Oracle (SQL + PL/SQL), MS Access, MySQL database design. IT + web application support
Aktualisiert am 28.09.2026
Profil
Freiberufler / Selbstständiger
Remote-Arbeit
Verfügbar ab: 12.10.2026
Verfügbar zu: 100%
davon vor Ort: 60%
PL/SQL
Oracleentwicklung
Datenbankdesign
SQL
Datenanalyse
ChatGPT
XSL
Python
Datenbankmigration
Datenmigration
Performance Analyse
Telekommunikation
CRM
Billingprozess
Order Fulfillment
Applikationsbetreuung
Applikationsüberwachung
Linux
Visual Basic
HTML
XML
Migrationstool
Webapplication
English
Mandarin
HSK Level III
Chinese
HSK Level III
Dutch

Einsatzorte

Einsatzorte

Zürich (+200km) Bern (+50km) Lausanne (+150km) Basel (+200km)
Deutschland, Schweiz, Österreich
möglich

Projekte

Projekte

3 Jahre 8 Monate
2022-11 - 2026-06

Migration of two legacy document management systems

Customer Relationship Application Specialist
Customer Relationship Application Specialist
  • Performed complete migration of two legacy document management systems to a new application.
  • Provided technical support for a document-generation application developed in Perl.
  • Executed mass customer product migrations using an internally developed mass-order handling tool.
  • Analysed data, optimized queries and improved database performance during migration projects.
  • Facilitated process continuity during critical IT system transitions.
Sunrise
Zurich, Switzerland
19 Jahre 2 Monate
2003-09 - 2022-10

Reviewed IT change requests

E2E Solution Expert SQL Oracle PL/SQL XML/XSLT/XQuery ...
E2E Solution Expert
  • Worked with SQL, Oracle PL/SQL, XML/XSLT/XQuery, Clarify CRM v10, Windows and Linux within service-oriented architecture environments.
  • Reviewed IT change requests, including document review and solution design.
  • Led implementation of a Java/MySQL ONP application (2003?2008), including vendor integration, operational support, defect research and reverse engineering.
  • Developed additional tools including error tracking and application front-ends.
  • Technical expert for document-management systems, including data-content analysis, testing and system migrations.
  • Technical expert for the successor ONP application (2008?2021).
  • Supported area-code migration, middleware configuration for order orchestration and mobile product-line implementation.
  • Automated order orchestration and supported billing, commissioning and document-management tools (2014?2021).
SQL Oracle PL/SQL XML/XSLT/XQuery Clarify CRM v10 Windows Linux
upc cablecom GmbH
Zurich, Switzerland
7 Jahre 6 Monate
1996-03 - 2003-08

Designed and developed a Microsoft Access commissioning system

Programmer Analyst
Programmer Analyst
  • Developed rapid Internet prototypes and demos for telecommunications clients.
  • Designed and developed a Microsoft Access commissioning system for Sunrise GmbH.
  • Supported migration of the commissioning system to a new AMS product and contributed to Clarify CRM implementation.
various
9 Monate
1995-07 - 1996-03

Designed and implemented a company website

Freelance Web Designer
Freelance Web Designer
Designed and implemented a company website with database/webpage integration and real-time content updates.
Pronix GmbH
Stockstadt
10 Jahre 1 Monat
1984-07 - 1994-07

Internships

Developed software applications for sensor measurement and testing desks and contributed to process improvements.
Hottinger Baldwin Messtechnik
Darmstadt

Aus- und Weiterbildung

Aus- und Weiterbildung

1993 - 1995

MBA / MBI, Management Information Systems

Rotterdam School of Management, Erasmus University, Netherlands; exchange term University of Western Ontario, Canada


1984 - 1992

Master in Physics

Technische Universität Darmstadt


Certifications

  • Coursera Python for Everybody
  • Clarify CRM Certificate
  • Java for Programmers
  • HSK Level III
  • Cambridge CAE
  • Dutch language certificate

Position

Position

IT SOLUTIONS EXPERT

Kompetenzen

Kompetenzen

Top-Skills

PL/SQL Oracleentwicklung Datenbankdesign SQL Datenanalyse ChatGPT XSL Python Datenbankmigration Datenmigration Performance Analyse Telekommunikation CRM Billingprozess Order Fulfillment Applikationsbetreuung Applikationsüberwachung Linux Visual Basic HTML XML Migrationstool Webapplication

Schwerpunkte

ORACLE
DATABASE
MIGRATION

Produkte / Standards / Erfahrungen / Methoden

Profile

Senior IT Solutions Expert and Information Architect with nearly three decades of experience in software development, database-oriented application support, system migration and IT solution implementation. More than 20 years of practical SQL/PL/SQL and Oracle experience, combined with extensive telecommunications application expertise. Strong track record in data analysis, query optimization, database performance improvement, legacy-system migration and application support. Experienced with Oracle, MySQL and MS Access, with additional Python and Perl development experience. Daily professional use of English for 30 years.


