♻️ PRODUCT SOFTWARE ENGINEER (BACK END PHP) (M/W/D) – Drive Innovation in Green Tech | Interzero CSG GmbH, Köln

Interzero is a pioneer in plastics recycling and one of Europe's leading providers for closing product, material, and logistics cycles. Operating Europe's largest sorting capacity, the company supports over 80,000 customers across the continent in responsible material management and sustainability improvement. Around 2,000 employees drive annual revenues of nearly one billion euros. In 2024 alone, Interzero's recycling activities saved approximately 1.04 million tons of greenhouse gas emissions and 8.09 million tons of primary raw materials compared to primary production.

Your Role

• Transform one of the oldest industries through innovative software solutions.
• Independently develop complex web applications and services using modern, lightweight architectures with PHP, SQL, JavaScript, HTML, and CSS.
• Take full ownership of technical implementations after a structured onboarding phase and actively evolve existing systems.
• Build and maintain both frontend and backend components.
• Focus primarily on web shop solutions (Magento) and logistics applications powered by Laravel.

Why Interzero?

• A secure, varied role in a future-proof sustainability industry.
• Performance-based compensation with a strong work-life balance focus.
• Flexible working hours and remote work options.
• An environment that encourages ideas, initiative, and creative freedom.
• Flat hierarchies with quick access to meaningful responsibility.
• A collaborative, respectful culture at eye level.
• Access to internal and external training programs.
• Comprehensive health management program.
• Attractive perks: corporate benefits, bike leasing, free drinks and fruit, Germany ticket or Edenred card.

Your Profile

• Completed training as an application development specialist, a degree in computer science, or several years of proven PHP development experience.
• Strong knowledge of PHP 7, MariaDB 10, JavaScript, HTML5, and CSS3.
• Experience with Git and Atlassian tools; ideally initial experience with Magento 2.x and Laravel 5.x.
• High level of accuracy, structured and solution-oriented working style.
• Fluent German (written and spoken) and good English skills.
• Independent working style complemented by strong analytical thinking.