Hi I am Dias N. Arifin 
, Software developer focused on building practical and efficient solutions across web and mobile platforms. This site is a mix of my portfolio and blog, where I share projects, ideas, and thoughts from my journey in tech.
I work across a wide range of technologies including Java, Python, JavaScript/TypeScript, and Linux—developing web and mobile solutions. My projects often involve mixing different languages and tools, as I continuously expand my tech stack through real-world experimentation and learning.
Java (Spring Boot, Hibernate, EJB, Flowable, ActiveMQ, Apache Struts, Play Framework)
90%
Python (FastAPI, Pydantic, Langchain)
75%
Javascript (TypeScript, ReactJS, Tailwind, Zustand)
70%
NLP (RAG, Prompt engineering)
50%
PostgreSQL, MySQL, MongoDB, Qdrant, Cassandra, Elasticsearch, Redis
85%
Linux, Docker, Jenkins, Kubernetes
80%
Flutter, Android SDK, Objective-C, J2me, C, devkitPro
60%
Leading the development of enterprise supply chain finance platforms. Responsible for system architecture, technical direction, and mentoring engineering teams using Java, Spring Boot, Kafka, and microservices.
Built and maintained scalable backend systems for financial services. Developed core features, API integrations, and internal tools with Java, Flowable, and Elasticsearch in a distributed microservices environment.
Developed Android applications and contributed to the design of user interfaces and backend API consumption. Focused on delivering performant mobile experiences for enterprise clients.
Worked remotely on Android application development for a Japanese client. Responsible for implementing UI features, localization, and API integration.
Contributed to backend development of payment gateway systems. Involved in integration projects with external partners and ensuring security and reliability in transaction processing.
Delivered end-to-end software solutions using Java technologies. Engaged in both backend and frontend development, training sessions, and open-source projects under the Meruvian foundation.
Bachelor's degree in Computer Science, with a focus on software development, networking, and system analysis.
Majored in Computer, Network, and Informatics Engineering. Built foundational skills in IT infrastructure and software fundamentals.