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Profile Status: 2021, April, 1st |
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| prename, surname |
Guenther Obermaier |
| address, street |
Eberhardtstrasse 66 |
| ZIP code, address |
89073 Ulm |
| country |
Germany |
| phone |
++49(0)731-262316 |
| mobile |
++49(0)170-7634571 |
| email |
 |
| website |
www.go-itservice.com |
| language skills |
German (native) english (spoken and writing), experience as project language |
| education and degree |
physicist (diploma) (University of Ulm), emphasis computer science and electronics |
| application site |
worldwide |
| availability |
from 2021, April, 1st |
| hourly rate |
from 80 euro |
|
| Hardware |
PC |
3 |
|
| Operating systems |
LINUX (Debian 3.1-10.0, SuSE 5.0-9.2, RedHat) |
3-4 |
| |
UNIX in general |
3 |
| |
Windows XP, 2000, NT 4.0, NT 3.51 |
3 |
| |
Windows 9x, 3.x |
2 |
| |
Windows 3.x |
2 |
| |
DOS |
2 |
| |
AIX 3.x,4.x |
2 |
| |
Unixware 7.x, 8.0 |
2 |
| |
Solaris 2.5,2.6,8 |
2 |
| |
SCO Open Server |
2 |
| |
Novell 3.x |
1 |
|
| Programming languages |
PHP 7, 5, (4,3) |
4 |
| |
perl 5 |
3 |
| |
JAVA, JSP |
3 |
| |
bash,ksh shell |
3 |
| |
SQL |
2-3 |
| |
basic |
3 |
| |
C (Windows,UNIX) |
2 |
| |
Visual Basic, ASP, VBA |
2 |
| |
assembler (68000,6502) |
2 |
| |
modula 2, pascal, fortran |
1 |
|
| network and protocols |
TCP/IP in general |
3 |
| |
REST |
3 |
| |
XML |
3 |
| |
LDAP |
3 |
| |
HTTP |
2 |
| |
SMTP |
2 |
| |
ASN 1 |
2 |
| |
SVG |
2 |
|
| Further skills and products |
Netscape Suitespot 3.x |
4 |
| |
vtiger 7,6,5.4 |
3 |
| |
AJAX, REST, SOAP |
3 |
| |
benno Mailarchiv |
3 |
| |
AltaVista 2.3,3.0 |
3 |
| |
Docusign |
2 |
| |
Apache/Tomcat |
2 |
| |
X-Server (XVision, eXceed) |
2 |
| |
HT-Dig |
2 |
| |
Autonomy KnowServer/Update 1.x |
2 |
| |
OpenLDAP 1,2 |
2 |
| |
SWIG (C-Perl) |
2 |
| |
Eclipse 3.x,2 |
2 |
| |
MS-Office 4,95,97,2000,XP |
2 |
|
| key |
specialist, excellent knowledge |
4 |
| |
very good knowledge |
3 |
| |
advanced knowledge, project experience |
2 |
| |
basic knowledge |
1 |
|
| emphasis |
script development, system administration UNIX, software development (internet) |
|
Projects |
| Duration |
05/2016 - 03/2022 (estimated) |
| Short description |
Porting an application from PHP 5 to PHP 7.0, 7.3, Porting a security critical application for operation on the internet, programming of some REST Webservices |
| Industrial sector |
Telecommunication (T-Systems/iQbis) |
| Type of activity |
- Porting mysql-interface to PDO
- Porting of other deprecated instructions
- Compatibility test on PHP 5 and 7, comparative test
- Hardening applikation against SQL-injection and cross-site-scripting
- Building own REST-framework and several services with certificate testing, using gateways ec.
- Building building new, more flexible pricing layer parallel to the existing one with automated and permanent tests to replace the existing one in the future.
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| Software environment |
PHP 5.6 / PHP 7.0 / PHP 7.3, Apache 2, Linux (Debian 7.0-10.0), MySQL 5.5, Eclipse 3.8
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| Team |
12 |
|
| Duration |
01/2005 - now |
| Short description |
conception, implementation and maintenanace of company network |
| Industrial sector |
Media and Print |
| Type of activity |
- Survey of requirements
- Server installation and maintenance
- conception of backup, firewall, VPN ec
- selection and configuration of hard- and software, eg. 2012: CRM vtiger
|
| Software environment |
Linux (Debian 4.0-10.0), Windows, Samba, postfix, vtiger 5.4-7.1, benno Mailarchiv, PHP 4-7, Apache 2, MySQL/MariaDB 5
|
| Team |
2 |
|
| Duration |
01/2007 - 12/2008 (maintenance until now) |
| Short description |
Web based application for consolidation of database information |
| Industrial sector |
Telecommunications (T-Systems) |
| Type of activity |
- Survey of requirements
- architecture and conception (esp. datamodel)
- Programming datamodel, import and export interfaces.
- Programming businesslogic.
