Senior Fullstack Software Engineer (PHP/react)

**Company Description**
At KMS Technology Mexico, we are passionate about building innovative software solutions that drive impact. As part of an international tech company, we offer a collaborative and inclusive environment where your ideas matter and your growth is our priority.
We are seeking a highly skilled Senior Full Stack Developer to join our engineering team. We need an engineer who excels in high-scale backend environments while remaining proficient in modern frontend frameworks.
**Responsibilities**:
**Backend Engineering (80% Focus)**
- Design, build, and maintain robust server-side logic using PHP and the Laravel framework.
- Architect and implement efficient, scalable GraphQL APIs to support internal and external integrations.
- Optimize database queries and schema designs (MySQL/PostgreSQL) for high-concurrency transaction processing.
- Ensure the highest levels of security and PCI compliance across all backend services.
- Write comprehensive ...