Callum Stewart
@callumstewart
Marketing leader driving subscriber growth, engagement and retention across media, streaming and sport.
What I'm looking for
I am a results-driven marketing leader with over a decade of experience in media, streaming and sport, known for growing subscribers, reducing churn and delivering multimillion-pound revenue through acquisition, engagement and retention strategies. I build and lead high-performing teams, create data-driven frameworks, and manage complex stakeholder relationships across content, talent and commercial partners.
Highlights include growing a streaming service from 17,000 to 85,000+ subscribers, delivering major global streamed events, launching apps and campaigns that drove significant user growth, and consistently meeting financial KPIs. I am passionate about mentoring, access, and developing long-term strategies that scale brands and maximise lifetime value.
Experience
Work history, roles, and key accomplishments
Head of Marketing
National Theatre
Oct 2023 - Present (2 years 3 months)
Built and lead the NT at Home marketing team, increasing subscribers 382% to 85,000 and reducing churn from 13.9% to 6.8% within six months while improving minutes watched and US base growth.
Content & Marketing Lead
Audible
Feb 2022 - Oct 2023 (1 year 8 months)
Led content marketing for Audible's tier1/2 titles, driving chart-topping podcast and audiobook launches and managing multimillion-pound partnerships with Acast, Twitch and PodBible.
SVOD & Brand Manager
A+E Networks
Mar 2021 - Feb 2022 (11 months)
Managed SVOD campaigns across FAST channels, growing subscribers YoY (36% on CI Play, 70% on History Play) and generating £3m through sign-up marketing while reducing CPSU from £20 to £3.68.
Head of Marketing
Boxxer
Oct 2020 - Mar 2021 (5 months)
Built foundational marketing processes and user journeys during COVID, defined target audiences within boxing and entertainment, and established community growth strategies.
Head of Marketing, Sport
News UK
Jan 2020 - Oct 2020 (9 months)
Managed sports marketing across six brands, driving £159k revenue and 125,025 entries in a promotional campaign while maximising digital listening and ad revenue KPIs.
UK Marketing Lead
Livi
Jan 2019 - Oct 2019 (9 months)
Led UK marketing for a DTC healthcare start-up, delivering campaigns that grew the UK subscriber base 534% YoY during the launch period.
Senior Marketing Manager
Discovery Communications
Oct 2017 - Jan 2019 (1 year 3 months)
Ran ATL and digital campaigns including Katie Price series and grew TLC YouTube from 300k to 1.7M subscribers, delivering $1.3M in ad revenue and launching Discovery Kids app in Singapore to #2.
Owned rugby Autumn Internationals campaign delivering 10,000+ Sky Sports upgrades and 12M+ digital impressions; led cross-channel engagement strategy with strong email performance.
Owned end-to-end marketing campaigns including The Apprentice (7.3M viewers, +20% YOY) and Peter Kay's Car Share, achieving record iPlayer and linear launch audiences.
Marketing Assistant
UKTV
Nov 2012 - Sep 2014 (1 year 10 months)
Managed end-to-end on-air promos for the lifestyle department, supporting channel content briefs and promotional activity.
Education
Degrees, certifications, and relevant coursework
University of Strathclyde
Master of Science, Marketing
2011 - 2012
Grade: Merit/Pass
Completed an MSc in Marketing, focusing on advanced marketing strategy and analytics, awarded with Merit/Pass.
Glasgow Caledonian University
Bachelor of Arts (Honours), International Product Design
2006 - 2010
Grade: 2:1
Completed a Bachelor of Arts (Honours) in International Product Design, achieving a 2:1 classification.
Tech stack
Software and tools used professionally
Availability
Location
Authorized to work in
Social media
Job categories
Interested in hiring Callum?
You can contact Callum and 90k+ other talented remote workers on Himalayas.
Message CallumFind your dream job
Sign up now and join over 100,000 remote workers who receive personalized job alerts, curated job matches, and more for free!