CORE TECHNICAL EXPERTISE

Migration:

  • Legacy application and document-system migration 
  • Customer/product mass migrations 
  • Data/content analysis 
  • System transition support


Development: Python

  • Perl 
  • Java 
  • VB/VBA/VBScript 
  • PHP 
  • JavaScript 
  • HTML 
  • ML 
  • XSLT 
  • XQuery


Platforms & Tools:

  • UNIX/Linux 
  • Windows 
  • AWS 
  • Jira 
  • Confluence
  • Lotus Notes


Integration:

  • SOAP over HTTP 
  • REST 
  • Middleware platforms 
  • Service-oriented architecture

Datenbanken

Oracle
SQL
PL/SQL
Database Design
Data Analysis
Query Optimization
Database Performance

Branchen

Branchen

Telekommunikationsindustrie

  • Professionelle Erfahrung mit Nummernportierungsprozessen (Schweiz)
  • Mehr als 10 Jahre Erfahrung mit Anwendungen für die Nummernportierung

Einsatzorte

Einsatzorte

Zürich (+200km) Bern (+50km) Lausanne (+150km) Basel (+200km)
Deutschland, Schweiz, Österreich
möglich

Projekte

Projekte

3 Jahre 8 Monate
2022-11 - 2026-06

Migration of two legacy document management systems

Customer Relationship Application Specialist
Customer Relationship Application Specialist
  • Performed complete migration of two legacy document management systems to a new application.
  • Provided technical support for a document-generation application developed in Perl.
  • Executed mass customer product migrations using an internally developed mass-order handling tool.
  • Analysed data, optimized queries and improved database performance during migration projects.
  • Facilitated process continuity during critical IT system transitions.
Sunrise
Zurich, Switzerland
19 Jahre 2 Monate
2003-09 - 2022-10

Reviewed IT change requests

E2E Solution Expert SQL Oracle PL/SQL XML/XSLT/XQuery ...
E2E Solution Expert
  • Worked with SQL, Oracle PL/SQL, XML/XSLT/XQuery, Clarify CRM v10, Windows and Linux within service-oriented architecture environments.
  • Reviewed IT change requests, including document review and solution design.
  • Led implementation of a Java/MySQL ONP application (2003?2008), including vendor integration, operational support, defect research and reverse engineering.
  • Developed additional tools including error tracking and application front-ends.
  • Technical expert for document-management systems, including data-content analysis, testing and system migrations.
  • Technical expert for the successor ONP application (2008?2021).
  • Supported area-code migration, middleware configuration for order orchestration and mobile product-line implementation.
  • Automated order orchestration and supported billing, commissioning and document-management tools (2014?2021).
SQL Oracle PL/SQL XML/XSLT/XQuery Clarify CRM v10 Windows Linux
upc cablecom GmbH
Zurich, Switzerland
7 Jahre 6 Monate
1996-03 - 2003-08

Designed and developed a Microsoft Access commissioning system

Programmer Analyst
Programmer Analyst
  • Developed rapid Internet prototypes and demos for telecommunications clients.
  • Designed and developed a Microsoft Access commissioning system for Sunrise GmbH.
  • Supported migration of the commissioning system to a new AMS product and contributed to Clarify CRM implementation.
various
9 Monate
1995-07 - 1996-03

Designed and implemented a company website

Freelance Web Designer
Freelance Web Designer
Designed and implemented a company website with database/webpage integration and real-time content updates.
Pronix GmbH
Stockstadt
10 Jahre 1 Monat
1984-07 - 1994-07

Internships

Developed software applications for sensor measurement and testing desks and contributed to process improvements.
Hottinger Baldwin Messtechnik
Darmstadt

Aus- und Weiterbildung

Aus- und Weiterbildung

1993 - 1995

MBA / MBI, Management Information Systems

Rotterdam School of Management, Erasmus University, Netherlands; exchange term University of Western Ontario, Canada


1984 - 1992

Master in Physics

Technische Universität Darmstadt


Certifications

  • Coursera Python for Everybody
  • Clarify CRM Certificate
  • Java for Programmers
  • HSK Level III
  • Cambridge CAE
  • Dutch language certificate

Position

Position

IT SOLUTIONS EXPERT

Kompetenzen

Kompetenzen

Top-Skills

PL/SQL Oracleentwicklung Datenbankdesign SQL Datenanalyse ChatGPT XSL Python Datenbankmigration Datenmigration Performance Analyse Telekommunikation CRM Billingprozess Order Fulfillment Applikationsbetreuung Applikationsüberwachung Linux Visual Basic HTML XML Migrationstool Webapplication

Schwerpunkte

ORACLE
DATABASE
MIGRATION

Produkte / Standards / Erfahrungen / Methoden

Profile

Senior IT Solutions Expert and Information Architect with nearly three decades of experience in software development, database-oriented application support, system migration and IT solution implementation. More than 20 years of practical SQL/PL/SQL and Oracle experience, combined with extensive telecommunications application expertise. Strong track record in data analysis, query optimization, database performance improvement, legacy-system migration and application support. Experienced with Oracle, MySQL and MS Access, with additional Python and Perl development experience. Daily professional use of English for 30 years.


CORE TECHNICAL EXPERTISE

Migration:

  • Legacy application and document-system migration 
  • Customer/product mass migrations 
  • Data/content analysis 
  • System transition support


Development: Python

  • Perl 
  • Java 
  • VB/VBA/VBScript 
  • PHP 
  • JavaScript 
  • HTML 
  • ML 
  • XSLT 
  • XQuery


Platforms & Tools:

  • UNIX/Linux 
  • Windows 
  • AWS 
  • Jira 
  • Confluence
  • Lotus Notes


Integration:

  • SOAP over HTTP 
  • REST 
  • Middleware platforms 
  • Service-oriented architecture

Datenbanken

Oracle
SQL
PL/SQL
Database Design
Data Analysis
Query Optimization
Database Performance

Branchen

Branchen

Telekommunikationsindustrie

  • Professionelle Erfahrung mit Nummernportierungsprozessen (Schweiz)
  • Mehr als 10 Jahre Erfahrung mit Anwendungen für die Nummernportierung

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