Senior Commercieel Online Marketing Manager

32-40 hours
Meppel (Near Zwolle)

At GMU, we develop groundbreaking, scalable SaaS solutions that make a real difference for eCommerce entrepreneurs. Our mission? To help webshops worldwide reliably and predictably optimize their profitability by fully automating Google Shopping, data feeds, and campaigns through our own proprietary platform and app.

What you’ll be doing

At GMU, you’ll work on two core pillars of our technology:

You are commercially responsible for the two core pillars of our technology:

Business Analytics App

Free revolutionary business intelligence for every online entrepreneur.
  • Easily generated business analyses and clear insights for profitable growth
  • Continuous clarity on your ROI progress, empowering you to make informed decisions with confidence
  • Instantly monitor your Return on Ad Spend (ROAS), revenue, investments, visitor traffic, and conversion rates
  • Access comprehensive insights anytime, anywhere, to stay ahead of the competition
  • In-depth customer analysis: track both new and existing customers with detailed metrics

Martech Automation Software – Help build the engine behind 900% ROI

To enable these exceptional results, we are developing our own Marketing Technology Software (Martech Automation).

A Decision Hierarchy (Decision Engine):
Dynamic decision-making rules are applied here. They automatically determine where and how budgets are allocated for maximum growth.

Feed Automation Systems:
Product feeds, ad copy, and targeting are automatically optimized based on real-time data.

GMU = Best Place to Work 🎉

As our new Senior Manager, you are the strategic thinker and commercial driver with a proven track record in growing SaaS or e-commerce companies through online channels. You are not only an expert in optimizing campaigns but also in directing the entire commercial marketing process, from lead generation to conversion and retention.

You will be the engine behind commercial growth, ensuring all online marketing efforts directly contribute to business objectives.

💼 What you bring

Proven commercial success & leadership

  • You have at least 5 years of relevant senior experience in performance marketing, growth, or online marketing, preferably within a B2B SaaS or e-commerce environment.
  • You can demonstrate ** concrete results** in significantly improving profitability and growth, by focusing on Customer Lifetime Value (CLV), Customer Acquisition Cost (CAC), and funnel conversion rate enhancement.
  • You are accustomed to making strategic decisions and effectively communicating them to leadership and cross functional teams (Sales, Product, Tech) to support the commercial agenda.

Strategic tool mastery

  • You have demonstrable expertise in strategically deploying and integrating the full commercial marketing stack, including Google Ads, Meta Ads, commercial SEO, and Google Analytics, to ensure maximum ROI.

Full channel mastery: strategy & execution

  • You are an authority in data driven marketing and possess deep, strategic knowledge and operational experience with:
    • Performance Marketing (SEA/Social Ads): Setting up and optimizing scalable and profitable campaigns with large budgets, focused on achieving the lowest CAC.
    • SEO/Content Strategy: Identifying commercial opportunities and translating them into an actionable content strategy that generates leads and sales.
    • CRM & Email Automation: Utilizing the marketing stack to personalize and automate the customer journey, aimed at higher conversion and retention.

Focus on data & business impact

  • You are highly proficient in using analytics to solve complex marketing challenges.
  • You ensure that the right data is available to inform commercial decisions and maximize marketing ROI.

Personal growth = GMU

🏆 Why you’ll love working with us

💎 We work exclusively with senior developers and marketers
🔝 Top 10 FD Gazelle: One of the fastest-growing companies in the Netherlands
💰 An average client ROI of 900% (happy clients!)
❤️ Our clients rate us 9.6/10 and love working with us
🚀 21 years of perfecting our technology, and we’re just getting started!

💻 Work with the best hardware: you’ll get the fastest laptop and a 49” curved cockpit screen, allowing you to code across 5 screens simultaneously. Want to work with an absolutely epic setup? You can with us!

📚 Opportunities for training, new challenges, and career growth into leadership positions

💰 An exceptional, competitive salary matched to your experience

🎯 Ready for the ultimate challenge?


Apply Now  and show us why you are the high performer we’re looking for! 🚀

💡 Our Culture? We don’t call ourselves “staff”, we are a family.

🍽️ Luxury team dinners every 12 weeks

🎮 Game Night every Tuesday

🚀 Quarterly outings and team activities

🏡 Hybrid working? Working from home occasionally is fine, but team bonding and knowledge sharing are key; that’s why we’re usually together at our office in Meppel.

✈️ Freedom to temporarily work from abroad (for example, workcation)

🌎 International collaboration with e-commerce entrepreneurs and tech partners

🧠 20% R&D time, continuous innovation and diving into the latest technologies

🤖 AI as a growth accelerator: We leverage AI to learn faster and develop proofs of concept even more quickly.

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