Mads Harretche

Hi! I'm Mads 👋

Ruby on Rails Developer based in Copenhagen

Building robust systems and innovative products

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Building & Growing

Currently working as a Full Stack Ruby on Rails developer at Autobutler, where I've built multiple features for their monolith and re-built their custom CMS, including re-styling components with Tailwind CSS. I've also expanded on existing React SPA and REST API projects.

Co-founded NordiumLabs, a software agency, together with Marcus Wilstrup, delivering tailored solutions to clients.

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Startup Experience

Previously co-founded MIX IT ApS, where we built a complete mobile ordering and POS (Point of Sale) solution. Created a browser-based POS in Rails + AngularJS with real-time websocket connections, and launched a mobile ordering app & PWA with the Ionic Framework.

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Side Projects & Products

Built and maintain multiple SaaS products including a driving school comparison site, a Danish Robinson List API, a competitor email intelligence tool, and an AI-powered content platform. Always working on new ideas and learning from every project.

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Tech Stack

Specialized in Ruby on Rails, JavaScript, React, and modern frontend frameworks. Experienced with PostgreSQL, Heroku, StimulusJS, Turbolinks, HTML5, CSS, Bootstrap, Tailwind, and Semantic UI.

Side Projects & Products

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SammenlignKøreskoler.dk

Driving School Comparison Platform

A comprehensive platform that allows users to compare driving schools across Denmark. Helps students find the best options based on price, location, and reviews.

Rails AI Data Aggregation Comparison Engine
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RobinsonlistenAPI.dk

Marketing Compliance API

Danish-market API service that enables businesses to check if individuals are listed on the Robinson List, ensuring compliance with privacy and marketing regulations.

REST API Rails GDPR Compliance
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Akia.io

Competitor Email Intelligence

SaaS platform that captures and analyzes competitors' emails, providing market intelligence through automated monitoring of email campaigns, social media activity, and marketing strategies.

Rails Email Monitoring Analytics
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Content-Atlas.com

AI Content Orchestration

AI-powered content orchestration platform that transforms a single idea into platform-specific content across multiple channels, streamlining content creation and distribution.

AI/ML Rails Content Generation

How I Work

Operating principles

  • Build features that deliver real value and solve actual problems.

  • Keep code clean, maintainable, and well-documented.

  • Take ownership from conception to deployment and beyond.

  • Iterate based on feedback and real-world usage.

  • Collaborate effectively and communicate clearly.

  • Ship incrementally. Small, frequent releases over big bangs.

Recent work

  • Autobutler: Built multiple features for Ruby on Rails monolith, re-built custom CMS with Tailwind CSS, expanded React SPA and REST API.

  • NordiumLabs: Co-founded software agency delivering custom solutions to clients.

  • MIX IT: Built complete mobile ordering and POS system with real-time websocket synchronization.

  • Multiple SaaS Products: Launched and maintain several profitable side projects.

What I'm great at

Ruby on Rails development

Building scalable monoliths with clean architecture and modern patterns.

Full-stack development

From database to UI, comfortable across the entire stack.

Product development

Turning ideas into shipped products that users love.

Let's Connect

I'm always interested in hearing about new projects, opportunities, or just having a great conversation about technology. Feel free to reach out!

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