Hire the Best Android Developers
in South Korea
Seoul, South Korea
Android Developer | Software Engineer | AI Background Experienced Android developer with 3+ years in building efficient, high-quality mobile apps using Kotlin and Java. With a master’s degree in Artificial Intelligence, I also have a solid foundation in software engineering and machine learning. I deliver reliable solutions tailored to client needs. Highlights: - Full Android App Development: UI/UX design, coding, testing, and deployment. - Software Engineering: Python, Java Kotlin, SQL, JavaScript, and Flutter - Machine Learning: NLP, PyTorch, deep learning models, LLM, and data-driven solutions. Let’s create your next project with clean, scalable code.
- Android App Development
- Java
- Kotlin
- App Development
- JetPack
- REST API
- SQL
- Git
- Coroutine
- Retrofit
- Python
- Bash
- HTML
- JavaScript
- Machine Learning
Ulsan, South Korea
Building high-performance applications is easy; making them secure and scalable is where most projects fail. As a Full-Stack Engineer with a PhD in Biomedical Engineering, I bring a level of scientific rigor to software development that goes beyond simple coding. I specialize in the Next.js, Expo, and Supabase ecosystem, building robust SaaS and mobile platforms that prioritize clean architecture and data integrity. 🛡️ Specialized Service: AI Code Security & Logic Audits With the rise of AI-generated code, many applications are built with hidden vulnerabilities - insecure Row-Level Security (RLS) policies, exposed API keys, and inefficient database schemas. I provide comprehensive audits to transform AI-assisted prototypes into production-ready, hardened applications. Supabase Hardening: Auditing RLS policies and Edge Functions to prevent data leaks. Architectural Recovery: Refactoring "spaghetti" AI code into maintainable, modular systems. Logic Verification: Identifying edge-case failures in complex state management and auth flows. 🚀 Technical Expertise Frontend: Next.js (App Router), React, TypeScript, TailwindCSS, Solid.js. Mobile: Expo & React Native for cross-platform iOS/Android deployment. Backend & Infrastructure: Supabase (PostgreSQL, Auth, Real-time), Node.js, Python (FastAPI/Flask). Payments & Scaling: Full integration of Stripe and RevenueCat for global subscription models. 💡 Proven Track Record From developing a browser-based video editing suite to architecting real-time messaging platforms with complex permission hierarchies, I have a history of delivering technically demanding projects. My background in engineering means I treat your app’s logic with the same precision required for medical-grade hardware. Whether you're building a new MVP or need a security audit on an existing codebase, I ensure your application is built on a rock-solid foundation.
- CSS
- JavaScript
- TypeScript
- React
- Next.js
- HTML
- Material UI
- RESTful API
- Redux
- Tailwind CSS
- Arduino
- KiCad
- Raspberry Pi
- Adobe Illustrator
- SolidWorks
Seoul, South Korea
I’m a passionate Android Developer with over 3 years of experience building high-quality, user-friendly mobile apps. I specialize in Kotlin, Jetpack Compose, and Clean Architecture, and have successfully delivered 4 apps to the Google Play Store, including international launches. I’ve built secure in-app payment systems, integrated deep linking, and implemented media playback features using ExoPlayer. My experience spans both native Android and Flutter, allowing me to adapt to diverse project needs and deliver fast, maintainable solutions. Whether you need a brand-new app, feature upgrades, or bug fixes, I focus on writing clean, testable code and collaborating effectively with teams and clients. Let’s build something great together!
- Android App Development
- Java
- Kotlin
- Mobile App
- App Development
- Flutter
- JetPack
- RESTful API
- GraphQL
- Firebase
- Git
- Jira
How it works
Post a job for free Post a job
Tell us what you need. Create your own job post or generate one with AI then filter talent matches.
Hire top talent fast
Consult, interview, and hire quickly, so you can meet the freelancers you're excited about.
Collaborate easily
Use Upwork to chat or video call, share files, and track project progress right from the app.
Payment simplified
Manage payments in one place with flexible billing options. Only pay for approved work, hourly or by milestone.
Don't just take our word for it
“Upwork provides an umbrella-level of security. I can see a talent’s work history and ratings. I can hold payments in escrow. I can communicate through Upwork Messages instead of working through my email address.”
Kim Darling
Emerald Tiger
“Upwork is the best platform to hire skilled professionals when we're not looking for a full-time employee. All the companies in our portfolio use Upwork to find talent across a wide range of fields.”
David Merry
Kinetic Investments
“Our very specific requirements can be a challenge—With Upwork, we’re able to access a bigger community to ensure the success of our projects.”
Katja Krohn
Summa Linguae
Resources to help you hire

Cost to hire a Android Developer
Explore typical Android Developer rates and what businesses pay to hire top talent.

Android Developer job description template
Get tips to write a job post that attracts qualified Android developers.

Android Developer interview questions
Top interview questions to help you hire the right Android developers, faster.
Resources to help you hire

Cost to hire a Android Developer
Explore typical Android Developer rates and what businesses pay to hire top talent.

Android Developer job description template
Get tips to write a job post that attracts qualified Android developers.

Android Developer interview questions
Top interview questions to help you hire the right Android developers, faster.
How do I hire a Android Developer in South Korea on Upwork?
You can hire a Android Developer in South Korea on Upwork in four simple steps:
- Create a job post tailored to your Android Developer project scope. We'll walk you through the process step by step.
- Browse top Android Developer talent on Upwork and invite them to your project.
- Once the proposals start flowing in, create a shortlist of top Android Developer profiles and interview.
- Hire the right Android Developer for your project from Upwork, the world's largest work marketplace.
At Upwork, we believe talent staffing should be easy.
How much does it cost to hire a Android Developer?
Rates charged by Android Developers on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.
Why hire a Android Developer in South Korea on Upwork?
As the world's work marketplace, we connect highly-skilled freelance Android Developers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream Android Developer team you need to succeed.
Can I hire a Android Developer in South Korea within 24 hours on Upwork?
Depending on availability and the quality of your job post, it's entirely possible to sign up for Upwork and receive Android Developer proposals within 24 hours of posting a job description.
Find more freelancers
Top cities for Android Developers in South Korea
- Sound Designers in Seoul, KR
- Web Designers in Seoul, KR
- Video Editors in Seoul, KR
- Music Producers in Seoul, KR
- Copywriters in Seoul, KR
- Photographers in Seoul, KR
- Videographers in Seoul, KR
- Reviews Writers in Seoul, KR
- English to Korean Translators in Seoul, KR
- Computer Vision Engineers in Incheon, KR
- Writers in Seoul, KR
- Virtual Assistants in Seoul, KR
- Voice Actors in Seoul, KR
- Translators in Jeju City, KR
- Korean to English Translators in Busan, KR
More top skills in South Korea
- iOS Developers in South Korea
- TypeScript Developers in South Korea
- Embedded Systems Engineers in South Korea
- NoSQL Developers in South Korea
- Localization Specialists in South Korea
- UI Designers in South Korea
- Circuit Designers in South Korea
- Product Designers in South Korea
- Administrative Assistants in South Korea
- Web Designers in South Korea
- UX Designers in South Korea
- Design Thinking Specialists in South Korea
- Front-End Developers in South Korea
- Graphic Designers in South Korea
- Video Editors in South Korea
- Transcriptionists in South Korea