Web applications
Web apps and internal tools built with Next.js, React, TypeScript, and Node.js.
Software engineer · Surabaya, Indonesia
I build web and mobile software.
I’ve worked on software for logistics, fleet technology, e-commerce, and real estate.
Next.js & ReactFlutter.NET
15+Clients served
15+Projects shipped
8+Years in software
2+Open-source projects
What I do
Areas I work in
I can take on a focused part of a product or work across its frontend, mobile app, and backend.
Mobile apps
Cross-platform apps in Flutter, from interface design to API integration and release.
Backend and consulting
APIs, databases, technical planning, and ongoing support with .NET or JavaScript.
RPA and Automations
Automations on everyday task using RPA tools.
About
A little about me
I'm Era Prima S., a software engineer with more than eight years of experience. I've worked on products in logistics, fleet technology, e-commerce, and real estate.
Industries I know
- Logistics
- Fleet technology
- E-commerce
- Real estate
- Finance
- Hospitality
- Travel Agency
- Consulting
Projects
Selected work
Browse all 17 projects. Each one has its own page with the details, technologies, and decisions behind it.
Mobile Apps
Laundry Rakyat
A mobile application designed to simplify laundry operations, order tracking, and delivery management for users and service providers.
Experiments
Terra UI Kit
A premium Vue.js component library enforcing modern tactical Glassmorphism, distributed via NPM.
Mobile Apps
Deep Focus
A productivity app that helps you stay focused by locking distracting apps, monitoring screen time, and activating Do Not Disturb automatically.
Experiments
Brutal Task Manager
A task manager with a brutalist design, focusing on functionality and a raw aesthetic.
Web Apps
Universe Pedia
An interactive encyclopedia of the cosmos, from planets to distant stars.
Mobile Apps
VMS Apps: Vehicle Monitoring System
A comprehensive Vehicle Monitoring System using a driver's phone as a GPS tracker, allowing admins to monitor driver behavior.
Automotive
DAS Motors Surabaya: Car Dealer Prototype
A prototype for a car dealership website, featuring vehicle listings and details. Built with Next.js and Tailwind CSS.
Web Apps
Bertera Company Profile & Catalog
A company profile and product catalog for Bertera, built using NextJS and TailwindCSS.
Automotive
Reimer Auto: Car Accessories Website
An e-commerce platform and catalog for Reimer Auto, showcasing a wide range of car accessories and parts.
Real Estate
Alana Surabaya: Real Estate Website
alanasurabaya.com is a property website for Alana Regency Surabaya, built with NextJS and TailwindCSS.
Web Apps
Era & Lila Wedding
A premium digital wedding invitation and guest management system built for my own wedding.
Mobile Apps
Himawari Apps
A personal social media application dedicated to my wife, Lila, built with heart and modern mobile tech.
Web Apps
SmartMarble
A modern, high-performance web platform and catalog for premium marble and stone collections.
Web Apps
Al-Azhar School Registration
A robust, scalable digital platform for managing student admissions and school registrations.
Mobile Apps
Muncak App
A comprehensive hiking companion app designed to help outdoor enthusiasts discover trails and prepare for mountain expeditions.
Mobile Apps
Wangku.ID
Wangku.id adalah aplikasi pencatat dan pemantau keuangan pribadi yang membantu pengguna mengelola pemasukan, pengeluaran, aset, liabilitas, budget bulanan, hingga cashflow dalam satu tempat. Aplikasi ini dirancang dengan tampilan minimalis, modern, dan mudah digunakan, sehingga cocok untuk pengguna yang ingin mengatur keuangan harian tanpa ribet.
Mobile Apps
UniversePedia Mobile
Aplikasi ensiklopedia astronomi interaktif versi mobile yang memungkinkan penjelajahan tata surya, rasi bintang, dan fenomena kosmos langsung dari genggaman.
Writing
Notes from engineering
A couple of articles about Flutter, app architecture, and performance.
GetX vs BLoC vs Provider — The Truth Most Flutter Devs Miss
Stop arguing about which one is "better" and start understanding why they exist.
Read article
Rendering 150,000+ markers smoothly on Google Maps in Flutter
How to handle massive data on maps without lag, crashes, or memory spikes using tactical rendering strategies.
Read articleWorking together
A few practical details
If you're considering a project, these answers may help. If not, just send me a note.
Get in touchCan you work full-time with a team?
Yes. I’m open to full-time product engineering contracts and can join an existing planning and release process.
What do you usually build with?
For web, I mostly use Next.js, React, TypeScript, and Node.js. For mobile, I use Flutter. I also work with .NET when it suits the project.
Can you overlap with other time zones?
I can usually set aside around four hours of overlap with US or European teams. We can agree on meeting times and how to document decisions up front.
Can you help after launch?
Yes. I can help with maintenance, security updates, performance fixes, and new features after release.
Can we start with a small project?
Yes. A small pilot is a practical way to check the scope and working relationship before committing to a larger build.
Contact
Have a project in mind?
Tell me a little about what you need. The form opens a WhatsApp draft for you to review before sending.