Competitive Sudoku
Mobile Sudoku project with more than 10,000 downloads, five difficulty levels, smart hints, and multilingual support.
- React Native
- Expo
- TypeScript
- Spring Boot
- Firebase
- AdMob
Ümit Yasin ÇobanFull-Stack & Mobile DeveloperFull-Stack and Mobile Developer focused on Java, Spring Boot, React Native, React, TypeScript, PostgreSQL, AI automation, microservices, and cloud deployments.ReactReact NativeNext.jsJavaSpring BootSpring AIOpenAI APIJsoupPostgreSQLAWS ECSDockerChrome Extension Manifest V3Node.jsNestJSTypeScriptJavaScriptMobile DevelopmentWeb DevelopmentFull Stack Development
Available for new projects
Ümit YasinÇoban
Full-Stack & Mobile Developer building production mobile apps, Java/Spring Boot services, AI automation workflows systems, and cloud-ready web platforms.
JavaSpring BootReact NativeSpring AIOpenAIPostgreSQL
ExpertiseTechnologies I
Technologies I
work with
Java
Spring Boot
React Native
React
TypeScript
PostgreSQL
Spring AI
OpenAI API
NestJS
GraphQL APIs
Next.js
Tailwind CSS
Docker
AWS ECS/S3
Git
Kubernetes
Socket.io
Sass/Scss
Storybook
GitLab
Skill Proficiency
React70%
Next.js75%
TypeScript80%
React Native70%
Java95%
Spring Boot95%
Node.js75%
NestJS65%
PostgreSQL80%
Docker60%
AWS50%
GraphQL50%
CareerProfessional
Professional
journey
June 2022 - Present
Software Developer
Confidential Employer 1
Contributed to software development and maintenance in collaboration with technical and business teams.
Software DevelopmentTeam CollaborationMaintenance
Apr 2022 - May 2022
Software Developer
Confidential Employer 2
Contributed to software development and maintenance in collaboration with technical and business teams.
Software DevelopmentTeam CollaborationMaintenance
AboutEngineering solutions
Engineering solutions
that scale
4+
Years Experience
Java 8-25
Backend Range
10K+
Mobile Downloads
I'm a Full-Stack & Mobile Developer focused on turning product requirements into maintainable web, mobile, and backend applications. My strongest day-to-day stack is Java, Spring Boot, React Native, React, TypeScript, and PostgreSQL.
My professional approach emphasizes maintainable code, careful testing, clear documentation, and teamwork.
I've shipped personal mobile products such as Competitive Sudoku, which reached 10K+ downloads, and continue to develop independent mobile and web products.
Core principles
Product-minded DeliveryClean ArchitectureReliable IntegrationsLegacy Modernization
Selected WorkAI, mobile, and backend
AI, mobile, and backend
systems in production
Neon Orbit / Space Drill
Unity mobile arcade game combining C# gameplay development with Spring Boot API work.
- Unity
- C#
- Spring Boot
- REST APIs
- Mobile Development
ContactLet's build something
Let's build something
amazing together
Have a project in mind? I'd love to hear about it. Let's discuss how we can work together.
Based in
Turkey 🇹🇷
Available for remote work worldwide