15 JavaScript Developer interview questions and answers
Find and hire talent with confidence. Prepare for your next interview. The right questions can be the difference between a good and great work relationship.
What are the advantages of using JavaScript?
You want a developer who really knows how to play to the strengths of your chosen platform. Some key advantages of JavaScript are listed below for your convenience.
- Lightweight: JavaScript can be executed within the userâs browser without having to communicate with the server, saving on bandwidth.
- Versatile: JavaScript supports multiple programming paradigmsâobject-oriented, imperative, and functional programming and can be used on both front-end and server-side technologies.
- Sleek Interactivity: Because tasks can be completed within the browser without communicating with the server, JavaScript can create a smooth "desktop-like" experience for the end user.
- Rich Interfaces: From drag-and-drop blocks to stylized sliders, there are numerous ways that JavaScript can be used to enhance a websiteâs UI/UX.
- Prototypal Inheritance: Objects can inherit from other objects, which makes JavaScript so simple, powerful, and great for dynamic applications.
What are the disadvantages of using JavaScript?
Experienced coders wonât just be able to rave about their favorite languageâs strengthsâthey will also be able to talk about its weaknesses. JavaScriptâs main weakness is security. Look for answers on how it can be exploited. A secondary weakness is JavaScriptâs ubiquity and versatilityâit can be a double-edged sword in that thereâs a lot of room for programming quirks that can lead to inconsistent performance across different platforms.
Explain the difference between classical inheritance and prototypal inheritance.
The great thing about JavaScript is the ability to do away with the rigid rules of classical inheritance and let objects inherit properties from other objects. - Classical Inheritance: A constructor function instantiates an instance via the "new" keyword. This new instance inherits properties from a parent class. - Prototypal Inheritance: An instance is created by cloning an existing object that serves as a prototype. This instanceâoften instantiated using a factory function or "Object.create()"âcan benefit from selective inheritance from many different objects.
Give an example of a time that you used functional programming in JavaScript.
Functional programming is one of the key paradigms that makes JavaScript stand out from other languages. Look for examples of functional purity, first-class functions, higher-order functions, or using functions as arguments and values. Itâs also a good sign if they have past experience working with functional languages like Lisp, Haskell, Erlang, or Clojure.
Give an example of a time when you used Prototypal OO in JavaScript.
Prototypal OO is the other major programming paradigm that really lets JavaScript shineâobjects linked to other objects (OLOO). Youâre looking for knowledge of when and where to use prototypes, liberal use of "Object.assign()" or mixins, and a solid grasp of concepts like delegation and concatenative inheritance.
What is a RESTful Web Service?
REST stands for Representational State Transfer, an architectural style that has largely been adopted as a best practice for building web and mobile applications. RESTful services are designed to be lightweight, easy to maintain, and scaleable. They are typically based on the HTTP protocol, make explicit use of HTTP methods (GET, POST, PUT, DELETE), are stateless, use intuitive URIs, and transfer XML/JSON data between the server and the client.
Which frameworks are you most familiar with?
You can tell a lot about a programmer from the frameworks theyâre familiar withâAngularJS, React, jQuery, Backbone, Aurelia, and Meteor are just some of the more popular ones available. The key here is to make sure the developer youâre engaging has experience with the framework youâve chosen for your project.
How experienced are you with MEAN?
The MEAN (MongoDB, Express, AngularJS, and Node.js) stack is the most popular open-source JavaScript software stack available for building dynamic web appsâthe primary advantage being that you can write both the server-side and client-side halves of the web project entirely in JavaScript. Even if you arenât intending to use MEAN for your project, you can still learn a lot about the developer when they recount their experiences using JavaScript for different aspects of web development.
Explain the differences between one-way data flow and two-way data binding.
This question may seem self-explanatory, but what youâre looking for is a developer who can demonstrate solid understanding of how data flows throughout the application. In two-way data binding, changes to the UI and changes to the model occur asynchronouslyâa change on one end is reflected on the other. In one-way data binding, data only flows one way, and any changes that the user makes to the view will not be reflected in the model until the two are synced. Angular makes implementing two-way binding a snap, whereas React would be your framework of choice for deterministic one-way data flow.
