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Johnny J. Andersen

I'm a seasoned technical leader and self-proclaimed “Internet Wizard” / “King of the Internet” based in Copenhagen, Denmark.

For more than two decades I’ve built and scaled data-driven platforms used by millions, combining engineering craftsmanship, pragmatic product thinking, and strategic insight. I enjoy working where complex systems, real-world impact, and fast-moving teams meet.

My interests include scalable backend systems, cloud infrastructure, AI/ML, developer experience, green tech, and data-heavy platforms.


What I Do

  • Lead distributed engineering teams across web, mobile, and platform
  • Design and scale cloud-native SaaS systems
  • Champion engineering craftsmanship and developer experience
  • Align product, engineering, and business strategy
  • Build pragmatic solutions that ship fast and scale reliably

Selected Experience

VP Engineering — Portchain

Building cloud-native tools that optimize global port operations and help reduce CO₂ emissions in container shipping.
Tech: TypeScript, Node.js, GCP, Postgres, Terraform

CTO — Tonsser

Scaled one of Europe’s largest youth football platforms to millions of players and fans.
Tech: Rails, Heroku, Android, iOS, GraphQL, Cloudflare Stream

CTO — Autobutler

Scaled a pan-European marketplace for car repairs across 7 countries and ~200k monthly users.
Tech: Ruby on Rails, Heroku, SEO at scale

Founding Engineer / CTO — Copenhagen Shipping Exchange

Built early modern platforms for global shipping data, including email ingestion pipelines, Outlook plugins, and cargo search tools.

CTO — Euroinvestor

Joined as an engineer and later led the platform as CTO through its IPO on the Copenhagen Stock Exchange.
Tech: C#, .NET, MS SQL Server


Why I Do It

I thrive at the intersection of complex technology and real-world impact — from hyper-growth startups to long-lived platforms evolving toward sustainability.

I care deeply about well-crafted systems, strong engineering culture, and teams that move fast without losing sight of quality.


Outside of Work

Dad of two
Gamer
AI tinkerer
Green-tech nerd
Curious investor

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