I am an experienced IT Solutions Expert with extensive knowledge of IT systems design and implementation. I have nearly three decades of experience in the telecommunications industry and a strong focus on delivering innovative solutions. My career has allowed me to work on various projects, enhancing customer satisfaction and driving efficiency gains in complex environments. I thrive in collaborative settings and enjoy utilizing my technical skills to create impactful solutions.

Stefan Porstein

I am an experienced IT Solutions Expert with extensive knowledge of IT systems design and implementation. I have nearly three decades of experience in the telecommunications industry and a strong focus on delivering innovative solutions. My career has allowed me to work on various projects, enhancing customer satisfaction and driving efficiency gains in complex environments. I thrive in collaborative settings and enjoy utilizing my technical skills to create impactful solutions.

Available to hire

I am an experienced IT Solutions Expert with extensive knowledge of IT systems design and implementation. I have nearly three decades of experience in the telecommunications industry and a strong focus on delivering innovative solutions. My career has allowed me to work on various projects, enhancing customer satisfaction and driving efficiency gains in complex environments. I thrive in collaborative settings and enjoy utilizing my technical skills to create impactful solutions.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
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Language

English
Fluent
Chinese
Intermediate
Dutch
Intermediate
French
Beginner

Work Experience

Software Application Specialist at Sunrise
September 1, 2003 - Present
Refactored and supported software application for customer product mass orders. Completed migration of two legacy document systems to successor application. Supported document management systems for over 10 years.
IT Consultant at American Management Systems (AMS)
March 1, 1996 - September 1, 2003
Built relationships with Swiss clients as IT consultant on-site. Designed, developed, and implemented commissioning system for the same client.
Customer Relationship Application Specialist at Sunrise
November 1, 2022 - Present
Performed migration of legacy document management systems to new applications and provided technical support. Optimized database performance and facilitated smooth transitions during critical IT projects.
E2E Solution Expert Telecommunications at upc cablecom GmbH
September 1, 2003 - October 1, 2022
Leveraged expertise in various technologies to deliver effective solutions, supported IT change requests, and led migration projects ensuring successful integration into company infrastructure.
Freelance Web Designer at Pronix GmbH
July 1, 1995 - March 1, 1996
Designed and implemented a website for an electronics trading company, ensuring operational efficiency and real-time updates.

Education

MBA at Rotterdam School of Management, Erasmus University
September 1, 1993 - June 1, 1995
MSc Physics at Technische Universität Darmstadt
October 1, 1984 - September 1, 1992
MBA at Rotterdam School of Management, Erasmus University
September 1, 1993 - June 1, 1995
Master in Physics at Technische Universität Darmstadt
October 1, 1984 - September 1, 1992

Qualifications

Python Courses
January 1, 2023 - February 6, 2026
Coursera Python Courses
January 1, 2023 - February 6, 2026
Clarify CRM Certificate
January 1, 1999 - February 6, 2026
Java for Programmers
January 1, 1996 - February 6, 2026

Industry Experience

Telecommunications, Software & Internet