Maks – React, Next.js, React Query

Large-scale platform infrastructure for a global Jewish organization, powering hundreds of portals across events, schools, programs, volunteer management, shop, and network operations worldwide.

• Migrated multiple legacy platforms from Mithril to React (including shluchim-portal, web-org, and others), modernizing codebase maintainability and developer experience
• Designed and implemented a standalone, reusable document recognition package as an independent library integrated across the platform ecosystem
• Built resource-album-app with a custom page builder featuring modular customization blocks and UI virtualization for performance at scale
• Integrated a shop module into resource-album-app and delivered additional packages including reports-builder and course-outline
• Implemented a new volunteer platform with a public-facing editable page view, opportunity creation, and application tracking management portal
• Delivered a new version of the org management platform
• Actively used AI-assisted development tools (Claude Code, Claude Designs, Cursor) throughout the engineering workflow to accelerate implementation and maintain code quality across a large, multi-stack monorepo

Gas reporting and management platform enabling companies to generate, manage, and export complex gas usage reports with advanced calculation logic and company-level access control.

• Designed and implemented the full-stack architecture for the reporting system end-to-end
• Built authentication and user management flows using Supabase
• Developed an advanced calculation engine for accurate, regulation-compliant gas reporting
• Implemented company-level management features with scoped access and data isolation
• Built report export functionality with full PDF generation of detailed gas usage reports
• Optimized backend and database performance to handle heavy computation loads at scale
• Created reusable UI components and dashboards using Next.js, Tailwind, and shadcn/UI

A hotel booking platform that allows users to get access to exclusive private rates for accommodation from partners all over the globe. The platform provides 24/7 customer care support, providing personalized real-time help for members.

• Built a search feature with filtering, integrated backed API to search and display booking options
• Integrated authentication and user profile features, including management of available deals and saving opportunities
• Implemented feature flags with GrowthBook for controlled releases of new features
• Enhanced design system with Storybook for design consistency and accelerated development
• Created component tests with Cypress to ensure components' functionality and application reliability
• Conducted code refactoring on various pages to enhance code quality and improve app performance

Internal SDK and component library for an existing passport scanning system used across hotels and related hospitality businesses. Focused on building a modern, maintainable layer on top of a legacy PHP backend.

• Architected and implemented a reusable component library integrating seamlessly with the existing PHP backend
• Built a complex table component system using AG Grid Enterprise, handling large-scale data rendering with advanced filtering, sorting, and customization
• Designed and implemented an EntitySharedJSON system providing a universal, unified entity structure across the SDK
• Developed a NestJS-based Backend-for-Frontend (BFF) as a dedicated testing environment for the SDK
• Established a testing suite with Jest and React Testing Library ensuring component reliability across consumer integrations

Automated website accessibility solution that builds a groundbreaking technology that is designed to make the internet accessible and inclusive for everyone around the world. It provides tools to automatically find and fix code errors and do web accessibility right.

• Implemented UI of the accessibility widget with custom and reusable components
• Developed core UI and logic of the admin portal for the internal team, including analytics, user management, and subscription management
• Integrated third-party analytics tools to track custom events and usage of the product
• Covered critical components and logic with unit and E2E tests using Jest and Cypress