FREELANCE · BACKEND & WEB FREELANCE · BACKEND & WEB

Backend systems built for scale,
websites built to convert. Backend systems yang siap scale,
website yang dibangun untuk convert.

I help businesses ship reliable backend foundations and lightweight websites that support growth, reduce operational friction, and stay easy to maintain over time. Saya membantu bisnis membangun fondasi backend yang andal dan website ringan yang mendukung pertumbuhan, mengurangi friction operasional, dan tetap mudah dirawat seiring waktu.

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Selected Product Work Pilihan Karya Produk

Work Karya

Selected product work across logistics, commerce, and internal operations. I care about clarity, system thinking, and interfaces that help real teams move faster. Pilihan karya produk di area logistics, commerce, dan internal operations. Saya lebih fokus pada kejelasan, system thinking, dan interface yang membantu tim benar-benar bekerja lebih cepat.

Darter.ai Darter.ai

01 / 02

Private product UI UI produk private Logistics Ops Logistics Ops Internal Dashboard Internal Dashboard Back Office Back Office

Flagship Project Project Utama

Darter.ai Darter.ai

Healthcare logistics / back-office platform Healthcare logistics / platform back-office

Back-office product surface for a live NEMT platform, spanning dispatch, vehicle, and trip-detail workflows used by operations teams every day. Permukaan produk back-office untuk platform NEMT yang berjalan live, mencakup workflow dispatch, kendaraan, dan detail trip yang dipakai tim operasional setiap hari.

Worked across dispatch, vehicle, and trip-management surfaces rather than a single isolated screen. Mengerjakan area dispatch, kendaraan, dan trip-management, bukan hanya satu layar terpisah.
Designed for fast internal decision-making: dense data, clear hierarchy, and low-friction operator workflows. Dirancang untuk pengambilan keputusan internal yang cepat: data padat, hirarki jelas, dan workflow operator yang minim gesekan.

PT. Dahana Dashboard Dahana Dashboard

01 / 02

NDA project Project NDA NDA Project Project NDA Telemetry Telemetry Operations Dashboard Operations Dashboard

PT. Dahana Dashboard Dahana Dashboard

Industrial operations / fleet intelligence Operasional industri / fleet intelligence

Fleet-intelligence product concept for operational monitoring, built around command-center visibility, unit health, and site-level scanning. Konsep produk fleet-intelligence untuk monitoring operasional, dengan fokus pada visibilitas command center, kesehatan unit, dan pemantauan lintas site.

Structured the interface around live status, uptime, and throughput instead of decorative dashboard noise. Struktur interface dibangun di atas status live, uptime, dan throughput, bukan dashboard yang sekadar ramai.
Balanced executive overview with drill-down views for operators in the field. Menjaga keseimbangan antara overview untuk level manajemen dan drill-down untuk operator lapangan.

Open demo Lihat demo

Gramedia.com Gramedia.com

01 / 02

E-commerce E-commerce Retail Retail Product Detail Product Detail

Gramedia.com Gramedia.com

E-commerce / retail bookstore E-commerce / toko buku retail

Retail bookstore experience across storefront merchandising and product-detail flows for a nationally recognized consumer brand. Pengalaman toko buku online yang mencakup storefront merchandising dan flow product detail untuk brand retail konsumen berskala nasional.

Focused on catalog discovery and promotional surfaces that keep large inventories navigable. Fokus pada discovery katalog dan surface promosi agar inventori besar tetap mudah dinavigasi.
Worked inside production-grade commerce constraints rather than a greenfield marketing mockup. Dikerjakan dalam constraint e-commerce production, bukan sekadar mockup marketing dari nol.

Open site Buka situs

Selected archive Arsip pilihan

Mitra Gramedia Mitra Gramedia

01 / 02

B2B Commerce B2B Commerce Reseller App Reseller App Mobile-first Mobile-first

Mitra Gramedia Mitra Gramedia

B2B commerce / reseller app B2B commerce / aplikasi reseller

Partner-facing reseller experience inside Gramedia’s commerce ecosystem, tuned for mobile browsing, tier visibility, and product ordering. Pengalaman reseller di ekosistem commerce Gramedia, dirancang untuk browsing mobile, visibilitas tier, dan pemesanan produk.

Built for reseller behavior: recurring browsing, quick search, and stock-sensitive product flows. Dibuat untuk perilaku reseller: browsing berulang, search cepat, dan flow produk yang sensitif terhadap stok.

Open site Buka situs

Burger King Delivery Burger King Delivery

01 / 02

Food Delivery Food Delivery Promo Engine Promo Engine Ordering UX Ordering UX

Burger King Delivery Burger King Delivery

Food delivery / online ordering Food delivery / online ordering

Promotion-heavy food ordering interface built for quick scanning, large-category navigation, and repeat delivery behavior. Interface pemesanan makanan yang berat di promo, dibuat untuk scanning cepat, navigasi kategori besar, dan perilaku repeat order.

Strong emphasis on merchandising and conversion surfaces, not just menu display. Penekanan utama ada pada merchandising dan conversion surface, bukan cuma tampilan menu.

