Full-stack JavaScript Developer
2017 - PRESENTOnline Freelance Agency- Developed sophisticated web applications for unique clients from all around the world.
- Successfully led a team of five and built a product.
- Implemented advanced filtering and searching SQL queries for PostgreSQL.
- Optimized a React-based application.
Technologies: TypeScript, JavaScript, Node.js, React, ReduxFreelance Front-end Web Developer
2009 - PRESENTFreelance Work- Prepared multiple lightweight and responsive layouts with the use of the newest technologies.
- Created multiple WordPress themes from PSDs.
- Coded multiple WordPress plugins from scratch.
Technologies: HTML5, CSS3, jQuery, PHP, WordPressFull-stack JavaScript Developer
2017 - 2017Tremor Technologies, Inc.- Created the front end of the application from scratch.
- Prepared plans and estimations for the front-end codebase.
- Implemented functionalities required for the new reinsurance marketplace application in Angular 2.
- Created a REST API in Node.js for the purpose of demoing the application.
Technologies: Angular 2, TypeScript, C3.js, RxJS, Observables, Node.js, Hapi.jsJavaScript Developer
2016 - 2017Move Technologies (via Toptal)- Implemented new features in a large AngularJS application.
- Supported a legacy app in AngularJS.
Technologies: JavaScript, AngularJS, HTML, CSS, SCSS, LessFull-stack JavaScript Developer
2015 - 2016Comet Lab- Implemented a performance audit for a web application, pinpointed key performance problems, and refactored the application in order to address these problems which resulted in over 3x rendering time improvement.
- Created a WebRTC-based multi-user video chat application, including sound recording and transcription features.
- Developed an interactive application for monitoring status of various devices and drawing graphs of hundreds of points per second using AngularJS and WebSockets.
- Built a REST API in Node.js for a music-related startup.
- Implemented new features in an existing React application.
Technologies: HTML5, CSS3, JavaScript, TypeScript, AngularJS, React, Flux, Node.js, Hapi.js, PostgreSQL, WebSocketsJavaScript Developer
2013 - 2015Confr- Created a web application for Confr using AngularJS, and a REST API.
- Developed a REST and WebSockets API using Node.js, WebSockets, MongoDB, and PostgreSQL.
- Took over the development of an iOS application and delivered the finished product within a month.
- Conducted code reviews of coworkers' work.
- Communicated directly with business clients, created scenarios in order to fulfill all the requirements.
Technologies: HTML5, CSS3, JavaScript, AngularJS, Node.js, MongoDB, WebSockets, PostgreSQL, Objective-C, REST APIJavaScript Developer
2012 - 2013Oyatel AS- Created a web chat plugin for an existing Telco product.
- Developed a JavaScript application and did research about the newest, bleeding-edge technologies.
- Built a mobile application in Backbone.js.
- Completed research and development of a webRTC-based video chat solution.
- Created an interactive game platform for a JavaScript conference.
Technologies: HTML5, CSS3, JavaScript, jQuery, Backbone.js, RequireJS, XMPP, Strophe
Full-stack JavaScript Developer in Gdańsk, Poland
Member since June 5, 2016
Michal is a motivated full-stack JavaScript developer. He's focused on building lightweight, responsive, and semantic web apps with the use of modern technologies and standards. He loves pair programming and sharing his knowledge with coworkers. He also appreciates the Agile method, domain-driven design, and working with clients. Michal is an open-minded quick learner who's able to develop ingenious solutions when faced with obstacles.
Michał is now available for hire
Portfolio
- Online Freelance AgencyTypeScript, JavaScript, Node.js, React, Redux
- Freelance WorkHTML5, CSS3, jQuery, PHP, WordPress
- Tremor Technologies, Inc.Angular 2, TypeScript, C3.js, RxJS, Observables, Node.js, Hapi.js
Experience
- JavaScript 10 years
- ECMAScript (ES6) 10 years
- Scrum 9 years
- Node.js 8 years
- Hapi.js 7 years
- TypeScript 7 years
- React 5 years
- Redux 5 years
Availability
Part-time
Preferred Environment
MacOS, Visual Studio Code, Git
The most amazing...
...thing I've done was a performance audit and refactoring of a web app (drawing graphs of hundreds of data points) and over 3x improvement in rendering time.
Employment
Experience
- React-with-observable (Development)https://github.com/mmiszy/react-with-observable
Use Observables with React declaratively!
- Typesafe-hapi (Development)https://github.com/mmiszy/typesafe-hapi
Type checking for Hapi.js based on Joi schemas!
- Functional ORM (Development)https://github.com/mmiszy/functional-orm
A 100% typesafe SQL query builder.
- Meet.js Summit 2018 (Other amazing things)https://summit.meetjs.pl/2018/
Meet.js Summit 2018 with over 500 people was the largest JavaScript conference organized in Poland. All the money from selling tickets was donated to a charity!
- Meet.js Summit 2017 (Other amazing things)https://summit.meetjs.pl/2017
Meet.js Summit 2017 with over 400 people was the largest JavaScript conference organized in Poland.
- Type of Web (Other amazing things)https://typeofweb.com/
Type of Web is a blog I've created. It's one of the most popular technical blogs in Polish.
- Meet.js Summit 2013 (Other amazing things)http://summit.meetjs.pl/2013/
Meet.js Summit 2013 was a completely free JavaScript conference with over 300 attendees—the largest event of this kind ever organized in northern Poland.
- Meet.js Gdańsk (Other amazing things)http://meetjs.pl
Free front-end meetups organized every two months. It consisted of three 10-minute presentations, food, and beer.
- Toptal MentorMichał is a mentor in the Toptal Global Mentor’s Program. This program is a partnership between Toptal and General Assembly to provide high quality mentorship for students from minority and low income backgrounds who are looking to begin their careers as professional software engineers. Michał shows commitment to diversity in tech by mentoring a General Assembly student every week for a year, covering everything from coding tips and tricks to advice on making it in the industry.
Skills
Languages
JavaScript, HTML, CSS3, TypeScript, HTML5, SCSS, ECMAScript (ES6), Reason ML, OCamlFrameworks
Flux, AngularJS, Hapi.js, Redux, Angular Material, SwaggerLibraries/APIs
jQuery, REST APIs, React, Node.js, ReasonReact, C3.js, RxJS, WebGLTools
GitHub, Sequelize, Git, Facebook ReasonParadigms
Behavior-driven Development (BDD), Test-driven Development (TDD), Kanban, Scrum, RESTPlatforms
MacOSStorage
JSON, PostgreSQL, MongoDB, MySQLOther
Domain-driven Design (DDD)
Education
- Bachelor's degree in Computer Science2011 - 2014Gdańsk University of Technology - Gdańsk, Poland