- Programming AJAX user interface.
|
| Software environment |
PHP 4, 5 / PHP 7, Apache 2, Linux (Debian 3.1-10.0), MySQL 5, Eclipse 3, AJAX, Javascript
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| Team |
6 |
|
| Duration |
03/2015 - 04/2016 |
| Short description |
Porting a security critical application for operation on the internet
Maintenance of redundant server cluster |
| Industrial sector |
Telecommunication (T-Systems/iQbis) |
| Type of activity |
- hardening of an already existing Applikation against SQL-injection and cross-site-scripting
- enhancing performance
- monitoring and maintenance of database and applicationserver
|
| Software environment |
PHP 5.3-5.5, Apache 2, Linux (Debian 6.0-8.0), MySQL 5.5, Eclipse 3
|
| Team |
10 |
|
| Duration |
07/2013 - 02/2015 |
| Short description |
Development of multiple sites concept |
| Industrial sector |
Telecommunication (T-Systems/iQbis) |
| Type of activity |
- Enhancement of data model
- Survey of additional requirements
- Enhancement of data model using multiple sites
- Upgrade software for multiple sites
- Implementation inventory database
- Design and programming of abstraction layer
- Performancetuning
|
| Software environment |
PHP5.4, Apache 2, Linux (Debian 6.0/7.0), MySQL 5, Eclipse 3.5
|
| Team |
11 |
|
| Duration |
01/2009 - 02/2013 |
| Short description |
New design of pricing modell for business telecomunication systems |
| Industrial sector |
Telecommunication (DTTS/T-Systems/Lenrox) |
| Type of activity |
- Analysis of existing businesslogic
- Survey of additional requirements
- Design of new pricing modell
- Programming businesslogic.
- implementation of simultaneous usability for both classes for smooth migration
- Design and implementation of a data abstraction layer
- Performancetuning
|
| Software environment |
PHP5, Apache 2, Linux (Debian 5.0/6.0), MySQL 5, Eclipse 3
|
| Team |
12 |
|
| Duration |
07/2004 - 12/2006 |
| Short description |
Migration and enhancement of a system for submitting quotes for telephone systems to a web based application
|
| Industrial sector |
Telecommunications (T-Systems / Quest) |
| Type of activity |
- Survey of requirements
- Programming calculator and configuration system.
- Consolidation and enhancement of the existing system.
- Implementation of offer document as RTF/DOC.
- Graphic view of the system with SVG.
|
| Software environment |
PHP4, Linux (Debian 3.1), Windows 2000, MySQL 4, Eclipse 3, RTF, perl, AJAX, SVG
|
| Team |
8 |
|
| Duration |
08/2002-03/2004 |
| Short description |
Programming of information processing system for train traffic data. |
| Industrial sector |
Logistics (DB-Systems / Plussoft) |
| Type of activity |
- Cooperation on technical architecture and conception, arrangements with the customer.
- Configuration of servers. Programming an operational protoype with PHP4.
- Programming the final system with JSP and JAVA Classes.
- Programming loadgenerator with Perl, testing and performancetuning
- shellscripts for deployment ec.
|
| Software environment |
JSP, JAVA, Oracle9i, PHP4, perl, shell (sh,ksh), make, OpenLDAP 1/2,
Linux (Suse 8.0), Solaris 2.8, SQL, Tomcat 4, Eclipse 2
|
| Team |
10 |
|
| Duration |
05/2002-07/2002 |
| Short description |
specification and programming of an hardware certification tool |
| Industrial sector |
Logistics (DB-Systems / Plussoft) |
| Type of activity |
- Programming of a Perl Modul for use with test scripts to send commands
to hardware (german railway specific) and analysing the results.
- Programming of code generator from ASN-1 (german railway specific) to perl
- Programming of web-interface with php4
- Saving test protocoll using XML.
|
| Software environment |
Perl, C, ASN-1, Swig, Linux (Suse 8.0), XML, TCP/IP, LON, Windows 2000 |
| Team |
3 |
|
| Duration |
10/2001-05/2002 |
| Short description |
Perl scripts for automatic generation of configuration files |
| Industrial sector |
Logistics (DB-Systems / Plussoft) |
| Type of activity |
- Desiging LDAP structures with customer.
- Programming Perl scripts for generation of config-files from a LDAP Database
|
| Software environment |
Perl, LDAP, Unixware 7.1/8.0, SCO Open Server 5, Windows NT, Windows 2000, H.323 |
| Team |
15 |
|
| Duration |
01/2001-09/2001 (one day a week) |
| Short description |
Maintenance of Companys IT infrastructure |
| Industrial sector |
IT-Consulting (BSO2001) |
| Type of activity |
- Administration of server (LINUX) and workstations (LINUX, Win NT/9x).
- Installation and administration internetserver, firewall, router
|
| Software environment |
Linux (Suse 6.3/7.0), Apache 1.3, ipchains, pppoed, ksh, perl,
SAMBA, DNS, ssh, SMTP, Windows NT, Windows 9x
|
| Team |
2 |
|
| Duration |
05/2001-08/2001 |
| Short description |
Development of an internet portal |
| Industrial sector |
Industrial services (DEKRA AG) |
| Type of activity |
- Programming of the media internet site of DEKRA (www.dekra-mediaonline.de) using
OpenSource software and tools developed in own company.
