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Ostap

intro

Level Up with Ostap - Code Master Extraordinaire

Greetings!
Im Ostap, a seasoned full-stack and mobile developer, dedicated to transforming your digital visions into reality.
With a wealth of experience in crafting robust web architectures and dynamic mobile applications,
lets team up & create something legendary. Game on? 🚀

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about me

Just a Guy Who Loves Code

Hey, I'm Ostap, based in Lviv, and I write code. Mostly web and mobile apps - stuff that gets used.
When I'm not glued to a screen, I'm probably out on my bike around Lviv. Lately, I'm into AI and Web3, keeping an eye on where tech is heading.
I also pitch in at local workshops and like being part of the tech community here.

18+

YEARS OF EXPERIENCE

59+

PROJECTS COMPLETED

Resume

Education

Lviv Polytechnic National University

2000 - 2005

Studied software engineering at Lviv Polytechnic National University, where I built a solid foundation in coding, project work, and practical tech skills.

Professional Experience

Lead React Native Developer

Pagepro / June 2022 - January 2025

Responsibilities:
● Led the development of high-performance React Native apps for cross-platform compatibility.
● Collaborated with frontend and backend teams to integrate RESTful APIs.
● Implemented efficient navigation using React Navigation and optimized app performance.
● Introduced automated testing with Jest and Detox to improve code quality and reduce bugs.
● Conducted code reviews and mentored junior developers.

Achievements:
● Contributed to a project that improved the company's website performance by 15%.
● Received commendation for quickly learning and adapting to new technologies.

Senior Mobile Engineer

PixelPlex / Feburary 2016 - November 2021

Responsibilities:
● Built a crypto wallet mobile app with Web3.js integration, enabling secure storage of ETH/BTC.
● Implemented offline-first functionality using SQLite, improving UX in low-connectivity regions.
● Advised on mobile-first UX for a DeFi staking app, increasing user retention by 25%.
● Worked closely with UI/UX designers to ensure seamless user experiences.

Achievements:
- Played a key role in reducing app load times by 20% through code optimization.
- Led a small team in a successful project rollout ahead of schedule.

Mobile Developer

Yalantis / July 2013 - January 2016

Responsibilities:
● Migrated legacy Java Android apps to React Native, cutting maintenance costs by 50%.
● Developed mobile applications using React Native, including a real-time messaging app.
● Integrated third-party libraries and APIs for payment systems and social logins.
● Optimized app performance by reducing app size and enhancing load times.
● Ensured cross-platform compatibility and responsiveness of mobile apps.

my services

Turning Ideas into High-Quality Code

From web applications to mobile apps, I bring your tech vision to life with a focus on reliability and user experience.

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Mobile App Development

Designing and building mobile applications for iOS and Android, ensuring smooth performance and an engaging user experience.

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Full Stack Web Development

Developing responsive web applications using JavaScript, React, and Python. From front-end to back-end, I create scalable and efficient web solutions.

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UI/UX Design

Creating intuitive and user-friendly designs focused on functionality and style to enhance user engagement and satisfaction.

consulting

Tech Consulting

Providing guidance on project planning, tech stack choices, and best practices to help businesses make informed tech decisions.

my skills

Building Reliable Solutions with Code and Precision

Skilled in both front-end and back-end development, I focus on creating efficient, user-friendly, and scalable applications.

Language

English

Ukrainian

Russian

Programming Languages

js

95%

JS

python

95%

Python

c++

85%

C++

java

80%

JAVA

Web Development

react

95%

React

react native

95%

React Native

angular

80%

Angular

node

90%

Node JS

Mobile App Development

ios

95%

iOS

android

90%

Android

apple watch

85%

Apple Watch

cross platform

95%

Cross Platform

Database Management

MySQL

90%

MySQL

MongoDB

95%

MongoDB

Cloud & DevOps

AWS

90%

AWS

Firebase

95%

Firebase

Docker

85%

Docker

Git

90%

Git

portfolio

What I've Built

Here's a peek into my world of development.
Every project is a story of challenges, creativity, and code coming together to create something useful.
From full-stack apps to mobile experiences, these projects show my journey in tech and the things I love to create.

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Inspy AI

Bring your inspiration to life with Inspy

Inspy AI

React Native · React/NextJS · GitHub · Amazon Web Services · Python/Django · Firebase

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ChatwellMD

Voice and video consultations

ChatwellMD

React Native · React.js · GitHub · Amazon Web Services · .NET Core

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Spenny

Personal finance management system

Spenny

React · NextJS · Python · Django · Third Parties

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Fitbody

Your fitness daily coach

Fitbody APP

React Native · Laravel · GitHub · Amazon Web Services

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Uneksija

Baby Activity Tracker App

Uneksija

React Native · Laravel · Vue.js · Amazon Web Services · Python

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Blitz

Gamers home

Blitz

React · Electron · Typescript

contact me

Ready to Talk?

Feel free to reach out with any project ideas, questions, or just to say hi. Ill read every message personally!

Get in touch!

contact

+380 96 654 4668

gmail

lvivcity.dev@gmail.com

map

Lviv, Ukraine

© Ostap 2025. All rights reserved by Ostap.
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Corporate Branding

CONTENT

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11 Best Logo Design Online & Offline Courses

graphic design | December 18, 2023

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