Profile

Mackenzie Marceau, MA, LMFT-Associate, specializes in operations, stakeholder engagement, and creating impactful experiences. Whether collaborating with high-profile public figures or senior executives, Mackenzie thrives at the intersection of business, entertainment, and psychology, helping CXOs drive their businesses forward. Known for her empathy, strong work ethic, and resourcefulness, Mackenzie is a natural leader and a reliable team player.

A Los Angeles native, she now calls San Rafael, CA home, where she enjoys hiking in the redwoods with her family. Passionate about promoting well-being, Mackenzie volunteers at mental health clinics as well as teaches Pilates, helping others optimize their health and balance.

Experience

  • Founders Fund is a leading venture capital firm with approximately $12 billion under management.

    • Managed Pathfinder community of over 50 early-stage portfolio companies across six funds.

    • Collaborated with the investment team to prioritize and optimize high-impact initiatives.

    • Maintained and grew strategic relationships with Fortune 500 companies and the entertainment industry.

    • Launched and led the annual ‘Pathfinder’ invite-only unconference, gathering C-level participants, researchers, and investors.

    • Produced 20+ portfolio events annually, including salon conversations, panels, and parties.

    • Handled administrative tasks for General Partner Brian Singerman and Partner Sean Liu.

  • Reaction, Inc. designs and manufactures innovative disaster response shelters.

    • Communicated directly and on behalf of the CEO with board members, investors, executives, and press.

    • Optimized CEO’s time and efficiency as the primary gatekeeper.

    • Conducted character interviews for new hires across all departments.

    • Managed logistical aspects of the CEO’s office, including calendar management and travel coordination.

    • Developed and maintained strategic relationships across entertainment, workforce, and disaster verticals.

    • Created and implemented marketing strategies, including product launches, events, social media, partnerships, and branding.

    • Tracked and analyzed key metrics, including KPIs, Google Analytics, and AdWords.

    • Served as the primary point of contact for press, media, and speaking engagements.

    • Produced content, including visual storytelling from concept to production.

  • TEDx is part of TED , a nonprofit devoted to ‘ideas worth spreading.’

    • Curator and coordinator of speaker nominations for TEDx Austin

    • Curated and coordinated speaker nominations for TEDx Austin.

    • Managed all speaker relations and communications.

    • Coordinated contract negotiations, speech preparation, travel, and event logistics.

  • Carousel Productions, founded by Steve Carell, develops feature films for Warner Bros. Pictures.

    • Facilitated film development for President Steve Carell and executive team.

    • Assisted executive producers of "Crazy Stupid Love" for Warner Bros. Pictures.

    • Oversaw talent and interviews for the comedy documentary series “Inside Comedy” for Showtime.

    • Collaborated with writers and analyzed pitches.

    • Managed administrative tasks and a team of interns.

  • WME is the world’s largest talent agency, representing top artists and consumer brands.

    • Supported a founding partner with executive and administrative tasks during high-profile merger and acquisition negotiations.

    • Coordinated executive outreach, managing relationships with board members, senior executives, and clients.

    • Managed logistics for 100 A-list clients, including Tina Fey, Ricky Gervais, and Seth MacFarlane, ensuring seamless service delivery.

Education

    • Bachelor's Degree in Business Administration with an Entrepreneurship & Cinema-Television Concentration

    • Master's Degree in Psychology

    • Expertise in adult individual and relationship counseling that fuses developmental neuroscience, attachment theory, and arousal regulation to help with challenging relational issues.

    • Licensed as an LMFT - Associate

DOWNLOAD PDF

Kind Words

  • Mackenzie Marceau was an essential part of my team, consistently demonstrating resourcefulness and grit in one of the most demanding environments in the industry. Her intuitive ability to read between the lines was key in navigating complex, high-stakes situations with A-list talent and senior executives, ensuring everything ran seamlessly. Beyond her problem-solving skills, Mackenzie excelled at building strong relationships and maintaining confidentiality, quickly becoming a trusted and invaluable asset. I would jump at the chance to work with her again.

    Richard Weitz, Co-Chairman at William Morris Endeavor (WME)

  • Mackenzie consistently took the initiative to support the broader team, whether in organizing conferences or planning large-scale events. Her proactive approach and eagerness to step beyond her primary responsibilities not only showcased her leadership but also made her an invaluable asset to the company.

    What truly sets Mackenzie apart is her ability to deliver exactly what is needed, exactly how it is needed, without error. She has a rare talent for understanding not just the “what” but also the “how,” ensuring that every task is completed to the highest standard. This combination of strategic insight and flawless execution makes her exceptionally well-suited for elevated roles, including that of Chief of Staff. Mackenzie's ability to navigate complex situations and provide unwavering support at an executive level positions her perfectly for any leadership role she may pursue in the future.

    Brian Singerman, General Partner at Founders Fund (via letter)

  • [Mackenzie] is the type of individual who implicitly "gets it," someone who deduces the correct answer with little context, saving her executives time in her ability to obtain the right result from as little as one word replies; as such, she requires less direction from management and does much in a self-directed manner. Mackenzie is as capable as she is bright; her executive function and deductive reasoning are both quite strong. She possesses high EQ, strong organization skills and attention to detail - all important assets used regularly within her role. Her friendly demeanor, ability to remain calm under pressure, and professional attitude make her a pleasure to work with.

    Lauren Gross, COO & Partner at Founders Fund (via letter)

  • Mackenzie is an amazing, multi-talented person that any organization would be fortunate to have. She ran all marketing for Reaction, with spectacular results, all while managing executive office communications, travel and meetings. Mackenzie worked as the Producer on all of the marketing videos for Reaction and as a copy editor for the scripts and social media posts. She managed contractors, video production houses, and other vendors in a deft fashion. Mackenzie was also instrumental in new employee recruiting at Reaction, whereby she located and screened all potential employees before making her recommendations directly to me as CEO. Mackenzie is a friendly and very trustworthy professional, and I hope I get to work with her again soon.

    Michael McDaniel, Director of Design & Strategy at ICON (via Linkedin)

  • Mackenzie is a vital part of any team because she goes way beyond the "job description". She is highly motivated, eager to get involved, smart and a problem solver. Mackenzie is also one of the nicest people around and a pleasure to work with.

    Charlie Hartsock, CFO at SetJetters (via Linkedin)

  • I could not recommend Mackenzie more highly. I found her to be consistently pleasant, tackling all assignments with dedication and a smile. Besides being a joy to work with, Mackenzie is a take-charge person who is able to present creative ideas and communicate the benefits. Any future employer would be lucky to have her as part of their team.

    Drew Worobow, SVP Original Programming at IFC & AMC Entertainment (via Linkedin)