- Administration of server (LINUX), paketfilter.
|
| Software environment |
Linux (Suse 7.0), Apache 1.3, MySQL, PHP4, SQL, MediaOnline, ipchains, CVS, perl |
| Team |
1-3 |
|
| Duration |
04/2001-05/2001 |
| Short description |
Development of an internet music portal |
| Industrial sector |
Media (Classixx AG) |
| Type of activity |
- Programming the internet site for selling classical music.
- Managment of development.
- Support for content editors.
- Administration of server.
|
| Software environment |
Linux (Suse 7.0), Apache 1.3, MySQL, PHP4, MetaHTML, SQL, MediaOnline, perl |
| Team |
3 |
|
| Duration |
1/2000-4/2001 (2 days a week) |
| Short description |
Development of an userinterface and software encapsulation for search engine |
| Industrial sector |
Banking (Dresdner Bank / TISCON AG) |
| Type of activity |
- Programming of the encapsulation in perl and a prototype in C.
- Building of the userinterface.
- Adaption of the interface for differnent departments.
- Support for application.
- Installation and administration of the servers (Sun E250, E450).
|
| Software environment |
Solaris 2.6, Netscape Enterprise Server 3.6, AltaVista 2.3/3.0 with C-API, IP-Filter |
| Team |
1 |
|
| Duration |
1997 - 2005 |
| Short description |
Conception, implementation and support for intranet |
| Industrial sector |
Logistics (Lekkerland) |
| Type of activity |
- Conception and design of intranet, email and scheduling for a Company wit aprox. 2000 employees and 25 brances in Germany.
- Installation of servers, relocation and merging of some servers.
- Software updates.
- Rearrangement of domain structure and conversion of user database with scripts
- Incidental troubleshooting
- Remote maintenance, weekly and by the day activity
|
| Software environment |
AIX 3.x,4.x, Netscape Enterprise Server 3.x, Directory Server 3.x, Messaging Server 3.x,
Proxy Server 3.5, Calendar Server 3.5, Perl , LDAP
|
| Team |
1-4 |
|
| Duration |
3/2000-1/2001 (3 days a week) |
| Short description |
Development of an internet portal |
| Industrial sector |
Marketing (White-Lion / DEBIS) |
| Type of activity |
- Programming of various software modules, e.g. tracing of user behaviour.
- Integration of an autonomy search engine into the portal.
- Administration of development servers.
|
| Software environment |
Solaris 2.6, Linux (Suse 6.4,7.0), Apache 1.3, Oracle 8, PHP3, perl,
Autonomy KnowServer/Update, CVS, SQL |
| Team |
3-10, Project language: English |
|
| Duration |
1999-2000 (2 days a week) |
| Short description |
Y2K tests of various products |
| Industrial sector |
Banking (Dresdner Bank / TISCON AG) |
| Type of activity |
- conformance tests of various software products at a bank for the jear 2000.
- Administration of the test computers (Sun E250, PC's).
- Installation of operating systems, software and tests
- Reporting.
|
| Software environment |
Solaris 2.6, Solaris 2.5, Linux (Red Hat 6.x), Windows NT 4.0, Netscape SuiteSpot,
IE, diverse Serverprodukte, perl
|
| Team |
|
|
| Duration |
1996-2000 (5 days a week in the beginning, later 1 day a week) |
| Short description |
network administration with Novell, Nindows, WindowsNT and UNIX |
| Industrial sector |
IT-consulting (TISCON AG, former PP Systemhaus) |
| Type of activity |
- Installation of operating systems, networks, application software and peripherals.
- Selection and configuration of hard- and software components.
- Administration of local networks and users.
- Hotlinesupport for standard software and application software of sales department
(X-server, TCP/IP, M$-products, ODBC-solutions etc.).
- Backup of servers and client PCs.
- Troubleshooting the PCs.
- Maintenance of internet-connection and firewalls with ipchains and FireWall 1.
|
| Software environment |
Windows NT 4.0, 3.51, Windows 3.11, UNIX, Novell, X-Server, M$-Products, TCP/IP,
ODBC, WWW, Internet, ERP, Oracle, Arcserve, Linux, FireWall 1
|
| Team |
1-3 |
|
| Duration |
1995-1996 |
| Short description |
Development of a property management software |
| |
various small projects |
| Software environment |
Windows 3.11, C for Windows: Watcom C 10.0/10.1 |
|
| Duration |
1988-1995 |
| Short description |
Study of Physics with emphasis computer science and electronics |
| Software environment |
UNIX, C, Modula II, Fortran, Windows 3.1, Borland C |
|
| Duration |
1980-1988 |
| Short description |
Programming as a hobby |
| Environment |
TRS80, TI99/4A, VC64, ATARI ST in C, Basic, Assembler |
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