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Eryk Bębynek

@erykbbynek

Senior software engineer building scalable, data-heavy web apps with React, TypeScript, and Node.js—performance and AI-ready systems.

Poland

Message

What I'm looking for

I’m looking for a team where I can build scalable, performance-focused web apps with React/TypeScript, collaborate with enterprise clients, and ship AI-driven workflows—owning architecture, integrations, and production outcomes in distributed teams.

I’m a Senior Software Engineer with 6+ years of experience building complex, data-heavy web applications, with a strong focus on React and TypeScript. I design scalable frontend architectures, optimize performance for large UI systems, and ship production-ready full-stack features using Node.js and modern API-driven architectures.

Most recently, I’ve been building a B2B SaaS AI Travel Itinerary Builder as Lead Software Engineer / Founder—designing a multi-tenant system architecture, creating a visual drag-and-drop itinerary builder with real-time updates, and integrating Gemini/OpenAI for document import. Earlier, I led frontend architecture and complex workflow implementations for US-based enterprise clients, including performance optimization, migrations from MobX to React Query, and external integrations like Google Maps and Cherre.

Experience

Work history, roles, and key accomplishments

Current

Lead Software Engineer

Current

AI Travel Itinerary Builder

May 2025 - Present (1 year)

Designed a multi-tenant SaaS architecture for organizations, projects, and client portals. Built a drag-and-drop itinerary builder with real-time updates, AI-powered PDF import (Gemini/OpenAI), Google Maps integration, and backend APIs for itinerary management and approval workflows.

React TypeScript PostgreSQL Redis Google Maps Places API OpenAI API Gemini API Drag And Drop PDF Export

Senior Software Engineer

Vention

Aug 2022 - Mar 2026 (3 years 7 months)

Owned frontend architecture for multiple modules in a US-focused B2B CRM platform, delivering scalable React UI patterns and complex multi-step workflows. Optimized performance of data-heavy React views, integrated AI and third-party services (Google Maps, Cherre), and migrated state management from MobX to React Query to improve caching and error handling.

React TypeScript Redux React Query MobX Elasticsearch Google Maps Cherre API Performance Optimization

Software Engineer

MDA Interactive Agency

Sep 2021 - Sep 2022 (1 year)

Delivered full-stack web applications with a focus on complex frontend UI interactions and backend APIs. Built drag-and-drop interfaces with nested structures, real-time calculations, dynamic survey flows with branching validation, and automated PDF reporting with branded layouts.

Vue.Js TypeScript Pinia React PHP Drag And Drop

Software Engineer

Freelance

Jan 2020 - Jun 2021 (1 year 5 months)

Developed custom websites, e-commerce platforms, and web applications for multiple clients using WordPress, WooCommerce, React, and TypeScript. Implemented custom WordPress themes/templates, built WooCommerce-based storefront features, and delivered frontend and backend integrations with PHP, including deployments.