apex and updated to the latest Apex versions
- Designed a Git branching strategy and conducted code reviews
- Maintained and further developed an EDI-based data exchange system based on Oracle Advanced Queuing for the public sector in Austria
- Performed data analysis and created charts in the Oracle Apex frontend; installed standalone ORDS and Apex 23.1
- Worked agile using the Spotify model; developed complex Apex pages with support from Oracle JET
- Rebuilt and customized existing PL/SQL packages, created workarounds for database version differences, and optimized queries
- Developed Apex applications for broker pools to manage and optimize Oracle databases in the banking environment, including SSO-based authorization systems with OAuth2 and Keycloak
- Built extensive Oracle Apex applications for BI and data mining modernization projects and developed manual and automated projection methods in the frontend
- Carried out data warehousing projects in the banking sector and used Scrum and Kanban in team projects
Ulaş Öncül
Last position:
Freelance Business Intelligence Data Modeler at Vodafone Turkey
- Developed an in-depth understanding of the business processes and data in the corporation
- Assisted in maintaining the corporate data
Andreas Grutz
Last position:
Senior Fullstack .NET (Core) & Angular Developer at IT service provider
- Supported an agile team in the development of a new CRM tool
- Web frontend development (Angular 17 with MDB-Bootstrap, microfrontends, DDD)
- Backend development (C# & .NET 7-9, MongoDB, MassTransit, RabbitMQ, Elasticsearch, microservices, DDD)
- Coordination with stakeholders & product owners
- Assisted in sprint planning
Humayun Shaukat
Last position:
Test Manager at ProSiebenSat.1 Media SE
- Quality assurance for 7 apps and websites as well as Galileo
- Designing, planning and executing tests
- Designing the test strategy in an agile team
- Planning, monitoring and coordinating test activities
- Reviewing and matching test cases
- Documenting test results
- Reviewing found defects
- Collaborating with developers
- Conducting regression tests
- Creating test summary reports
- Participating in various meetings with all stakeholders
- Approach, tools & systems: Jira, Android Studio, iOS, Android, Agile-Scrum
Werner Hendricks
Last position:
Insurance
- Migrations of DB2 databases to Oracle
- Design and creation of new databases based on ODA X7-HA / X9-HA RAC 12cR2 - 19.23 / Data Guard / Grid Infrastructure 19c
- Hardware: ODA X7 X9 / IBM
- Software: Oracle 12c-19.23 / Oracle Linux Enterprise 7.1–8.8
Discover over 15,000 top freelancers
Statistics of experts using PL/SQL
Aggregated from the professional profiles of matched freelancers.
Experience
28 years (Germany: 25 years)
Position duration
2.5 years (Germany: 3.2 years)
Positions per freelancer
17
Top business areas
Information Technology, Business Intelligence, Project Management
Top industries
Information Technology, Government and Administration, Automotive
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
100% (Germany: 84%)
Master's degree or higher
75% (Germany: 53%)
Doctorate
25% (Germany: 7%)
Certifications per freelancer
5 (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 Dusseldorf 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 Dusseldorf using PL/SQL
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
Understanding Oracle PL/SQL Development
Oracle PL/SQL is a procedural extension for SQL designed for seamless integration with Oracle Database systems. It allows specialists to write complex database logic using blocks of code, control structures, and variables. This technology forms the backbone of transactional systems, enterprise data warehouses, and critical financial platforms.
Typical Use Cases and Applications
Companies utilize this database language to build secure, scalable, and high-performance backend systems. It is particularly crucial for data-heavy operations where latency must be minimized.
- Developing complex stored procedures, functions, and packages
- Writing database triggers for automated auditing and data validation
- Executing large-scale ETL pipelines and data migrations
- Creating batch processing jobs for nightly financial settlements
The Oracle Ecosystem and Tooling
Experts in this field navigate a specialized suite of administrative and development tools. They utilize Oracle SQL Developer, PL/SQL Developer, and Toad for Oracle to write and debug code. They integrate database logic with enterprise Java backends, Oracle APEX applications, and business intelligence systems.
