Software Engineer

Delta Rahmat Fajar Delviansyah

Tech Enthusiast | Mobile Developer | Lifelong Learner

Passionate Software Engineer specializing primarily in native Android and iOS development, backed by practical experience in Flutter. Currently building enterprise ERP solutions at Unit4, I thrive at the intersection of development and security. I am deeply experienced across the mobile stack—from designing clean architectures and robust CI/CD pipelines to conducting advanced mobile penetration testing.

01 —

EXPERIENCE

Software Engineer · Unit4

Full-time · Remote · Apr 2023 – Present · 3 yrs 2 mos

Develop and maintain Unit4 ERP mobile apps and web services across multiple ERP modules — native Android and iOS, covering feature work, bug fixing, API integration, app stability, error handling, mobile security, and UX.
Work with .NET/C# web services, SOAP, Swagger, and Firebase, ensuring mobile features integrate cleanly with the Unit4 ERP ecosystem.
Maintain CI/CD pipelines on Azure DevOps and support TDD, unit testing, and SonarQube code-quality checks.
Collaborate with cross-functional teams to investigate issues and ship reliable improvements; contributed Selenium UI tests for a new web feature outside the core mobile scope.

Kotlin
Swift
Objective-C
C# / .NET
SOAP / Swagger
Azure DevOps
CI/CD
SonarQube
Firebase
Selenium

Associate Engineer · Unit4

Full-time · Remote · Dec 2021 – Apr 2023 · 1 yr 4 mos

Supported development and maintenance of Unit4 ERP mobile apps and web services across multiple ERP modules.
Contributed to native Android & iOS development, API integration, SOAP-based service communication, bug fixing, and improvements to stability and error handling.
Worked with .NET/C# web services, Swagger, Firebase, Azure DevOps CI/CD pipelines, unit tests, TDD, and SonarQube checks.

Kotlin
Swift
C# / .NET
SOAP / Swagger
Azure DevOps
TDD
SonarQube
Firebase

Mobile Developer · PT Periplus Bookindo

Freelance · Remote · Dec 2019 – Oct 2022 · 2 yrs 10 mos

Continued the Periplus mobile app after the internship — maintained the app, shipped new features, fixed issues, and deployed updates to the App Store.
During the pandemic, built an Android and web-based employee-attendance tool using OpenCart CMS, delivered on a short timeline as a focused internal tool.

Java
Kotlin
Swift
OpenCart
App Store

Mobile Developer · PT Periplus Bookindo

Internship · Jakarta · Jul 2019 – Nov 2019 · 4 mos

Developed the Periplus mobile app for iOS and Android. Started on iOS, then took on the Android version after delivering the iOS work early.
iOS: built with Swift and some Objective-C in Xcode, stabilizing the app for its first App Store release.
Android: built with Java in Android Studio — fixed bugs, improved stability, and prepared the app for Google Play.

Swift
Objective-C
Java
Xcode
Android Studio

02 —

PROJECTS

DeltaGames — Android
Featured

Solo developer

Game-discovery app on the RAWG API with Kotlin and Clean Architecture. Multi-module build with SQLCipher encryption, certificate pinning, dynamic feature modules, and a full CI/CD pipeline.
- Kotlin
- Clean Architecture
- SQLCipher
- CI/CD
- Android Native
- Unit Tests
- Android
View on GitHub ↗
DeltaGames — iOS
Featured

Solo developer

Modular SwiftUI app for discovering games from the RAWG API — search, detail, favorites, and profile flows backed by clean architecture, unit tests, and continuous integration.
- Swift
- SwiftUI
- Clean Architecture
- Unit Tests
- iOS
- iOS Native
- CI/CD
View on GitHub ↗
DeltaFood
Featured

Solo developer

DeltaFood is a premium Flutter culinary discovery app built with Clean Architecture. It features dynamic Material 3 theming, adaptive Grid/List layouts, gorgeous parallax Hero animations, and a seamless review system powered by the Dicoding API. A perfect showcase of stunning UI/UX and scalable code.
- Flutter
- Dart
- Android
- iOS
- Clean Architecture
View on GitHub ↗
Bitcoin Forecasting

Solo developer

Deep-learning model for multivariate Bitcoin time-series forecasting using custom Seq2Seq and LSTM architectures. Final submission for Dicoding's Advanced Deep Learning course.
- Python
- TensorFlow
- LSTM
- Seq2Seq
- Jupyter
View Project ↗
BRInesia Test

Solo developer

iOS-native technical assessment implementing Fibonacci, anagram, and permutation algorithms in Swift.
- Swift
- Algorithms
- Xcode
View Project ↗

See all repositories on GitHub ↗

03 —

SKILLS

Mobile Development

iOS Native
Android Native
Flutter

Programming Languages

Java
Kotlin
Objective-C
Swift
Dart
C#

Tools & Platforms

Android Studio
Xcode
Visual Studio
VSCode
Git
Postman
SoapUI
Firebase
Azure DevOps

