• Operation Systems
• OS X , iOS , Linux
• PM
• Agile, SCRUM
  
• Technology
• Web Technology
• HTML5, XML, Web 2.0, JavaScript, REST / SOA, Cloud
• Services
• Database (SQL/NOSQL), Web services, JMS
  
• Languages
  
• Objective-c, C , C++
  
• iOS 3.x , 5.x (iPhone and iPad)
• XCode 3.x , 4x
• Java/J2EE (Spring, Spring MVC, Spring roo, Hibernate , Tiles)
  
• Ruby Scripting
  

• Web Application Development
• HTML, CSS, XML, JavaScript, AJax,JSON, DOM.
• Hibernate, JDBC, Aspect-J.
• Servlet API, JSP,JSF (JSF-Frameworks: Woodstock, IceFaces, Struts, MyFaces)
• Webservices (REST, SOAP).
• Tomcat5/6, Tomcat IIS Connector
• JUnit/DBUnit/HTTPUnit.
• Java Application Development (Server, SWING Client, JSF (Client))
• JMS, Hibernate, JDBC 
• Restfull Webservices , SOA
• Multi threaded Server Design, Implementation, Testing
  
• CMS/DMS Clients/ Server Components  
• JDOM, XML,XSLT-FO, XQuery.
• FOP, IText, PDFBox, Java Media API, HTTPClient, Jersey, ...
• IDE / Tools
• Netbeans, Eclipse, ANT, Marven, CVS/Mercurial, Plone.
• UNIT Testing, Bucktracking, Profiler, Debugger.
• Source Control (CVS, SVN, Mercurial, GIT).
• Database
• MS SQL Server 2000 / 2005 / 2008
• PostgreSQL 8.x , Oracle 9i/10i/Express, MySQL 5.x.
• Other
  
• IBM Websphere MQ, Glassfish Application Server, Tomcat, Apache HTTPD, Saperion DMS.
• Industry 
  
• Mostly Automotive

1. IT Security
1. Firewall-, VPN-, Linux/UNIX, Clients, (MS), Web Security - Security Audits.
• Firewall and VPN Setups, Anti Spam Solutions, Network Monitoring and Troubleshooting.
  
2. UNIX and Opensource Solutions
   
• Internet Service related UNIX / LINUX Solutions (Web, Mail, DNS, ..).
• Java Application Servers .
• Scripting und Programming.
  
• Customer Support.
• Remote Access Solutions
  
3. UNIX , VPN and Firewall Trainings.
4. Industry
1. Trade, Production

Systemadministration (UNIX), Webmaster,IT / IT-Security Consulting and Software Development.

1. Web Application Development
   
• Opensource based Onlineshop Solution  based on Linux, PHP and Sybase Database.
• Web Portal Programming using Java technology (Servlets, JDBC, Tomcat, XML).
2. IT Security
• Security Audits
  
• Server Hardening (Solaris, Linux and BSD).
  
• Firewall and VPN Projects (Watchguard, Checkpoint, Cisco PIX and Linux).
• Costum Firewall Solution (Linux and Solaris with ipf). 
3. Network Support for a larger Organisation.
   
4. UNIX (Solaris / Linux) based Internet related Projects (Service like Mail, DNS, IMAP etc.).
5. Industry
1. Banking , Insurence, Trade and Production

• Projects
  
• Migration of a text based application to a windowing Environment. Restructuring to a Client Server Architecture. 
• Database related work with Informix Database Servers (SE 4.x and Online) 6.x and Development Tools (4GL and Informix Hyperscript).
  
• Technology
  
• Plattform DEC Alpha with OSF1. 
• Industry
• Software for Housing Industry
  

• Software development in C (UNIX).
  
