Hi, I'm Erlangga Juni Saputra
Full Stack Engineer
Specializing in Scalable Backend with Go & Modern Frontend. Over 3 years of experience building high-performance web applications, IoT monitoring systems, and secure document workflows.
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I am a Full Stack Engineer entering my 4th year of professional experience in designing, building, and optimizing scalable web applications. While I am proficient across the entire development lifecycle, my core strength lies in Backend Engineering using Go (Golang) and Node.js, alongside robust infrastructure management with Docker and Linux server administration.
On the frontend, I craft highly responsive and interactive user interfaces using React, TypeScript, and modern design systems. My experience spans building enterprise-grade applications for major corporations like PT Sharp Electronics Indonesia, PT Pos Indonesia, and PT Mitsubishi Motors—ranging from high-traffic concurrent logistics systems to real-time IoT monitoring dashboards.
I am currently pursuing a Bachelor's degree in Computer Science (S1 Informatika) at Telkom University (having completed semester 5). To continuously advance my backend engineering and computer science skills, I actively learn from platforms like Dicoding Indonesia and Boot.dev, while leveraging AI-assisted tools like GitHub Copilot and Gemini to optimize my daily engineering workflows.
Quick Details & Socials
Selected Projects
A collection of enterprise-grade applications, internal tools, and scalable systems I've engineered.
Dicoding Forum App (React Expert)
Personal / DicodingA high-performance discussion forum web application built to fulfill the Dicoding React Developer Expert certification. Features global state management using Redux Toolkit, full user authentication, leaderboard scoring, multi-category filters, and automated Vercel deployment with CI/CD.
Integrated Maintenance Management System
PT Mitsubishi MotorsMonolith system decoupling for PT Mitsubishi Motors Krama Yudha Indonesia (MMKI) to resolve high-load latency. Decoupled the monorepo into 5 domain services and created a Go-based background task worker running as a Windows Service.
Receiving Management System
PT Pos IndonesiaHigh-performance logistics management system for tracking parcel sorting. Leveraged Go Goroutines to process massive real-time RFID scanning streams and used WebSockets to supply real-time dashboard state updates.
E-Document & Workflow System
PT Sharp ElectronicsDeveloped and enhanced an enterprise e-document platform. Digitized physical paper trails by integrating Go with Python OCR scripts for coordinate-based digital signing, and implemented automated keyword-based validations, verifier workflow roles, and digital stamps.
Lippo Cikarang Wastewater Treatment Plant
LippolandBuilt a reactive web frontend from scratch for a wastewater tank remote monitoring system. Features animated tank visualizations representing real-time sensor streams, OpenStreetMap integration, and historical analytics charts.
Corporate Phishing Simulation & Security Awareness Platform
PT Futaba IndustrialDeveloped a periodic phishing simulation platform. Designed a dual-app architecture: a bait app in Express.js/EJS to capture user interactions and a Go dashboard for real-time audit reports and user telemetry analysis.
Integrated Maintenance System
PT Printechnindo Raya UtamaDeveloped a specialized equipment maintenance management platform for coding and marking equipment distributors. Designed the backend as a decoupled microservices architecture with Go, integrated real-time technician chat via WebSockets, and containerized domain services using Docker.
My Tech Stack
The technologies and frameworks I leverage to engineer robust backend systems and interactive frontends.
Certificates & Credentials
Selected professional certifications and course completions verifying my technical expertise.