2023 to now
Enterprise Banking Platform
A microservices platform for core banking and payment operations at a national bank, built for high availability and secure transaction handling.
JavaSpring BootPostgreSQLRedisDockerOAuth2
Engineer. Builder. Educator.
Building systems.
Sharing knowledge.
Backend engineer focused on Java, Spring Boot, distributed systems, and building reliable enterprise software.
JavaSpring BootMicroservicesPostgreSQLRedisSystem Design
Engineering with purpose.
I am a backend engineer who enjoys turning complex business requirements into simple, reliable, and maintainable software. Most of my work sits in banking and payments, where being correct matters more than being clever.
Read my backgroundBackend EngineeringMicroservicesAPI DesignDatabase ArchitectureCachingMessagingAuthentication and AuthorizationSystem Design
Learn from real engineering experience.
Practical courses on building backend systems, not on syntax. Written by a working backend engineer who has taught Java and Spring Boot to developers as a corporate trainer.
Your path to becoming a better backend engineer.
The order I would learn these in. Courses are being released along this path.
- 01Java Fundamentals
- 02Spring Boot
- 03REST API Design
- 04Database and PostgreSQL
- 05Redis and Caching
- 06Microservices
- 07Messaging
- 08System Design
- 09Production-Ready Backend
Built in the real world.
Systems running in production at banks and enterprise clients.
2019 to 2020
Credit Card Management System
A credit card management system covering the card lifecycle, built to the bank's internal security standards.
JavaSpring BootREST APISQL Server
2019 to 2023
Dealer Management System
A dealer management system handling operations and data across a national dealer network.
JavaSpring BootREST APIOracle Database
Experience
2023 to now
Backend Engineer
PT Infosys Solusi Terpadu
Core banking and electronic payment microservices, with Kafka handling asynchronous transaction reconciliation and OAuth2 securing service-to-service calls.
JavaSpring BootPostgreSQLKafka2019 to 2023
Java and Spring Boot Trainer
Corporate training
Taught Java and Spring Boot to working developers. This is where the material behind these courses was first tested on a real audience.
JavaSpring Boot2019 to 2023
Backend Developer
PT Mitra Integrasi Informatika
Enterprise systems for banking, logistics, and manufacturing clients, including a credit card management system for a national bank.
JavaSpring BootREST APISQL Server2019 to 2020
Frontend Developer
Bank Negara Indonesia
Internal and customer-facing banking interfaces built against the bank's web security requirements, including XSS and CSRF mitigation.
JavaScriptREST API
How I think about engineering.
- 01Keep it simple
- Complexity should be intentional, not accidental.
- 02Build for reality
- Software should solve real problems, not just pass technical demos.
- 03Keep learning
- Technology evolves. Good engineers evolve with it.