Hire Top Freelance
Blockchain Developers
in Eastern Europe

Hi. I am Full Stack developer with more than 5 years of experience. I have a background in software architecture, Linux systems, security, web and mobile applications, AI, and several programming languages and technologies. I have strong experience designing and implementing robust, scalable and simple solutions to solve real-life business cases. I have worked with several architecture models, from server-client architectures down to complex distributed and real-time processing systems. I have worked for 6 years with various technologies and frameworks. And for the last 5 years I have been working with Node.js and python on different kind of projects. I am very used to work in large teams with agile and agile methodology. I have specialized myself in AWS solutions, and have been working for the last years providing independent consultatory to various companies. I have strong experience with specialized AWS services, such as Lambda, IoT, Kinesis, RedShift, Glue and Athena. I have also specialized in machine learning and natural language processing and generation. My skills are : - React/Redux, Angular, Vue.js, Nextjs, Nuxt - Node.js, PHP, WordPress, Laravel, Drupal, Python, Django, Flask, Java, Springboot - Machine learning, Deep learning, AI - Solidity, Rust - Embedded Systems, firmware development, Raspberry pi, Arduino, PyQT - C/C++, Haskell, Delphi, Verilog/VHDL - React Native, Android Studio, Swift, ionic framework, Flutter, Flutterflow

BlockchainVue.jsRaspberry PiAngularC++React NativeSwiftMachine LearningAndroidNode.jsReactPHPPython

Hey! I am Johnny B. 🙏 (Actually, my Romanian friends call me Ionică, which in English is basically: Johnny). ...and I 💖 emojis! I started coding around 2010, starting with simple static websites, WordPress applications, and then tried Node.js for the first name around 2012. Since then, I have been working with Node.js. I like it a lot. Currently, I do the best in: ★ Node.js 🚀 ​ ​ ☆ Command line tools ​ ​ ☆ Express.js ​ ​ ☆ Passport ​ ​ ☆ Raw/minimal code, without frameworks (e.g. simple HTTP server) ​ ​ ☆ Using npm ​ ​ ☆ Creating npm packages for Node.js (and for the front-end as well) ​ ​ ☆ Scraping the web ​ ​ ☆ Automation of repetitive tasks ​ ​ ☆ Image processing ★ JavaScript ✨ ​ ​ ☆ Creating and importing libraries ​ ​ ☆ jQuery (creating plugins, using them etc) ​ ​ ☆ Scraping ​ ​ ☆ Automation of repetitive tasks ​ ​ ☆ Publishing npm packages ​ ​ ☆ SVG (SVG.js, d3.js) ★ HTML & CSS 🎨 ​ ​ ☆ Fixing CSS quick issues ​ ​ ☆ Implementing mockups ​ ​ ☆ Making the page responsive ​ ​ ☆ SEO tips & tricks ★ Command line 💻 ​ ​ ☆ Shortcut tips ​ ​ ☆ Creating command line tools ​ ​ ☆ Using VIM & Tmux ★ Code Review 👀 ​ ​ ☆ I do code review offline, for Node.js, JavaScript, eventually CSS. ​ ​ ☆ Can be done in a live session as well. ​ ​ ☆ Security checks ​ ​ ☆ I point things that can be done in a better way ★ Using Git & GitHub/GitLab/BitBucket etc. 😸 ​ ​ ☆ Introduction to how Git works ​ ​ ☆ Using Git hosting services (e.g. GitHub, GitLab, BitBucket etc) ​ ​ ☆ Top Git commands ​ ​ ☆ Shortcuts If I can help, I will definitely do it, as long your app is not promoting things that tend to be potentially immoral. For example, I'm happy to help you build an e-shop, but I will probably not build an e-shop designed specifically for selling wine since I am against the use of alcohol for drinking. ♦ 🚀 Node.js: 9 years of experience, ~700 packages published on NPM ♦ 💛 JavaScript: 9 years of experience, lots of libraries you can download freely (https://goo.gl/ewoQsK) ♦ 🗣 Fluent in speaking English & Romanian, and comfortable in Spanish & Portuguese ♦ 😸 GitHub Enthusiast (follow me: https://github.com/IonicaBizau) ♦ 😻 Git & GitHub power user ♦ 🍀 Comfortable with MongoDB (especially, the native driver for Node.js) ♦ ❇️ I will not charge you if I can't fix your issue. Why you can trust me: ★ I am a vegetarian. I have never eaten meat. 🍍🥑🥗 ★ I have never drunk wine, beer, etc. Water is the best. 💧 ★ I work for 6 days, and I rest on the 7th day. That's why I am *not* available on Saturdays (specifically between Friday's sunset and Saturday's sunset, my location at the time—you can my timezone a little bit below). 🙏 ★ I sleep between 9:18 PM and 4:42 AM. Depending on your timezone I can wake up earlier if you book a session with me. 💤 ★ I am a musician (pianist and organist). 🎹 ★ I use VIM on macOS and Linux. 🐧🍏

BlockchainGoogle apisCLISecurity softwareReactMongoDBNode.jsJavaScriptjQuerySVGHTML/CSSHTMLVimCSSGitFirebaseCOBOLShell

I'm CTO, System Architect, Full-Stack developer with 10+ years of experience. I've experience of building billing systems for Internet Service Providers, Mobile Content Providers, Site Builder Systems (like a SitePlus.com, Wix.com), Learning Management System (cyber-education.az), small tools and etc. stuff. I can work alone or manage a team and work together to keep them enough mentored and motivated. Experience list (developing during work): 1. NodeJS - expert with 5+ years experience (my main serverside script interpreter that I use extensively in projects where high load and low latency is in first place), 2. PHP - expert with 10+ years experience (have rich experience with any popular framework of it, built billing systems and apps that will be supported by other developers where NodeJS devs are few), 3. Rust, C++, C#, Java, Python, Ruby - debugger and had deal with code written on these languages, writing own small projects on Rust as hobby before using it in customer's work. 4. Databases: MySQL (also Galera Cluster) - expert (installing, tuning, replication, complex queries, building optimal db solutions), PostgreSQL - expert (installing, tuning, replication, complex queries, building optimal db solutions), MongoDB - expert (currently preferred as primary db in most of projects, have rich experience on any aspect of this db), CouchBase - expert (using as secondary after MongoDB to cache, store data that is requested with high concurrency), CouchDB - expert (same as CouchBase, but I prefer CouchBase for it's active data in memory principles), RethinkDB - expert (I use it to build back communication between api micro-services and web-socket micro-services to route response to exact connection in context of multi-instance containers) 5. Frontend frameworks: AngularJS, ReactJS - have experience of supporting code written using these frameworks and experience can be developed if there is big need to work with them 6. Building micro-services and dockerizing it - I write micro-services "every day" because it's more compact, stable, flexible, scalable way of shrinking system to modular parts that will not conflict much than monolythic apps 7. Server OSs: ArchLinux, Debian, Alpine 8. Continuous Integration: CI Scripting in GitLab, Jenkins, CloudBuild 9. Team/Task management and boards in Jira 10. Cloud service providers: GCP, AWS For me nothing is impossible. Have problem - I'll find solution, only question is time. I would love the opportunity to work with you on your project!

BlockchainSoftware ArchitectureBack-EndOdinElixirMongoDBMySQLCouchbaseCouchDBWebSocketGo (Golang)FlutterGraphQLNestJSTypeScriptGoogle Cloud PlatformDocker swarmDockerKubernetesEntrepreneurshipDartPostgreSQLLinuxPHPSMPPNode.js