Other Competencies

DevOps
Penetration Testing
Machine Learning
UI/UX Design
C# / .NET
SOAP / Swagger
CI/CD
SonarQube
Selenium
Clean Architecture
SQLCipher
SwiftUI
Unit Tests
Automation
Scripting
TDD
OpenCart
App Store
Android
iOS
Python
TensorFlow
LSTM
Seq2Seq
Jupyter

04 —

CERTIFICATIONS

14 total

Mobile Application Penetration Tester (eMAPT)

Featured

INE

No Expiration

Penetration Testing
Android
Mobile Security

Become an iOS Developer Expert

Featured

Dicoding Indonesia

May 2029

iOS Native
Swift
Clean Architecture
CI/CD

Become an Android Developer Expert

Featured

Dicoding Indonesia

May 2029

Android Native
Kotlin
Clean Architecture

Become a Flutter Developer Expert

Featured

Dicoding Indonesia

Dec 2028

Flutter
Dart
Android
iOS

Cisco Certified DevNet Associate

Featured

Cisco

Jun 2027

DevOps
CI/CD
APIs
Python
Automation

Building Advanced Deep Learning Projects

Dicoding Indonesia

May 2029

Deep Learning
Machine Learning

Learn AI Basics

Dicoding Indonesia

Oct 2028

Artificial Intelligence
Machine Learning

Learn Machine Learning for Beginners

Dicoding Indonesia

Oct 2028

Machine Learning
Data Science

Learn to Make Flutter Apps for Beginners

Dicoding Indonesia

Dec 2026

Learn to Build Microservices Architecture

Dicoding Indonesia

Nov 2026

Microservices
Docker
Kubernetes
RabbitMQ

Android Frida Labs (Certificate of Completion)

Mobile Hacking Lab

No Expiration

Frida
Android
Mobile Security

CCNA: Introduction to Networks

Cisco

No Expiration

CyberOps Associate

Cisco

No Expiration

DevNet Associate

Cisco

No Expiration

DevOps
CI/CD
APIs
Python
Automation

05 —

AWARDS

Competition Results

2025
1st Place
1st Winner — Coding4U Competition

Unit4 · Chromia Team
2021
Finalist
Finalist — Network & Security, KMIPN 3

Politeknik Negeri Malang · Panda Team
2019
Finalist
Finalist — Network & Security, KMIPN

Politeknik Caltex Riau · Residivis Team
2018
Finalist
Finalist — Network & Security, KMIPN

Politeknik Elektronika Negeri Surabaya · Residivis Team
2018
Honoree
Ranked 23rd — Indonesia National Contest (INC)

BINUS University · Panda Team
2017
1st Place
1st Winner — Kompetisi Pemrograman (Tisigram)

Politeknik Negeri Bandung · Individual

06 —

EDUCATION

Bachelor of Applied Science (BASc) · Informatics Engineering

Politeknik Negeri Bandung

2016–2021 · GPA: 3.58 out of 4.00

Scholarships & Academic Honors

Peningkatan Prestasi Akademik (PPA) Scholarship Politeknik Negeri Bandung · 3 consecutive years (2017/2018, 2018/2019, 2019/2020)

07 —

ORGANIZATIONS

Ministry of Technology & Information — Expert Staff

Ikatan Alumni POLBAN (Politeknik ITB)

Dec 2021 – Mar 2026

Head of Encode Network & Security

Himpunan Mahasiswa Komputer, POLBAN

Aug 2017 – Jul 2018

Communication & Information Department Staff

Himpunan Mahasiswa Komputer, POLBAN

Jan 2016 – Jan 2017

08 —

Delta Rahmat Fajar Delviansyah

Tech Enthusiast | Mobile Developer | Lifelong Learner

EXPERIENCE

Software Engineer · Unit4

Associate Engineer · Unit4

Mobile Developer · PT Periplus Bookindo

Mobile Developer · PT Periplus Bookindo

PROJECTS

DeltaGames — Android

DeltaGames — iOS

DeltaFood

Bitcoin Forecasting

BRInesia Test

SKILLS

Mobile Development

Programming Languages

Tools & Platforms

Other Competencies

CERTIFICATIONS

Mobile Application Penetration Tester (eMAPT)

Become an iOS Developer Expert

Become an Android Developer Expert

Become a Flutter Developer Expert

Cisco Certified DevNet Associate

Building Advanced Deep Learning Projects

Learn AI Basics

Learn Machine Learning for Beginners

Learn to Make Flutter Apps for Beginners

Learn to Build Microservices Architecture

Android Frida Labs (Certificate of Completion)

CCNA: Introduction to Networks

CyberOps Associate

DevNet Associate

AWARDS

Competition Results

EDUCATION

Scholarships & Academic Honors

ORGANIZATIONS

Ministry of Technology & Information — Expert Staff

Head of Encode Network & Security

Communication & Information Department Staff

CONTACT