Marloes Slotboom

Available to hire

I am a performance marketing consultant and founder of Coby Agency, helping European SMEs grow through data-backed advertising, robust tracking, and practical marketing automation.

About

I am a performance marketing consultant and founder of Coby Agency, helping European SMEs grow through data-backed advertising, robust tracking, and practical marketing automation. My expertise spans Google Ads, Meta Ads, GTM, GA4, Looker Studio, BigQuery, SEO, and n8n, allowing me to connect strategy with the technical foundations needed for reliable decision-making. I have delivered strong results across lead generation, e-commerce, hospitality, B2B, and non-profit marketing, including 1,500% ROAS and significant improvements in lead volume.

I enjoy combining analytical thinking with clear communication and creative problem-solving. Alongside consulting, I teach Web Analytics and AI for Marketers at Amsterdam Data Academy, helping marketing professionals build confidence with modern tools and measurement approaches. I am customer-focused, tracking-first, and comfortable working with clients, agencies, developers, and cross-functional stakeholders to turn complex marketing challenges into practical growth opportunities.

  • 10 years' experience
  • Joined October 2024

Languages

  • DutchFluent
  • EnglishFluent
  • Spanish; CastilianBeginner

Industry experience

  • Consumer Goods
  • Financial Services
  • Professional Services
  • Retail
  • Software & Internet
  • Travel & Hospitality
  • Education
  • Manufacturing
  • Healthcare
  • Non-Profit Organization
  • Computers & Electronics

More experts in Barcelona, Spain

Work experience· 7 roles

Founder · Coby AgencySep 2025 – Present · 1 yr 3 mos

Founded a tracking-first performance marketing agency serving European SMEs. Deliver Google Ads and Meta Ads strategy, GTM and GA4 implementations, Looker Studio dashboards, BigQuery reporting pipelines, and n8n automation workflows connecting advertising platforms, CRMs, and reporting systems. Scaled monthly leads for OneMeeting Group / De Eenhoorn from approximately two to four or five per week and delivered 1,500% ROAS across paid channels, with the strategy rolled out across six venue locations.

Teacher & Course Developer · Amsterdam Data AcademyFeb 2024 – Present · 2 yrs 10 mos

Developed and teach professional courses in Web Analytics and AI for Marketers. Cover GA4, GTM, attribution modelling, and practical AI tools for marketing teams. Deliver training to marketing professionals through group cohorts and private sessions, and delivered a bespoke n8n marketing automation workshop for Dormio.

Data Science Associate Manager · Risk FactorOct 2023 – Apr 2025 · 1 yr 7 mos

Led Data Science business development and helped shape the company’s Data Science and AI strategy alongside a team of developers. Managed client communications and oversaw the strategic development of AI and data science product offerings.

Founder & Digital Marketing Consultant · Locktree Digital ConsultancyJan 2021 – Sep 2025 · 4 yrs 9 mos
Agency Account Strategist — Google Ads · GoogleSep 2018 – Dec 2020 · 2 yrs 4 mos
E-commerce Manager Benelux · The Body ShopJan 2016 – Dec 2016 · 1 yr
SEA Specialist · FosbyApr 2014 – Sep 2015 · 1 yr 6 mos

Education

MSc Business Information Management · Erasmus University2021 – 2022
BA Commercial Economics · University of Applied Sciences Utrecht2012 – 2016
MSc Business Information Management · Erasmus University Rotterdam2021 – 2022
BA Commercial Economics · University of Applied Sciences Utrecht2012 – 2016

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