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Sergii D. Status: Offline
Odessa, Ukraine
100% Job Success
Top Rated Plus

Front end Developer React JavaScript Web Developer LONG-TERM PROJECTS

⭐️⭐️⭐️⭐️⭐️ Top 1% Expert-Vetted Web Developer on Upwork 📍 No short-term projects. Sorry. 📞 Kick-off with the team is a mandatory step. 🧨 Availability for a quick project start. ★ Top-100 Service Provider by Clutch ★ 500M+ Raised by our clients ★ 99+ International Awards ★ 15 years of expertise with clients like: NOKIA, OPERA, OPPO, UDEMY, COREL, CREATIVE MARKET, AUTH0 etc. Welcome to my profile page: 👨‍💻 I am a front end developer with 10+ years of experience in the IT industry, working across a wide range of projects and industries. Over the years, I’ve honed my skills with modern front end technologies, consistently delivering high-quality projects using React, Typescript, NextJS, Vue. 🏆 Expert-Vetted front end developer. 🏆 Head of development at The Best Creative Agency in Ukraine 2018 by Upwork. 🏆 Managed projects for 20+ Upwork clients and delivered over 50 fully developed products. My main skills: ・10+ years of experience and over 100 projects made with React, Redux, GraphQL, Next, Gatsby, Vue, JavaScript (ES6-ES8), Typescript, NodeJS, Express, NestJS, Fastify. ・Redux, Redux-Saga. ・MongoDB, PostgreSQL, MySQL. ・Scss, Sass, PostCSS, HTML5, CSS3. ・Building maintainable design systems with Storybook. ・Client-side performance including AMP and PWA apps. ・Accessibility, 508 Compliance support. ・SEO Optimization. ・Cross-browser/cross-platform manual testing. ・Automation QA: Cypress, Puppeteer, Playwright, Jest, Selenium. ・Tooling: Webpack, Git, NPM. I am a web developer with full-stack experience. I work on both the front-end and back-end. I know HTML5, CSS3, and JavaScript (JS). I use frameworks like React (ReactJS), Node.js, Express.js, TypeScript, NestJS, Next.js, and Nuxt.js. I build fast websites with Gatsby and GraphQL. For front-end, I use Bootstrap, Tailwind CSS, and Sass to make websites look good and work well. For back-end, I connect to databases like MongoDB, PostgreSQL, MySQL, and DynamoDB. I use AWS, Google Cloud, and Microsoft Azure to run apps. I build RESTful APIs to connect the front-end and back-end. I use Git, GitHub, and GitLab for version control. I use Firebase for real-time database management and Cypress for testing. I create SaaS solutions for businesses. I build CMS websites with WordPress, Shopify, HubSpot, Craft CMS, and Ghost CMS. I use Jira, Trello, and Asana for project management. I use Slack and Microsoft Teams for team communication. I handle all parts of web development. I deliver high-quality results for clients.
Work history
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Skills

Skills

  • HTML
  • React
  • Web Development
  • CSS
  • HTML5
  • Node.js
  • JavaScript
  • Bootstrap
  • CSS 3
  • jQuery
  • WordPress
  • Angular
  • Web Design
  • Vue.js
  • Landing Page

Get started working with Sergii quickly with these predefined projects.

Get started working with Sergii quickly with these predefined projects.

You will get a web app from expert front end developer | NodeJS, ReactJS, PostgreSQL

From $6,000
70 days delivery

You will get seamless CMS from expert front end developer | Sanity, Prismic, Strapi

From $2,500
30 days delivery

You will get Web App in 3 months from expert front end developer | NextJS, NodeJS, React

From $5,000
70 days delivery

You will get Open AI Integration | GPT-3.5 | ReactJS from expert front end developer

From $500
5 days delivery

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