Get to know the friendly faces and brilliant minds that keep our company running every day. No day is ever the same at Heatload, and our specialised professionals are here to make the company run efficiently and professionally.
Dave Wolfenden is a seasoned technologist and Programme Director turned entrepreneur, whose more than 40-year career spans the high-stakes world of data centre design, construction, and testing. From IT Operations and Technical Sales to overseeing multi-million-pound infrastructure builds—including major UK retail bank and insurance data centres—Dave has thrived in complex, fast-paced environments across countless market sectors.
Since 2002, he’s shifted gears from corporate life to running Mafi Mushkila Ltd, also known as HeatLoad—the UK’s largest dedicated heat load testing provider, currently boasting more than 100MW of capacity. Under his leadership, the company continues to push boundaries, developing innovative products and services that serve mission-critical clients across the country.
Armed with a wealth of hands-on experience rather than a wall of academic accolades, Dave brings practical wisdom, fierce curiosity, and a no-nonsense attitude to everything he does. He’s proof that grit, adaptability, and a touch of irreverence can take you farther than any acronym ever could.
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Hayley Chatterton
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Hayley Chatterton2025-10-07 16:54:302025-10-21 16:23:31Dave Wolfenden joins the Cooling Data Center Podcast
As the Sales Director of Mafi Mushkila Ltd (trading as HeatLoad), Glen holds a crucial role in steering revenue growth and formulating internal sales strategies. Being part of a family-owned enterprise, his duties extend beyond the conventional scope of a Sales Director (encompassing financial management, HR, logistics, product development, project management and overseeing the general management of the estate).
Glen has spent his entire adult career within the business, gaining experience across nearly every operational and commercial role. This broad exposure has given him a deep understanding of the organisation and its services, while also providing a strong foundation for building meaningful client relationships and expanding his professional network.
In the early 2000s, Mafi Mushkila Ltd was primarily engaged in server migration projects. During this time, he supported the business on a part-time basis while pursuing his studies in IT at college, gaining early exposure to operational processes within the Data Centre services sector.
In 2009, Glen joined the company on a full-time basis as a HeatLoad Operative. Over the following years, he progressed into a supervisory position, with core responsibilities that included leading small teams during site installations/decommissions, conducting detailed site surveys, liaising with clients to coordinate project logistics, and ensuring seamless on-site delivery with minimal disruption to client operations.
In late 2016, Glen transitioned into a strategic office-based position as the company’s first Business Development Manager, taking ownership of sales and marketing functions. Over a six-year period, he focused on expanding the company’s client portfolio and increasing revenue through targeted commercial development. This trajectory led to his appointment as Sales Director, where he now lead the organisation’s sales strategy, client engagement, and commercial growth initiatives.
Looking to the future, Glen‘s ambition is to strategically scale the business by prioritising the development of our workforce, enhancing Heatload’s product and service offerings, optimising warehouse infrastructure and driving innovation in alignment with emerging industry technologies, such as liquid cooling.
At the same time, Heatload remains committed to our core mission: delivering the exceptional quality and client-focused services that have defined the company from the outset. After all, Heatload’s company motto is: “Data Centre Testing? No problem!”
Hayley Chatterton is the Marketing Manager at HeatLoad, where she specialises in communicating advanced commissioning practices and test-methodology for data centres.
With more than six years of marketing experience, Hayley works closely with Sales, Operations Management, commissioning engineers, and hyperscale clients. She helps facilitate collaboration between HeatLoad and client teams by arranging meetings, coordinating joint work, and supporting productive engagement with procurement and operations stakeholders.
She combines technical marketing expertise with hands-on project insight to produce content, campaigns, and communications that resonate with data-centre operators and procurement teams.
Outside the office, Hayley enjoys exploring emerging cooling technologies and is an active participant in industry networks. Connect with her on LinkedIn for updates on testing best practice, innovation, and event appearances.
Owen‘s professional career in the Data Centre industry began at Heatload, where he is a key representative for the sales team. He is responsible for managing key client accounts, building long-term relationships, and driving business growth across the UK and Europe. Since stepping into the role in late 2022 as the first dedicated member of the sales team outside of the company family, Owen has worked closely with the Sales Director to expand the client portfolio and strengthen Heatload’s position in the Data Centre commissioning space.
Owen began his career at Heatload in 2021 as an Operative, working on sites across the UK and internationally. That experience gave him technical knowledge of the company’s specialist rental equipment and a solid understanding of the Data Centre environment. Over time, he has progressed into a supervisory position, leading site teams through installations and removals, and overseeing project delivery on the ground.
This foundation has been a huge asset in Owen’s sales career. It allows him to provide clients with practical, informed support on their projects, ensuring solutions are aligned with their technical and logistical needs. Heatload is not just selling a service—the sales team understands the intricacies of what Heatload delivers and how it impacts the clients’ operations.
Being part of a family-run business, Owen‘s role extends beyond sales. He is actively involved in logistics, project coordination and operational planning, giving him a well-rounded view of how to drive value for Heatload’s customers at every stage.
Looking ahead, Owen‘s goal is to continue scaling the sales team, forging strategic partnerships, and driving sustainable growth for the business. He is passionate about delivering real value to Heatload’s clients, expanding outreach to new and existing markets, and helping shape the future of Heatload as a trusted partner in the Data Centre industry.
Tommy joined Heatload in 2017 as an Operative and has steadily built a wealth of experience in both the operational and logistical aspects of our projects—whether on-site or in our warehouse. Over the years, he progressed to the role of Site and Warehouse Supervisor, where he led teams through installations and removals, and managed project preparations at our headquarters.
His proven leadership, hands-on expertise, and deep understanding of our processes have naturally led him to his current role as Operations Team Leader.
In this position, Tommy is responsible for arranging logistics, coordinating operatives, and ensuring every project is delivered efficiently and seamlessly from start to finish.
Richard joined Heatload in June 2025 as Operations Manager for the company’s new site in Arundel, West Sussex, bringing with him extensive experience from a career in production engineering, including 15 years running his own business.
In his role, Richard oversees the day-to-day operations of the Arundel site, managing staff and coordinating logistics in line with Heatload’s values. With no two days the same, he thrives on the variety, challenges, and opportunities the role presents, working closely with the rest of the Heatload team to ensure smooth and efficient operations.
Richard’s diverse background gives him a unique perspective in tackling new challenges. Career highlights include being named Xerox Engineer of the Year and successfully building and managing his own company.
Connie joined HeatLoad in March 2025, bringing a background in event management and a strong passion for health and safety. Over the years, she has gained extensive experience making sure the businesses she’s worked for stay fully compliant with regulations—carrying out risk assessments, implementing policies, and ensuring they’re actually followed in day-to-day operations.
At HeatLoad, Connie is responsible for keeping health and safety policies up to date, organising the right training for the Operatives so they can be at their best on and off site, and making sure the business holds the correct certifications to operate safely and legally. Connie is currently preparing to take her NEBOSH National General Certificate in Occupational Health and Safety this September, which plays a key step in her growth as a Health and Safety Officer.
So far, her biggest career highlights include helping the company achieve ISO certification and being part of HeatFest—a memorable milestone for the entire team.
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