Chief Strategist
Otr Events
AeroLeads people directory · profile
Mark Callender Email & Phone Number
Chief Strategist
at
OTR Events
2 work emails found
@gsma.com
4 phones found area 207 and 440
LinkedIn matched
✓ Verified May 2026
4 data sources
Profile completeness 100%
Current company
Role
Chief Strategist
Location
United Kingdom, United Kingdom, United Kingdom
Company size
Who is Mark Callender? Overview
A concise factual answer block for searchers comparing this professional profile.
Quick answer
Mark Callender is listed as Chief Strategist at OTR Events, a company with 93 employees, based in United Kingdom, United Kingdom, United Kingdom. AeroLeads shows a work email signal at gsma.com, phone signal with area code 207, 440, and a matched LinkedIn profile for Mark Callender.
Mark Callender previously worked as VP, Show Content USA & EU at Money20/20 and Director, Conference at Gsma. Mark Callender holds Ma from Kingston University.
Company email context
Email format at OTR Events
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{first}.{last}@gsma.com
89% confidence
AeroLeads found 2 current-domain work email signals for Mark Callender. Compare company email patterns before reaching out.
Profile bio
About Mark Callender
Experienced marketing and communications professional with 15+ years experience in the mobile and events industry. Strong expertise in technology trends, mobile telecoms, market research, event management, content and strategy.
Listed skills include Mobile Devices, Management, Strategy, Telecommunications, and 28 others.
Current workplace
Mark Callender's current company
Company context helps verify the profile and gives searchers a useful next step.
Otr Events
11 roles
Mark Callender work experience
A career timeline built from the work history available for this profile.
Vp, Show Content Usa & Eu
Current
Jul 2024 - Present
Director, Conference
Director of Conference for MWC Barcelona, Shanghai, Las Vegas and the Mobile 360 Series
May 2021 - Jul 2024
Senior Manager, Conference & Marketing
Head of Content for MWC Barcelona & Shanghai, Ministerial Programme and the recently announced MWC Africa. Marketing lead for all GSMA events in CEMEA (Central Europe, Middle East and Africa) region
Aug 2020 - May 2021
Senior Research Manager
Work on MWC Barcelona keynote programme and Head of Content for the Ministerial Programme, bringing together ministers, telecom regulators, data protection authorities, international organisations to engage with mobile industry experts on policy and regulatory topics.
May 2018 - Aug 2020
Research Manager
Nov 2015 - May 2018
Head Of Conference Production
Informa Telecoms & Media
Aug 2011 - Nov 2015
Conference Manager - Vsat
Informa Telecoms & Media
Dec 2013 - Jul 2015
Senior Conference Researcher - Networks And Infrastructure
Informa Telecoms & Media
Service Management Portfolio; Broadband Traffic Management, Policy Control, Big Data, Network Security, Mobile Identity, Network IntelligenceWireless Access Portfolio: Self Organising Networks, Cloud-RAN
Aug 2011 - Dec 2013
Conference Producer
Dec 2010 - Aug 2011
Conference Producer
Produced a portfolio of conferences for Health Service Journal and the Nursing Times; the UK’s leading source of news and information on health management
Dec 2009 - Nov 2010
Team & coworkers
Colleagues at OTR Events
Other employees you can reach at money2020.com. View company contacts for 93 employees →
RD
Rumi Deka
Colleague at Otr Events
Guwahati, Assam, India, India
View →
JS
Jagdeep Singh
Colleague at Otr Events
Mumbai, Maharashtra, India, India
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BL
Boy Loy
Colleague at Otr Events
Phnom Penh, Phnom Penh, Cambodia, Cambodia
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AD
Alves Davido
Colleague at Otr Events
Liège, Walloon Region, Belgium, Belgium
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SS
Sk Silu
Colleague at Otr Events
Kakatpur, Odisha, India, India
View →
SL
Stephen Lechner
Colleague at Otr Events
New York, New York, United States, United States
View →
BA
Bethany Andrews
Colleague at Otr Events
Barnet, England, United Kingdom, United Kingdom
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DB
Dheneez Battung
Colleague at Otr Events
Stevenage, England, United Kingdom, United Kingdom
View →
AZ
A Z
Colleague at Otr Events
Sofia, Sofia City, Bulgaria, Bulgaria
View →
AA
Albert Ayala
Colleague at Otr Events
Clinton Township, Michigan, United States, United States
View →
Rumi Deka
Colleague at Otr Events
Guwahati, Assam, India, India
View →
JS
Jagdeep Singh
Colleague at Otr Events
Mumbai, Maharashtra, India, India
View →
BL
Boy Loy
Colleague at Otr Events
Phnom Penh, Phnom Penh, Cambodia, Cambodia
View →
AD
Alves Davido
Colleague at Otr Events
Liège, Walloon Region, Belgium, Belgium
View →
SS
Sk Silu
Colleague at Otr Events
Kakatpur, Odisha, India, India
View →
SL
Stephen Lechner
Colleague at Otr Events
New York, New York, United States, United States
View →
BA
Bethany Andrews
Colleague at Otr Events
Barnet, England, United Kingdom, United Kingdom
View →
DB
Dheneez Battung
Colleague at Otr Events
Stevenage, England, United Kingdom, United Kingdom
View →
AZ
A Z
Colleague at Otr Events
Sofia, Sofia City, Bulgaria, Bulgaria
View →
AA
Albert Ayala
Colleague at Otr Events
Clinton Township, Michigan, United States, United States
View →
3 education records
Mark Callender education
FAQ
Frequently asked questions about Mark Callender
Quick answers generated from the profile data available on this page.
What company does Mark Callender work for?
Mark Callender works for OTR Events.
What is Mark Callender's role at OTR Events?
Mark Callender is listed as Chief Strategist at OTR Events.
What is Mark Callender's email address?
AeroLeads has found 2 work email signals at @gsma.com for Mark Callender at OTR Events.
What is Mark Callender's phone number?
AeroLeads has found 4 phone signal(s) with area code 207, 440 for Mark Callender at OTR Events.
Where is Mark Callender based?
Mark Callender is based in United Kingdom, United Kingdom, United Kingdom while working with OTR Events.
What companies has Mark Callender worked for?
Mark Callender has worked for Otr Events, Money20/20, Gsma, Informa Telecoms & Media, and Smi Group.
Who are Mark Callender's colleagues at OTR Events?
Mark Callender's colleagues at OTR Events include Rumi Deka, Jagdeep Singh, Boy Loy, Alves Davido, and Sk Silu.
How can I contact Mark Callender?
You can use AeroLeads to view verified contact signals for Mark Callender at OTR Events, including work email, phone, and LinkedIn data when available.
What schools did Mark Callender attend?
Mark Callender holds Ma from Kingston University.
What skills is Mark Callender known for?
Mark Callender is listed with skills including Mobile Devices, Management, Strategy, Telecommunications, Market Research, Business Development, Marketing Strategy, and Strategic Partnerships.
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