Executive Leadership



CEO & Founder
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    For the past two decades, Calum has dedicated his professional life to starting and growing innovative software and e-commerce startups. After being entrenched in the world of data analytics for years and seeing firsthand how data can transform an industry, Calum founded TVSquared in 2012 to bring state-of-the-art analytical capabilities to TV advertising.

    Calum is recognized for building outstanding global teams; in fact, many of his employees have been with him for more than 10 years. He thrives on taking a company from idea to exit and is regularly tapped by journalists, analysts and event organizers to discuss his unique management strategies and his fervent belief that data-driven decisions need to be at the cornerstone of every business.

    Before TVSquared, Calum was the CEO of Sumerian, a provider of big data analytics for retail and investment banks. He was also the co-founder and CTO of Orbital Software, which was listed on the London Stock Exchange and merged with Sopheon PLC in 2001.

    Outside of work, Calum is an avid outdoorsman, who can frequently be found all over the world kite surfing, snowboarding and sailing.



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    Jo is President of TVSquared, the global leader in TV attribution. At TVSquared, Jo’s focus is on leading the company’s commercial portfolio, including client relations and strategic partnerships across the entire media ecosystem – from brands and agencies to networks and publishers. A creative and passionate leader, Jo is driving TVSquared’s leading position in linear and digital TV measurement and helping to shape the future of TV advertising by bringing transparency and proof of performance to the forefront. As a founding team member, Jo has scaled large enterprise customers and empowered thousands of advertisers to leverage TVSquared’s cross-screen, multi-touch attribution platform.

    Jo is a 20-year software veteran with a proven track record of bringing to market innovative products and services across the adtech and fintech industries. Prior to TVSquared, Jo held various executive positions to help companies achieve their full potential, always putting the client first and building products that support industry needs and drive maximum shareholder value.

    Jo builds teams of extraordinary talent, champions diversity and is recognized as a thought leader and voice of the industry.

    A UK expat, when Jo is not working, she is mom to her 10-year old daughter and training for her next triathlon (she completed the IronMan in 2014!).



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    An expert in information design, analytics and SaaS product scaling, Blair has conceived, built and scaled disruptive products across multiple industries, including MarTech (MMM, MTA, optimization), FinTech (capital markets, FX, low-latency trading) and Enterprise DevOps.

    For more than 15 years, he has helped the world’s most demanding companies improve their decision-making through the simplification of advanced analytics. Throughout his career, Blair has focused on making complex concepts easy to understand, and has a reputation for designing products that are highly visual and intuitive.

    Prior to TVSquared, Blair ran a technical consultancy and was Principal Analyst at data specialist Sumerian, where he led analytic engagements with dozens of the world’s largest companies. Before Sumerian, Blair was a consultant at Accenture, where he worked on technology transformation projects in the financial services sector. He holds degrees in Artificial Intelligence and Computer Science from Aberdeen University.


Jamie Lemle

Chief Marketing Officer
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    As CMO of TVSquared, Jamie oversees all areas of the company’s marketing – from brand and company positioning, to content, PR, product marketing and demand generation. She has a strong track record of bringing disruptive technology to market, leading strategic initiatives for high-growth companies focused on building technology solutions for the media industry.

    Prior to TVSquared, Jamie spent seven years leading marketing strategy for Magnetic (acquired by Deloitte and AcuityAds). She also held senior marketing positions at Turn (acquired by Amobee) and MediaMind (acquired by Sizmek). Earlier in her career, Jamie led public relations for B2B and B2C companies across media/adtech, clean technology, education and nonprofits. Throughout her career, Jamie has remained closely connected to the evolution of digital and TV advertising, from working with one of the adtech industry’s first real-time buying (RTB) platforms, to being at the center of data-driven advertising in the new video ecosystem.

    In addition to her passion for marketing, Jamie enjoys golf and being a mom to her two children.


Bob Ivins

Chief Strategy Officer
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    As CSO of TVSquared, Bob works to ensure advertisers can measure the impact of TV on business outcomes and reach the right audiences at the right frequency. A three-decade industry veteran, Bob is widely recognized for pioneering data-driven advertising and promoting better transparency and collaboration throughout the TV ecosystem.

    Bob joined TVSquared from Ampersand, where he was Chief Data Officer, leading the development of its advanced TV and media offerings. He has held executive-level roles at Mindshare, serving as the agency’s first Chief Data Officer; Comcast, where he developed its Audience Interconnect Database; and Comscore, where he ran European operations.

    He has also held senior roles at Nielsen, Yahoo and I/Pro, the first mover in web measurement, where he developed early tools to measure the effectiveness of online advertising.



Head of Business Intelligence
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    A recognized thought leader in data analytics and modeling, Hew leads TVSquared’s technology development and roadmap. Hew has spent the majority of his career finding new and innovative ways of making data analytics transformative for businesses that span industries.

    As principal analyst and head of IT analytics at Sumerian, a provider of big data analytics for retail and investment banks, Hew was responsible for optimization modeling and analysis for big-name financial clients across the globe. He was also the CTO and head of IT analytics for Registers of Scotland, a department within the Scottish government that maintains records related to land, property and other legal documents.

    Outside of work, Hew’s household is busy with three teenage boys with interests as diverse as climbing, rugby, tennis, archery, Chinese and five musical instruments between them.


Mike Mason

Chief Commercial Officer
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    Mike has worked in the technology and media industries for more than 20 years, ensuring that brilliant ideas and innovative solutions realize their full commercial potential.

    Experienced in planning the route required to move startups to large, multinational organizations, Mike understands the operational and sales challenges that come from rapidly scaling an organization. This is a journey he relishes and has successfully completed several times.

    As COO of Digitas LBi, he developed a great understanding of the agency landscape, and the sectors need to work with partners who can help an agency create value for their clients and drive an ever-improving ROI.

    In his spare time, you’ll most likely find Mike on a bike – of one sort or another – trying, desperately, to keep up with his kids.


Tom Duke

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    For two decades, Tom has worked with fast-growing companies to design and develop products that meet and exceed the needs of rapidly evolving industries.

    As CIO, Tom leads TVSquared’s technical strategy and roadmap. He manages an EMEA and U.S.-based team to ensure the TVSquared vision becomes a reality – building the most innovative products for measuring and optimizing TV.

    Prior to TVSquared, Tom was the operations director at Brandwatch and CTO at iBAHN, where he managed a global team to provide market-leading network and video products to the hospitality industry. He has also held senior-level positions at Memex, Orbital Software and Vision Consulting.

    Outside of work, Tom is an avid rower and recently won two gold medals at the 2016 Henley Masters Regatta.

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