Case study

GTM Mixer

Discover how NerdHeadz developed GTM Mixer, a GTM configuration tool designed to simplify customization and management for users with minimal technical expertise.

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The challenge

What we set out to solve

Managing Google Tag Manager (GTM) configurations was a complex and error-prone task for GTM Mixer’s team.

They faced challenges like
- Time-consuming manual work: Adjusting JSON files required technical expertise and often led to inconsistencies.
- Risk of human error: The manual process made setups prone to mistakes, slowing down workflows.
What they needed was clear
- A simpler, more efficient way to manage configurations.
- An automated tool that worked for both technical and non-technical users.
The challenge wasn’t just solving the problem but creating a solution flexible enough to handle complex conditions while remaining easy for anyone to use. That’s where we stepped in.

The approach

Building the Right Solution

GTM Mixer imagined a smarter, more user-friendly way to manage Google Tag Manager (GTM) configurations.

Performance
Ensuring fast load times and responsive interactions.
Security
Implementing robust security measures and data protection.
Maintainability
Building clean, well-documented code for long-term maintenance.

Their goal was to create a tool for automatically managing, processing, and updating JSON files that would be accessible to everyone, regardless of technical expertise.

Three main objectives
Simplify GTM configuration, automate processes with intelligent rules, and improve UX with an intuitive interface.
Key features
Automated JSON processing with predefined rules, and custom rule modifications for precise changes based on specific conditions.

This idea wasn’t just about efficiency but about giving users the confidence and tools to manage even the most complex setups easily.

The solution

How we built it

Creating a solution for GTM Mixer meant focusing on functionality, ease of use, and adaptability.

We broke the process into clear phases to ensure thorough execution.

Development process

Planning & Design (Weeks 1-4)

Defined core features like JSON automation and rule-based logic. Built prototypes for the JSON parser and automation framework.

Development & UI Implementation (Weeks 5-8)

Built backend logic using Bubble.io and JavaScript. Developed a user-friendly interface with React.js/Vue.js. Integrated error detection for consistent results.

Testing & Launch (Weeks 9-12)

Conducted rigorous testing to ensure accuracy and performance. Released the MVP for client feedback and made improvements based on input.

Technologies used

Bubble.io for backend functionality, JavaScript for rule-based JSON management, React.js/Vue.js for a responsive interface.

Results

What it delivered

Delivered MVP within 12-week development cycle across 3 structured phases
Automated JSON processing replaced manual GTM configuration, eliminating human error in tag setups
Rule-based logic engine enables non-technical users to manage complex GTM conditions without coding
Built with Bubble.io backend and React.js/Vue.js frontend for responsive cross-device access
Custom rule modifications allow precise JSON changes based on specific conditions and triggers

Our roles