David Hans

David Hans Full Stack Developer, Blockchain Developer, Smart Phone App Developer Accomplished IT professional with 5+ years of experience in solution design, architecture, and application development in web and Android / iPhone or client environments. Record of success in leading projects that have increased revenue, as well as savings. Well-versed in software development life cycle and skilled architect. Recognized for ability to lead, build relationships with key personnel and complete projects on time. Exceptional developer with skills to create, design, and implement enterprise solutions for clients. -943 N Broadway, Chinatown, Los Angeles, California Technical Proficiency Experience ⚫ Programming Languages : JavaScript, HTML, CSS, SQL, C++, Python, JAVA ⚫ Database : MySQL, MongoDB ⚫ MEAN Stack : MongoDB, Node.js, Angular, Express.js ⚫ Ecommerce : WooCommerce, EC-CUBE, Shopify ⚫ Web Service : REST, JSON, Firebase, SEO, Google Cloud ⚫ MVC Framework : CodeIgnitor, Laravel, Zend, CakePHP ⚫ Blockchain : Web3, Solidity, Python ⚫ Smart Phone Stack : Kotlin, Android, Objective-C, Swift ⚫ Hybrid Stack : Xamarin, C# Senior Full Stack Developer, Focused on BackEnd C/C++ Programming Solidity MERN Web3js MongoDB S-ONE,Inc., JAPAN Apr.2017~Dec.2021 Achievements/Tasks ❖ Built Biliard game using MongoDB, Express.JS, Node. ❖ Built Real Estate Transaction System using Node.js & Express, Google Firebase service and developed Android & iPhone Application for clients with Xamarin hybrid language. ❖ Using J2EE and Spring, API Backend System for delivering dishes to order, Active Rides(Taxi Service), and NowNow App. ❖ Developing several shopping system and Blog sites with WordPress, ECCUBE and Shopify. ❖ Developing a membership website and photography & media website using PHP, CSS and MySQL. ❖ Working with modern MEAN stack frameworks like Angular, Vue… ❖ Built ECR(Electronic Clinic Record) system for medical providers. ❖ Using several PHP frameworks including Laravel, CI, CakePHP for various projects like Ticket Booking System. ❖ Developed app integration with REST and other APIs for Google Maps, social media logins, several payment processors and other 3rd party services. ❖ Fixed bugs from existing websites and implemented enhancements that significantly improved web functionality and speed. Model-View-Controller Senior Full Stack Developer As a Freelancer JAVA Jan.2022~ Achievements/Tasks Teamwork Communication Problem Solving ❖ Developed some Ecommerce sites using HTML/CSS, JavaScript, WordPress, Shopify and Magento. https://pawscollections.com/ https://originnscoffee.com/ https://shopmarthas.com/ https://www.cabanacoat.com/ https://www.manitobah.com/ https://sevengramscaffe.com/ ❖ https://bluestarcoffeeroasters.com/ https://bailly.co/ Very Clean and Neat Designing and making a LIVE Website from Figma with React.js as much as working very efficient and less time-consuming. https://finnobot-assistant.fintractglobal.com/ https://www.hellofresh.com/ https://redboxglobal.com/ https://pcrpro.live ❖ ❖ Expert with GitHub, AWS, Heroku, API Integration Database, API integrations, Payments Integrations using PayPal / Stripe / Authorize.net and 2checkout, data analysis, Twilio, MailChimp, SES, Klaviyo and Zoho integrations etc https://www.aviaryplatform.com/ https://coralandtusk.com/ https://www.competitorfox.com/ https://atlantismusic.com.au/ https://todoencargo.com/ https://khavenswim.com/ https://bagamour.com/ https://www.ethey.com/ https://worldfare.com Personal Skills ❖ Good time management skills, prioritization skills ❖ Clear and effective communication skills ❖ Able to meet tight deadlines ❖ Superior attention to detail ❖ Can work efficiently with minimum supervision ❖ Willing to go the ‘extra mile’ to get things done ❖ Language Innovative, always full of new ideas & suggestions Education Bachelor’s Degree of Computer Science English University of Hong Kong Full Professional Proficiency Sep. 2012 - Sep. 2016 Chinese Courses Native or Bilingual Proficiency Japanese Native or Bilingual Proficiency Operating System Architecture, Data Structure and Algorithms, Software Engineering & Quality Assurance, Signal and Processing, Digital