Sultan Bransyah

Full Stack Developer

PT Bina Investama Infonet(Pasardana) • Full-time

Jun 2025 - Present • 11 mos

I worked on building and maintaining fast, reliable, and user-friendly web platforms focused on financial and stock market information. My role involved creating responsive interfaces that display market news and stock data clearly across devices, integrating data from multiple sources, and ensuring smooth performance and scalability. I consistently optimized application speed, improved code quality, and proactively resolved issues to deliver a stable, high-quality user experience. I also collaborated on backend systems to support accurate financial data processing and seamless frontend integration.

Front End Developer

PT BAX Digital Indonesia • Freelance

Dec 2024 - Present • 1 yr 5 mos

I designed and optimized frontend systems using Next.js for web applications and Flutter for mobile apps to deliver reliable and high-performing experiences across platforms. I built responsive, intuitive, and user-friendly interfaces that work smoothly across browsers and devices, ensuring a seamless web and mobile experience. Working closely with UI/UX designers, I transformed visual designs into functional, high-quality applications aligned with user needs and design standards. I integrated frontend applications with backend services through well-structured APIs, optimized data flow and performance, and continuously improved code quality, security, and efficiency. I also proactively monitored application performance and resolved issues to maintain a stable, polished user experience.

Full Stack Developer

PT Edigy Djaya Global • Full-time

Feb 2024 - Jun 2025 • 1 yr 4 mos

I designed and optimized backend systems, including database management, API development, and integration with external services to ensure reliable and high-performing applications. I also built responsive and intuitive user interfaces that work smoothly across different browsers, devices, and platforms. Working closely with UI/UX designers, I translated visual designs into functional web interfaces that met user and business requirements. I ensured seamless data flow between backend and frontend systems through well-structured API integrations, continuously improved code quality, security, and efficiency, and proactively monitored application performance to quickly resolve issues, minimize downtime, and deliver a consistent, high-quality user experience.