Stefan Roos

Senior Manager at Accenture | Marketing & Customer Strategy | Data & AI | Digital Transformation

Amsterdam, North Holland, Netherlands

About

I am a strategic leader with over 13 years of experience driving growth and transformation at the intersection of customer strategy, marketing, data, and technology. I help organizations improve marketing effectiveness, strengthen customer engagement, and deliver measurable impact by leading cross-functional teams and working closely with senior and C-level stakeholders.

Experience

  • Accenture (4 yrs 7 mos)
    • Senior Manager Marketing, AI & Data
      Jun 2025 - Present · 1 yr 2 mos

      Driving Data & AI, Marketing, and Customer Strategy initiatives for major global clients across industries. Acting as account lead, shaping strategic transformation programs, building trusted relationships with C-suite executives, and accelerating business growth. As a member of the Data & AI Management Team, contributing to practice development. • Led teams of up to 26 consultants across practice and project engagements, strengthening capabilities, increasing chargeability, and supporting long-term growth. • Develop data-driven marketing strategies and transformation programs to elevate customer experience, improve marketing effectiveness, and drive measurable business impact. • Create integrated go-to-market strategies and operating models, encompassing pricing, positioning, omnichannel planning, and Martech optimization. • Drive high-value RFP processes and strategic business development initiatives, securing new partnerships and expanding key client relationships. • Engage directly with C-level stakeholders and ecosystem partners to ensure alignment and deliver complex transformation agendas. • Support capability building and talent development, coaching team members and contributing to a high-performance culture across the practice.

    • Manager Marketing Strategy
      Jan 2022 - May 2025 · 3 yrs 5 mos

      & Head of Media Benelux

  • ANWB (6 yrs 2 mos)
    • Team Lead Marketing & Data
      Jan 2021 - Dec 2021 · 1 yr

      Advanced ANWB’s marketing maturity by leading initiatives in customer strategy, marketing technology, and digital transformation across multiple business units. Focused on increasing marketing effectiveness, customer engagement, and data-driven decision-making within a complex, multi-service organization. • Led a cross-functional team of 10 specialists in marketing, data, and technology to deliver integrated marketing solutions. • Strengthened data-driven decision making by enhancing Martech foundations, streamlining processes, and improving team capabilities. Achieving a 20% cost reduction through smarter budget allocation. • Achieved a 30% reduction in external agency spend through a more effective operational model for media operations, improving agility and long-term efficiency.

    • Digital Marketing Strategist
      Jul 2018 - Dec 2020 · 2 yrs 6 mos

      Responsible for company-wide digital marketing strategies across diverse business units, ensuring cohesive and effective execution throughout the organization.

    • Senior Digital Campaign Manager
      Nov 2016 - Jun 2018 · 1 yr 8 mos

      Managed multi-million-euro marketing campaigns across the full funnel, driving acquisition, engagement, and retention across ANWB’s core business units.

  • NEWCRAFT (Amsterdam)
    • Search & Media Specialist
      Aug 2014 - Oct 2015 · 1 yr 3 mos

      At Newcraft (now part of VML), I helped major brands translate search, media, and content strategies into measurable digital growth. • Managed multiple high-budget search & media marketing campaigns with million-euro allocations across multiple large clients, optimizing performance and return on investment.

    • Content Specialist
      Sep 2012 - Aug 2014 · 2 yrs

      Developed and optimized engaging content across multiple platforms, aligning with brand voice and strategy, to enhance audience engagement and drive visibility and traffic growth.

  • Intern Marketing & Online at Microsoft
    Feb 2012 - Aug 2012 · 7 mos