Hi, I'm Rumi

Backend &
Full-Stack
Developer

Informatics Engineering student at Padjadjaran University. I turn coffee into code — with a focus on scalable backend systems.

Node.jsNode.js
TypeScriptTypeScript
JavaScriptJavaScript
PythonPython
FastAPIFastAPI
NestJSNestJS
ReactReact
GraphQLGraphQL
PostgreSQLPostgreSQL
MySQLMySQL
DockerDocker
Google CloudGoogle Cloud
GitGit
HTML5HTML5
CSS3CSS3
TailwindCSSTailwindCSS
About & Capabilities

Technical Focus

Computer Science graduate at Padjadjaran University specializing in scalable backend systems, RESTful API architecture, and cloud infrastructure. Experienced in managing relational database systems, implementing microservices, and leveraging AI agentic workflows to accelerate the delivery of robust, production-grade software.

Languages & Frameworks

JavaScriptTypeScriptPythonNode.jsExpress.jsNestJsFastAPIReact.jsGraphQLHTML5/CSS3

Databases & Cloud

MySQLPostgreSQLGoogle Cloud (GCP)Cloud RunCloud SQLRESTful API

Tools & DevOps

Git & GitHubDockerCI/CD WorkflowsJest (Unit Testing)NPM Ecosystem

AI & Productivity

AI Coding Agents (Antigravity/Cursor)Model Context Protocol (MCP)Agentic Workflows

Portfolio

Projects & Systems

A curated selection of software engineering projects, backend architectures, machine learning research, and internal systems.

Undergraduate Thesis

HRV-Labs

Deep Learning & DSP Researcher

Undergraduate thesis research classifying cognitive load levels from physiological heart rate signals (ECG & PPG) using a hybrid CNN-LSTM architecture, featuring an interactive Flask analytics dashboard.

Python 3.13TensorFlowCNN-LSTMFlaskDSP / Sensors
Repository
Live Production

Himatif Apps V2

Backend Developer & Maintainer

Official web platform for the Padjadjaran University Informatics Engineering Student Association. Engineered core backend services and managed MySQL database architecture for hundreds of active students.

Express.jsReact.jsMySQLREST API
Live Demo
Full-Stack System

Becycle — Waste Exchange

Full-Stack Developer

Collaborative waste management and recyclable materials exchange platform. Integrated an interactive React frontend with dual microservice backends built on Express.js and Flask.

React.jsExpress.jsFlaskTailwindCSS
FrontendBackend
Full-Stack System

Wawacan Digital

Full-Stack Developer

Historical Sundanese Wawacan manuscript preservation and semantic reading platform. Powered by a high-efficiency FastAPI search & pagination backend and a responsive SvelteKit interface.

FastAPIPythonSvelteKitREST API
FrontendBackend
Backend API

Codetid API

Cloud & Backend Developer

Scalable RESTful API for Bangkit Capstone mobile application, architected with containerized microservices deployed on Google Cloud Platform (Cloud Run & Cloud SQL).

Express.jsFastAPIGoogle Cloud PlatformCloud SQL
Repository
Live Portal

KEPO 2024 Portal

Web Developer

Lightweight and high-speed static event portal for the KEPO 2024 informatics orientation program, optimized for fast mobile accessibility.

JavaScriptHTML5CSS3
Live DemoRepository
Internal System

Ngatour by MMU (Prototype)

Web Developer Intern

Automated mass travel booking web prototype featuring SheetJS Excel parsing and validation, Maker-Approver authorization workflow, and simulated faculty e-wallet budget tracking.

JavaScriptSheetJSMPA ArchitecturePT Mahat Masagi Unpad
Internal System (PT MMU)
Explore more repositories on

My journey

Experience

IT Support Intern (Web Developer)

Dec 2025 – Feb 2026

PT Mahat Masagi Unpad Holding

Bandung, Indonesia
  • Engineered a web-based prototype, "Ngatour by MMU", using HTML, CSS, and JavaScript with a Multi-Page Application architecture to automate mass travel ticket bookings.
  • Implemented an automated Excel data parsing and validation feature utilizing SheetJS, significantly reducing manual data entry errors for mass participant processing.
  • Designed a Maker-Approver authorization workflow and integrated a simulated e-wallet dashboard to monitor budget allocations and expenditures across university faculties.

Backend Developer (Freelance)

Feb 2025 – Nov 2025

Himatif Apps | Informatics Engineering Student Association UNPAD

Sumedang, Indonesia
  • Engineered RESTful API endpoints and maintained core backend services for the official student association website, ensuring high availability for hundreds of active students.
  • Managed MySQL database architecture by executing schema updates and routine backups to preserve data integrity and optimize system performance.

Laboratory Teaching Assistant

Feb 2024 – Jul 2026

Padjadjaran University

Sumedang, Indonesia
  • Mentored and instructed over 50+ students in fundamental Object-Oriented Programming concepts through engaging weekly lectures.
  • Designed and delivered a 2-hour weekly practical lecture, translating complex theories into hands-on programming exercises.
  • Evaluated and provided constructive feedback on weekly assignments to reinforce learning objectives and improve student code quality.

Cloud Computing Cohort

Sep 2024 – Dec 2024

Bangkit Academy led by Google, Tokopedia, Gojek, & Traveloka

Bandung, Indonesia
  • Architected and deployed a scalable backend API using Go and PostgreSQL on Google Cloud Platform (Cloud Run, Cloud SQL) for a cross-functional capstone project.
  • Applied containerization and CI/CD principles to streamline deployment workflows, validating expertise through the completion of 40+ technical labs on Google Cloud infrastructure.

Let's talk

Contact

I'm currently open to new opportunities. Have a question or a project in mind? Feel free to reach out!

📍 Location:Jakarta, Indonesia
📧 Email:rumirifai96@gmail.com
Download CV