Hire Top Freelance
Back-End Developers
in Poland

Hi, my name is Piotr and I've been coding for around 6 years now. My mainly focus is backend written in Ruby but I do also like to write JS code and do some frontend stuff. I've raised some juniors that are now mids along my coding path. I've been organizing coding meetups in my home city. I've general love for coding and I'd like to help people, share and get to learn knowledge. I've been having fun writing chrome extensions lately.

Back-EndSQLRubyPostgreSQLRedisReactElasticsearchJavaScriptRuby on Rails

**Full-stack software engineer.** - Backend specialist for 5 years at S&P and Banqsoft. - Mobile specialist for 7 years with Diversido, Noble Muffins and other clients. - Professional experience with React, TypeScript, C++ and Java. I got my start when I took over IT at a horse trailer dealership to gather money to move to Europe. At S&P, I took our team's first two microservices from zero to production. I later served as scrum master, and was given a technical excellence award for my work in SQL optimization. As a game developer, my Turbo Slicer product has been featured repeatedly by the Unity Asset Store. I wrote a finite element analysis kit for PlayWay S.A. to manage building collapse for the games Construction Machines 2016, Demolish & Build 2017 and Demolish & Build 2018. As a mentor I will solve your problem and explain it with patience. My favorite highlights from my time here: * Helped an experienced engineer build a Gtk-based UI for an industrial control unit. * Helped an entrepreneur deliver a Unity-based VR demo to customers and investors. * Debugged problems of concurrency, thread safety and asynchronous IO in iOS apps. * Lead a student through correct authoring of a filesystem driver. I check Codementor daily. Write me and let's get something done!

Back-EndC++JavaMongoDBUnityC#ReactSQLiOS

Full-stack developer and entrepreneur. Expert in JS/Meteor.js/MongoDB. Author of meteor-pages, one of the most popular Meteor packages, and bimap, a JavaScript bidirectional map implementation. A very quick learner, created state of the art solutions for multinational corporations.

Back-EndVue.jsReact NativeEthereumSolidityGitTensorFlowPyTorchC#Ruby on RailsReduxTypeScriptServerMachine LearningPostgreSQLMySQLPythonPHPHaskellMongoDBJavaScriptMeteorRustNode.jsReactCC++jQueryCSSCoffeeScriptCucumberHTMLHTML/CSSShell