Резюме: Full-Stack Developer with Strong Cybersecurity Foundation (Вінниця)

Досвід роботи

• Full-Stack Developer — 3 CRM Systems Mappitall <p></p>
  <p>Technologies &amp; Skills:</p>
  <p>TypeScript, JavaScript, React.js, React Hooks, Redux, Node.js, Express.js, PostgreSQL, Mapbox GL, REST API, i18next, Lodash, Day.js, HTML5, CSS3, SASS/SCSS, Git<br /><br />Key Achievements &amp; Responsibilities:</p>
  <ul><li>Led full-stack development of 3 production CRM systems (2 pipeline monitoring platforms for Sweden, 1 real estate CRM for the US).</li><li>Designed and implemented interactive maps, dashboards, and real-time data visualizations for infrastructure monitoring and analytics.</li><li>Built scalable client-server architecture, integrated REST APIs, and optimized performance for complex data-driven interfaces.</li><li>Delivered maintainable solutions with focus on UX, performance, and long-term scalability.</li></ul>
  <p></p>
• Full-Stack Developer — Desktop Game Development Self-Learning / Personal Game Development <p>Technologies &amp; Skills:</p>
  <p>TypeScript, Electron, Pixi.js, Howler.js, CSS3, Vite, modular architecture, event-driven programming, game mechanics, physics simulation<br /><br />Key Achievements &amp; Responsibilities:</p>
  <ul><li>Developed a desktop Arkanoid game from scratch using modular, event-driven architecture.</li><li>Implemented core game mechanics: physics simulation, paddle control, collision detection, and user interaction.</li><li>Designed clean, maintainable code structure focused on performance and extensibility.</li><li>Gained hands-on experience in project planning, debugging, testing, and iterative improvement.</li></ul>
  <p>My personal projects:</p>
  <ul><li>(Game) tinyurl.com/mw82s48k</li><li>(Website) banderogus-from-ukraine.netlify.app/</li></ul>
• Front-End Developer — Real-Time Taxi CRM &amp; Maps Mobilauto <p>Technologies &amp; Skills:</p>
  <p>TypeScript, JavaScript, React.js, React Hooks, Redux, Redux Toolkit, UIkit, Styled-components, SASS, i18next, Lodash, Date-fns, PWA, Webpack, Visicom Maps, SIP, VoIP, WebRTC<br /><br />Key Achievements &amp; Responsibilities:</p>
  <ul><li>CRM Frontend Development: Designed and developed a high-performance CRM frontend with interactive maps, GPS tracking, route calculation, dynamic pricing zones, and complex data tables, optimizing real-time updates and large datasets.</li><li>Full-Stack Integration &amp; Architecture: Built scalable client-server architecture, integrated REST APIs, and ensured seamless communication between frontend and backend systems for reliable data processing.</li><li>Real-Time Communication &amp; PWA: Implemented SIP for VoIP calls and status updates between dispatchers and drivers, and developed Progressive Web App functionality, enabling offline access, push notifications, and improved mobile performance.</li><li>Process Automation &amp; UX Optimization: Automated taxi order lifecycle (clients, agents, contractors, tariffs, payments), improving workflow efficiency and user experience, while ensuring maintainable and secure code.</li></ul>
• Full-Stack Developer — E-commerce Platform &amp; Admin Portal Noname Digital <p>Technologies &amp; Skills:</p>
  <p>JavaScript, JSX, React.js, React Hooks, Redux, Node.js, Express.js, MongoDB, HTML5, CSS3, SASS/SCSS, Git, REST API, Firebase<br /></p>
  <p>Key Achievements &amp; Responsibilities:</p>
  <ul><li>Delivered full-stack e-commerce platform from scratch, covering client, server, and admin functionality.</li><li>Implemented order processing, product catalog management, and interactive UI components.</li><li>Integrated payment systems and transactional workflows to support real business operations.</li><li>Ensured stable API communication and maintainable application architecture.</li></ul>
• Full-Stack Developer — Legal CRM &amp; Client Portal (Web + Mobile) Lawyer association "Defense" (AO Zahist) <p>Technologies &amp; Skills:</p>
  <p>JavaScript, JSX, React.js, React Hooks, React Native, Redux, Node.js, Express.js, MongoDB, HTML5, CSS3, SASS/SCSS, Ant Design, Git, REST API, Day.js, Google Drive API, Webpack, PWA, MailerSend, Firebase, CRM, automation, document management<br /></p>
  <p>Key Achievements &amp; Responsibilities:</p>
  <ul><li>Full-Stack CRM Development: Built web and mobile CRM systems and business websites from scratch, covering client and server functionality, automating the full client case lifecycle, and improving operational efficiency.</li><li>Data Management &amp; Analytics: Designed and implemented complex tables, document management, analytics dashboards, and payment tracking features, enabling data-driven decision-making and workflow automation.</li><li>PWA &amp; Mobile Optimization: Developed Progressive Web App functionality for offline access, push notifications, and enhanced mobile UX across platforms.</li><li>Email Automation &amp; Client Communication: Integrated MailerSend to create automated email pipelines, notifications, and subscription workflows, enhancing client engagement and retention.</li></ul>
  <p>My commercial projects:<br />(open-source and currently maintained)</p>
  <ul><li>zahist.ua/</li><li>play.google.com/store/apps/details?id=com.zahist.client</li><li>zahist.in.ua/</li><li>client.zahist.ua</li></ul>
• Full-Stack Developer — Web &amp; Mobile Applications Software development service provider "Softenix" <p>Technologies &amp; Skills:</p>
  <p>JavaScript, React.js, Redux, Node.js, Express.js, MongoDB, HTML5, CSS3, PHP, WordPress, jQuery, Git, REST API, Figma, React Hooks, UI/UX design, Angular<br /></p>
  <p>Key Achievements &amp; Responsibilities:</p>
  <ul><li>Developed web and mobile applications for internal and external clients.</li><li>Implemented UI/UX designs and integrated backend services.</li><li>Worked on full-stack features including data handling, APIs, and user interfaces.</li><li>Collaborated with designers and stakeholders to deliver production-ready solutions.</li></ul>
• Software Engineer — Enterprise Security &amp; Internal Applications Ukrainian Postal Service (Ukrposhta) <p>Technologies &amp; Skills:</p>
  <p>JavaScript, HTML5, CSS3, PKI, cryptography, key management systems, ERP, embedded systems, TCP/IP, FTP<br /></p>
  <p>Key Achievements &amp; Responsibilities:</p>
  <ul><li>Developed internal enterprise software for large-scale organization.</li><li>Worked with cryptographic protection systems, digital certificates, and key management infrastructure.</li><li>Supported secure data exchange and software cryptography solutions.</li><li>Participated in ERP and ARM-based embedded systems integration.</li></ul>
• Technical Support Engineer — Network &amp; Infrastructure Telecommunications company "TENET" <p>Technologies &amp; Skills:</p>
  <p>TCP/IP, HTTP, HTTPS, FTP, DNS, DHCP, network configuration, monitoring, security policies<br /></p>
  <p>Key Achievements &amp; Responsibilities:</p>
  <ul><li>Configured and maintained network equipment and enterprise infrastructure.</li><li>Supported DHCP/DNS servers and network security policies.</li><li>Monitored network traffic and participated in modernization projects.</li><li>Ensured stable and secure operation of telecom services.</li></ul>