Piotr Czerwiński

• Implementing new features and extending/improving existing ones in two portals: one for companies looking for employees and the other for employees looking for a job
• Development and maintenance of the company's website
• Development and maintenance of a mobile application

• Creating reusable components as part of the company's design system
• Writing unit tests for business logic and components
• Preparing releases
• Active participation in refinements meetings (conducting this meeting from time to time)
• Working in agile methodology and collaborating with the rest of the team (product owner, business analysts, UX/VD designers, back-end developers, front-end developers)

• Developing an app for a British product company providing online rail ticketing systems
• The app is an admin panel for admins and contains specific information related to each transaction
• Technology stack: TypeScript, React/Next.js and GraphQL.

• Working on a few apps for US customer who specializes in installation services
• Technology stack: TypeScript
• React/Next.js and REST APIs.

• I was responsible for the development of React application integrating customer’s Shopware5 shop with Zalando
• Merchant Platform (zDirect API)
• Technology stack: JavaScript and React.

• Work for Secupay AG
• My responsibility was to develop a system that handles approximately 175,000 payment transactions per day
• Technology stack: JavaScript, React, PHP and Yii2.