I

iO Tech Stack

European digital agency delivering marketing, content, and scalable platforms

Technology, Information and Internet Herentals 1,001–5,000 employees Privately Held

iO is a 2,000-person digital agency operating across 12 campuses in Belgium, the Netherlands, Sweden, Denmark, and Bulgaria. The tech stack reveals a hybrid agency model: heavy Adobe (Journey Optimizer) and Salesforce (Marketing Cloud) for campaign delivery, paired with backend depth in Java, Node.js, PHP, and Drupal for platform engineering. Active adoption of Azure DevOps, Sitecore, and Umbraco signals a shift toward headless CMS and cloud-native infrastructure, while pain-point data shows friction around content migration and high-traffic scaling—typical signals of a services business consolidating legacy client builds.

Tech Stack 199 technologies

Core StackHubSpot AWS Java Node.js PHP MySQL React GraphQL Vue Elasticsearch Terraform Cypress Postman Jira JavaScript Next.js Adobe Journey Optimizer Salesforce Marketing Cloud Azure Drupal REST Git Drush Composer Symfony Azure Kubernetes Service TestCafe Browserstack HTML CSS+167 more

AdoptingAzure DevOps RAG VMware GitHub Copilot Sitecore Umbraco Google Tag Manager Proxmox+1 more

What iO Is Building

◆Challenges

Traffic loss during seo migrations
Increasing conversion rates
Customer service improvement
Pipeline management optimization
Automation impact on business
Booking increase
Content migration
Scaling high-traffic environments
Lead generation optimization
Complex cms environments

▲Active Projects

App development for top brands
Push notification and landing page projects
Content migration
Landing page optimization
A/b testing & experimentation
Seo migrations
Hubspot migration
Email and sms marketing automation
Azure devops implementation
Seo projects for ns, abn amro, and tui

Hiring Activity

Decelerating180 roles · 45 in 30d

Department

Engineering

67

Marketing

63

Sales

14

Data

11

Finance

4

HR

4

Consulting

3

Product

3

Seniority

Senior

93

Mid

64

Lead

10

Director

4

Intern

1

Junior

1

Notable leadership hires: Development Lead, Client Service Lead, Public Services Director, Marketing Director

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About iO

iO delivers integrated marketing, content strategy, and digital platform development to enterprise clients across Europe. Founded in 2005, the firm now operates 1,500+ client relationships with a distributed model spanning Belgium, Netherlands, Bulgaria, Sweden, and Denmark. Services span campaign orchestration (Adobe/Salesforce), custom application development (Java/Node.js/Drupal), and infrastructure modernization (AWS/Azure). The hiring mix—67 engineers, 63 marketers, and support functions—reflects a services organization balancing delivery capacity with account management. Current work includes HubSpot migrations, SEO optimization, content platform builds, and A/B testing programs for high-traffic properties.

HeadquartersHerentals

Company Size1,001–5,000 employees

Hiring MarketsNetherlands, Belgium, Canada, Bulgaria

Frequently Asked Questions

What tech stack does iO use?

Primary stack: Adobe Journey Optimizer, Salesforce Marketing Cloud, HubSpot, AWS, Azure, Java, Node.js, PHP, Drupal, MySQL, React, and Kubernetes. Actively adopting Azure DevOps, Sitecore, Umbraco, and GitHub Copilot.