shprenger

Developed a legal cryptocurrency payment system for both customers and contractors, facilitating seamless crypto transactions. Achievements: - Designed and implemented the entire front-end architecture from scratch, encompassing dashboards, settings, accounts, invoices, and additional features. - Collaborated closely with the CEO and Product Designer to enhance user experience, ensuring intuitive UX flows within the interfaces. - Worked with the CTO to develop scalable features, increasing the system's adaptability and reusability. - Integrated the front-end application with back-end APIs, streamlining operations and enhancing functionality. Technologies: Front-end development, API integration, React JS, Typescript, Tailwind CSS, UIkit based on Storybook, Webpack Outcome: Successfully created a user-friendly and scalable payment system, significantly improving the payment process for users engaged in cryptocurrency transactions.

Enhanced the main landing page for PlayHT, focusing on performance improvement and visual redesign. Responsibilities: - SEO Optimization: Significantly increased Google PageSpeed and Lighthouse scores from 50 to 90, improving the site's search engine visibility and user experience. - Visual Redesign: Transitioned the website's theme to a modern dark mode, enhancing aesthetic appeal and readability. - Code Refactoring: Streamlined and optimized existing codebase for better maintainability and performance. - Content Expansion: Added new pages to enrich the site's content and user engagement. Technologies: Next.js, ReactJS, JavaScript, TailwindCSS, Axios, Sass, Firebase. Outcome: Successfully revitalized the PlayHT landing page, achieving a notable improvement in SEO performance and user experience while introducing a sleek new design.

I come to this project on team lead position on the initial step of project. The client goal was in creation the first version of web 3.0 marketplace and I created a backlog, built roadmap, hired team, built inner dev process and developed multifunctional website with web3 auth, blog (with headless cms) and marketplace. Finally in 3 month my team worked with high performance and finished web pages for marketing and frontend part of marketplace. Web app had the auth for 3 types of users via crypto wallets or email/password, Tech stack: Next.js, ReactJS, JavaScript, GraphQL, Hygraph, Scss, Web3.js

Objective: Developed a landing page and a comprehensive account management website for publishers utilizing recommendation and advertising mechanisms. Achievements: - Designed the UI/UX in collaboration with a designer, utilizing Storybook in Figma, to create a visually appealing and functional interface. - Implemented the site using Next.js and React.js, focusing on SEO optimization and fast loading times for account pages. - Integrated Highcharts for dynamic and interactive data visualization in charts and tables. - Recruited, mentored, and managed a team of developers, elevating four juniors to mid-level developers within a year. - Instituted flexible team processes and developed an analysis dashboard to monitor business metrics, preventing potential crises. - Launched an ads builder tool, enabling managers to craft customized ad blocks and saving developers 30% of their time. Technologies: Next.js, ReactJS, JavaScript, SCSS, Storybook, Axios, Sass, REST API, Figma Outcome: Delivered a high-performance publishing platform with optimized landing pages, enhancing the user experience and operational efficiency.

As a member of an outsourced team, I worked as a frontend developer on approximately 10 projects. My responsibilities included: • Developing responsive websites, SPAs, and e-commerce platforms. • Utilizing AngularJS, JavaScript, HTML5, CSS3, Sass, and Webpack to meet client requirements. • Ensuring cross-browser compatibility and performance optimization.