Available for opportunities

I build scalable backend systems & modern web apps.

Full stack engineer focused on APIs, cloud debugging, and reliable delivery. I write code that teams can trust and recruiters can evaluate fast.

Sufi Afifi

Kuala Lumpur, Malaysia

Backend

Java, Spring Boot, GCP

Frontend

React, Next.js, TS

Research

Published chapter

Focus

APIs, debugging, UX

Why this portfolio

Traced payment issues with GCP logs, correlation IDs, and backend traces.

Built APIs, UI components, and integrated systems end to end.

Book chapter on AI malware detection using neural networks.

Astro, Tailwind, React, Next.js, TypeScript, cloud tooling.

Featured Work

Investigated missing financial transactions by tracing logs across distributed systems and backend services.

Built a responsive dashboard integrated with backend APIs for real-time data visibility.

Published research on neural network-based malware detection using binary data analysis.

Experience

DataKraf Sdn. Bhd. · 05/2025 – Present

Built backend REST APIs using Java and Spring Boot for fintech payment flows.
Investigated production payment issues using GCP Logging and transaction correlation.
Supported SIT/UAT cycles and documented debugging procedures for the team.

BJAK Sdn. Bhd. · 10/2024 – 05/2025

Built frontend features with React and integrated them with backend REST APIs.
Worked in Agile sprints, participated in code reviews, and shipped incremental releases.
Improved codebase maintainability by refactoring legacy modules and fixing bugs.

Tech Stack