Sergey Semenov Email and Phone Number

Participation in the development of the company's application, admin panel and reporting, which includes the following key functions:• Development of functionality, integration with other systems in accordance with business requirements;• Working with the REST API in swagger;• Layout based on the layout in Figma;• Implementation of the WebAPI system on the client side of the browser and a third-party API;• Maintaining documentation;• TypeScript implementation, reducing the number of bugs in features at the release stage;• Code refactoring (Dumb & Smart Components, ctrl, components, wrappers, transfer widgets, helpers...);• Migration of the project from WebPack to Vite, acceleration of deployment and build time by 2 minutes;• Migration of the project from CSS to JoyUI (Material UI), using components with global options;• Conducting peer code review, code review with mentoring;

Development and support of the company's internal services.Responsibilities:• Layout based on Figma;• Development of components and high-load components on React using TypeScript;• Development of logic on micro fronts in the calendar project;• Optimize the application, eliminate bugs, reduce page load;• Code review, conducting peer code review;• 75% unit test coverage;• Analysis of business tasks and technical specifications, formalization of requirements, identification of implementation opportunities, prioritization of tasks;• Interaction with testers, backend developers, designers (Agile);

Development of commercial projects in a team.Recent (custom) projects:1. Hikers - It's a travel search and planning service for people who love extreme and active sports.2. Zvukoblako - it's a service for exchanging melodies.3. Favorite tea - an information service for searching, evaluating and adding tea varieties around the world, etc.Developed and implemented:- user interface based on functional components React with React Bootstrap and Geist UI;- architecture and application logic for special tasks;- solving problems using algorithms;- authorization and registration;- hashing passwords with using bcrypt;- state storage with using Redux Toolkit;- routes and moving through the application;- chat for messaging between app users;- API app by REST;- download audio using multer;- personal account;- the logic of the administrative part;- development models, migrations, seeds.Stack of project:Frontend: JavaScript, React, Redux, Redux Toolkit, Geist UI, React Bootstrap, Figma, CSS, SCSS, Geist UI, React Bootstrap, GitHub;Backend: JavaScript, Node.js, Express, PostgreSQL, Sequelize, SSR.

A brand of jewelry.Developed and implemented:- user interface based on functional components React;- the logic of the administrative part;- navigation of the app;- routes and moving through the application;- filtering of products;- adaptive layout for mobile devices.Stack of project:Frontend: JavaScript, React, Redux, Redux Toolkit, CSS.