About

Work Experience

• Developer opensource software , Nvt

  Jan, 1999 - Present

• software developer, BroadForward

  Aug, 2020 - Jul, 202111 months

  Implementing new functionality, solving bugs, doing performance enhancements.

  Working with protocols like SCTP/TCP/UDP, SS7, Diameter, DNS/ENUM, HTTP/2, SIP, etc - telecom oriented.

  Primary programming language: C, operating system: Linux (Fedora / RedHat / CentOS), version control: git

  BroadForward is leader in intelligent signaling software for 2G/3G, 4G/LTE, 5G, IMS, Fixed, Wi-Fi, IPX and M2M/IoT networks. BroadForward delivers core network products for routing, interworking, security and number portability, designed for convergence across legacy and next generation networks. BroadForward is a multiple GSMA Best Mobile Technology nominee.

• Software Developer, Profound BV

  Dec, 2018 - Dec, 20202 years

  Developing and maintaining embedded applications as well as supporting applications for windows and
  linux. The targets were measurement devices.

  Worked with: C, C++, Python, SVN, GIT, Keil, stm32cubeide, ARM, QT

  Profound develops and manufactures pile testing equipment and geotechnical monitoring systems for professional use.

• Software Developer, Cornerstone b.v.

  Dec, 2016 - Dec, 20182 years

  Worked on migration of mainframe software from e.g. assembly/cobol/pascal to other programming languages.
  Worked with HLASM, PL/I, COBOL, Pascal, C++, SVN, Git, RedMine

  Cornerstone is providing services and software solutions for the analysis, documentation, quality measurement and automated modernization of legacy software and databases.

• Software Developer, Zarafa

  Dec, 2014 - Dec, 20162 years

  Working on an open source groupware solution written in C++ and Python. Implementing new
  features, fixing bugs in existing code, packaging. Agile/scrum environment.

  Worked with: C++, Python, PHP, Javascript, Jira, Git

  Zarafa provided open source email and collaboration software products. The ZCP platform provided an advanced middleware solution based on Linux as a viable replacement for MS-Exchange.

• Software Developer, Scheidt & Bachmann

  Dec, 2012 - Dec, 20142 years

  Developing on an embedded Linux system (for topping up the balance of an OV-chipkaart (Mifare) as well as retrieving travel products) using C++, bash scripting and python. Creating tools in Java and C++ on microsoft windows.

  Scheidt & Bachmann Nederland (former MCOM) develops devices for the OV-chipkaart platform.

• DevOps Developer, BPSOLUTIONS. MAKE DATA WORK

  Dec, 2006 - Dec, 20115 years

  Developed a system for transporting money to the backoffice for a supermarket (embedded 8051 platform, in C, datacommunication over RS485, PHP web interface, database in MySQL).

  Developed a GUI for Nagios in Java.

  Installation and configuration of IBM Storage solutions, IBM AIX servers (with LPAR virtualization) and SAP BI accelerator clusters.

• DevOps Developer, Amsterdam UMC

  Dec, 2005 - Dec, 20061 year

  Performed system administration on Linux (RedHat Enterprise Linux) and Sun Solaris. Designed and implemented scripting and websites for infrastructure management.

• Software Developer, Rabobank

  Dec, 2002 - Dec, 20042 years

  Worked on the application that ran on the ATMs of Rabobank at that time. I worked on the frontend but most the time on the management interfaces. This involved encryption, analysis of network performance, etc.

• Software Developer, FTR Computing & Consulting

  Jan, 1997 - Dec, 20036 years 11 months

  Developed all kinds of applications in C++, JAVA and C. Did system administration of OS/2, Windows, Linux, NCR MP/RAS and SUN Solaris. Platforms like embedded 8051, x86.

  In 2001 I worked on an in-house application. I wrote the code to interface between a VRS (voice response system) and the main application.

• Software Developer, De La Rue

  Dec, 2001 - Dec, 20011 day

  Preparing applications for the EURO-migration: analysis and adapting.
  The applications were for controlling money counters (notes, coins) and dispensers.

• Software Developer, Postbank

  Dec, 2001 - Dec, 20011 day

  Developed a module that allowed data-communication over X.25 between client terminal and host servers.

• Information Technology Security Specialist, (secret)

  Dec, 2001 - Dec, 20011 day

  Did a security audio of the file-, mail- and database-server as well as the rest of the IT infrastructure and the flow of information to external parties.

• Software Developer, CPS Europe

  Dec, 2001 - Dec, 20011 day

  Developed a multi-threaded network stack for a chipcard terminal.

• Software Developer, Nexus B.V.

  Dec, 2000 - Dec, 20001 day

  Development of a website (frontoffice & backoffice) for loans in PHP on RedHat Linux. Implemented an interface to the application to send SMS messages via the GSM network.
  Also did system administration for the development- and production servers.

• Software Developer, Rottink Reisbureau

  Dec, 2000 - Dec, 20001 day

  Optimizing and fixing bugs in a Java Silverstream application. Performance analysis of SUN Solaris system.
  The application was used by a travelling agency for booking travels etc.

• Software Developer, Getronics

  Dec, 1999 - Dec, 19991 day

  Developed an interface between the SNA protocol and IBM MQ series.
  Implementing and fixing bugs in middleware migrated from OS/2 Warp to Windows NT (and later Windows 2000).

• Software Developer, NCR Corporation

  Dec, 1997 - Dec, 19981 year

  Worked on an embedded system for consumers that allowed people to top-up their "chipper"-card. The appliance ran UNIX, the development environment ran NCR MP/RAS (also a UNIX).

• Software Developer, NCR Corporation

  Dec, 1997 - Dec, 19971 day

  Designed and implemented management interface for a client-terminal. It allowed software- and data-updates and status-updates to be performed via a TCP/IP network. The application ran on OS/2 Warp.

• Software Developer, De La Rue

  Dec, 1997 - Dec, 19971 day

  Designed an application to control a money counting and sorting device ("Innomat").

  This involved implementing a driver which communicated with the device, and creating a GUI for configuring the device (sort order for example). The GUI could also produce statistics and export results to a backoffice mainframe.

Skills

Certificates

Volunteer Work