Sinar Setyawan

Meet Sinar

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Fullstack engineer with 8+ years building banking and fintech systems: payment integrations (ISO 8583, VA, QRIS), core banking and credit platforms. Founder of Garasin, a SaaS for auto repair workshops (web + Flutter app). I work with Golang, Spring Boot, React and Flutter, and load test APIs before launch. Send me your project and I'll reply with an approach, timeline and estimate.