Skip to content
View Lensom's full-sized avatar

Block or report Lensom

Block user

Prevent this user from interacting with your repositories and sending you notifications. Learn more about blocking users.

You must be logged in to block users.

Maximum 250 characters. Please don’t include any personal information such as legal names or email addresses. Markdown is supported. This note will only be visible to you.
Report abuse

Contact GitHub support about this user’s behavior. Learn more about reporting abuse.

Report abuse
Lensom/README.md

👋 Hi, I'm Oleksii Rybalko

Senior Frontend Engineer | React • Next.js • TypeScript
📍 Based in Bucharest, Romania


👨‍💻 Professional Summary

Senior Frontend Engineer with 7+ years of experience building and scaling large B2B, e-commerce, and public-sector platforms across EU markets.
Focused on frontend architecture, design systems, and complex user flows, with end-to-end ownership of business-critical domains.

Proven impact through performance optimization, scalable UI foundations, and close collaboration with product, design, and backend teams.


🧠 Core Skills

Core Technologies

  • JavaScript (ES6+), TypeScript
  • React, Next.js, React Native

State & Data

  • Zustand, Redux Toolkit, Redux-Saga
  • REST APIs, WebSockets

UI & Styling

  • HTML5, CSS3, SCSS, Tailwind
  • Pixel-perfect implementation

Tooling & Quality

  • Webpack, Vite, Git, CI/CD
  • Jest, Playwright, Cucumber

Practices

  • Accessibility (a11y), SEO fundamentals, responsive design
  • Code reviews, mentoring

Languages

  • English — Advanced
  • Ukrainian — Native

💼 Work Experience

🧩 Autodoc — Senior Frontend Engineer

📍 Berlin, Germany | 🗓 10.2023 – Present

  • Played a key role in designing and scaling frontend architecture for a multi-country return management platform processing 40K+ return requests weekly across EU markets.
  • Took end-to-end ownership of complex frontend domains (Returns Portal, refund flows), influencing architectural decisions and cross-team technical direction.
  • Delivered customer-facing experiences that enabled 2× faster refunds, 74% instant return decisions, and 90% fewer returns-related support contacts.
  • Contributed to the evolution of Constanta UI, improving consistency and speeding up delivery across teams.
  • Built reusable, well-tested UI components and collaborated closely with backend engineers, designers, and product managers.

🪄 Moohii — Senior Frontend Engineer

📍 Dnipro, Ukraine | 🗓 02.2022 – 08.2023

  • Built and maintained complex SPAs for high-traffic e-commerce and government platforms used by tens of thousands of users.
  • Improved frontend performance and UX through architectural refactoring and close collaboration with backend and product teams.
  • Contributed to frontend architecture, performance optimization, and accessibility compliance.
  • Delivered scalable, user-focused solutions for business and public-sector domains.

⚙️ NDA — Frontend / React Developer

📍 Odesa, Ukraine | 🗓 01.2021 – 02.2022

  • Delivered dynamic SPAs using React and modern state management.
  • Integrated REST APIs and built reusable UI components for production environments.

🌐 Earlier Experience — Frontend Developer

📍 Odesa, Ukraine | 🗓 2018 – 2020

  • Worked across multiple commercial projects, building React-based applications for diverse client requirements.

🎓 Education

Master’s Degree in Information Technology
Odesa National Maritime University (2018–2019)

Bachelor’s Degree in Information Technology
Odesa National Maritime University (2013–2018)

Pinned Loading

  1. weather-native weather-native Public

    TypeScript

  2. React-Custom-Social-Network React-Custom-Social-Network Public

    Custom Social Network

    JavaScript 1