Patrik Piskay
Verified Expert in Engineering
Software Developer
Patrik is a software engineer with extensive experience in UI engineering, specialized in writing performant and testable code for high traffic websites. He has mentored other developers and helped build teams. Patrik cares deeply about quality engineering and working in a way that makes doing things well as important as doing things fast. His main expertise includes JavaScript, React, Redux, TypeScript, Node.js, Electron, and testing frameworks and libraries, wrapped up in an agile environment.
Portfolio
Experience
Availability
Preferred Environment
Visual Studio Code (VS Code), Slack, Git, Jira, MacOS
The most amazing...
...app I've contributed to is Off3r, for which I built the web and mobile front end from concept to launch in less than half a year.
Work Experience
Senior Front-end Engineer
Parsable
- Architected and implemented new features and improvements for web apps that help the world’s largest industrial firms get jobs done right by replacing legacy paper workflows with a modern industry 4.0 collaboration and workflow platform.
- Shipped new features, such as a BPMN-based workflow builder or a native Windows Electron app, collaborating with members of cross-functional teams on different continents.
- Implemented, open-sourced, and maintained a React library to solve product needs that also proved to be useful to developers and products outside of the company too.
- Delivered high-quality code and contributed to having under 10 active bugs at any point in time as a team (lowest of all teams), thanks to thorough peer code reviews.
- Improved Parsable's web application loading performance by optimizing the bundle size and introducing code splitting/page lazy loading.
- Set up processes to improve development efficiency (enabled app hot-reloading, set up tools such as Prettier, ESLint presets, or pre-commit hooks).
- Helped bring the unit test coverage (using Jest, Enzyme, and react-testing-library) from 0 to 65% in around a year.
Software Engineer
Treatwell
- Built new features and made improvements to the largest hair and beauty bookings website in Europe.
- Upon joining the team, identified performance bottlenecks in the application and came up with a detailed plan to gradually update the codebase to mitigate the performance issues.
- Initiated and set up new development practices, like creating and testing of web components in isolation, to speed up development and improve quality.
Senior Front-end Engineer
OfficeServe
- Built a web application for an office food delivery platform integrated with AWS.
- Closely collaborated with product and design teams to improve the app's checkout flow, resulting in higher user retention and improved order numbers.
- Set up and improved processes to speed up build and delivery times by 50%.
Experience
Treatwell Web App
https://www.treatwell.co.ukOff3r
Skills
Languages
JavaScript, HTML, CSS, TypeScript, GraphQL
Frameworks
Redux, Electron, Express.js, Jest
Libraries/APIs
React, Node.js, React Redux, CSSinJS
Tools
Git, JSX, Jira, Babel, Webpack, Flow, Slack
Paradigms
Unit Testing, REST, Test-driven Development (TDD), Agile
Platforms
Amazon Web Services (AWS), Docker, MacOS, Visual Studio Code (VS Code)
Storage
PostgreSQL, MongoDB, MySQL, NoSQL
Other
Serverless, WebSockets
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