Security. At scale.
Secure Android applications and core SDKs deployed to millions of active users.
AndroidSDK developmentSecurity
SOFTWARE ENGINEER · ANDROID
Thoughtful code.
Powerful Android
experiences.
I'm Sadig Hasanzade. I build secure, resilient Android applications and SDKs — with care for the people who use them.
Hi, I'm Sadig.Engineer. Builder. Mentor.
K Kotlin first
Android at heart
CRAFTED WITH PURPOSE ↗01 / SELECTED WORK
Built for the real world.
From enterprise sales to secure mobile systems.
Engineering that makes a difference at scale.
Sales, on the move.
Core features for TayqaSale, an enterprise sales solution used by 30+ major wholesale corporations.
AndroidEnterpriseTeam leadership
Visuals are conceptual illustrations. Contributions are based on my professional experience.
More code, less talk. Find me on GitHub02 / THE JOURNEY
Always building.
Always learning.
11/2023 — 11/2026
Android Developer
CyberneticaTartu, Estonia
Engineered secure Android apps and core SDKs. Kept codebases resilient through refactoring and dependency upgrades, and wrote technical documentation for developers and third-party integrators.
Android applicationsCore SDKsSecurity
07/2021 — 09/2023
Mobile Team Lead & Android Developer
TayqaTechBaku, Azerbaijan
Led the mobile engineering team, mentored junior developers, and defined architectural standards. Delivered core TayqaSale features and oversaw feature planning, estimation, and task assignment.
Team leadershipArchitectureEnterprise mobile
09/2022 — 01/2023
Programming Mentor
DevshubBaku, Azerbaijan
Taught programming fundamentals with Python, including algorithms, object-oriented programming, and Pygame.
PythonMentorship
05/2020 — 12/2020
Back End Developer Intern
DeliverofBaku, Azerbaijan
Built a dedicated microservice with FastAPI and Golang to process, store, and post image assets within a delivery platform.
FastAPIGolangMicroservices
03 / MY TOOLKIT
The right tools.
A strong foundation.
Modern Android development, from a polished
interface to the systems underneath.
Android SDK
Native foundations
Kotlin & Java
Core languages
Jetpack Compose
Modern declarative UI
KMM
Shared mobile code
Material Design
Considered interfaces
Android security
Keystore, pinning, R8
WorkManager
Background work
Android Profiler
CPU, memory & energy
MVVM & MVI
Predictable state
Clean Architecture
Clear boundaries
Multi-module apps
Scalable codebases
Hilt & Koin
Dependency injection
Coroutines & Flows
Asynchronous Kotlin
View & Data Binding
UI integration
Retrofit & OkHttp
HTTP clients
Ktor Client
Kotlin networking
Kotlinx Serialization
Structured data
REST & WebSockets
Connected experiences
Room & SQLDelight
Local persistence
ObjectBox & SQL
Data storage
JUnit 4 / 5
Unit testing
MockK & Mockito
Test doubles
Espresso
Android UI testing
Detekt & Ktlint
Static analysis
Git & CI/CD
Versioning & delivery
Firebase & Play Console
App operations
Gradle
Build tooling
AI-assisted workflows
Development support
04 / BEYOND THE CODE
Curiosity is
part of the stack.
I'm an Android engineer with a Computer Science background and a focus on resilient systems. I enjoy solving complex technical challenges, adapting to new tools, and helping other developers grow.
My work spans secure SDKs, enterprise applications, and technical mentorship. I also use AI-assisted workflows to support development and explore better ways to build.
Azerbaijani NativeEnglish C1Turkish C2Russian A1Estonian A1
A FOUNDATION IN COMPUTER SCIENCE
MSc, Computer Science
University of Tartu · Estonia
✧ Full scholarshipBSc, Computer Science
Khazar University · Azerbaijan
✧ Honor diplomaMORE THAN MILESTONES
Bronze medal · Azerbaijan National Math Olympiads
Gold medal · Ministry of Science and Education, Azerbaijan