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jkl4o4

Ruslan S

@jkl4o4

Fullstack Developer

Eslováquia
Ucraniano, Inglês
Algumas informações são exibidas no idioma inglês.
Sobre mim
I am a Software Engineer with over 3 years of experience in development. I started my career as an Android Developer and transitioned to Full-Stack development, specializing in JavaScript, TypeScript, Node.js, and React. I am passionate about building clean, scalable applications and growing my expertise across the entire stack.... Saiba mais

Habilidades

j
jkl4o4
Ruslan S
offline • 

Conheça meus serviços

Desenvolvimento e MVP
I will build a cross platform app for mobile, desktop, and web
A partir deUS$ 40 /projetoMais detalhes

Portfólio

Experiência profissional

Freelance

Freelance

Período integral • 3 yrs

Full-stack Developer

Jul 2024 - Jul 2025 • 1 yr

Project: A custom browser built with Electron for ticket scraping, equipped with proxy support and anti-detection features. Stack: JavaScript, TypeScript, Node.js, Electron, MongoDB, React. Identified and resolved critical issues and bugs. Successfully migrated the application from JavaScript to TypeScript. Refactored backend functionality using TypeScript and implemented new features. Сomplete redesign of the application. Contributed to the integration of new functionality.

Android Developer

Nov 2022 - Aug 2024 • 1 yr 9 mos

Project: Mobile applications for an affiliate marketing company in the gambling industry. Stack: Kotlin, XML, MVVM, Room, Retrofit2, Hilt, Koin. Developed and optimized mobile applications focusing on user experience, performance, and scalability. Experienced in using Firebase services to build, monitor, and improve apps. Decompiled apps to understand how they work and apply best practices Created custom views and implemented advanced features to enhance application usability and engagement.

Android Developer

Aug 2022 - Nov 2022 • 3 mos

Project: A food delivery service app with payment system integration. Stack: Kotlin, XML, MVVM, Room, Retrofit2, Hilt, Socket.io, Google Services. Redesigned and optimized Android applications to improve user interface and performance. Implemented LiqPay and WayForPay payment options to broaden functionality and improve the user experience. Update applications on Google Play.