Oracle Developer

• Jan 2022 - Present

Oracle PL/SQL Developer

• May 2020 - Dec 2021

Oracle APEX developer

• Jan 2017 - Apr 2020

Responsible for the design and development of Vertex, an APEX application to support the buying and selling processes of current and natural gas for the consumer as well as the business market. Modules are for instance Portfolio Management, Nomination, Pricing, Facturation, Contract Management (PPA & GVO) and Trade Management. Much of the data is clarified by different types of charts. Also contains a module which makes it possible to remote control wind farms on the basis of several parameters like for instance price forecasting. Communication protocol is OPC XML. Used techniques are APEX 18.2, DB 18c, Highcharts, ReST, JSON and XML.

Senior Oracle Developer

• Jan 2014 - Dec 2016

Designing and building ambitious extension of custom made vehicle planning system to support automatic planning and car sharing. Used techniques are Oracle Designer/Developer/Headstart/CDM Ruleframe 10/11g and Apex 4.2/5.0. Interfacing using SOAP web services. Designing and building ambitious extension of custom made vehicle planning system to support automatic planning and car sharing. Used techniques are Oracle Designer/Developer/Headstart/CDM Ruleframe 10/11g and Apex 4.2/5.0. Interfacing using SOAP web services.

Freelance Oracle Software Developer

• Apr 2012 - Dec 2016

Delivering services on contract basis related to custom software development based on Oracle technology. Specialized in Data Modeling, Oracle Apex and PL/SQL programming. Delivering services on contract basis related to custom software development based on Oracle technology. Specialized in Data Modeling, Oracle Apex and PL/SQL programming.

Senior Oracle Software Developer

• Mar 2013 - Jul 2013

- Setup and configuration of IT production architecture to support compound screening processes within Pivot Park Oss. Environment contains Oracle Virtual boxes with RedHat Linux, Oracle 11gR2 databases, Glassfish 4, APEX 4.x, APEX Listener 2. Including software setup and configuration of IDBS Activitybase, IDBS eWorkbook and custom Vivenics software. - Writing technical documentation of three ASPIRE subsystems (APEX/PLSQL) that I developed in may/june/july 2012. - Developing SamTrack mobile demo with APEX 4.2

Senior Oracle Software Developer

• Aug 2012 - Mar 2013

- Technical Lead of WoW project; developing a management performance system with Oracle APEX 4.1.1 - Modification of existing KPN Contact application, involving APEX 4.1.1 and complex PL/SQL. - Loading and processing data of different KPN systems into a data warehouse to help the KPN to be compliant with OPTA regulation. Complex PL/SQL. - Loading and processing HR data from Rijkswaterstaat into a data warehouse to support management reporting. Complex SQL. - Technical Lead of WoW project; developing a management performance system with Oracle APEX 4.1.1 - Modification of existing KPN Contact application, involving APEX 4.1.1 and complex PL/SQL. - Loading and processing data of different KPN systems into a data warehouse to help the KPN to be compliant with OPTA regulation. Complex PL/SQL. - Loading and processing HR data from Rijkswaterstaat into a data warehouse to support management reporting. Complex SQL.

Senior Oracle System Developer/Engineer

• Feb 2002 - Mar 2012

As lead developer responsible for the design and build of several application systems based on Oracle technology. Converting user requirement specifications to working application systems, covering the complete software development lifecycle. Taking the lead technical role in projects and providing technical support to other developers. Main techniques: Oracle Designer/Developer, Headstart/CDM/CDM Ruleframe, SQL, PL/SQL, APEX 2 to 4.1.1, Javascript, JQuery, XML, Java, Oracle 7.1 to 11gR2.

Oracle Developer

• 1996 - Jan 2002