Albert Z.

Airalo provides global eSIM access for travelers, enabling connectivity without physical SIM cards.

• Developed and maintained two major platforms: an admin portal for order and company management and a client-facing Vue.js application for purchasing eSIMs.
• Created Laravel-based APIs to manage transactions, invoicing, and user data.
• Worked with Docker and MariaDB to support scalable deployments and ensure optimal database performance.
• Emphasized clean architecture and seamless communication between frontend and backend components.

Personio is an all-in-one HR solution for small and mid-sized companies in Europe.

• Contributed to a Laravel monolith application by refactoring legacy code and modularizing business logic using events and job queues.
• Optimized application performance and resolved memory issues through profiling and monitoring with Datadog.
• Improved large-scale data import processes by applying SQL transactions and backend reliability best practices.

• Implemented a complex database structure and managed relationships for the Task Management mobile and web application.
• Developed and documented API endpoints to enable seamless integration between the frontend and backend.
• Extracted and analyzed reports using database queries to support task tracking and results collection.
• Wrote integration tests to ensure the reliability and correctness of application functionality.
• Contributed to the overall system design, ensuring tasks and questionnaires could be efficiently defined and executed by users.

• Developed the backend of a web-based booking application using Laravel, managing core business logic and data flow.
• Integrated external payment services via APIs to handle secure transactions.
• Managed frontend functionality using Livewire and JavaScript, ensuring seamless user interactions.
• Implemented scheduling features that allowed users to book medical service slots and enabled administrators to configure working hours.
• Maintained data integrity and application reliability through structured backend design and testing.