Backend Developer

Key Responsibilities and Achievements:

• Successfully migrated the existing Drupal 9 system, which serves millions of users monthly, to Drupal 10, ensuring a seamless transition and minimal downtime.
• Upgraded PHP versions from 8.1 to 8.3, enhancing performance and security.
• Designed and implemented a new microservice using API Platform to improve ad placement for connected applications.
• Migrated the deployment pipeline to ArgoCD Kubernetes, streamlining the deployment process and enhancing system reliability.
• Improved the deployment process to improve zero downtime deployments for Drupal, ensuring uninterrupted service for millions of users.

• Built dev environment
• Built CI/CD infrastructure using Gitlab and DigitalOcean
• Built CI/CD infrastructure for AWS with Kubernetes and ArgoCD
• Added session integration into authentication flow
• Added Symfony integration for Almefy SDK
• Added testing support
  • Separated core system internal module to proxy to allow testing most critical areas
  • Added tests for core components

• Spearheaded and implemented company-wide CI/CD test automation by leveraging the Gitlab pipeline and integrating the Robo framework, replacing internal scripts in the development environment.
• Advocated for and facilitated the adoption of Codeception as the primary testing framework, leading to the successful transition of the old payment system to a microservice architecture integrated with the Wallee payment system for invoicing.
• Played a key role in educating developers and stakeholders about the benefits of microservices and actively participated in the development of microservices for invoicing, shipping, and building libraries to facilitate communication between different microservices.

• Helped to migrate legacy monolithic Flight Search PHP service to smaller and faster Java microservices.
• Moved old/non-existing local development environment into docker/docker-compose to help speed up and improve development.

• Led a cross-national team in developing a delivery management system using API Platform microservices.
• Provided architectural input and introduced elevated code quality and testing standards to prevent major issues during project development.
• Set up a local development environment using Docker and implemented a CI/CD process for deployment to Google Cloud with Circle CI.

• Developed a fresh project built on Symfony 4 with React frontend system for hotel management registration.
• Helped maintain and upgrade custom CMS user portal and managed integration between connected systems.

• Maintenance of banking system.

• worked on support and refactoring of old Medical user management system infrastructure
• helped integrating existing software with 3rd party clients.

• Worked as a core developer for OXID e-shop framework.
• Insured high code quality, high test quality, improved performance of e-shop framework and various other areas, like test runtime.

• Built various custom web solutions for multiple different clients and projects.