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|Industry||Customer Experience, Customer service, Business process outsourcing|
|Founder||James F. Lynch|
|Headquarters||Miami, FLorida, United States|
Number of locations
|Laurent Uberti (President, CEO & COB)|
|Services||Customer Experience Management Solutions|
Number of employees
|Parent||Acticall Sitel Group|
Sitel is a company of Acticall Sitel Group and collaborates with some of the best-known global brands to help consistently deliver outstanding customer experiences. Headquartered in Miami, Florida, Sitel is one of the world’s leading outsourcing providers of customer experience management. With over 30 years of industry-leading experience, Sitel’s 75,100 associates support more than 400 clients in 48 languages from 146 facilities strategically located in 22 countries. 
The original SITEL (Systems International TELemarketing) was founded in 1985 by James F. Lynch, as a result of his purchase of HQ800, an answering service company owned by United Technologies. In June 1985, SITEL became the first publicly traded, independent teleservices company and was listed on the NASDAQ through an initial public offering (IPO). Six months later, they moved from NASDAQ to the NYSE as 'SWW'. On January 30, 2007, ClientLogic Corporation announced its acquisition of SITEL Corporation. The combined company would now be called Sitel (now in lowercase letters). and its headquarters moved to ClientLogic's headquarters in Nashville.
On 21 September 2015, Sitel announced it had been acquired by Groupe Acticall. On 9 March 2017, one year and a half after the acquisition, the newly created Acticall – Sitel Group announced it successfully combined both DNA’s: Sitel’s 30 years of experience, global platform and unrivaled client base and Acticall’s entrepreneurial success and digital vision.  Acticall Sitel Group and Sitel's headquarters were then moved to Miami, Florida.
Acticall Sitel Group combines comprehensive customer care capabilities and unparalleled digital, training and technology expertise across industries. With subsidiaries such as Sitel, The Social Client, Learning Tribes, Extens Consulting and Novagile, Acticall Sitel Group can be leveraged across geographies, verticals and all stages of the end-to-end customer journey, helping clients effectively harness the industry’s explosive digital transformation.
- "Overview". Sitel. Retrieved 5 July 2015.
- "Groupe Acticall Completes Acquisition of Sitel Worldwide". Sitel. Retrieved 21 September 2015.
- "Groupe Acticall Completes Acquisition of Sitel Worldwide". Sitel. Retrieved 20 March 2016.
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