Irfan Kurniawan
Jakarta, Indonesia
Software Engineer with 4+ years of experience architecting and delivering scalable enterprise systems for Indonesia's leading banking institutions. Specialist in zero-downtime microservices migrations, high-throughput data pipelines, and real-time streaming architectures. Proven track record of reducing operational timelines by orders of magnitude through modern engineering practices.
Professional Experience
Enterprise systems architecture and zero-downtime modernisation across leading banking institutions.
Software Engineer
March 2025 – PresentEmbedded engineering contributor at Bank SMBC Indonesia Tbk., driving a large-scale Collateral Management Document System modernisation across 23 interconnected microservices, building a real-time RFID inventory tracking system, and delivering an automated seat booking platform.
- Led the migration of 23 microservices from Java 8/Spring Boot 2.x to Java 21/Spring Boot 3.x, achieving full backward compatibility and zero downtime.
- Migrated frontend from Angular 12 to Angular 20, adopting standalone components and the new control flow syntax.
- Engineered a rollover strategy for 20M+ MySQL rows from version 5.7 to 8.0, including query re-optimisation and index tuning for a 40% read performance improvement.
- Established a phased blue-green deployment pipeline reducing deployment risk and enabling seamless rollback.
- Architected a WebSocket-based real-time streaming pipeline for RFID handheld scanners, pushing live inventory events to the central system.
- Implemented Redis in-memory caching layer to handle burst scan events and eliminate duplicate processing.
- Reduced stock audit cycle from approximately 3 months to approximately 2 weeks — an 83% cycle-time reduction.
- Designed and built a real-time seat availability engine with conflict detection and automated scheduling, replacing a manual email-based process.
- Reduced meeting/workspace reservation turnaround from days to seconds, adopted bank-wide.
Featured Systems
Mission-critical platforms delivered and maintained in active banking production.
Collateral Management Document System
Enterprise-scale document management platform handling collateral records for Indonesia's banking operations, requiring a comprehensive modernisation across 23 microservices.
- Migrated 23 microservices: Java 8 → Java 21, Spring Boot 2.x → 3.x
- Frontend migration from Angular 12 → Angular 20 with standalone components
- Rolled over 20M+ MySQL records from v5.7 to v8.0 with zero data loss
- 40% improvement in read query performance post-optimisation
- Blue-green deployment pipeline for zero-downtime releases
Handheld RFID Real-Time Tracking
Real-time inventory tracking system using RFID handheld scanners with WebSocket streaming and Redis caching, transforming a quarterly manual stock-take into a continuous, near-instant process.
- WebSocket pipeline streaming real-time RFID scan events to the central system
- Redis in-memory cache layer for burst event handling and deduplication
- Reduced stock audit cycle from ~3 months to ~2 weeks (83% faster)
- Mobile-responsive operator dashboard for live tracking status
SEIRI Booking Management System
Automated seat and meeting-room scheduling system with real-time availability engine, replacing a manual email-based process that took days with an instant, self-service experience.
- Real-time availability engine with conflict detection
- Automated scheduling and confirmation workflows
- Bank-wide rollout, reducing reservation cycle from days to seconds
- Notifications, cancellations, and audit trail built-in
Archive Report Management System (ARMS)
Large-scale legacy modernisation of the bank's document box management platform, performing a zero-downtime tech refresh across 15+ microservices.
- 15+ microservices upgraded from Spring Boot 1.x to 2.x
- Angular frontend migrated from v7 to v12
- 30% memory footprint reduction through service refactoring
- Zero-downtime cutover strategy with feature-flag-gated rollout
Published Projects
Open source libraries and developer tooling published for the global community.
@kuradev/ng-sidebar
An Angular sidebar component library providing a flexible, animated side navigation panel for Angular applications. Built as a modern, maintained alternative with full Angular compatibility.
Angular Vitest Runner
VS Code extension that lets you run and debug Angular Vitest tests directly from the VS Code Test Explorer using the Angular CLI — zero extra config needed.
Technical Competencies
Full-stack enterprise engineering across high-throughput distributed backends, databases, and modern frontends.
Backend & Distributed Systems
Database & Data Engineering
Frontend & Mobile
Practices & Tooling
Education & Languages
Academic Degree
Bachelor of Computer Science
Languages
Get in Touch
Open to senior software engineering, distributed systems, and banking technology roles. Let's discuss how I can contribute to your team.