SkillsX

Skill level (legend)

  • Many years of project experience
  • Several years of project experience
  • Very good knowledge
  • Advanced knowledge
  • Good knowledge

Programming languages

  • C/C++
  • Java
  • JavaScript
  • PHP
  • Python
  • Perl
  • Bash
  • Shell
  • Processing
  • Assembler
  • Smalltalk
  • ObjectiveC
  • C#
  • Fortran
  • Pascal
  • VisualBasic
  • BASIC
  • TurboPascal
  • Modula2
  • Delphi
  • Eiffel
  • Oberon

Operating systems

  • Windows 3.x/95/98/NT/2000/XP/Vista/7/10
  • Linux
  • macOS
  • OS/2
  • MS-DOS
  • Android
  • iOS
  • Unix System V
  • NextStep
  • Aix
  • SINIX
  • Solaris
  • SunOS
  • VMS
  • FreeBSD
  • SCO Unix
  • Ultrix
  • HP-UX
  • Xenix
  • OpenBSD
  • AmigaOS
  • Novell NetWare
  • BeOS
  • Oberon
  • QNX

Cloud Development

  • Amazon Web Services / AWS
  • Google Cloud Computing / GCP
  • Microsoft Azure

Mobile Development

  • Android
  • iOS
  • Cordova / PhoneGap

Web technologies

  • HTML5, HTML
  • CSS3, CSS
  • AJAX
  • WebServices, SOAP, REST
  • WebAssembly / WASM

Frameworks / Libraries / APIs

  • Node.js
  • Express
  • jQuery
  • Lodash
  • Underscore.js
  • D3.js
  • three.js
  • Processing.js
  • p5.js
  • GreenSock Animation Platform / GSAP
  • Bootstrap
  • AngularJS
  • Backbone.js
  • Bootstrap
  • Semantic UI
  • Bulma
  • Java SE, J2SE
  • Swing
  • WindowsSDK
  • OS/2 Presentation Manager
  • Qt
  • wxWidgets
  • X-Windows
  • OSF/Motif
  • OpenLook
  • SunView
  • Java EE, J2EE
  • JSP
  • EJB
  • Smarty/PHP
  • Google Web Toolkit - GWT, GXT, GWT EXT
  • Vaadin
  • JSF
  • Spring
  • Cordova (PhoneGap)
  • Electron
  • Chromium Embedded Framework / CEF
  • Java ME, J2ME
  • MIDP
  • Atom
  • RSS
  • RDF

Networking

  • HTTP
  • HTTPS
  • SSL
  • TLS
  • SSH
  • FTP
  • Telnet
  • NetBEUI
  • NetBIOS
  • SOAP
  • NTP
  • POP3
  • SMTP
  • SNMP
  • LDAP
  • IRC
  • NFS
  • NNTP
  • XMPP/Jabber
  • TCP
  • UDP
  • SPX
  • IP
  • IPSec
  • IPX
  • ICMP
  • X.25
  • Ethernet
  • TokenRing
  • HDLC
  • ISDN
  • DECNet
  • IBM SNA
  • RMI
  • Corba
  • RS232
  • MIDI
  • SPI
  • WebSphere MQ
  • IBM Communication Server
  • IBM Personal Communications
  • Microsoft Communication Server
  • OS/2 LAN Manager
  • Novel Netware

Database systems

  • MySQL
  • PostgreSQL
  • LevelDB
  • MongoDB
  • JDBC
  • ODBC
  • Oracle SQL
  • DB2
  • SQLite
  • OS/2 Database Manager
  • Informix SQL
  • Sybase SQL
  • Gupta SQL
  • MS Access
  • dBASE
  • FoxPro
  • Paradox
  • Clipper

Application Server / Web Services

  • Apache Tomcat
  • JBoss
  • BEA WebLogic
  • SOA
  • SOAP
  • WSDL
  • UDDI
  • XML

Crypto

  • Bouncy Castle
  • Spongy Castle
  • OpenSSL
  • GPG
  • PGP

Financial Services / Banking / Special hardware

  • JBF / Java Banking Framework (Fiducia & GAD IT AG)
  • LANDP
  • FBSS
  • FBSI
  • J/XFS
  • XFS
  • PC/Integrator
  • CSCW32
  • IBM 5994 Service Terminal
  • IBM 4737 Service Terminal
  • IBM 4725 Account Statement Printer
  • IBM 4721 Account Statement Printer
  • IBM 4722 Passbook and Slip Printer
  • Ascom Teller Assist Units
  • IBM 4733 Teller Assist Unit
  • DeLaRue Teller Assist Units
  • Nixdorf Teller Assist Units
  • IBM 478x Automatic Teller Machines
  • Nixdorf 58xx Automatic Teller Machines
  • CIM86 - Card Identification Module
  • EPP - Encrypted Pin Pad
  • Several Magentic Stripe Readers/Writers