Calvin Sierat

Calvin Sierat is an experienced professional in the ICT field, currently serving as a Werkplekbeheerder and Servicedesk en ICT Specialist at Samenwerkingsorganisatie Beroepsonderwijs Bedrijfsleven (SBB) since July 2017, where Calvin provides senior-level technical support and collaborates closely with various ICT departments. Prior to SBB, Calvin worked at Webhelp Nederland from 2011 to July 2017, fulfilling roles such as Incidentmanager, responsible for managing incident processes for 1KPN, and Expert agent, offering first-line support and incident management. Calvin’s career began at Teleperformance from 2008 to June 2011, where responsibilities included sales and training new agents, followed by a position at McDonald's as a Crewtrainer from 2007 to 2008. Calvin has pursued education in IT, earning an ITIL®4 FOUNDATION certification in March 2023, among other qualifications from various institutions.