As the Founder and President of THM Luminary HR Strategies, Tiffany Mack is a respected HR strategist, executive advisor, and builder of high-impact people ecosystems.
A former Fortune 100 Director and trusted partner to C-suite leaders, Tiffany Mack brings deep expertise across in-house HR and consulting spanning about 15 years. With a career spanning top firms like Deloitte, Booz Allen Hamilton, Ernst & Young, and executive roles in global enterprises, Tiffany has designed and delivered scalable strategies that now serve as the gold standard for talent, culture, and organizational effectiveness across billion-dollar businesses and government agencies.
Known for transforming human capital into measurable business outcomes, Tiffany specializes in advising on and developing solutions for organizational transformation, workforce transformation, and change management through aligning business strategy, leadership, culture, performance, and HR operations for organizations. Results include higher employee retention, accelerated upskilling, lasting cultural change, and enduring future of work implementations.
Tiffany brings a distinctive skill set that integrates deep HR expertise with financial fluency, having advised senior leaders, major banks, asset management companies, and private equity firms on structured financial strategies. Tiffany’s HR strategies benefit by her financial expertise, enabling her to design people solutions that are not only strategic and scalable but also fiscally responsible and aligned with business outcomes.
Tiffany has successfully coached rising leaders, seasoned leaders, and executives, helping them manage complex environments during uncertain times, elevate their impact, accelerate growth, lead with greater clarity and confidence, navigate career transitions, and grow into roles of greater complexity and influence. Many have gone on to take on expanded roles, lead transformational initiatives, and build high-performing, purpose-driven teams.
Tiffany holds an executive education diploma from The Wharton School, graduate certificates in strategy and performance management from Georgetown University McDonough School of business, Bachelor of Science in Human Resource Management and Finance from Rutgers Business School, and certifications, degrees in change management (PROSCI), project management (PMP), and agile leadership (CSM). Tiffany also completed Google's Artificial Intelligence Bootcamp and General Assembly's Artificial Intelligence, Machine Learning, and Data Science Bootcamp.
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