Michal Pasierbski

EF Education First Lead software developer

Leading the implementation of Cloudflare workers handling all EF product pages traffic.

Leading performance task force team, making sure that new releases are in line with performance thresholds.

Setting up dev-ops pipelines and consulting infrastructure choices.

07.2019 - now, Zurich, Switzerland

R3PI Software development engineer/Front end lead

Leading 3-man team's development efforts

Introduced data-loaders (caching mechanism) to GraphQL middleware, reducing number of roundtrips to external services.

Audited and optimized production builds by reducing overal bundle size by 25% and utlizing code splitting.

10.2018 - 05.2019, Zurich, Switzerland

EF Education First Senior front end engineer

Lead 4-man team's JavaScript development efforts, i.e. set standards for unit (Jest), integration (puppeteer) testing and code conventions.

Introduced code splitting and asset name hashing to utilize long term caching resulting in significant initial load performance increase.

Unified team's development environments by introducing and configuring Docker.

12.2017 - 09.2018, Luzern, Switzerland

IS Engineering Ruby/Javascript engineer

Designed and implemented distributed, multi factory (glass plants) data analytics system (Docker, PostgreSQL, MongoDB, NodeJS, Ruby on Rails, Vue.js, Highcharts), successfully commissioned at plants in Ukraine, Brazil, Turkey and Germany.

01.2014 - 11.2017, Zug, Switzerland

PGS Software Javascript developer

Remodeled team's git workflow, which resulted in 6 fold decrease of time needed for release preparation.

Automated project's build process by introducing Grunt task runner.

09.2013 - 12.2013, Wroclaw, Poland

Sharewise Ruby/Javascript engineer

Implemented "push" service (Websockets, NodeJS, Redis) for existing Ruby on Rails application.

Moved lagacy front end code from JqueryUI to AngularJS.

Led 3-man team in charge of mobile site version development.

02.2011 - 08.2013, Wroclaw, Poland

Starware Ruby/Javascript engineer

09.2010 - 01.2011, Wroclaw, Poland

CMS Mirage JAVA developer

05.2009 - 08.2010, Wroclaw, Poland