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Vlas O.

@vlaso

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5.0
2

1.3

1.3

100%

Full Stack Developer

$25 USD / Hour

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Ukraine (8:58 AM)

Joined on December 11, 2025

$25 USD / Hour

Hello, I’m , an AI-driven Full-Stack Developer and Shopify Expert focused on building scalable, high-performance web applications and conversion-optimized eCommerce solutions. I work across the full stack — from modern frontends to robust backends — using technologies like React, Next.js, Node.js, and cloud-based architectures. I specialize in Shopify custom development, including theme customization, app integrations, performance optimization, and headless Shopify setups when advanced flexibility is required. On the AI side, I integrate AI-powered features such as automation, intelligent workflows, chatbots, data processing, and API-driven AI services to enhance product functionality and business efficiency. I have strong experience with API integrations, real-time systems, and databases (Firebase, MongoDB, SQL/NoSQL), ensuring reliable data flow and scalable infrastructure. My work emphasizes clean architecture, maintainable code, and measurable business results. I enjoy collaborating with designers, product owners, and backend engineers, and I’m highly focused on delivering solutions that are not only technically solid but also practical, user-friendly, and revenue-driven. I’m always exploring new technologies and patterns to build software that is fast, secure, scalable, and future-proof.

Verifications

On time

100%

On budget

100%

Accept rate

100%

Portfolio

Portfolio

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5.0 · 2 Reviews
Reviews
S

Fix Cyclone BLK360 Export Crashes £32 GBP

Great communication, put in 100% effort, trustworthy freelancer [12 March, 2026] Good freelancer, put 100% effort in, trustworthy person!

Scott L.

@scottline

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London, United Kingdom

18 days ago

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Experience

Development Contracter - Frontend Engineer

Feb, 2024 - Present

2 years, 1 month

HorizonCloud

Feb, 2024 - Present

2 years, 1 month

Designed and developed cross-platform mobile applications using Flutter and React Native, delivering smooth UI/UX and high performance on both iOS and Android. Built and maintained scalable backend services with Node.js, Express, and MongoDB, supporting authentication, payments, notifications, and real-time features. Integrated REST APIs and WebSocket-based real-time data syncing for chat, activity feeds, and live updates.

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Florida, United States

Feb, 2024 - Present

2 years, 1 month

Development Contracter - Full Stack developer

Oct, 2022 - Oct, 2023

1 year

NexaSoft Labs Pte. Ltd

Oct, 2022 - Oct, 2023

1 year

Developed and maintained responsive web applications using React, TypeScript, and Next.js, ensuring fast load times and smooth user interactions. Worked closely with backend engineers to integrate REST/GraphQL APIs and optimize data-fetching flows. Collaborated with designers to convert Figma prototypes into pixel-perfect, accessible interfaces following WCAG standards. Improved overall performance through code splitting, lazy loading, caching, and Lighthouse-driven optimizations.

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Ayer Rajah Crescent, Singapore

Oct, 2022 - Oct, 2023

1 year

Education

Master of CS

2019 - 2021

2 years

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Ukraine

2019 - 2021

2 years

Registered Users

Total Jobs Posted

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