Software Engineer · West Java, Indonesia
Anggara Roshandi Putra
I'm Anggara Roshandi Putra (Angga), a software engineer in West Java, Indonesia with 3 years of experience shipping products across backend, web, and mobile. At DoctorTool I build .NET services and the React Native patient app used by clinics across Indonesia. Before that I co-founded Writeen, an edtech platform, and built its Go backend for three frontends.
Software Engineer · Async Alchemist
Hey, I'm Angga!
Nice to meet you, I'm Angga. You can also call me Eng.
Day to day, I work as a software engineer, building applications for the healthcare industry. On top of that, I'm also running my own edtech startup, while still finishing my degree in Informatics Engineering. But don't worry, I still have room for other projects too. If you've got something on your mind, feel free to share it with me. Honestly, just imagining who's looking at this portfolio right now already makes me curious and kind of excited. Do you have an interesting idea you're trying to build or grow? Or maybe you carry some bigger vision behind your own idealism? Haha, a bit of a weird thing to wonder about, but that's genuinely what goes through my head.
Outside of coding, I like writing, poetry and short stories, usually in Indonesian. I'm also a big fan of games with strong storytelling. Sometimes I mess around with my own game ideas, even though not all of them get finished (fingers crossed I get to publish one someday, hehe).
If you're asking about my perspective on programming, to me, code is just a tool. But it's a tool powerful enough to help shape how we live our everyday lives. Think back 200 years, who could've imagined we'd one day be "talking" to a small piece of metal that fits in our hand, especially in this AI era we're living in now? We're living in a time where we've come to realize Tony Stark was basically a vibe coder too, haha.
in a nutshell
on repeat
fresh off the desk
Things I've made
Tap a project to pull out its page.
Kavpad
the problem
Long stories are hard to keep straight: characters, places, and lore end up scattered across chapters. And most AI writing tools try to write the story for you instead of helping you think.
my role & what I did
Founder · Full-stack Developer
- Founded the product and built it end to end, from frontend to backend.
- Built auto-linking of characters, places, and lore across chapters.
- Added Word/PDF manuscript import so writers can bring their existing drafts.
- Built an AI assistant (Claude Haiku) that asks questions to unblock writers instead of writing for them.
what it looks like
tap a name → its card pops up
a writer's desk where every chapter knows its own characters
built with
- React
- Vite
- Go
- MongoDB
- Google Cloud
- Claude
DT Nakes — DoctorTool
the problem
Clinics need one place to manage patient records, appointments, and prescriptions.
my role & what I did
Software Engineer
- Build .NET backend services and APIs serving DoctorTool's mobile app and web platform.
- Ship features end to end across backend, web, and mobile with the product and design teams.
- Discuss technical decisions directly with the CTO.
what it looks like
1 today's visits
2 the queue
3 medical notes
the clinic side, from the day's visits to the patient's notes
built with
- .NET
- React
- TypeScript
DT Care — DoctorTool
the problem
Patients of clinics across Indonesia need one app for bookings, online consultations, e-prescriptions, and their health logs.
my role & what I did
Software Engineer
- Develop the React Native patient app: bookings, online consultations, e-prescriptions, and health logs.
- Ship releases through CI/CD, with JS-only fixes delivered quickly via Hot Updater OTA updates.
- Monitor stability with Firebase Crashlytics and Analytics to find and fix production crashes and performance issues.
what it looks like
1 home
2 book a visit
3 booked!
the patient side, from opening the app to a queue number
built with
- React
- TypeScript
- .NET
- Firebase
Writeen
the problem
Young writers grow faster with a mentor, but finding one and booking a session isn't easy. Writeen connects writers with mentors in one platform.
my role & what I did
Co-Founder · Backend & Web
- Single-handedly built the Go (Gin) REST API powering three frontends (mentor, tutor, admin).
- Built the web product with Next.js, TypeScript, and Tailwind CSS.
- Delivered JWT role-based access, chat and video consultations, Play-Lit, articles, and email notifications.
- Integrated Midtrans payments with webhooks that unlock paid features automatically.
