Koppany Kondricz

Koppany Kondricz

Mentor
5.0
(10 reviews)
US$24.00
For every 15 mins
18
Sessions/Jobs
ABOUT ME
full scale JS love
full scale JS love

My name is Kopi and my heart beats for my users.

Please check out my complete CV with my freelance projects included below the link:

https://kopii.notion.site/kopii/Koppany-Kondricz-CV-dc85beb9e0594b728d847aa4906179ff

Hungarian, Polish, English
Warsaw (+01:00)
Joined May 2019
EXPERTISE
5 years experience
I have learnt most of the aspects of modern web-development, and how a modern web-app is created. Starting from the very core functionali...
I have learnt most of the aspects of modern web-development, and how a modern web-app is created. Starting from the very core functionalities, as how to bundle things together should we speak about webpack, electron, or pure javascript. To sophisticated front-end design systems with React/Redux, not forgetting about styling aspects, where I have met different ways to style the web. (external stylesheets, cssinjs, styled components). Working as a freelancer with clients, I always had to to have a general overview of the product, thus having a wide horizont, from sketching till deployment.
5 years experience
I am a JS fullstack developer, but it has not always been like this. I started with programming the web and had experience with different...
I am a JS fullstack developer, but it has not always been like this. I started with programming the web and had experience with different JS frameworks. But very soon I had to deliver solutions where back-end was also included. I prefer simplicity delivering client solutions therefore I have advised nodeJS, noSQL databases and serverless infrastructures. The code obviously was always javascript.
5 years experience
Building an API is challenging and rewarding in the same time. In my opinion nodeJS is perfectly suitable for most of the API related fun...
Building an API is challenging and rewarding in the same time. In my opinion nodeJS is perfectly suitable for most of the API related functionalities. With an API it is important that it is readable for humans, and the code is easily scalable and changeable. My favourite framework is expressJS. I like to connect my back-end code to noSQL databases, but had experience with PostgreSQL too.
5 years experience
5 years experience

REVIEWS FROM CLIENTS

5.0
(10 reviews)
kwons90
kwons90
September 2020
Super quick at noticing problem and solved it! Thought it would take 2 hours but took 10 min
Aaron Azlant
Aaron Azlant
April 2020
Extremely easy to work with, did great work.
Mohammed Ali
Mohammed Ali
April 2020
Koppany is a great developer very easy to work with.
Alex Thompson
Alex Thompson
April 2020
Great coder. Found a solution extremely quickly.
Matt Davis
Matt Davis
March 2020
Very pleased. Worked and adapted to others code. Got done quick within timelines. Also no complaints with small changes to finalize. Great dev.
Removed User
Removed User
March 2020
Fun mentor
Aaron Azlant
Aaron Azlant
March 2020
Did great work quickly. Would re-hire.
Andre DiFelice
Andre DiFelice
March 2020
Koppany was quite helpful and quick to solve my problem. I highly recommend him to anyone in need of help!
JΓ‘nos Kukoda
JΓ‘nos Kukoda
March 2020
KoppΓ‘ny was very helpful, seems very good with React and AWS. He basically fixed the issue I struggeled for long time. :)
Joe Bashe
Joe Bashe
March 2020
Koppany is extremely good. He was able to identify the bug quickly, also found and solved another bug, and provided code for the solution all in about an hour of learning of the problem. Highly recommended!
EMPLOYMENTS
Owner
K2 SOFTWARE by Koppany Kondricz
2017-05-01-Present

πŸ‘¨β€πŸ’» K2.SOFTWARE by Koppany Kondricz 2017.05 -

Owner

πŸ‡΅πŸ‡± 🌍Warsaw, Poland (remote)

I love to r...

πŸ‘¨β€πŸ’» K2.SOFTWARE by Koppany Kondricz 2017.05 -

Owner

πŸ‡΅πŸ‡± 🌍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.

