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Tina Müller has extensive work experience in the field of Information Technology. Tina began their career as an Information Technology Analyst at Staffwise Plc from 1998 to 2000. Tina then joined Cisco in 2000, where they held various positions including Information Technology Analyst, Information Technology Project Manager, and Governance Lead. During their time at Cisco, Tina gained expertise in Six Sigma project management, process improvement, compliance implementation, and project governance. In 2020, they pursued a role as a Sprecherin/Voice Actress. In 2021, Tina joined SEC Consult Group as a Senior Security Consultant.

Tina Müller's education history includes a Master's certificate in Project Management from The George Washington University in 2007, an ITIL Service Management certification from Fox IT, UK in 2006, an Advanced English degree from the University of Cambridge in 1998, and an Abitur degree from Gymnasium Petrinum, Recklinghausen in 1997. In addition to their formal education, they also hold several certifications, including a Professional Scrum Master™ I (PSM I) certification from Scrum.org obtained in February 2022, a Berichte schreiben certification from LinkedIn obtained in June 2020, a Certified Six Sigma Black Belt certification from Six Sigma College Düsseldorf (SSCD) obtained in April 2019, a Six Sigma Green Belt Certification from Cisco obtained in August 2017, and a Six Sigma Yellow Belt Certification from Cisco obtained in September 2016. Tina also has a Cisco Security Ninja White Belt but no specific information regarding the month and year of obtaining it is provided.