Software Engineer / Backend Engineer
reducing third-party vendor reliance and cutting development costs. Freelance Backend Developer • PT Harmoni Digital Indonesia JanuaryPresent | Jakarta Pusat, Indonesia Built and maintained high-performance RESTful APIs with NestJS and TypeScript, handling over 500K requests per month across multiple services. Optimized PostgreSQL, MongoDB, and Redis schemas, reducing average API response times by up to 40% through strategic indexing and caching. Implemented secure, scalable authentication using JWT and Google OAuth2, enabling cross-platform login for 5+ integrated systems . Integrated critical third-party services, including WhatsApp API, Iris Payment, Firebase Notifications, and Gmail API, enhancing system interoperability
Politeknik Negeri Malang・
Information Technology