Develop and maintain full‑stack web applications (front‑end & back‑end).Design and implement efficient, scalable, and secure database structures.Integrate with third‑party APIs and communication platforms (e.g., Twilio).Implement security best practices to protect customer and system data.Optimize application performance, resolve technical issues, and ensure high availability.Develop and document RESTful APIs and maintain API client libraries.Monitor API usage, track performance metrics, and ensure API stability.Collaborate with product managers, UX designers, and support teams.Troubleshoot and debug complex system issues effectively.