Ridwan Rais Firdaus
Backend Engineer Specializing in High-Performance & Secure Systems
Experience
4+ Years
Core Stack
Go, Node.js, TS, PostgreSQL
Key Strengths
APIs, Distributed Systems, DBs
Infra / DevOps
Terraform, CI/CD
About
I build backend systems that are designed to survive real-world load—failures, spikes, and everything in between.
I focus on distributed, event-driven architectures (Kafka, AWS, Terraform), with experience spanning fintech, payment systems, and integrating AI models into practical applications.
I care about systems that are simple, reliable, and predictable in production.
System Architecture / Case Studies
Self-Hosted Payment Gateway (PCI DSS & GDPR)
Architected a highly secure, self-hosted payment orchestrator to maintain data sovereignty and multi-processor routing.
Asynchronous Ticket Generation Engine
Architected a Kafka-driven system to handle mass ticket generation asynchronously, ensuring low-latency event creation for organizers.
Projects
Receipt Scanner & OCR Pipeline
Live DemoA receipt scanning pipeline powered by an open-source Qwen model (also supports custom MLX OCR). Features analytical dashboards and historical scan tracking to help users gather deeper insights from their spending receipts.Experience
Back End Developer @ EventCHI
Sep 2024 - PresentEngineering high-performance, PCI-compliant payment orchestration systems. Implementing secure data encryption flows using GCP KMS and contributing to the global open-source payment ecosystem (Hyperswitch). Architects scalable backend services using Rust and TypeScript.
Full-stack Developer @ Moladin
Jan 2024 - Sep 2024Built and optimized core fintech API services for a major automotive platform. Scaled internal dealer-facing tools and financial processing engines using NestJS and unified TypeScript architecture.
Back End Developer @ Moladin
Apr 2023 - Dec 2023Developed critical backend integrations for the business workflow automation suite. Leveraged Yellow AI and PandaDoc for real-time document processing and AI-driven automated communication flows.
Software Engineer @ OKANEMO
Nov 2022 - Mar 2023Engineered backend components for a fintech solution, focusing on reliable data ingestion and API infrastructure consistency.
Software Engineer @ Refactory
Jul 2022 - Oct 2022Delivered industrial-grade software components through rigorous backend engineering and system integration tasks.
Let's Connect
I'm currently open for new opportunities. Whether you have a question or just want to say hi, I'll try my best to get back to you!