Open site Buka situs

Levi's Red Tab Levi's Red Tab

01 / 02

Loyalty Program Loyalty Program Rewards Rewards Membership Portal Membership Portal

Levi's Red Tab Levi's Red Tab

Retail loyalty / membership portal Retail loyalty / portal membership

Membership and rewards portal for a retail loyalty program, covering onboarding, benefits, and redemption-oriented account views. Portal membership dan rewards untuk program loyalty retail, mencakup onboarding, benefit, dan view akun yang berorientasi pada penukaran.

Clear hierarchy between brand, rewards state, and redeemable actions. Hirarki dibuat jelas antara brand, status rewards, dan aksi redeem yang tersedia.

Open site Buka situs

About Tentang

I am a senior backend engineer with 7+ years at Kompas Gramedia, Stamps Indonesia, and Darter. My focus is on backend systems, integrations, databases, and platforms that need to stay stable when used by many people. Saya adalah senior backend engineer dengan 7+ tahun pengalaman di Kompas Gramedia, Stamps Indonesia, dan Darter. Fokus utama saya ada di backend systems, integrasi, database, dan platform yang harus stabil saat dipakai banyak orang.

At Kompas Gramedia, I led work across B2B and B2C systems — microservices migration, zero-downtime payment cutover, and multi-warehouse fulfillment at e-commerce scale. Di Kompas Gramedia, saya memimpin pekerjaan di sistem B2B dan B2C, termasuk migrasi microservices, zero-downtime payment cutover, dan multi-warehouse fulfillment untuk skala e-commerce besar.

On the side, I also build lightweight, clean websites for Indonesian businesses — mostly company profiles, landing pages, and simple internal tools that load fast, look intentional, and are easy to reach via WhatsApp. Di luar pekerjaan utama, saya juga membangun website ringan dan rapi untuk bisnis Indonesia — terutama company profile, landing page, dan tools internal sederhana yang cepat dibuka, enak dilihat, dan mudah dihubungi lewat WhatsApp.

Experience Pengalaman

Jan 2026 — Present Jan 2026 — sekarang

Full Stack Engineer (Remote) Full Stack Engineer (Remote)

Darter.ai

NEMT logistics platform. Involved in data architecture migration across multiple backend services, plus rollout of rideshare configuration across services and stacks. Platform logistics untuk NEMT. Terlibat dalam migrasi arsitektur data di beberapa backend service, serta rollout konfigurasi rideshare lintas service dan stack.

Go PHP/Symfony Node.js Angular React Native MySQL Kafka
Nov 2020 — Jul 2025 Nov 2020 — Jul 2025

Tech Lead Tech Lead

Kompas Gramedia

Led 3-5 backend developers across B2B and B2C systems. Monolith → microservices migration, zero-downtime Midtrans → Xendit cutover, and multi-warehouse fulfillment integrating 110 offline bookstores. Memimpin 3–5 backend developer untuk sistem B2B dan B2C. Mengerjakan migrasi monolith ke microservices, zero-downtime cutover Midtrans ke Xendit, serta multi-warehouse fulfillment dengan integrasi ke 110 toko offline.

Python Go Django FastAPI PostgreSQL MongoDB AWS GCP
Nov 2018 — Oct 2020 Nov 2018 — Okt 2020

Software Developer Software Developer

Stamps Indonesia

Built a customer engagement platform for F&B and retail. Loyalty integrations with Garuda, KrisFlyer, and CapillaryTech, plus payment reconciliation across Dana, GoPay, and OVO. Membangun platform customer engagement untuk F&B dan retail. Mengerjakan integrasi loyalty dengan Garuda, KrisFlyer, dan CapillaryTech, serta rekonsiliasi pembayaran Dana, GoPay, dan OVO.

Python Django PostgreSQL Redis Elasticsearch

Skills Keahlian

I work mostly across backend systems, service-to-service integrations, databases, and lightweight frontend delivery for fast shipping. Saya banyak bekerja di backend systems, integrasi antarservice, database, dan frontend ringan untuk kebutuhan delivery yang cepat.

Backend Backend

Python Python
Django Django
FastAPI FastAPI
Go Go
PHP / Symfony PHP / Symfony
Node.js Node.js

Frontend Frontend

React React
Angular Angular
Astro Astro
Tailwind CSS Tailwind CSS

Database Database

PostgreSQL PostgreSQL
MySQL MySQL
MongoDB MongoDB
Redis Redis

Infra Infra

AWS AWS
GCP GCP
Docker Docker
Kubernetes Kubernetes
Cloudflare Cloudflare

Technical Focus Area Teknis

Microservices migration Microservices migration
Zero-downtime cutover Zero-downtime cutover
Payment integration Payment integration
Kafka Kafka
Internal tools Internal tools
Company profile website Company profile website

Language Bahasa

Indonesian — native Indonesia — native
English — professional English — professional

Get in touch Kontak

Need help with a website, landing page, backend system, or simple internal tool? Reach me on WhatsApp or email. I usually reply within 4 working hours. Sedang butuh bantuan untuk website, landing page, backend system, atau internal tools sederhana? Silakan hubungi saya lewat WhatsApp atau email. Biasanya saya membalas dalam 4 jam kerja.

6285174125563

rinofazar@gmail.com

linkedin.com/in/rino-faizar

GitHub

github.com/rinofazar