Senior Experiential Account Lead — Client Champion

Mosaic North America; Los Angeles (CA); Hybrid; USD 90,000 - 95,000; Full time

Job summary

Mosaic Sales Solutions US Operating Co, LLC is seeking a Senior Account Manager to lead experiential marketing programs from brief to execution. You will manage client relationships, guide internal teams, oversee budgets, and ensure high standards of creativity, operational excellence, and measurable impact.

The role requires strategic thinking and hands-on execution, balancing client objectives with agency capabilities while maintaining strong relationships internally and externally.

Qualifications

• 7+ years of experience in experiential marketing, event marketing, integrated marketing, agency account management, or related fields.

Responsibilities

• Serve as the primary day-to-day client contact and trusted advisor across assigned accounts.
• Build strong, long-term partnerships by understanding client business objectives, industry trends, and marketing priorities.
• Anticipate client needs before they arise and proactively recommend solutions and opportunities.
• Lead client meetings, presentations, status updates, and program reviews with confidence and professionalism.
• Help clients navigate challenges while maintaining positive, productive relationships.
• Lead the planning and execution of experiential programs from kickoff through final reporting.
• Manage multiple projects simultaneously, ensuring work is delivered on time, on budget, and on strategy.
• Develop program timelines, workbacks, scopes of work, status documents, and project plans.
• Coordinate seamlessly with creative, strategy, operations, production, staffing, analytics, and finance teams.
• Identify risks early and develop solutions before they become problems.
• Translate client business goals into actionable experiential marketing strategies.
• Contribute to program ideation and development with insights grounded in consumer behavior and business objectives.
• Help shape integrated programs that connect experiential efforts with broader marketing initiatives.
• Own program budgets, forecasting, reconciliations, and profitability.
• Develop estimates, scopes, and client proposals.
• Monitor project financial health and identify opportunities for efficiency and growth.
• Partner with leadership to support revenue growth within assigned accounts.
• Mentor, coach, and support junior team members, helping them grow both professionally and personally.
• Foster collaboration across departments and create an environment where great work can thrive.
• Lead by example through accountability, positivity, and a solutions-oriented mindset.
• Support talent development and contribute to Mosaic's culture of continuous learning and improvement.
• Identify opportunities to expand client relationships and introduce additional agency capabilities.
• Support proposal development, pitches, and business development initiatives as needed.
• Actively contribute ideas that help grow both client partnerships and agency success.

Skills

Client leadership

Budget management

Communication

Team leadership

Strategic thinking

Job description

Mosaic Sales Solutions US Operating Co, LLC is seeking a Senior Account Manager to lead experiential marketing programs from brief to execution. You will manage client relationships, guide internal teams, oversee budgets, and ensure high standards of creativity, operational excellence, and measurable impact.

The role requires strategic thinking and hands-on execution, balancing client objectives with agency capabilities while maintaining strong relationships internally and externally.