Local Database Expertise in Dusseldorf
Dusseldorf is a hub for telecommunications, consulting, and retail companies managing massive database infrastructures. Local firms frequently require freelance specialists to optimize legacy systems, scale existing structures, or execute cloud migrations. These projects demand flexible, high-level expertise.
Essential Technical Skills to Evaluate
A proficient database specialist possesses deep knowledge of relational database theory and advanced SQL optimization.
- Query tuning and performance optimization using execution plans
- Exception handling and secure database transaction management
- Bulk collection and binding techniques for high-performance processing
- Database design, indexing strategies, and partitioning schemes
Successful Project Collaboration
Database specialists must collaborate closely with system administrators, backend developers, and business analysts. While much of the development and optimization can be conducted remotely, critical phases like deployment and integration testing often benefit from occasional on-site alignment. Strong communication skills ensure that complex business requirements are accurately translated into robust database schemas.
Frequently asked questions
Need clarity? These are the questions we hear most often about PL/SQL.
Companies use PL/SQL to write server-side database logic, such as stored procedures and database triggers, that process data directly inside the Oracle Database. This reduces network traffic and increases application performance by executing data-intensive operations where the data resides.
While standard SQL is a declarative language used to query and manipulate data, PL/SQL is a procedural language that adds control structures like loops, conditions, and variables. This allows developers to build complex business logic, perform error handling, and execute sequential commands within the database engine.
A professional working with PL/SQL should be highly proficient in IDEs like Oracle SQL Developer, Toad, or PL/SQL Developer. They also need a solid understanding of database administration tools, Unix shell scripting, and version control systems like Git to manage database deployment scripts.
Experienced PL/SQL specialists optimize performance by analyzing SQL execution plans, implementing proper indexing, and using bulk processing features like BULK COLLECT and FORALL. They also restructure poorly written queries and design efficient data partitioning schemes to handle high transaction volumes.
Most development and scripting using PL/SQL can be completed remotely. However, for critical database migrations, initial system architecture alignment, or strict security integrations, companies in Dusseldorf might request occasional on-site collaboration.
While English is common in international tech teams, many enterprises in Dusseldorf prefer PL/SQL specialists who speak German because database schemas directly model local business rules and legacy documentation.
You can evaluate a PL/SQL expert by reviewing their track record with complex Oracle schema designs and database migrations. A technical discussion focusing on deadlock resolution, transaction isolation levels, and execution plan analysis will quickly reveal their depth of expertise.
Yes, PL/SQL remains highly relevant because many enterprise cloud solutions run on Oracle Cloud Infrastructure or managed relational database services. While some companies migrate logic to microservices, keeping critical, data-intensive transactions close to the storage layer remains the most performant architectural choice.
The average hourly rate of freelancers in Dusseldorf, Germany who have used PL/SQL in their recent projects is 90 €, which corresponds to a daily rate of about 717 € based on an 8-hour working day.
Of the freelancers in Dusseldorf, Germany who have used PL/SQL in their recent projects, 100% hold at least a Bachelor's degree, 75% hold at least a Master's degree, and 25% hold a doctorate.
On average, freelancers in Dusseldorf, Germany who have used PL/SQL in their recent projects have 28 years of professional experience, with a single engagement typically lasting around 2.5 years.
The most common languages among freelancers in Dusseldorf, Germany who have used PL/SQL in their recent projects are German (100%), English (100%), and French (33%).
The most common industries among freelancers in Dusseldorf, Germany who have used PL/SQL in their recent projects are Information Technology (89%), Government and Administration (78%), and Automotive (67%).
The most common business areas among freelancers in Dusseldorf, Germany who have used PL/SQL in their recent projects are Information Technology (100%), Business Intelligence (78%), and Project Management (67%).
Main locations of FRATCH Experts, who have recently used PL/SQL
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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Essen 
Hanover 
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FRATCH CEO
