Tomasz Mularczyk
Verified Expert in Engineering
Front-end Developer
Warsaw, Poland
Toptal member since April 17, 2020
Tomasz is a passionate front-end engineer who excels at creating responsive and rich websites. He's worked for small and medium companies, as well as for big corporations. Along with being quality-driven, Tomasz enthusiastically shares his skills and knowledge with his teammates and contributes to open-source projects.
Portfolio
Experience
Availability
Preferred Environment
Jira, Slack, Trello, Figma, InVision, Zeplin, Visual Studio Code (VS Code), MacOS
The most amazing...
...project I've developed was an app that would let users import and edit 3D models directly into a browser.
Work Experience
Front-end Engineer
Toptal Clients
- Developed an eCommerce website called Corroshop.com.
- Worked on a booking app for a well-known automotive company. Fixed bugs in a legacy project and helped migrate the project to a newer version.
- Helped fix bugs and rewrote the flight-booking app.
Front-end Engineer
Kraken
- Tested (E2E) critical user flows for the funding page with Cypress.
- Tracked and fixed bugs using Jira as a reporting tool.
- Fixed styling inconsistencies across different mobile browsers.
Front-end Engineer
OLX Global
- Migrated part of the website to a new front-end stack in Next.js.
- Contributed to the development of a new monetization framework.
- Helped onboard new members to the team and contributed to overall knowledge sharing.
Senior Front-end Developer
Netguru
- Contributed to the development of a fintech investment platform that has over €100 million assets under management by this time.
- Worked in a Scrum environment with a team of 20 developers. Constructed both admin and client SPA in React.
- Refactored the app from JavaScrip to a TypeScript.
- Implemented a previously desktop-only app to support mobile devices as well.
- Made presentations of new features to the client and potential investors.
- Migrated the whole app from a complicated Webpack configuration to a new framework.
- Served as an active member of the company recruitment team.
- Optimized components for maximum performance across a wide array of devices and browsers.
- Delivered new versions of the product, frequently using integration and automation.
Front-end Developer
Risen
- Co-created an app that would allow editing of a 3D model in the browser.
- Worked on a platform for companies and influencers. Added new features, updated the project dependencies, refactored legacy code, and optimized it to work faster.
- Helped onboard new developers with their assignments and kept an eye on code quality.
- Established standards, flow, and the main stack for the front-end area for a quickly growing company.
- Helped our client get a government subsidy of close to $250,000.
Junior Java Developer
netPR
- Optimized and wrote unit/integration tests for crucial back-end endpoints using Mockito and other integrations tools.
- Replaced legacy code that used the Struts framework to use the Spring framework.
- Updated and replaced legacy dependencies and refactored JPQL with QueryDSL.
- Took part in daily standups and weekly and planned sprints with the team using Jira.
Experience
React Library Maintainer
https://www.npmjs.com/package/react-id-generatorRewrite of a React-based Responsive Project
https://www.npmjs.com/package/react-responsiveEnter the World of Entertainment by Totalizator Sportowy
RESULT: We won the first prize in this hackathon category.
• https://hackyeah.pl/winners-2019/#Enter%20the%20world%20of%20entertainment%20by%20Totalizator%20Sportowy
Education
Bachelor's Degree in English Philology
University of Information Technology and Management - Rzeszów, Poland
Skills
Libraries/APIs
React.js, React.js, Redux-Saga, React-Intl, Rollup.js, Chart.js, Node.js
Tools
Create React App, Git, Webpack, Babel, React.js, Zeplin Design, InVision, Figma, Trello Development, Slack Development, Flow, GitHub, Jira, React Apollo, Docker Compose
Languages
HTML, HTML5, JavaScript, TypeScript, SCSS, CSS, ECMAScript 6, Java, GraphQL
Frameworks
Redux, Next.js, Jest, Tailwind CSS, Material UI, Bootstrap, Spring, Hibernate, Mockito, Cypress
Paradigms
Responsive Web Design, Clean Code, Unit Testing, Testing, REST, Responsive Web Design
Platforms
Visual Studio Development, MacOS, Docker, Netlify
Storage
Media Queries, PostgreSQL, MySQL
Other
Lint, Mobile First Design, Axios, Front-end, ESLint, TSLint, Styled-components, CSS-in-JS, GatsbyJS, Web Application, Web Development, Mobile Web Design, UI Development, Responsive Web Development, Storybook, UI Development, Data Structures, DOM, APIs, Landing Pages, Open Source Development, Apollo, Server-side Rendering (SSR), Analytics Development, Enzyme
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