What you will do

At GMU, you will work on two pillars of our technology:

Business Analytics App

Free, revolutionary business intelligence for every online entrepreneur.

Easily generated business analytics and clear insights for profitable growth
Continuous clarity about your ROI progress, so you can make informed decisions with confidence
Monitor directly your Return on Ad Spend (ROAS)., sales, investments, visitor traffic and conversion rates
Anytime, anywhere access To comprehensive insights so you stay one step ahead of your competitors
In-depth customer analysis: track both new and existing customers with detailed statistics

Martech Automation Software | Help build the system behind 900% ROI

To make these exceptional results possible, we develop our own Marketing Technology Software (Martech Automation).

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A Decision Hierarchy (Decision Engine):

Dynamic decision rules are applied here. They automatically determine Where and how budgets are allocated for maximum growth.

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Feed Automation Systems:

Product feeds, ad copy and targeting will be automatically optimized based on real-time data.

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About you

At least 10 years of experience with C#/.NET or PHP combined with React (or similar modern JS frameworks)
A high performer with deep expertise in Google Shopping and performance marketing
Extensive experience with ROAS/POAS optimization and automating custom label strategies within Google Shopping
Familiar with Google Ads scripts, server-side tracking, and feed management via proprietary software
Able to understand complex, event-driven microservices architectures and contribute strategically to scalable, high-performance solutions
Independently responsible for CI/CD pipelines, feature flags, and cloud-native deployments (Azure)
A strategic sparring partner for e-commerce clients: you translate business objectives into technical, high-performance strategies
Proactive, innovation-driven, and unafraid to embrace AI and generative technologies
Always seeking smarter workflows: you dedicate roughly 20% of your time to R&D and cutting-edge projects
Comfortable with full ownership: from concept through launch and maintenance, your projects are in good hands
A team player who enjoys collaborating with international e-commerce entrepreneurs and top specialists in a dynamic, creative environment

Our tech stack

Backend:
- C# (.NET Core / .NET 6+)
- Azure Functions
- Microservices architecture
Frontend:
- React (Web)
- React Native (Mobile)
Databases & Caching:
- Azure SQL Database
- Redis
- Cosmos DB
- Elasticsearch
DevOps & Deployment:
- Azure DevOps & GitHub Actions
- Docker
- CI/CD pipelines
- Feature Flags
Cloud:
- Microsoft Azure (Service Bus, Event Grid, Functions)
Other:
- Webhooks
- REST APIs
- Cron jobs (Azure Timer Functions)
- AI API integrations (Azure Cognitive Services, OpenAI)

AI, R&D & Innovation

Leveraging AI to learn and develop faster
Hands-on experience with AI APIs and generative AI
Using AI tools to enhance scalability and efficiency
Spending approximately 20% of your time on R&D and cutting-edge technologies
Contributing to our shared culture of innovation
Collaborating with international e-commerce entrepreneurs and industry partners

Ownership, Creativity & Freedom

Full responsibility for your own projects
Huge freedom to devise creative and innovative solutions
Working in a culture that encourages innovation and creative contributions

Extra bonus points for

Experience integrating AI into your workflows
Experience boosting development speed through AI
Experience with Large Language Models
Experience with Machine Learning

🏆 Why you will enjoy 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 customer ROI of 900% (satisfied customers!)

❤️ Our customers rate us with a 9.6/10 and love working with us

🚀 21 years of experience in perfecting our technology - And we have only just begun!

💻 Work with the best hardware: you get the fastest laptop and a 49” curved cockpit screen, allowing you to code across 5 screens simultaneously.
Want to work with an epic setup? It's possible with us!

📚 Opportunities for training, new challenges and advancement to leadership positions

💸 An exceptionally competitive salary that fits your experience

🎯 Ready for the ultimate challenge?

👉 Click on Apply Now and shows why You are the high performer we are looking for! 🚀

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💡 Our culture? We don't call ourselves “staff,” we call ourselves 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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Google Shopping specialist/developer (PHP / C#)