Hello, I’m
Irfandio Daffa Agustantio
Backend Software Engineer.
I build scalable, reliable, and maintainable backend systems — from enterprise platforms to SaaS products.
0.0+
Years of experience
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Companies worked with
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Technologies in daily use
Backend first. Reliability always.
Backend Software Engineer with a strong passion for building scalable, reliable, and maintainable backend systems. Experienced in developing enterprise and SaaS applications using Java Spring Boot, Node.js, and Go, with a focus on designing RESTful APIs, implementing microservices, and delivering high-performance backend solutions.
I also have experience in Android development with Kotlin, including integrating WebView-based micro frontends into mobile applications. While I have worked across both backend and mobile development, my primary focus is backend engineering, where I enjoy solving complex technical challenges, improving system performance, and building software that is secure, scalable, and aligned with industry best practices.
Experience
Six years across enterprise finance systems, SaaS platforms, and mobile — with backend engineering at the core. Tap a role to expand it.
- Develop and maintain core backend utilities and shared services using Go.
- Build reusable helper services consumed by multiple product teams.
- Improve backend architecture, scalability, and maintainability.
- Troubleshoot cross-service issues and optimize backend performance.
- Participate in architectural discussions and backend engineering best practices.
- Developed enterprise Master Data and Reporting Systems using Java Spring Boot and JPA.
- Built RESTful APIs using Software AG WebMethods.
- Developed backend services for Excel processing using Apache POI.
- Implemented data streaming solutions with Apache Kafka.
- Developed backend services using Node.js and Sequelize ORM.
- Maintained enterprise applications and supported production environments.
- Developed backend services using IBM Software AG WebMethods.
- Developed enterprise backend applications using Java Spring Boot.
- Built Android applications using Kotlin with Micro Frontend architecture.
- Developed custom camera features for Android applications.
- Performed System Integration Testing (SIT) and built ETL processes using Pentaho.
- Maintained production systems and ensured data consistency between databases and frontend applications.
- Completed intensive Java and SQL training.
- Developed Java Spring applications as part of the bootcamp curriculum.
- Developed Android features for the Moslem Global application.
- Participated in mobile application development for Umrah services.
What I work with
Languages
The tools I think in.
- Java
- Go
- JavaScript
- TypeScript
- Kotlin
- SQL
- Python
Backend
Where I spend most of my time.
- Spring Boot
- JPA / Hibernate
- Node.js
- Sequelize ORM
- RESTful APIs
- Microservices
- Software AG WebMethods
Data & Messaging
Moving data, reliably.
- Apache Kafka
- Pentaho ETL
- Apache POI
Mobile
A useful second skill.
- Android
- Kotlin
- WebView Micro Frontends
Education & beyond
2016 — 2020
Telkom University
Bachelor of Computer Engineering
GPA 3.40 / 4.00
Bronze Medal — Korea International Youth Olympiad
Best of the Best Innovation
Campus activities
Assistant Laboratory — Software Design & Analysis
Mentored students in UML, ERD, DFD, Class Diagrams, and software design. Reviewed assignments and prepared learning materials.
Assistant Laboratory — Human Resource Management
Managed recruitment processes and organized laboratory events and activities.
Study Group Laboratory
Developed Python-based projects for Excel data processing and image processing.
Languages
- Indonesian · Native
- English · Intermediate
Let’s build something reliable.
Open to backend engineering opportunities and interesting technical conversations.