Mariusz Bińkowski, Developer in Warsaw, Poland
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Mariusz Bińkowski

Verified Expert  in Engineering

React Developer

Warsaw, Poland

Toptal member since July 21, 2021

Bio

Mariusz has been a professional developer for two years. Most recently, he's been focusing on working as a web developer. Mariusz is experienced with many web frameworks and environments, but he particularly enjoys developing with Next.js. He values simplicity and efficiency and loves working on interactive products.

Portfolio

Gemini Design
CSS, ESLint, Git, HTML5, JavaScript, Jest, Next.js, Editor.js, Antd...
Ministry of National Defence
CSS, ESLint, Git, HTML5, JavaScript, Jest, React, Storybook, Cypress, Puppeteer...
IT Center
.NET, C#, ELK (Elastic Stack), RabbitMQ, Entity Framework, Docker, SQL, Git...

Experience

  • React - 3 years
  • HTML5 - 3 years
  • Storybook - 3 years
  • CSS - 3 years
  • JavaScript - 3 years
  • Jest - 3 years
  • Next.js - 2 years
  • React Redux - 2 years

Availability

Part-time

Preferred Environment

Windows, Visual Studio Code (VS Code), Slack, Google Chrome, Firefox, Git

The most amazing...

...thing I have developed is real-time map with on-hover information about provinces.

Work Experience

React Developer

2021 - PRESENT
Gemini Design
  • Implemented A rich text editor with its own React components using Editor.js.
  • Conducted research and development for libraries and ways to improve the codebase.
  • Helped and mentored junior developers from various backgrounds.
Technologies: CSS, ESLint, Git, HTML5, JavaScript, Jest, Next.js, Editor.js, Antd, Styled-components, Axios, React Testing Library, React Redux, React, Storybook, Unit Testing, Visual Studio Code (VS Code), Node.js

React Developer

2019 - PRESENT
Ministry of National Defence
  • Created boilerplate, adjusted tools, built the app architecture, and designed system components.
  • Performed code reviews for other developers using ADOSa and inducted new employees into the project.
  • Implemented real-time maps with on-hover information about provinces as well as relational diagrams between provinces using: leaflet and react flow libraries.
  • Conducted R&D (research and development) for libraries and ways to improve the codebase.
Technologies: CSS, ESLint, Git, HTML5, JavaScript, Jest, React, Storybook, Cypress, Puppeteer, TypeScript, React Router, Unit Testing, E2E Testing, Styled-components, Axios, React Testing Library, Visual Studio Code (VS Code)

.NET Developer

2020 - 2020
IT Center
  • Developed microservice responsible for automatic invoice sending through email with acknowledgment of receipt.
  • Tracked and fixed bugs of API using the internal reporting tool.
  • Conducted R&D (research and development) for libraries and ways to improve the codebase.
  • Rewrote database access layer from Dapper to Entity Framework Core.
Technologies: .NET, C#, ELK (Elastic Stack), RabbitMQ, Entity Framework, Docker, SQL, Git, Unit Testing, PostgreSQL

Experience

Application for Evaluating Recorded Calls

SaaS for recording, storing, reviewing, analyzing, scoring, and sharing recorded calls, videos, notes, and comments. I was responsible for building several views, adding features such as rich text editors, drag and drops, and generating client-side documents in PDF extension. The progress of all tasks was tracked inside the application. I was also responsible for the quality of the code of my teammates since code reviews were done regularly. I also researched technologies and libraries that would be possible to achieve the client's requirements.

Application for Records of Documents

Application for Polish government for records of documents in cryptography registry. I was responsible for creating the whole boilerplate of the project, adjusting tools, and building the web application architecture. I conducted code reviews for other developers using Azure DevOps. The application was developed inside a specific environment without internet access. An important part of the project was safety since the documents inside the application were confidential. I was also responsible for implementing a real-time map with information about each province in Poland.

Education

2014 - 2019

Master's Degree in Computer Science

Wojskowa Akademia Techniczna - Warszawa, Poland

Certifications

MAY 2021 - PRESENT

Advanced, Fancy TypeScript

GitNation

MAY 2021 - PRESENT

Advanced React/Advanced Composition

GitNation

Skills

Libraries/APIs

React, React Redux, React Router, Antd, React Testing Library, Node.js, Puppeteer, Entity Framework, Context API

Tools

Git, Prisma, Sequelize, ELK (Elastic Stack), RabbitMQ

Languages

CSS, JavaScript, HTML5, SQL, TypeScript, C#

Frameworks

Jest, Next.js, Cypress, Express.js, .NET, Redux

Paradigms

Unit Testing, E2E Testing, Object-oriented Programming (OOP)

Platforms

Visual Studio Code (VS Code), Docker, AWS Lambda

Storage

PostgreSQL

Other

Storybook, ESLint, Styled-components, Editor.js, Axios

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