Daniil Demenev Email & Phone Number

Novi Sad, Vojvodina, Serbia

St Petersburg, St Petersburg City, Russia

Projects:- Studio. Developed a dynamic Studio interface for creating customizable business logic chains. Innovatively introduced the capability to integrate custom functionality using iframes, enhancing the versatility of the platform. Initiated the adoption of TypeScript and orchestrated a seamless migration of the project from JavaScript. Actively contributed to optimizing the rendering performance of the project's pivotal feature, the SVG canvas, ensuring a responsive and efficient user experience.- Control Plane. A system for monitoring and deploying projects using Studio, with the ability to organize a CI/CD pipeline from the UI. The project introduced a feature for embedding third-party applications, utilizing a microfront architecture and Webpack Module Federation for flexibility and extensibility. We optimized communication with the backend through react-query and code generation via Orval.- UI-kit. Expanded the set of basic components. Implemented table and list components that support virtualization of up to 100 thousand elements on weak devices. Optimized the bundle size.Achievements:- Engineered and crafted microfrontend architecture, minimizing resources required for embedding existing client applications and slashing time-to-market for integrated applications- Enhanced SVG-canvas rendering for low-performance devices, elevating the frame rate from 15 to 60 FPS- Enlarged the component library for 4 teams, doubling the development speed of standard elements- Reduced the size of the bundled component library and Critical Rendering Path (CRP) in projects by 50%- Contributed to the generation of the company's competency matrix structure and the knowledge base for a team of over 100 frontend developersTechnologies:Redux + RTK, Effector, Monaco Editor, Tailwind, NodeJS (Express - BFF), Webpack + Module Federation, Rollup, tsup, MSW, React Query, TanStack Virtual, Posthog.js, Storybook

St Petersburg, St Petersburg City, Russia

Projects:- Business intelligence platform, similar to Tableau. Crafted a comprehensive ETL flow and analytical visualization system powered by OLAP cubes. Key achievements include implementing robust data processing capabilities, enabling the visualization of massive datasets using WebWorkers, ECharts for charts, and deck.gl for geospatial data. Designed the entire project with scalability in mind, organizing it into packages within a monorepository using Lerna. Created a highly performant single-page application (SPA) using ViteJS with Client-Side Rendering (CSR). Employed GraphQL and Apollo for complex API queries, introducing code generation for streamlined API interaction. Implemented automated processes, such as static testing, code formatting (ESLint/Stylelint/TypeScript), and unit testing (Jest), to effectively manage a project exceeding 100,000 lines of code.Achievements:- Created a frontend team from the ground-up to a fully organized department- Engineered a Big Data platform with the ability to visualize over 1 million points concurrently, facilitating the migration of almost all functionality from native applications to a web browser- Developed 3 different BI platforms with common core functionality for visualization- Designed boilerplates for diverse projects, cutting the setup time for new clients from 2 hrs to 30 mins- Mentored 3 frontend developers, assisting them in progressing from junior to middle specialistsTechnologies:ECharts, Mapbox, MobX, Draft.js, CSS modules, JSS, NodeJS (Express), TypeScript (Project references), ESLint, Stylelint, TSLint, Prettier, Jest, NextJS, ViteJS, lerna

St Petersburg, St Petersburg City, Russia

Projects:- Single Operational Response Center, streamlining emergency services' response to critical situations via a unified entry point. Employed SPA architecture with CSR, leveraging technologies like MobX and Apollo for efficient data storage and management.- Сity newspaper's website. Implemented Backend For Frontend (BFF) for Server-Side Rendering (SSR) using React. The initial version prioritized mobile optimization (TTFB, TTI, CRP) and SEO, ensuring optimal performance and search engine visibility.- Developer's website. Successfully created a developer's website, initially utilizing Ruby on Rails for SSR in conjunction with AngularJS (v1). Transitioned to React + react-rails for SPA architecture, focusing on enhancing the apartment selection experience, seamless animations, and SEO optimization.- Mobile training application. Designed and developed a cross-platform mobile training application using React Native, making it available on both the App Store and Play Market.Achievements:- Developed and launched a new web version of the newspaper, boosting daily user traffic 10 times- Created a client system for aggregating calls to emergency services, significantly speeding up decision-making more than 4 times- Delivered a remote ticket purchasing project, cutting the projected time for ticket issue by 60%Technologies:Three.js, Leaflet, Native Canvas, react-motion, GreenSock, Redux, MobX, EditorJS, CSS modules, Styled-components, emotion, PostCSS, RoR, Flow, JSDoc, Webpack, Gulp, Mocha, React, React Native, AngularJS (v1)

St Petersburg, St Petersburg City, Russia

Projects:- FIFA World Cup ticketing website. Developed a ticket issuance website for the 2018 FIFA World Cup, taking a pragmatic approach by creating a Multi-Page Application (MPA) using Ruby on Rails. Enhanced user experience by introducing dynamic functionalities with CoffeeScript, ensuring a seamless ticketing process.- Football match information and fan movement monitoring system. Engineered a comprehensive system to monitor football match data and fan movement statistics using D3.js.- Additional Projects. Independently managed and contributed to various projects, including mobile newsletter layout design, website layout optimization for compatibility with IE8, and the development of engaging mini-games using Matter.js. Additionally designed and developed a robust backend API using Ruby on Rails with Active Record and PostgreSQL, ensuring efficient data management and retrieval.Achievements:Established a system for monitoring statistics on transport use during football matches, which simplified data analyticsTechnologies:D3.js, Redux, SCSS, RoR, Flow, JSDoc, Webpack, React

Master Of Information Systems And Technologies

Bachelor Of Information Systems And Technologies