Independent developer · Norway
Useful software.
Built with care.
I’m Boyuan, a freelance software developer. I build mobile apps, backend systems, and software that connects the digital and physical world.
FROM IDEA TO IMPLEMENTATION01 / 03
▤MobileBuilt for people
⌘BackendConnected by design
⊞DevicesGrounded in the real world
+SOFTWARE, END TO END+
What I work onAndroid applications / Backend & APIs / IoT & firmware
01 — Selected work
From the screen
to the real world.
A selection of projects spanning applications, infrastructure, and connected devices.
CONNECTED SPACES System concept
01 / LivingLighting
02 / Climate21°Environment
03 / AccessDevices
Devices → application API → mobile app
01 / BACKEND & MOBILE
Smart-building platform
An application layer for managing connected spaces, with device onboarding, scoped access, normalized device state, and automation rules.
Development focus Rust APIs, PostgreSQL data models, platform integration, and Android device-management workflows.
Private project · Development implementation
LEARNING, ANYWHERE App concept
A LITTLE EVERY DAY学xuéto learn · to study
Designed to work offline
02 / NATIVE ANDROID
Vocabulary, on your terms
An independent Chinese and Japanese vocabulary app with local dictionaries, spaced repetition, and text or photo import.
Development focus Native Android interfaces, local storage, and on-device OCR. Physical-device acceptance is pending.
Private project · Native app in development
LOCAL BY DESIGN Hardware concept
hub.LOCAL CONNECTION
BLEIRUPLINK
Connected devices. Local control.
03 / EMBEDDED & IoT
An offline-first room hub
Firmware for a local hub that coordinates Bluetooth devices, controls infrared appliances, and queues events for a cellular uplink.
Development focus Device protocols, persistent state, local APIs, and backend contracts. Hardware validation is pending.
Private project · Firmware candidate
02 — How I can help
A practical partner
for your next build.
From a focused feature to a connected system, I help turn requirements into working software.
01Mobile applications
Android interfaces, offline storage, API integration, and device connectivity.
02Backend development
Application APIs, database design, access control, and integrations between services.
03Connected-device software
Firmware, Bluetooth workflows, device protocols, and connections between hardware and apps.
03 — A little about me
Hi, I’m Boyuan.
↗ Based in Ron, Norway · Working remotely
I’m an independent software developer interested in how things fit together: the interface someone uses, the services behind it, and the devices it connects to.
My work spans native Android development, backend systems, and embedded software. I value clear requirements, thoughtful implementation, and a handoff that makes the next step easier.
Find me on GitHub ↗