Performance Improvement01 / 05
20%
Faster data processing via ORM profiling and query optimization
Muhammad Gilang MurdiyantoBackend Developer · TypeScript · NestJS · Node.js
I build backends millions of people rely on.
About
Backend developer with 4+ years across IT support and software engineering, shipping production systems used by millions. Currently at CODE.ID owning the REST APIs powering MyTelkomsel— one of Indonesia's largest telco super apps — with full responsibility over reliability, API contracts, and performance. Delivered the last 2 sprints with zero backend defects.
Previously cut data processing time by ~20% through ORM profiling and query optimization, and engineered a centralized platform integrating 4 communication channels including Asterisk PBX and WhatsApp Business API. Beyond application code, I run and maintain a self-hosted infrastructure stack — Proxmox virtualization, containerized services, zero-trust networking — because understanding what my code runs on makes me a better engineer, not just a better coder.
- Location
- Jakarta, Indonesia
- Currently
- Back End Developer at CODE.ID
Impact
Zero-Defect Sprints02 / 05
2
Consecutive sprints delivered with 0 backend defects
Critical Domain Owned03 / 05
1
Transaction & Payment (TRPY) APIs behind MyTelkomsel
Channels, One Platform04 / 05
4
Asterisk PBX, WhatsApp Business API and more, unified into a single platform
Years of Experience05 / 05
4+
From IT support to backend engineering on a telco super app
Experience
Oct 2025 – Present
Jakarta · Hybrid
CODE.IDCurrent
Back End Developer
- Own backend services and REST APIs for MyTelkomsel in the Transaction & Payment (TRPY) domain
- Scope, design, implement, and provide production support
- Strengthen reliability through robust validation and error handling
- Enforce consistent coding standards across the team
- TypeScript
- Node.js
- NestJS
- MySQL
- REST APIs
- Git
Jan – Oct 2025
Jakarta · On-site
eCentrix Solutions
Back End Developer
- Delivered TypeScript/NestJS backends for AI & data products
- Improved processing time by ~20% via profiling and Sequelize ORM optimization
- Engineered a centralized channel-integration platform aggregating 4 sources
- Integrated Asterisk 16 PBX and Meta WhatsApp Business API
- TypeScript
- NestJS
- Node.js
- Sequelize
- MySQL
- Asterisk PBX
- WhatsApp API
Jun 2023 – Jan 2025
Jakarta · On-site
eCentrix Solutions
Web Developer
- Built full-stack web apps with PHP/CodeIgniter 3
- Optimized MySQL performance through indexes and query tuning
- Delivered features end-to-end and maintained service quality on Apache/Nginx
- PHP
- CodeIgniter 3
- MySQL
- RESTful APIs
- JavaScript
- jQuery
Jan 2022 – Mar 2023
On-site
Interskala Mandiri Indonesia
IT Support Specialist
- Network maintenance and troubleshooting
- MikroTik configuration
- Hardware and software support
- Networking
- MikroTik
- IT Support
Projects
MyTelkomsel Backend Services
WorkREST API services powering one of Indonesia's largest telco super apps. Focus on reliability, validation, and consistent API contracts.
- TypeScript
- NestJS
- MySQL
- REST API
Centralized Channel Integration Platform
WorkUnified platform aggregating 4 communication channels — WhatsApp, voice (PBX), and more — into a single backend system.
- NestJS
- Asterisk PBX
- WhatsApp API
- MySQL
AI & Data Product Backend
WorkHigh-performance backend for AI-driven data products. Achieved ~20% processing time improvement via ORM optimization and profiling.
- TypeScript
- NestJS
- Sequelize
- MySQL
Kasir Digital — SaaS POS for UMKM
Multi-tenant SaaS point-of-sale for Indonesian small businesses. Supports multi-outlet, inventory, QRIS/Midtrans payments, staff RBAC, PDF reports, and a hidden super-admin panel. Three subscription tiers with 14-day trial.
- NestJS
- Next.js
- Prisma
- PostgreSQL
- Redis
- Midtrans
Kedai SimpTeng — Restaurant Website
Branding and showcase website for a Padang restaurant chain with 3 branches in East Jakarta. Features menu browsing with category filters, GoFood/ShopeeFood/GrabFood order integration, and embedded Google Maps per branch.
- Next.js
- TypeScript
- Tailwind CSS
Intekmas — Company Profile
Company profile website for Intekmas, built to establish their digital presence and showcase their business identity.
- Web
- Company Profile
Private Life of Us
A personal love website gifted to my partner as a birthday surprise — a private digital keepsake built with care. Grew into a small ecosystem with its own landing/chooser page and a companion shared cashflow tracker for the two of us.
- Personal
- Web
Property Rental Manager
An installable PWA for the family business — manages tenants, leases, billing, and monitoring across rented houses, boarding rooms, shops, and warehouses, with offline fallback for on-site use.
- Next.js
- TypeScript
- PostgreSQL
- Prisma
- PWA
Family Cashflow Tracker
A shared finance tracker built to keep family income, expenses, and budgeting visible and organized in one place.
- Next.js
- TypeScript
- PostgreSQL
Hutang Piutang — Debt & Receivables Tracker
A lightweight personal tracker for keeping informal loans between family and friends recorded and accountable.
- Next.js
- TypeScript
- PostgreSQL
Printbook — Digital Printing SaaS
Upcoming SaaS platform for digital printing businesses still running on manual workflows. Designed to digitize order management, production tracking, and customer communication in one system.
- SaaS
- NestJS
- Next.js
- In Progress
Self-Hosted Cloud Infrastructure Platform
A home-lab cloud platform built on Proxmox VE — isolated VMs/LXCs running TrueNAS/ZFS storage, containerized self-hosted apps behind a Caddy reverse proxy, and zero-trust remote access via Tailscale and Cloudflare Tunnel with no inbound ports exposed. Includes SSH/firewall hardening and automated resource & network monitoring.
- Proxmox
- Docker
- Linux
- ZFS
- Networking
- Zero-Trust
Portfolio Website
This portfolio — built with Next.js, TypeScript, GSAP, Lenis and Tailwind CSS. Editorial layout with a sticky sidebar, an aurora background, scroll-driven reveals and a full Reduce Motion fallback.
- Next.js
- TypeScript
- GSAP
- Lenis
- Tailwind
↗ Repo● You're here
Stack
Languages
- TypeScript
- JavaScript
- PHP
- Node.js
Frameworks
- Next.js
- NestJS
- CodeIgniter
- React
- Vue.js
Databases
- MySQL
- Redis
- Firebase
- Sequelize
Infrastructure
- Docker
- Nginx
- Git
Integrations
- WhatsApp API
- Asterisk PBX
AI tooling
- Claude
- GitHub Copilot
- Cursor
- Perplexity
- Windsurf
Have a backend project or role in mind?
Let's talk
Open to backend roles and interesting projects. Email me or send a message below.