Hi, I’m Jansen Castillo, a software engineer with 2+ years of experience building features across mobile, web, and backend systems. I contribute to fintech and enterprise product development from API design to frontend implementation, owning end-to-end features with maintainable code and test-driven development. I enjoy collaborating with backend engineers, designers, and PMs, and I’m comfortable across the stack with Swift, Kotlin, Angular, React Native, Vue.js, Spring Boot, Node.js, RESTful APIs, and modern CI/CD tooling. I also work with iOS, Android, Docker, and related DevOps practices to deliver reliable production systems. I’m excited about fintech, crypto, and data-driven apps, and I have hands-on project experience including a real-time crypto tracker app, a crypto wallet/transaction feature, and a decentralized LP-farming DApp. I share code on GitHub and love learning new tech and improving the developer experience.…Hi, I’m Jansen Castillo, a software engineer with 2+ years of experience building features across mobile, web, and backend systems. I contribute to fintech and enterprise product development from API design to frontend implementation, owning end-to-end features with maintainable code and test-driven development. I enjoy collaborating with backend engineers, designers, and PMs, and I’m comfortable across the stack with Swift, Kotlin, Angular, React Native, Vue.js, Spring Boot, Node.js, RESTful APIs, and modern CI/CD tooling. I also work with iOS, Android, Docker, and related DevOps practices to deliver reliable production systems. I’m excited about fintech, crypto, and data-driven apps, and I have hands-on project experience including a real-time crypto tracker app, a crypto wallet/transaction feature, and a decentralized LP-farming DApp. I share code on GitHub and love learning new tech and improving the developer experience.WWWW…