Developer Internship (SEO & E-commerce)

Apply for this role

Apply for this role

Development

Internship

At Sixth Man, we help companies grow through sharp marketing, clean code, and performance-first thinking. We’re not interested in vanity websites or pointless features. We build systems that scale and shops that sell.

We’re offering internships for ambitious developers who want to dive into the world of SEO, e-commerce, and marketing tech . You’ll work on real internal tools, webshops, and experiments. Not on fake school projects. :)

You’ll learn from senior marketers, engineers, and strategists and leave with hard skills, better instincts, and a real edge.

What you’ll work on

• Internal tools to support automation, data collection, and reporting
• E-commerce stores (Shopify, WordPress, WooCommerce) we manage ourselves
• Technical SEO implementation and experimentation
• Web performance optimization (Lighthouse, Core Web Vitals)
• Real collaboration with designers, marketers, and performance experts

What you’ll learn

• How to structure code for scalability and maintainability
• What actually makes a website fast, rank, and convert
• The fundamentals of SEO and performance marketing
• How real teams operate: async, cross-functional, no fluff
• How to prioritize what matters in a business context

Who we’re looking for

• You can write HTML/CSS/JS (and maybe some React or PHP)
• You’re curious about how marketing and e-commerce really work
• You take initiative, learn fast, and don’t need handholding every hour
• You’re hungry to learn from people who work at a senior level
• You care about quality and results, not just ticking boxes
• You speak at least Dutch and English

What we offer

• A seat inside a high-performance digital marketing team
• Mentorship from award-winning, experienced developers and marketers
• Full access to internal docs, processes, systems
• Feedback that helps you grow 10x faster than in a classroom
• A real-world portfolio of work you can be proud of

This internship is unpaid - but the investment we make in your growth is real. You’ll leave with knowledge and skills most juniors don’t get in their first job.

‍ ‍ This isn’t a coffee-run internship. If you want to get your hands dirty, learn fast, and build things that actually matter - this is your place.

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Primary ExpertiseSelect your primary expertise…SEOSEADisplay AdvertisingSocial AdvertisingAutomationFront-End DevelopmentBack-End DevelopmentUI/UX DesignGraphic DesignBrandingStrategyProject ManagementCopywriting

Secondary ExpertiseSelect your secondary expertise…SEOSEADisplay AdvertisingSocial AdvertisingAutomationFront-End DevelopmentBack-End DevelopmentUI/UX DesignGraphic DesignBrandingStrategyProject ManagementCopywriting

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