• Planing and coding of a serial communication (file transfer) Software  . 
• UNIX System Administration (SUN Workstations) .
• University Institut (Automation).
• Industry
• Shipyard Project

• Application Development
• Programing Languages
•  C, Objective-c, C++, Python, Ruby, Perl, UNIX Shellscripting, Java/J2EE, E-SQL, SQL, NOSQL, Lisp, Prolog, PHP.
• Java and related Technologies
• SDK ,J2EE, SWING, EJB,  JDBC/JPA (Toplink, Hibernate), RMI,  Conccurency, Servlet API, PDF/XML , media API (Image processing).
• JSP, several JSF based Webframeworks (Woodstock, sruts, Icefaces), XML, XPATH, JMS.
• IDE's
• Xcode, Metrowerks Code Warrior, NetBeans, Eclipse.
• Analysis and Design
• OOA, OOD, MDA, XP, Agile Programming, UML, Database Modeling.
  
• Programing Tools
• Debugger, Profiler, Unit Testing (JUnit), Source Control Systems (git, mercurial, rccs, cvs and svn), ANT, JAR, javadoc ..
  
• J2EE APP Server/Servlet Container and middleware
• JBoss, Apache Tomcat, Glassfish, Websphere (Community Edition), Websphere MQ, Active MQ

• IT / Network and Application Security
  
• Firewall solutions based on Solaris/ipfilter - OpenBSD pf etc
• VPN Solutions
• Intrusion Dectection Systems
• PKI infrastructure
• Security Audits , social Engineering etc.
• Source Code Auditing (secure programming).
• Opensource 
• Webshop and Portal Sulutions
• Linux Kernel Builds
• virtualsisation with UML (User Mode Linux) XEN and VBOX
• RPM building
• local YUM Repositories
• High Availability
• Loadbalancing

• Network Services
• DNS, Radius, SNMP, SMTP (Sendmail/ Postfix) , POP3 (qpopper u.a.), IMAP4 (UW, Cyrus, Courier ), FTP, TFTP, DHCP.
  
• Webservices
• HTTP(S) (Netscape,  Apache), HTTP Cache/(reverse) Proxy (Squid)
• JBoss, Tomcat , Glassfish, Websphere.
  
• Security Solutions
  
• Antivirus (CLAMAV / HAPV) und AntiSPAM Solutions
  
• Firewalls 
• Watchguard, Fortinet, PIX and Opensource Firewalls
• Relational and OO Databases
  
• PostgreSQL, MySQL, Sybase, Oracle, DB2, Informix, MS SQL Server 2000/2005
  
• Networking
  
• Routeing , Bridgeing
• QoS
• Wireless Networks
• Switches
• Monitoring (SNMP)

• Solaris & Opensolaris
• Intel and Sparc from SunOS4 up to Opensolaris (Nevada)  
• OS X
• 10.4 Tiger , 10.5 Leopard
• Linux 
• Redhat / Fedora, Debian / Ubuntu, Gentoo, SuSE, Mandrake
  
• BSD
• FreeBSD 3.x - 6.x , OpenBSD 2.x - 4.x , NetBSD 1.x - 2.x
  
• MS
• NT, W2K, W2003, XP, Vista
• Others
• OSF1/True64/digital UNIX, Irix, HPUX , 44BSD (VAX) and AIX.
  

• Security Audits , Firewalls / VPN Solutions
  
• Checkpoint FW-1 / NG
• CISCO PIX
• Watchguard  Firebox, Watchguard VCLASS , Watchguard Soho
  
• Fortinet (Fortigate) Firewalls
  
• Sonicwall Firewalls
  
• IPFilter 3.x (*BDS and Solaris)
  
• Selinux / Linux Firewalls (ipfadm/ ipchains/ netfilter)
  
• OpenBSD Packetfilter (pf und ipf)
  
• HTTP Proxys with Netscape Enterprise and SQUID, HTTP(S) reverse Proxy (Squid), SOCK4/5 Server
• VPN : Watchguard, SSH,  Fortigate,  OpenBSD, Linux, FreeBSD, Cisco.
  
• HA Solutions (Watchguard)
  
• Security Tools/Scaner:  ISS, Nessus, Saint, Cybercop, Retina, nmap etc.
  
• IDS Systems : Snort , Tripwire
  
• Server Hardening
  
• Loganalyzer and Network MonitorinG

• Hardware
• SUN Sparc, DEC Alpha, Apple, PC (x86) , Cisco, HP, 3Com, DLINK
  
• RAID Systems (Hard- and Software based)
• UPS
• Storage and Backup
  
• Language: DE and EN
  
• Driving License