Fullstack Web Developer
PT SUM Digital Konsultan
- Placed on-site with an international client, contributing as a full member of their product development team
- Designed and developed a modular Spring Boot backend architecture to improve maintainability and scalability across multiple services
- Implemented secure authentication using Keycloak (OIDC), standardizing identity management across the system
- Built a time-based QR code system with HMAC validation, preventing replay attacks and improving access security
- Designed and executed concurrency tests using K6 to simulate high-load scenarios, identifying race conditions and improving system reliability
- Containerized the application using Docker, ensuring consistent development and production environments
- Developed and maintained client web applications using Ruby on Rails, focusing on performance optimization and feature delivery
- Built a modern frontend for a file translation service using Nuxt 3, Pinia, and Zod/Vee-Validate, improving form reliability and user experience
- Optimized client-side performance by leveraging IndexedDB and Local Storage for efficient data handling
- Collaborated within a structured development workflow using version control and team-based delivery practices