Hire Top Freelance
Blockchain Developers
in Warsaw

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.

BlockchainVue.jsReact NativeEthereumSolidityGitTensorFlowPyTorchC#Ruby on RailsReduxTypeScriptServerMachine LearningPostgreSQLMySQLPythonPHPHaskellMongoDBJavaScriptMeteorRustNode.jsReactCC++jQueryCSSCoffeeScriptCucumberHTMLHTML/CSSShell

Developer of variety of web technologies since 15+ years. Worked with startups on different stages. From 1 employee to 400+. Familiar with optimization of code, databases, infrastructure and human interactions. I have worked professionally in Ruby, Python, JavaScript, Go, Java, PHP.

BlockchainPerformance OptimizationAWS (Amazon Web Services)ConsultingDatabaseRubyPostgreSQL

Bart, a highly skilled and experienced full-stack JavaScript developer with over 14 years in the industry. With a diverse background in various frameworks such as React, NextJS, Vue, Angular, AngularJS, NodeJS, Electron and React Native, Bart has honed his expertise to bring value to his clients. His extensive experience as a Chapter Lead, Team Lead, and Senior Engineer for reputable corporations like Endeavor, Harvard, Boston Consulting Group, Lufthansa, Danske Bank, DAZN, Toptal, ERGO, IGT, PZU, PLAY and US-based startups like RTG, Arpeggi, SOCI, and LabFellows, showcases Bart's versatility and ability to thrive in any environment.

BlockchainNode.jsReactTypeScriptPythonSQLNext.jsJavaScript