πŸš€ Front-end:

  • ⚑️ React and React-Native
  • 🎨 Front-end styling with CSS, SASS, CSS in JS, Styled Components
  • πŸš€ 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

βš™οΈ Back-end:

  • βš™οΈ Node JS, Express JS, and Typescript
  • πŸ’Ύ Back-end databases SQL and noSQL
  • βš™οΈ Back-end APIs with REST or GraphQL
  • 🏭 Back-end operations with serverless or containers
  • ☁️ Architecture on GCP or AWS
  • πŸš€ CI/CD with CircleCI or Github Actions

πŸ”¬ Other Expertise:

  • πŸ§ͺ Unit testing, integration testing, E2E testing
  • πŸ“ˆ Performance optimization
  • πŸ’Ύ Version control, releasing strategies, development environments
  • πŸ”§ Development process and tooling
Node.js
MongoDB
TypeScript
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Node.js
MongoDB
TypeScript
Firebase
React
React Native
GraphQL
Express.js
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Senior full-stack developer
AboutYou Gmbh
2022-02-01-2023-10-01

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 ...

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.

  • πŸ–₯️ Desktop website (React): Over 6 million monthly active users
  • πŸ“± Mobile website (React): Over 20 million monthly active users
  • πŸ“± 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.
  • πŸš€ Developing and implementing e-commerce features such as size selection, sold out products, color variations, basket item management, and product recommendations.
  • πŸ‘₯ Collaborating on cross-stack backend integration and maintaining API schema and documentation.
  • πŸ§ͺ 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:

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

TECH STACK:

  • βš›οΈ React (Typescript), React hooks
  • πŸ” React query
  • πŸš€ GRPC
  • 🟒 NodeJS
  • 🐲 GO
TypeScript
React
Go
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TypeScript
React
Go
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Full-stack developer
ERGO digital
2019-05-01-2022-02-01

As a Full Stack Developer at ERGO Digital IT, I played a key role in delivering cutting-edge technology solutions for <a href="http://...

As a Full Stack Developer at ERGO Digital IT, I played a key role in delivering cutting-edge technology solutions for ergo.de, with a focus on streamlining claim submissions and enhancing the overall customer experience. My responsibilities included developing both the frontend and backend components of a comprehensive claim submission form, catering to various types of insurance claims such as car, legal, house, and personal-related claims.

Responsibilities:

  • πŸ› οΈ Worked on the end-to-end implementation of a full-stack claim submission form, ensuring seamless integration between the frontend and backend systems.
  • πŸ“Š Developed and maintained the backend infrastructure to digitize and streamline the processing of incoming claims, replacing traditional phone submissions.
  • πŸ“ Integrated frontend insurance-related features, including claim uploads, damage marking, and map integrations, to create a user-friendly and intuitive claim submission experience.

Key Achievements / Major Contributions:

  • πŸš€ Led the backend development efforts and successfully launched the digitized claims process, resulting in improved efficiency and reduced manual effort.
  • 🌐 Expanded the initial use case of the claim submission form to accommodate multiple types of insurance claims, enhancing the platform's versatility.
  • πŸ“ˆ Collaborated in the development of a visual dashboard to track and monitor claim submissions, providing stakeholders with real-time insights and analytics.

Tech Stack:

  • Frontend: React (JSX, TSX)
  • Backend: Node JS
Node.js
TypeScript
React
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Node.js
TypeScript
React
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PROJECTS
2023
πŸ‡©πŸ‡ͺGermany, Central European Summer Time **Role:** Founder, Full Stack Developer, Architect **The mission:** Leipzig Beatzz 2.0. πŸ₯³ **Tec...
πŸ‡©πŸ‡ͺGermany, Central European Summer Time **Role:** Founder, Full Stack Developer, Architect **The mission:** Leipzig Beatzz 2.0. πŸ₯³ **Tech:** - βš™οΈ Backend: Node.js (TypeScript), Express.js - 🎨 Frontend: React Native, React - πŸ“¦ Database: MongoDB - ☁️ Infrastructure: Google Cloud Platform (GCP) - 🌈 Services: Stripe, Sendgrid, Twilio **Results:** - πŸŽ‰ Initial app delivered. Onboarding clients. **Explore:** - πŸ•Ί https://www.clubkit.app/ - πŸ“± https://play.google.com/store/apps/details?id=com.clubkit.bassnacht - 🍏 https://apps.apple.com/de/app/bassnacht/id6463464594 - 🀝 In cooperation with https://knguru.de/
TypeScript
React
React Native
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TypeScript
React
React Native
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