Koppany K.

👨‍💻 K2.SOFTWARE by Koppany Kondricz 2017.05 -

Owner

🇵🇱 🌍Warsaw, Poland (remote)

I love to roll up my sleeves. I am a software engineer, and I love my craft. Alongside planning, I am actively taking my part in the development process. I turn the mumbo jumbo into features with my own bare hands.

🚀 Front-end:

• ⚡️ React and React-Native
• 🎨 Front-end styling with CSS, SASS, CSS in JS, Styled Components
• 🚀 Front-end generators with Gatsby JS and NextJS
• ☁️ Front-end static hosting on Firebase hosting, S3, netlify
• 🌐 Front-end back-end integration with REST API, GraphQL, Websockets

⚙️ Back-end:

• ⚙️ Node JS, Express JS, and Typescript
• 💾 Back-end databases SQL and noSQL
• ⚙️ Back-end APIs with REST or GraphQL
• 🏭 Back-end operations with serverless or containers
• ☁️ Architecture on GCP or AWS
• 🚀 CI/CD with CircleCI or Github Actions

🔬 Other Expertise:

• 🧪 Unit testing, integration testing, E2E testing
• 📈 Performance optimization
• 💾 Version control, releasing strategies, development environments
• 🔧 Development process and tooling

I am a senior full-stack developer for AboutYou, one of the fastest-growing e-commerce companies based in Hamburg. In this role, I am responsible for working on various aspects of the e-commerce platform, catering to millions of users on different platforms.

• 🖥️ Desktop website (React): Over 6 million monthly active users
• 📱 Mobile website (React): Over 20 million monthly active users
• 📱 Mobile App (Flutter): Over 7 million monthly active users

Responsibilities:

• 🌟 Enhancing high-traffic customer-facing UI elements, including basket, wish list, checkout page, profile page, campaigns, and discounts.
• 🚀 Developing and implementing e-commerce features such as size selection, sold out products, color variations, basket item management, and product recommendations.
• 👥 Collaborating on cross-stack backend integration and maintaining API schema and documentation.
• 🧪 Conducting AB tests, user tracking, and monitoring.

I actively contribute to high-profile projects aimed at enhancing the shopping experience. While my primary focus is front-end development, I also contribute to back-end features and participate in API planning discussions that involve cross-functional teams across web, back-end, and app development.

Notable Contributions:

• ✅ Successfully launched new basket and wish list functionalities.
• 🚀 Introduced personalized campaigns for users, enhancing engagement.
• 🌟 Improved product recommendations site-wide, enhancing user experience.
• 📏 Implemented centralized size selection for a smoother shopping journey.
• 🌍 Supported successful launches in new countries, expanding market reach.

TECH STACK:

• ⚛️ React (Typescript), React hooks
• 🔍 React query
• 🚀 GRPC
• 🟢 NodeJS
• 🐲 GO