siegfried sutanto
@siegfriedsutanto
Senior Fullstack Engineer at RiskSoft who modernized web portals and built scalable APIs with Next.js, React, TypeScript, Python, and PostgreSQL.
TaiwanWhat I'm looking for
At RiskSoft, I architected and maintained central web portals for multi-product application ecosystems using Next.js, React, and TypeScript. I also engineered backend APIs in Python and PostgreSQL and improved runtime efficiency and load speeds through client/server caching and A/B testing.
At ViaDirect by L’île des Médias, I led frontend architecture modernization into scalable React.js applications and developed responsive web apps for enterprise venues. I also built a stock screening platform with financial data visualization and subscription checkout through PayPal.
Experience
Work history, roles, and key accomplishments
Senior Fullstack Developer
RiskSoft
Mar 2020 - Aug 2026 (6 years 5 months)
Architected and maintained central web portals for multi-product application ecosystems using Next.js, React, and TypeScript. Engineered scalable backend APIs in Python and PostgreSQL, managing automated CI/CD pipelines via Jenkins.
Frontend Engineer / UI Developer
ViaDirect by L’île des Médias
Apr 2020 - Mar 2026 (5 years 11 months)
Led frontend architecture modernizing legacy architectures into scalable React.js applications across global commercial platforms. Developed responsive cross-platform web apps serving enterprise venues across Asia, Europe, and North America.
Maintained core infrastructure for high-traffic mobile gaming platforms. Refactored legacy PHP backend APIs, eliminating redundant data calls and reducing server payload sizes.
JavaScript UI Developer
ViaDirect by L’île des Médias
Sep 2018 - Nov 2019 (1 year 2 months)
Built interactive SPA applications for international enterprise clients using React.js and Backbone.js. Integrated marketing analytics engines to assess user interaction across commercial touchpoints.
Education
Degrees, certifications, and relevant coursework
National Cheng Kung University
Master of Science, International Business Administration
2016 - 2018
M.S. in International Business Administration (IMBA) from National Cheng Kung University, Taiwan, from 2016 to 2018.
Institute of Science and Technology Surabaya
Bachelor of Science, Information Systems
2011 - 2015
B.S. in Information Systems from Institute of Science and Technology Surabaya (iSTTS), Indonesia, from 2011 to 2015.
Tech stack
Software and tools used professionally
Availability
Location
TaiwanAuthorized to work in
Website
portofolio-sieg.web.appPortfolio
portofolio-sieg.web.appSalary expectations
Social media
Job categories
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