Project: Progressive Web Application (PWA) platform for mobile product distribution and subscription-based services.
Tech Stack: React, Formik, Bootstrap, CoreUI, Laravel PHP, PostgreSQL, Docker, Beekeeper StudioResponsibilities & AchievementsMaintained and enhanced existing application features, ensuring stability and improving user experience.

- Designed and developed new pages and administrative interfaces with complex dynamic forms, including multi-select components, automated link generation, database-driven fields, and conditional business logic.

- Built and integrated RESTful APIs for creating, updating, deleting, and retrieving application data.

- Conducted a comprehensive technical audit of the project, identifying architectural weaknesses, performance bottlenecks, and critical issues, followed by actionable improvement recommendations.

- Optimized frontend performance through caching strategies, React hooks, bundle cleanup, code refactoring, and reduction of unnecessary DOM complexity.

- Diagnosed and resolved critical bugs causing UI failures, broken workflows, and application crashes.

- Developed interactive notifications and user feedback mechanisms based on backend responses.Implemented analytics, reporting, and statistical business logic using PHP and Laravel.

- Developed both frontend and backend functionality for subscription billing and usage-based payment processing.

- Created dashboards, charts, and data visualizations for business metrics and reporting.Improved backend performance by optimizing database queries, application logic, and server-side processes.

- Designed and implemented database schemas, including one-to-one, one-to-many, and many-to-many relationships.

- Developed and maintained database migrations, seeders, and related infrastructure.Implemented localization features and extended multilingual application support.

- Performed application logging and flow analysis to troubleshoot and monitor system behavior.

- Wrote automated tests to improve application reliability and maintainability.

- Developed scheduled background jobs for recurring subscription billing and automated payment processing.

- Participated in the hiring process for React Developers, conducting technical interviews, evaluating candidates' React, JavaScript, and frontend development skills, and providing hiring recommendations to the team.

- Mentored a junior developer, providing code reviews, technical guidance, and support in day-to-day development tasks.Reason for Leaving: Project closure due to a significant decline in organic traffic and business demand.

- Conducted a comprehensive review of the entire project.
- Fixed build issues based on the review, including splitting the JS bundle into separate files (original bundle exceeded 500 kB).

- Provided a list of recommendations to improve frontend performance, styling, and overall UX.

- Performed full Lighthouse analytics (FCP, LCP, SEO, Performance) and offered actionable improvement suggestions.

- Developed web pages according to Figma designs and implemented cinematic 2D animations.Refactored and optimized components for better performance and maintainability.

- Replaced the old Canvas-based interactive world map with an SVG-based solution, enabling interactive highlighted countries and fully optimizing the logic for efficient display of over 2,700 coordinate points.

- Integrated various backend endpoints for retrieving, updating, and creating data.

- Adapted the project for responsiveness across different devices and screen sizes.Reason to leave: we were not the right mutual fit.

Collaborated directly with an international client and their team,leveraging strong English communication skills.
Contributed to 4 projects: 3 as part of a team and 1 as a sole developerresponsible for the full implementation.
Worked with a modern tech stack including React.js, Next.js,TypeScript, JavaScript, Shadcn UI, TailwindCSS, and varioussupporting libraries.
Optimized applications by refactoring components and improvingperformance.
Migrated components from React Aria to Shadcn UI for consistencyand better integration.
Rewrote an application to align with a new Feature-Sliced Design(FSD) architecture.
Implemented advanced document processing features using ReactPDF Viewer and a custom extension to detect keyword annotations,calculate coordinates, and enable smooth navigation withindocuments.
Developed and validated authentication forms with React Hook Formand Zod.
Worked with Swagger-based APIs, actively using Axios and TanStackQuery for fetching, creating, updating, and deleting data.
Displayed server-side data in dynamic tables with filtering, sorting,keyword search (with debounce), and pagination.
Extended Shadcn UI components to meet business logicrequirements.
Built pages, templates, and layouts based on Figma designs, whilecollaborating closely with designers.

• Project development using React.js / Next.js / Hooks;
• Designing functional solutions using JavaScript / TypeScript;
• Layout of website templates using TailwindCSS;
• Develop and support 2+ projects;
• Using shadcn/ui for re-usable components;
• Bugs and Layouts xed; Worked with dates from DB (Directus);
• Create combo lters stage on urls (dynamic routes);
• Code Refactoring (Decomposite and optimization components);
• Code Review;
• Worked with SSR, SSG, ISR;
• Interview candidates;

• Project development using React.js / Gatsby.js / Hooks / Redux;
• Designing functional solutions using JavaScript / TypeScript;
• Layout of website templates using Material UI and Figma;

• Project development using the Vue.js / Vuex / React.js / Redux / Hooks framework;
• Layout of website templates using HTML5, CSS3, Figma with Pixel Perfect.
• Experience with SASS/SCSS/LESS preprocessors;
• Designing functional solutions using JavaScript / TypeScript;
• Experience with JSON, LocalStorage, RestAPI, HTTPrequest, WebHooks;
• Experience with a database (Firebase, MySQL PhpMyAdmin, MongoDB);
• Creating a browser extension project using manifest ver-3;