Circuit, Embedded System, AI & System Design, Relational Database Design, Network & Communication Achievements Web Systems & Services (PHP Frameworks, JAVA, Node.js, Vue.js, Angular, React.js, Ruby on Rails, AWS, REST API) https://kushiroshigoto.com/ https://www.ts-ustory.jp/ http://necfru.jp/ https://legolas-robinhood-clone.herokuapp.com/ https://www.eventhi.io/ https://lift.co/ https://studykik.com/ http://melty-app.com https://www.tsuhannews.jp http://yakyunote.com/ https://www.tsuhantenshoku.com/ http://www.kuchikominews.com/ https://www.mirumiru.jp/ https://www.bitcampus.net/ https://www.foresta.jpn.com/database/index.html https://marketdive.net/ http://link.himejistyle.jp/ https://goodpencil.jp/ https://naturalgreen.jp/ https://coco-factory.jp/ https://www.pro-seeds.com/ http://www.kurashi-no-techo.co.jp/ https://www.sigmaxyz.com/ https://newer.tokyo/ http://naitei-bank.jp/ https://onepiece-rental.net/ https://www.kinjoseimen.com/ https://www.hidagyu-tohta.com/ https://manualnet.jp/eccube3_unimall/html/ https://www.tankumakita.jp/shopping/ https://www.aicheese.net/ https://bel-entry.com/ https://www.belmate.jp/ https://www.yogatown.jp/ https://cattobi.com/ https://prod.rsupport.biz/ https://www.sola-pro.net/phdsys/ https://jesra.app-onlineface.com/ https://order.r-su.biz/ https://fanista.co.jp/ https://breeder-one.jp/ https://satei.partners-od.jp/ https://cart.ove-official.jp/merchandises https://blog.wacul.co.jp/ http://ange-vierge-anime.com/ http://reien-info.jp/ https://www.dai-one.jp/ http://boseki-info.jp https://yogafest.backlog.jp/ https://www.gasspec.jp/mitsumori/ http://www.bitcampus.net/ Mobile Apps (Kotlin, Android, Swift, Objective-C, Xamarin-C#) - Fitness & Bodybuilding https://apps.apple.com/us/app/fitness-bodybuilding-pro/id- https://play.google.com/store/apps/details?id=softin.my.fast.fitness - English Grammar Book https://apps.apple.com/us/app/english-grammar-book/id- https://play.google.com/store/apps/details?id=com.talkenglish.grammar - Melty キャバ嬢・ホステスのための顧客管理アプリ https://apps.apple.com/jp/app/melty%E3%82%AD%E3%83%A3%E3%83%90%E5%AC%A2%E3%81%AE%E3 %81%9F%E3%82%81%E3%81%AE%E9%A1%A7%E5%AE%A2%E7%AE %A1%E7%90%86%E3%82%A2%E3%83%97%E3%83%AA/id-#? platform=iphone - ToDo https://play.google.com/store/apps/details?id=com.twistedgenius.todolist - Calculator M https://play.google.com/store/apps/details?id=com.moblynx.calculatorm - ネットカフェまっぷ https://apps.apple.com/us/app/ネットカフェまっぷ/id- - 車修理市場 https://apps.apple.com/us/app/車修理市場/id- - Active Rides(Taxi Service) https://apps.apple.com/us/app/active-rides/id-#?platform=iphone https://play.google.com/store/apps/details?id=com.activerides.taxi.company.app &hl=en - NowNow App https://play.google.com/store/apps/details?id=com.xamarin.jp.akira.NowNowAp p https://apps.apple.com/us/app/nownowapp/id-?ls=1 https://play.google.com/store/apps/details?id=com.jp.onestep.newsapp https://play.google.com/store/apps/details?id=com.jp.saiki.yogaapp https://play.google.com/store/apps/details?id=com.deliver.postapplication https://play.google.com/store/apps/details?id=jp.sumoquiz.app&hl=ja https://play.google.com/store/apps/details?id=com.driver.gest https://play.google.com/store/apps/details?id=com.liveitandroid.liveit https://play.google.com/store/apps/details?id=air.LiveitAfiliados https://play.google.com/store/apps/detailsid=net.leafapps.baseballnews https://play.google.com/store/apps/details?id=com.talkenglish.grammar&hl=en https://play.google.com/store/apps/details?id=com.talkenglish.beginner&hl=en https://play.google.com/store/apps/details?id=com.xamarin.budi.owner https://play.google.com/store/apps/details?id=com.xamarin.budi.tenant https://apps.apple.com/us/app/bitcoin-news/id-?ls=1 https://apps.apple.com/jp/app/%E5%B7%9D%E5%B3%B6%E5%92%8C%E6 %AD%A3%E3%83%A1%E3%83%AB%E3%83%9E%E3%82%AC%E3%82%A2%E3%83%97%E3%83%AA%E7%89%88/id-?mt=8 https://apps.apple.com/jp/app/朝ヨガライブ/id- https://apps.apple.com/us/app/川本メディア/id- https://itunes.apple.com/jp/app/da-xiang-pukuizu/id-?mt=8 https://itunes.apple.com/cn/app/basic-english-for-beginners/id- https://itunes.apple.com/cn/app/english-grammar-book/id-?m=8 FUSEN+（付箋メモアプリ） 名言アプリ 2ch まとめブログリーダー！~まとめ VIEWER 無料~ 高校野球ニュース！ キッズキャンパス しゃべる図鑑!