JustControl.it is a marketing data analysis platform with flexible ELT capabilities.TechnologiesHTML, Pug, CSS/SCSS, JavaScript, TypeScript, Angular, RxJS, Nx, NgRx, NGXS, D3, Clarity, React, Svelte, NestJS, Node.js, PHP, Bash, MongoDB, PostgreSQL, NGINX, Docker, Gitlab, Karma, Jasmine, Jest, Figma, StorybookExperienceProduct's micro‑service architecture and very loose coupling between backend and frontend applications means that frontend team is also responsible for developing BFFs (backend for frontend) which contain frontend‑only business logic and implement low‑level APIs' abstractions.Starting in a team of two I've been responsible for solving complex problems such as:- Optimize frontend app build pipeline for single tenant deployment decreasing it's time complexity from linear to constant.- PEG based DSL to enable quick and easy data filtering.- Graphical ELT pipeline editor.- Data visualization using D3.- Market and user analysis with the aim of increasing product value and improving UX.I also took part in team management as an interviewer and a team leadresponsible for writing candidate requirements, testing candidates and guidingnew team members, directing day‑to‑day activities and representing frontendteam within inter‑team communications.

Technologies:HTML, CSS/SCSS, JavaScript/TypeScript, WebSocket, Service Workers, Angular(2/4/5/6/7), RxJS, NgRx, React, Vue.js, Nuxt.js, Webpack, Node.js, Golang, C#, .NET, Docker, NGINX, Karma, Jasmine, ProtractorResponsibilities:- Designed architecture and developed Angular applications and component libraries (data grids, notification system, etc.)- Configured webpack manually to improve build times both for developement and production environments which led to better feature delivery times- Wrote unit and e2e tests for Angular applications- Migrated several complex Angular applications from custom webpack build configurations to Angular CLI- Implemented and set up server-side rendering for a Vue.js product website for better SEO- Set up frontend CI/CD on GitHub/Gitlab/Google Cloud- Performed technical maintenance of frontend applications- Reviewed team's code and provided detailed feedback- Automated frontend development environment setup to speed up introduction of new team members- Have interviewed several candidates for frontend developer positions- Was introducing and mentoring new frontend team members- Maintained application repositories- Released frontend applications to stage and production environments including related tasks (Jira releases and VSC release tags)- Gave product demonstrations to clients

Technologies:PHP5/7, HTML, Pug, Handlebars, Gulp, CSS/SCSS, JavaScript/TypeScript,Angular(2/4), RxJS, jQuery, Node.js(Express), MySQL, MS SQL, RabbitMQ,Docker, AWS, Apache, NGINXResponsibilities:- Designed and developed CMS with a website generator to improve client's business model performance- Collaborated in development of full stack web application with complex reports generation- Performed DevOps routines for a complex of REST microservices- (Node.js), applications (PHP) and databases (MySQL)- Performed server administration (CentOS, ArchLinux)- Supported legacy PHP projects- Developed an application with encapsulation of business logic inside stored procedures (Transact-SQL)- Migrated PHP application from MySQL to MS SQL- Delivered database deployment and production server updates

Technologies:HTML, CSS, JavaScript, jQuery, PHP, Oracle RDBMS, ApacheResponsibilities:- Full stack development- Performed quality assurance for active projects

Technologies:HTML, CSS, JavaScript, jQuery, PHP, C++, MySQL, Google AdWords, YandexDirect, ApacheResponsibilities:- Helped clients to create prototypes and prepared technical requirements for websites- Tested existing projects and improved their quality- Developed websites (frontend and backend)- Performed SEO optimizations to increase profits- Advertised websites (Google AdWords, Yandex Direct)