Frontend Developer Web Applications

https://www.linkedin.com/in/olha-sylevych

Olha Sylevych

Frontend Developer with 5 years of experience in developing responsive and scalable web applications. Skilled in React, TypeScript, Next.js, JavaScript (ES6+), and CMS platforms. Currently working at a software outsourcing company, delivering high-quality frontend solutions for international clients. Experienced in performance optimization, cross-browser compatibility, and creating intuitive user interfaces. Experience

Developed and maintained frontend solutions for 10+ international clients in EdTech, automotive, fintech, and environmental sectors as part of an outsourcing model. Worked on multiple projects in parallel, adapting quickly to different business domains and technical requirements.

Optimized web applications, improving page load speed by 40%. Led projects, managed teams, mentored junior developers, and conducted code reviews. Implemented best practices in Agile, actively participating in daily stand-ups, sprint planning, and retrospectives. Worked with modern tech stack: React, Vue, Next.js, TypeScript, Redux, RESTful APIs and more Received top client satisfaction ratings on Clutch for multiple successful project deliveries. Frontend Developer, Brights (Outsourcing Software Development Company) June 2021 - Present Frontend Developer

********.*@*****.***

+1-630-***-****, Chicago, IL

https://github.com/olha-s

https://gitlab.com/users/

Frontend Developer, BN Digital Jan 2021 - May 2021 Created React applications using JavaScript (ES6), TypeScript, React, React hooks, Formik, Yup, and Ant Design. Participated in code reviews and contributed to improving code quality. Worked closely with the design team to ensure technical feasibility of UI/UX designs. Freelance Junior Frontend Developer Mar 2020 - Dec 2020 Developed a commercial project using React within a team of 6 developers. Utilized technologies including React (with hooks), Redux, Formik, Yup, Material UI, React Testing Library, AJAX, Node.js, Express, and MongoDB.

Projects (Developed during my time at Brights, an outsourcing company) Shugaland Technologies, Shugaland (as Frontend Team Lead) Apr 2024 - Present Project Description: Shugaland is a dynamic platform featuring a promotional landing page and an admin panel designed for streamlined content management and user interactions. Responsibilities: Led development of a scalable frontend architecture using React and TypeScript. Translated Figma designs into pixel-perfect, responsive UIs with Tailwind CSS, reducing UI bugs by 30%. Integrated

@tanstack/react-query for optimized data fetching and state management. Ensured seamless integration with a custom CMS for dynamic content updates. Implemented Google Maps. Tech: React, @tanstack/react-query, TypeScript, Tailwind CSS, Custom CMS, Google Maps API, REST APIs, yarn, etc

Headway (as Frontend developer) Nov 2022 - Present Project Description: Headway is a global EdTech company Responsibilities: Built high-performance, SSR-enabled frontend with React and Next.js, improving load time by 40%. Integrated Storyblok CMS for flexible content delivery and GSAP for rich animations. Improved UX with Algolia-powered search and Calendly scheduling.

Tech: React, Next.js, Storyblok CMS, GSAP, Algolia, Calendly, Amplitude, Node.js, etc Technical Skills

Languages: JavaScript (ES6+), TypeScript

Frontend: React.js (Hooks, Redux, Thunk), Next.js, Vue.js, Nuxt.js, HTML, CSS, SCSS, Tailwind, Styled Components, Material UI, Ant Design, Chakra UI, Formik

Backend: Node.js, MongoDB, Firebase, REST APIs,

WebSockets

CMS: Storyblok, Squidex, Payload

Developer Tools: Git (GitHub, GitLab, Bitbucket,

Azure), npm, yarn, Postman, Vite, Webpack

Testing: Jest, React Testing Library

Responsive Design: CSS, SCSS, Flexbox

Suzuki (as Frontend developer) Sep 2021 - Mar 2022, now - development of new features and support Project Description: official distributor of SUZUKI cars and motorcycles in Ukraine Responsibilities: Created modular, scalable architecture with React and Next.js, enabling fast page creation. Delivered business-critical tools (credit calculator, model comparison, parts search). Integrated Google Maps API for interactive dealership locator across multiple cities. Collaborated on SEO improvements through dynamic meta content across dealer websites.

Tools & Technologies: React, Next.js, Storyblok CMS, Google Maps API, Node.js, etc Suits.ai (as Frontend developer) Sep 2023 - Apr 2024 Project Description: platform that provides AI-powered assistance Responsibilities: Built a responsive AI platform interface using React and Next.js with SSR optimization. Integrated Firebase for real-time database interactions and storage. Implemented WebSocket for live data updates and real- time collaboration. Integrated Clerk for secure authentication and session management. Tools & Technologies: React, Next.js, Firebase, WebSocket, Clerk, Algolia, etc Arsenal (as Frontend developer) Jul 2022 - Apr 2023 Project Description: Insurance Company

Responsibilities: Delivered performant Vue.js-based insurance portal with Nuxt.js and Squidex CMS. Integrated Google Maps for branch locator and dynamic address suggestions. Integrated secure payment gateways, enhancing UX and transaction reliability.

Tools & Technologies: Vue.js, Nuxt.js, Squidex, Google Maps API, npm, etc HorseDeal24 (as Frontend developer) Jan 2022 - Jun 2022 Project Description: Horse rental platform

Responsibilities: Developed a dynamic horse rental platform with React and Redux. Improved cross-browser performance and ensured mobile-first design.

Tools & Technologies: React, Redux, MongoDB, npm, etc Earth foundation (as Frontend developer) May 2022 - Sep 2022 May 2021 - Sep 2021 Project Description: The Earth Prize, an annual, global environmental sustainability competition Responsibilities: Developed both the official website and a scalable Learning Management System (LMS) for The Earth Prize — a global sustainability competition. Built the platform using React and Next.js, integrating Storyblok CMS to manage dynamic content for the LMS. Optimized performance, improved security, and reduced hosting costs, while supporting 1,000+ students and administrators. Tools & Technologies: React, Typescript, Next.js, Storyblok CMS, npm, etc Erudition PAT (as Frontend developer) Jun 2021 - Aug 2021 Project Description: learning platform

Responsibilities: Developed an interactive learning platform for dental students using React and Next.js. Created data visualizations and integrated a custom CMS for content flexibility. Tools & Technologies: React, Typescript, Next.js, npm, etc Education

Frontend developer Jan 2020 - Dec 2020

International innovative educational center DAN.IT Education Master of Economic Theory Sep 2000 - Jul 2005

National Technical University

Kruk (as Frontend Team Lead) Mar 2024 - Jun 2024

Project Description: volunteer project for the defense forces of Ukraine Responsibilities: Led frontend development using Vue and Nuxt.js for a national defense volunteer initiative. Delivered fully responsive, multilingual interface with seamless Storyblok CMS integration. Integrated secure payment service via LiqPay to support donations and user contributions. Tools & Technologies: Vue, Nuxt.js, Storyblok CMS, LiqPay API, etc

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