Mathieu Stark

Experience

• 

  829 Studios

  SVP, Analytics & AI

  Feb 2026 - Present
• 

  Stark Fractional Group

  Founder/CEO

  Jan 2026 - Present

  I work as a fractional CEO and COO for small to mid-market companies, mostly in tech and tech-adjacent services. I come in to build the operating side of a growing business and to help leaders put AI to work in ways that actually move the company, then stay hands-on to get it done.

  • Build the structure, processes, and systems that let a business scale without breaking, and reduce its dependence on the founder
  • Map how work actually gets done across functions like finance, operations, IT, and customer service, then redesign the parts that slow growth down
  • Help teams adopt AI in practical ways, from the tools they use day to day to the rules that keep data safe as usage spreads
  • Act as a thought partner on operations, growth, and where AI fits, and own the rollout rather than handing over a plan and walking away
• 

  Definian (formerly Premier International)

  VP, Insights & AI

  Jan 2025 - Dec 2025

  Post-acquisition leadership role with full P&L responsibility for the firm's fastest-growing division. Leading teams across the US and India, focused on driving revenue growth, professionalizing operations, building leadership layers, and scaling sustainably.

  • Transformed the practice from acquisition integration to a market-leading offering, delivering strong revenue growth while maintaining client retention and service quality.
  • Expanded into new industry verticals, diversifying the client base and reducing concentration risk.
  • Built a leadership team to oversee cross-country operations and establish a scalable management structure.
  • Drove operational integration during periods of organizational change, ensuring continuity, retaining key talent, and preserving culture.
  • Restructured client engagements around value delivered rather than cost-plus pricing, increasing contract value and shifting relationships to ongoing advisory partnerships.
  • Developed consultants into practice leaders and created career paths that retain top talent.
  • Applied lessons from my own acquisition experience to guide integration strategy, accelerating transitions across the combined organization.
• 

  Analytiks (Acquired by Definian)

  Founder/CEO

  Jan 2017 - Jan 2025

  Founded and scaled Analytiks, an AI and analytics consultancy, from a solo practice into a successful acquisition. Built and operated all core functions including sales, delivery, finance, and talent. Served Fortune 500 clients across multiple industries and led the company through acquisition by Definian in 2025 with full team and client retention.

  • Built a profitable, self-funded business from zero, maintaining disciplined cost structure and strong margins.
  • Designed and executed enterprise go-to-market strategy, establishing long-term client relationships through consistent execution and measurable outcomes.
  • Built and developed the leadership team and management systems required to scale, enabling effective delegation and sustainable growth.
  • Owned pricing strategy, cash flow management, and profitability, balancing reinvestment with financial stability.
  • Led executive-level sales efforts and C-suite relationships, driving account expansion and retention.
  • Positioned the business for strategic acquisition through operational maturity, client portfolio quality, and cultural alignment. Led negotiation and transaction execution while preserving continuity for employees and clients.
• 

  T-Mobile

  Manager, Business Analysis - Channel Strategy & Analytics

  Jan 2016 - Jan 2017

  Led a team of analysts focused on channel performance across T-Mobile's national network of retail and partner locations. Ran cross-departmental projects spanning reporting, predictive modeling, and application development that supported executive decision-making. Left to found Analytiks.

  • Built predictive models that guided executive pricing and incentive decisions across the national retail channel.
  • Partnered with leaders across multiple departments to turn operational data into decisions they could act on, and set up reporting that gave regional leadership a current view of performance.
• 

  ALLDATA

  Manager, Reporting & Analytics

  Jan 2013 - Jan 2016

  Managed a reporting and analytics team across North American and European markets for an automotive data services company supporting hundreds of thousands of professional technicians worldwide. Led a team restructuring and process improvements that improved data accuracy and reporting reliability.

  • Restructured workflows and improved data integrity while cutting report turnaround sharply across multiple product lines.
  • Built executive dashboards and predictive models that informed business decisions and guided planning across global operations.

• Early Career

  Early Career

  Jan 2002 - Jan 2013

  Progressive roles in financial analysis and retail management at Luxottica, Tommy Bahama, and Fossil. Owned store-level P&Ls, led sales teams, and delivered financial analysis that supported regional decision-making. Foundation that built the operational and analytical skills carried into future leadership roles.