Hello, I'm Rafiano!

Rafiano serves as a Consultant, Developer, specializing in designing and building scalable backend systems. Passionate about leveraging modern cloud infrastructure and distributed systems to solve complex client challenges.

Rafiano focused on the end-to-end design and implementation of highly scalable, cloud-native distributed systems for enterprise clients. He drove technical excellence by architecting resilient backend microservices, optimizing complex data flows, and establishing robust integration patterns. Operating as a technical anchor, he effectively bridged the gap between product requirements and engineering execution in agile, multi-vendor environments. Furthermore, he actively elevated team performance and engineering standards by championing Test-Driven Development (TDD), enforcing Clean Code principles, and mentoring fellow engineers through led technical sharing sessions.

Assigned to global investment banking operations, Rafiano engineered resilient data ingestion pipelines using Kafka and Apache Spark to guarantee zero-data-loss for high-throughput billing and reporting event streams. He built core components for the bank's global ISO 20022 payments transition, strictly adhering to regulatory performance standards and maintaining exact-once processing. Applying rigorous TDD and BDD methodologies with JUnit and Cucumber, he ensured maximum system reliability in a heavily regulated financial environment while migrating legacy payment modules to modern microservices via GitLab CI.

Promoted to Senior Software Engineer, Rafiano led a cross-functional team of 7 to architect and deploy the Fault Detection and Diagnostics (FDD) system, transforming complex IoT telemetry into actionable energy-saving insights for enterprise dashboards. He diagnosed critical bottlenecks in legacy monolithic data pipelines and led a successful migration to an Event-Driven Architecture (EDA) using Apache Kafka. Additionally, he translated complex data science models into production-ready Java and Python code for real-time anomaly detection, established the L1-L3 incident response framework for global property portfolios, and designed systems that directly contributed to the company’s headquarters achieving the BCA Green Mark certification in Singapore.

Rafiano focused on backend development and system integration for enterprise IoT platforms. He developed and maintained secure, high-performance RESTful APIs to deliver real-time analytics to frontend micro-frontends. He collaborated closely with engineering teams to build foundational microservices and data pipelines supporting large-scale smart building management.

Developed backend services and scaled APIs for high-traffic seasonal features, including the LINE Ramadan campaign, supporting millions of concurrent users.

Maintained and optimized advertising features and payment reconciliation systems while working across the Payment, SEO, and Promotion teams.

Prototyped and built a logistics recommendation and delivery scheduling system to support operations within the logistics team.