- Owned technical direction and infrastructure: MongoDB, Google Cloud Storage, Docker on a VPS, release pipelines.
what it looks like
tutor: sets weekly hours 
student: finds a mentor 
student: books & pays 
the session: chat + video 
shared notes & action items 
tutor: withdraws earnings
one booking, two sides: the student's journey and the tutor's, meeting in the session
built with
- Gin
- Go
- Next.js
- TypeScript
- Tailwind CSS
- MongoDB
- Docker
- Google Cloud
SUAR
the problem
In an emergency the internet and cell network can go down exactly when people need to find each other.
my role & what I did
Mobile Engineer · 3rd place, Garuda Hacks 7.0
- Led the mobile engineering in React Native at Garuda Hacks 7.0 (3rd place, Safety Track).
- Built phone-to-phone locating over a Bluetooth Low Energy mesh, with no internet or cell network required.
- Designed a compact 19-byte binary wire protocol for the mesh.
- Added native Android emergency haptics that bypass silent mode.
what it looks like
- people nearby, with how far they are
- the arrow points toward them
- safety tips for your area
- make this phone a “safe here” beacon
- voice + vibration, no need to look
- disaster mode saves battery
field notes: tested phone-to-phone, no internet, no signal
built with
- React
- Android
- Bluetooth
Mariolahraga
the problem
A sports coaching service across Jabodetabek needed one website for its classes, coach profiles, registration, and a blog.
my role & what I did
Full-stack Developer
- Built the website in Svelte: classes, coach profiles, registration, and blog.
- Built a Go backend for managing the blog.
what it looks like
every class gets its own page, ready for parents (and search engines)
built with
- Svelte
- Go
Ucup AI Bot
the problem
Bring ChatGPT into WhatsApp, where people already chat every day.
my role & what I did
Creator · Open Source
- Built a WhatsApp chatbot connected to ChatGPT through LangChain, in TypeScript.
- Open-sourced it on GitHub.
built with
- LangChain
- TypeScript
Digital Invitation
the problem
A wedding needs more than a pretty invitation: hosts also need to know who actually showed up.
my role & what I did
- Built a wedding invitation web app with a QR-code attendance system (2025).
Active Mandarin Indonesia
the problem
A Mandarin education provider needed a site for its courses and study-in-China programs.
my role & what I did
- Built the course and study-in-China website.
built with
- Next.js
- Tailwind CSS
polaroids from the corkboard
Where I've been
work
- Build .NET backend services & APIs serving both the mobile app and DoctorTool's web platform.
- Develop the React Native patient app (bookings, online consultations, e-prescriptions, health logs), used by clinics across Indonesia.
- Ship features end to end across backend, web, and mobile with the product & design teams.
- Ship releases through CI/CD, delivering JS-only fixes quickly via Hot Updater OTA updates.
- Monitor stability with Firebase Crashlytics & Analytics to find and fix production crashes and performance issues.
.NETC#React NativeTypeScriptFirebase- Single-handedly built the Go (Gin) REST API powering three frontends (mentor, tutor, admin).
- Built the web product with Next.js, TypeScript, and Tailwind CSS.
- Delivered JWT role-based access, chat + video consultations, Play-Lit, articles, and email notifications.
- Integrated Midtrans payments with webhooks that unlock paid features automatically.
- Owned technical direction & infrastructure: MongoDB, Google Cloud Storage, Docker on a VPS, release pipelines.
GoNext.jsMongoDBDocker
school
Coursework: Data Structures & Algorithms, Operating Systems, Computer Networks, Machine Learning.
awards
also
- Top 20 Early-Stage Startups — Pertamuda Seed & Scale2024
- Mobile Curriculum Mentor — Google DSC Solution Challenge2024
- Finalist — AWS Cloud Computing Club Competition (C4)2021
tools & things I know
My bookshelf
Main stack: React Native, Flutter, Next.js, Node.js, Go, ASP.NET, PostgreSQL, MongoDB.
languages
mobile
frontend
backend
databases
cloud & devops
tools
open to new projects
Send me a letter
Got an idea you're trying to build or grow, or just want to say hi? The mailbox is always open.