gwynplaine
Front End Engineer
Experienced Front-End Engineer specializing in React.js, Next.js, and TypeScript, with a proven record of boosting app performance and code quality for SaaS and financial platforms. Skilled in agile development, scalable design, and mentoring teams to deliver robust user experiences. Always ready to drive innovation in high-impact projects.
I help teams turn slow UIs into fast, delightful experiences. React, Next.js, TypeScript, SSR, perf & testing. Known for clean code, thoughtful reviews, and pragmatic architecture that scales. If you need a front-end that loads fast, tests well, and ages gracefully — let’s talk.
Experience: 5 years
Yearly salary: $70,000
Hourly rate: $20
Nationality: 🇺🇦 Ukraine
Residency: 🇵🇹 Portugal
Experience
Middle Front-end Developer
Elastio 2022 - 2024
Elastio Software - SaaS platform for AWS cloud backups, ransomware detection, and vulnerability scanning across AWS and VMware environments. Improved app stability and reduced bugs by 20% through enhanced code reviews and test coverage. Optimized workflows by decomposing epics into actionable tasks, increasing development efficiency. Enhanced application stability by expanding unit/integration test coverage with Jest and Cypress. Strengthened front-end architecture with performance optimization and scalable design improvements. Shared knowledge, mentored teammates in React.js, Redux, and Next.js, raising overall team expertise.
Junior Front-end Developer
DataOx 2021 - 2022
DataOx - Web scraping company specializing in custom data extraction, delivering free data samples and over 800 completed projects in XLSX, CSV, JSON, or Google Sheets. Developed a cryptocurrency dashboard aggregating multi-exchange data with advanced filters, transaction views, and price alerts. Integrated data labeling, management system (Knime) with tagging, annotation, and custom label management features. Implemented data visualization; CSV processing for dynamic infographics and detailed analysis views. Built an adaptive trading bot interface with a responsive UI for seamless crypto transactions via Discord, Telegram. Strengthened expertise in React, Redux Toolkit, TypeScript, API integration, and interactive UI development for blockchain, financial platforms.
Skills
css
golang
javascript
react
typescript
vue
front-end
english
ukrainian