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When dealing with over 10 million tons of hazardous waste every year, IT operational efficiency is a prerquisite and a critical environmental and public health responsibility

As the European leader in treating hazardous industrial waste and restoring polluted sites, Veolia | Hazardous Waste Europe faced a major digital hurdle. Their legacy tool used by their sales representatives to subscribe their clients to the waste management functionalities of the customer portal, Optilia, was beginning to hit its performance and ergonomic limits.

To transform this cornerstone of their commercial operations, Veolia turned to technical expert Webnet. The mission: overhaul and build a brand-new, lightning-fast, intuitive, and secure back-office platform.

Here is how Webnet leveraged the power, modularity, and technical consistency of Symfony to deliver a highly scalable cloud solution in just 10 months:

The Strategy: Technical Continuity and Full Personalization

When Webnet audited the project requirements, the decision to build the new Optilia back-office on Symfony emerged naturally for three strategic reasons:

  1. Unifying the Ecosystem: Symfony was already the powerhouse driving the Optilia front-office portal. Opting for Symfony for the back-office ensured complete architectural continuity, which heavily simplified long-term maintenance and future feature scalability.

  2. Absolute Freedom: Industrial waste management involves highly specific workflows, unique data structures, and complex compliance tracking. Symfony provided the engineering team with complete flexibility to craft customized business features without dealing with framework constraints.

  3. Proven Team Expertise: As a seasoned expert in custom web application development, Webnet knew they could rely on the modern foundations of Symfony to guarantee code quality, robust security, and rapid development cycles.

Under the Hood: The Symfony Components Driving the Back-Office

To fulfill Veolia high standards of responsiveness and administrative control, Webnet deployed a multi-disciplinary team, including 4 dedicated PHP/Symfony developers.

The team designed a robust stack combining PHP, Symfony, PostgreSQL, and AWS Cloud hosting. Instead of over-engineering the platform with heavy external layers, the team cleverly picked specific Symfony components to address their core technical challenges:

  • 🎨 symfony/ux-live-component & symfony/stimulus-bundle: Built a highly reactive, snappy interface with real-time UI updates, completely bypassing the need for a complex JavaScript framework.
  • 🚀 symfony/asset-mapper & symfonycasts/sass-bundle: Streamlined modern asset compilation and native versioning without introducing any Node.js dependencies.
  • ⚙️ symfony/messenger & symfony/scheduler: Offloaded heavy data processing to asynchronous queues and smoothly automated recurring background routines.
  • ⚙️ đź”’ symfony/security-bundle: Provided robust, enterprise-grade access control to enforce strict authorization rules across internal sales teams.

Results: High Adoption and Technical Scalability

Ten months after the development kick-off, the new back-office platform went live. Webnet comprehensive approach, blending expert engineering with user training and change management—resulted in immediate success:

  1. Dramatically Faster Operations: Sales teams transitioned from a sluggish legacy system to a fast, intuitive experience, slashing wait times and accelerating subscription workflows.

  2. Enthusiastic User Adoption: The ergonomic UX delivered through Symfony UX renewed team enthusiasm and drove instant internal adoption.

  3. Stronger Client Relationships: The enhanced administration capabilities of the Optilia extranet gave clients greater transparency over environmental reporting.

  4. Future-Proof Architecture: Powered by AWS and the modularity of Symfony, the system is highly available and ready to evolve alongside fluctuating industrial waste volumes and shifting European regulations.

By choosing Symfony, Webnet and Veolia proved that enterprise-grade environmental management tools can be both technologically sophisticated yet simple and intuitive to use.


Technical stack

  • Symfony
  • PostgreSQL
  • AWS Cloud hosting
Published in #Case studies