ABOUT US:At Gradion, we are the strategic partner for ambitious businesses, helping them achieve breakthrough growth through Digital Innovation and Deep Tech.With a global vision and an AI-first approach, we enable clients to reshape strategies, optimize systems, and adopt cutting-edge technologies to create sustainable value.From AI and data to cybersecurity, robotics, and large-scale enterprise platforms, Gradion designs practical solutions that lay the foundation for the next generation of billion-dollar companies.OUR FACTS & FIGURES:- 23+ years of expertise — Gradion builds digital platforms & deep-tech solutions.- 3 continents: Asia, Europe and Africa.- 300+ specialists across 7 countries Vietnam, Singapore, Thailand, Saudi Arabia, Germany, Egypt, Indonesia.- 100+ enterprise clients, including several unicorns (e.g., Alaiko, HomeToGo, Roadsurfer).- Vietnam’s Best IT Company – recognized by ITViec for 7 consecutive years, including 2 consecutive years of ranking #1 (2024 and 2025) ISO 27001.- ISO 27001. In this role you will:1. Backend Development- Design and implement scalable components using Symfony/Laravel and PHP 8.3- Manage MongoDB data models with Doctrine ODM- Develop and maintain RESTful APIs- Integrate and support payment gateways (Adyen, EasyBill)- Implement core business logic including user management and rating systems2. Database & Performance- Optimize MongoDB queries and document structures- Implement Redis for caching and session handling- Support application performance tuning and monitoring3. Frontend Integration- Maintain Bootstrap 5-based UI and support AJAX interactions- Collaborate on React component integration at a basic level- Ensure responsive design and cross-browser compatibility4. System Integration & Infrastructure- Work with third-party APIs (AWS, Google, Adyen, etc.)- Follow security and internationalization (i18n) best practices- Deploy and maintain containers using Docker with Nginx and AWSQuality Assurance- Write and maintain unit tests and technical documentation- Adhere to PSR-12 coding standards and participate in code reviews