IT Consultant

Assignment for Ferchau GmbH, Karlsruhe at a bank in Baden-Baden.

• Eliminated security risks and modernized/optimized various banking applications (legacy code).
• Hardened applications against cyber attacks after penetration tests.
• Enhanced existing applications and tools using Perl, CPAN, MS SQL Server, HTML, JS, Ajax, Google Chrome.

Assignment for etengo GmbH, Mannheim at a medical software provider in Koblenz.

• Developed Bash scripts to test IPsec authentication and verification (Ubuntu Linux, Jira, Confluence, tcpdump, dig, openssl, ssh, nmap, wget).

• Developed and updated a web shop with product management and placement.
• Implemented legal requirements.
• Automated order processing through invoicing and monthly newsletter distribution by email.
• Technologies: LAMP, Ubuntu, Apache, Perl, PHP, MySQL, MariaDB, phpMyAdmin, Pegasus Mail, MS Excel, VBA.

Assignment for Hays AG, Mannheim at a telecommunications provider in Münster.

• Problem management in invoicing for service providers.
• Handled and reconciled billing issues using Unix and Windows tools within a customer care and billing system (CARMEN, SPAS, cwb).
• Technologies: SunOS, HP-UX, Oracle 8/9, Perl, bash, awk, TOAD, PL/SQL, SQLPlus, MS-SQL, XML, ClearCase DDTS, ITIL.

Assignment for ASCENA-IT (Hays AG) at a telecom provider in Darmstadt.

• Analyzed and developed a high-level IT concept for multi-tenant capability of an archiving system.
• Prepared, executed, and evaluated load tests for “online billing”.
• Technologies: TANDEM, Perl, VBA.

• Built, managed, and administered the network of a toolmaking company including server connections to workstations and a heterogeneous CNC machine park.
• Migrated servers from Novell NetWare to SuSe Linux.
• Implemented asynchronous data mirroring.
• Created backups with custom Perl scripts and rsync.
• Ensured high availability.
• Technologies: Samba, FTP, NFS, Perl, rsync, TeamViewer.

Direct assignment at a software company in Wiesbaden.

• Specified and implemented a SINEC-AP interface on TANDEM.

Direct assignment at an electronics company in Ladenburg.

• Supported and implemented a maintenance control system B40 on DEC VAX in Pascal.

Direct assignment at an electronics company in Bremen.

• Designed and implemented a resource manager (master and slave) on CN-PDU network basis for a Bundeswehr training device (SGI Challenge, Ethernet under UNIX in ADA).
• Converted terrain database and access functions from C to Ada (DEC Ultrix, SGI Challenge) with cross-development on PC under ActivAda for Windows (GUI).
• Designed and implemented an offline generator and online processing for computed values and output signals within the measurement processing of a nuclear power plant simulator (DEC Alpha OSF/1, C, cross-development on PC under Linux, X11).
• System analysis for the graphics component of a nuclear power plant simulator (DEC Alpha, OSF/1, C).
• Designed and implemented a topology data generator for a tram simulator (SunOS, Solaris, Evans & Sutherland, C, C++).
• Designed and implemented a graphical element manager for a Bundeswehr training device (CCC, SGI Indigo/Challenge, Ethernet under UNIX in ADA and C).
• Designed and implemented a data initialization system and curve display for process visualization of a power plant simulator (MPR 1300, META).
• Led a 3-person team: detailed specification, design, implementation, testing, and commissioning of a multiprocessor system for data distribution on the research vessel METEOR II (MPR1300, META).
• Designed and implemented migration of an Atlas maintenance control system to a new database system (DHS) with process and simulation layers.
• System design and implementation of process visualization for a power plant simulator on MPR1300 in META.
• Designed and implemented components of a simulation system for firefighting training on MPR1300 in META.
• System design and partial implementation of a radar training and education system on HP 9000/300 under HP-UX in ADA.
• Designed, implemented, and tested an error analysis system for MPR2300 on DEC VAX under VMS in ADA.
• Designed, implemented, and tested an audio-frequency remote control system for the Atlas maintenance control system AWL 1300 on MPR1300 multiprocessor in PEARL.
• Designed, implemented, and tested functions (protocol functions, counter value processing) for the Atlas maintenance control system AWL1300 on EPR1300, MPR1300, and -SD (synchronous duplex) in PEARL, database system (DHS).

Assignment for a software company in Frankfurt at the Hessian Central Data Processing Center (HZD), Wiesbaden.

• Project group DOMINIG II (information network of several hospitals using a centralized IT system).
• Technologies: DEC PDP-11, FORTRAN.