(2M+ monthly users, $100M+ annual revenue)
One of the largest ticket operators KASSIR.RU provides booking and ticket sales for all events in Saint Petersburg, Moscow, and other cities.
https://msk.kassir.ru/

Platform: Web
Stack: Nuxt3, Vue3, Pinia, Taiwind, TypeScript

Storefront redesign: Designed and implemented the frontend from scratch, resulting in a significant conversion rate increase and a 40% reduction in page load times
Component library: Built a scalable UI component library in TypeScript, accelerating team development speed and simplifying long-term maintenance
Admin panel migration: Led the migration of a legacy admin panel from Vue 2/Vuex to Vue 3/Pinia, significantly reducing technical debt and improving stability
Analytics integration: Set up an advanced tracking system (Yandex.Metrica, RetailRocket), enhancing the accuracy of user behavior and conversion analysis
Content management tool: Developed a custom SVG-to-JSON converter for visual content in the admin panel, cutting manual content management tasks by 50%
QA mentoring: Mentored QA engineers in API testing with Postman, improving both automated test coverage and manual testing quality
Legacy system support: Maintained critical functionality on the legacy PHP Yii + jQuery platform during the transition phase, ensuring smooth operations

(largest private bank with 34.5M+ retail customers and 1.8M+ SME clients)
A section within a major Russian bank's app for purchasing tickets to museums, exhibitions, and concerts. Integration of a ticketing system within a banking application,
https://alfabank.ru/apps/

Platform: WebView
Stack: React, React Router, React Hook Form, TypeScript

Performance: Implemented efficient state management using React Context, boosting overall app performance
API optimization: Developed custom hooks based on useEffect for REST API interactions, reducing backend load by 50%
Stability: Conducted system error analysis and classification using Graylog, significantly lowering the number of critical failures
UI/UX: Created fast, responsive interfaces with Tailwind and CSS-in-JS that look great on any device
APIs & State: Worked with REST APIs, WebSockets, and Zustand for real-time, seamless experiences
Component-driven approach: Maintained and expanded the bank’s design system, strictly following internal standards and UX guidelines

Admin panel to manage events and activities in different cities on the site

Platform: Web
Stack: Vue2, VueX, Vuetify

Interface and development speed: Developed over 15 responsive admin panel pages using Vuetify, enabling rapid development pace and a consistent UI style across the entire project
Routing system: Designed and implemented advanced routing with Vue Router, including lazy loading and route guards, reducing navigation errors
State management: Created a scalable Vuex architecture with centralized API calls and caching, decreasing data-related bugs and improving overall performance
Legacy code refactoring: Migrated more than 20,000 lines of jQuery code to a modern Vue.js architecture, cutting the project’s technical complexity by 50%

Ticket sales on partner sites
https://crocus-hall.ru/events/stas-pekha/

Platform: Web
Stack: Preact, PostCSS

Business growth: Developed and enhanced the ticket widget, expanding the partner network by over 30 new platforms
Localization: Implemented full English localization, increasing engagement from international users and opening access to new markets
Flexible customization: Designed a CSS configuration system enabling partners to independently customize the widget’s appearance, reducing custom requests by 50%
Order improvements: Added new order fields via REST API, decreasing the need for manual data entry
UX optimization: Completely redesigned the checkout page, cutting load time from 2.2 to 1.1 seconds and reducing bounce rates by 20%

(2M+ monthly users, $100M+ annual revenue)
Airtickets agency which works with Aviasales and Skyskanner and helps search thousands of cheap tickets and cheap flight offers to your favorite.
https://superkassa.ru/

Platform: Web
Stack: React, Redux, Redux-Saga

Architecture migration: Migrated the client-side to a modern stack (React + Redux + Redux-Saga), accelerating page load times and simplifying code maintenance
Mobile growth and conversion: Implemented fully responsive design, increasing mobile traffic and conversion rates by 30%
Reliability and quality: Introduced TypeScript, significantly reducing production bugs
Business features: Designed and developed the “Super Points” loyalty system, boosting repeat purchases by 25%
Universal templates: Created adaptive interface templates ensuring stable performance across various devices and screen resolutions
Analytics: Configured user analytics infrastructure in Yandex.Metrica with tracking of 100+ events, enhancing product analytics accuracy

CRM for Restaurant delivery service where you confirm your meal with a click, pay instantly and get your favorite dish hot and fresh in close to no time, delivered right to your doorstep.
https://2-berega.ru/spb/

Platform: Web
Stack: Vue2, Typescript

Customer segmentation: Developed and implemented advanced segmentation tools in the CRM, improving franchisee targeting accuracy
UX optimization: Introduced new website sections, enhancing the user journey and reducing average order completion time
Delivery integration: Integrated Delivery Club API, expanding delivery coverage by 70% and increasing orders by 30%
CRM performance improvement: Optimized business logic, speeding up interface response and reducing user operation times
Content module: Created an advertising content management tool that shortened campaign launch times and decreased errors
Team training: Mentored a content management team handling 7 websites and mobile apps, accelerating publication processes and reducing mistakes
Marketing automation: Collaborated with marketing to enhance SMS and push notification systems, boosting customer engagement

Helps people to begin to study the runes (fascinating and mysterious symbols from the ancient Norse/Germanic world)
https://senior-frontend-alan.github.io/runes/

Platform: Web
Stack: jQuery, HTML+CSS

• Created design concept using Photoshop
• Implemented fully responsive web pages using semantic HTML5 and CSS3, achieving cross-browser compatibility across 5 major browsers and reducing mobile rendering issues
• Engineered page animations and interactive elements using jQuery that decreased user time-to-engagement

Interactive help tool that helps English language learners with grammar.
https://senior-frontend-alan.github.io/english-tenses-generator/

• Created design concept using Photoshop
• Implemented fully responsive web page using semantic HTML5 and CSS3, Material UI + React