I'm a backend developer with 2+ years of experience building secure, high-throughput payment gateway systems — spanning iframe & hosted-paypage integrations, wallet processing, and PCI-DSS compliant transaction flows across merchant-facing payment channels.
My work sits mostly at the security and reliability layer of payment infrastructure:
- 🛡️ Designing real-time, rule-based fraud detection engines that flag and block suspicious transactions before they're processed
- 🔐 Securing payment payloads with HMAC authentication, AES-256, and RSA encryption
- ⚙️ Scaling configuration systems — from file-based YAML with hot-reload, to distributed caching (Infinispan) with MariaDB persistence — as transaction volume grows
- 🧩 Leading JDK upgrades and deploying backend services on Payara Server (Jakarta EE) with a focus on TPS throughput and production stability
I care about building systems that are secure and boring in the best way — predictable, observable, and hard to break.
Languages
Backend & Frameworks
Security & Payments
Data & Caching
Tools
Always happy to talk backend architecture, fraud detection, encryption, or payment compliance patterns.