Mark Callender
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Mark Callender Email & Phone Number

Chief Strategist at OTR Events
Location: United Kingdom, United Kingdom, United Kingdom 11 work roles 3 schools
2 work emails found @gsma.com 4 phones found area 207 and 440 LinkedIn matched
✓ Verified May 2026 4 data sources Profile completeness 100%

Contact Signals · 2 work emails · 4 phones

Work email m****@gsma.com
Direct phone (207) ***-****
LinkedIn Profile matched
3 free lookups remaining · No credit card
Current company
Role
Chief Strategist
Location
United Kingdom, United Kingdom, United Kingdom
Company size

Who is Mark Callender? Overview

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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
Otr Events
Chief Strategist
United Kingdom
Website
Employees
93
AeroLeads page
11 roles

Mark Callender work experience

A career timeline built from the work history available for this profile.

Chief Strategist

Otr Events

United Kingdom

Vp, Show Content Usa & Eu

Current

London Area, United Kingdom

Jul 2024 - Present

Director, Conference

London, England, United Kingdom

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

London, United Kingdom

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

London

Aug 2011 - Nov 2015

Conference Manager - Vsat

Informa Telecoms & Media

London, United Kingdom

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 →

3 education records

Mark Callender education

Education record

Caterham School
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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