Determine the output of the code below. Explain your answer.
console.log(0.1 + 0.2);
console.log(0.4 + 0.1 == 0.5);
This is a trick question in that at first glance, you might expect the console to print out "0.3" and "true." The correct answer is that you canât know for sure, because of how JavaScript treats floating point values. In fact, in the above example, it will print out:
0.30000000000000004
false
Determine the output of the code below. Explain your answer.
var myObject = {
egg: "plant",
func: function() {
var self = this;
console.log("outer func: this.egg = " + this.egg);
console.log("outer func: self.egg = " + self.egg);
(function() {
console.log("inner func: this.egg = " + this.egg);
console.log("inner func: self.egg = " + self.egg);
}());
}
};
myObject.func();
This question is designed to test the intervieweeâs understanding of scope and the "this" keyword. In the outer function, both "this" and "self" correctly refer to "myObject" and can subsequently access "egg." In the inner function, "self" remains within scope while "this" can no longer refer to "myObject"âresulting in the output below:
outer func: this.egg = plant
outer func: self.egg = plant
inner func: this.egg = undefined
inner func: self.egg = plant
Write a function that can determine whether a string is a palindrome in under 100 characters.
A palindrome is a word, phrase, or sequence of letters that reads the same backwards or forwards. It also makes a great test for checking their ability to handle strings.
function isPalindrome(str) {
str = str.replace(/s/g, '').toLowerCase();
return (str == str.split('').reverse().join(''));
}
How would you empty the array below?
var emptyArray = [âthisâ, âarrayâ, âisâ, âfullâ];
This deceptively simple question is designed to test your prospective coderâs awareness of mitigating potential bugs when solving problems. The easiest method would be to set "emptyArray" equal to "[ ]"âwhich creates a new empty array. However, if the array is referenced anywhere else, the original array will remain unchanged. A more robust method would be "emptyArray.length - 0;"âwhich not only clears the array but updates all reference variables that point to this original array. Some possible solutions are listed below:
emptyArray.length = 0;
emptyArray.splice(0, emptyArray.length);
while(emptyArray.length) {
emptyArray.pop();
}
emptyArray = []
Determine the output of the code below. Explain your answer.
var lorem = { ipsum : 1};
var output = (function() {
delete lorem.ipsum;
return lorem.ipsum;
})();
console.log(output);
The output would be undefined, because the delete operator removed the property "ipsum" from the object "lorem" before the object was returned. When you reference a deleted property, the result is undefined.
Are you a team player? Give an example of a time when you had to resolve a conflict with another member on your team.
There are many jobs associated with putting together an application, and chances are high that your new JavaScript developer will at the very least have to interface with a designer. Youâre looking for a developer who can communicate effectively when they need to, responds to emails, and knows how to coordinate with other branches of a project.
JavaScript Developer Hiring Resources
Explore talent to hire Learn about cost factors Get a job description templateJavaScript Developers you can meet on Upwork
- $45/hr $45 hourly
Shun Kong Y.
- 5.0
- (9 jobs)
Solihull, ENGLANDJavaScript
Amazon Vendor CentralSAP BASISSAP ERPXSLTSAP Business ObjectsOAuthApache CordovaOpenUI5Microsoft Visual C++RESTful APIXMLSAP HANATransact-SQLC#Recently helped client: - Tested EDI processing with simulated inbound XML message - Updated formula in Crystal Report printout - Automated data loading to legacy 3rd party application using Power Automate - Verified data records using Power Query / Excel / MSSQL - Transformed Onix 3.0 XML using Excel, VBA and XSLT - Built POC on activating OAuth2 mechanism for SAP API - Deciphered legacy ABAP programs - Pinpointed performance bottleneck Calc. View - Reduced MySQL query to sub-second Skill Possessed: - Programming: .NET, C#, Visual Basic, C++, Excel VBA, Java - Web: XML, XSLT, HTML, CSS, Javascript, oAuth, oData, OpenUI5, Apache Cordova - BI & Database: Power BI, Power Query (M), MSSQL, T-SQL, SAP HANA (Attribute/Analytic/Calculation Views), MySQL - SAP: ERP (FI / CO / SD / MM / PP / PS), BASIS, BO - ABAP: Report, SAPScript, Smart Scripts, BAPI, User Exits, LSMW, IDoc - $35/hr $35 hourly
Eyamin H.
- 5.0
- (202 jobs)
Magura, DHAKAJavaScript
WooCommerceSquarespacePHPMySQL ProgrammingElementorWordPress PluginCMS DevelopmentTheme DevelopmentPSD to HTMLWordPressBlogHTML5CSS 3BootstrapjQueryHi. Thank you so much for coming here. I'm WordPress developer. I have been working with WordPress last 10 years. I have developed a wide range web development project. Experience ================= *** html5 , css , css3 , sass , bootstrap , Custom Responsive , JavaScript , jQuery , jQuery Ui , Ajax , Gulp Automation , php , WordPress , WordPress Theme And Plugin Development , Git , Bit-bucket , GitHub ****** #Squarespace Website Builder is my new crush. :) Provide Services =============== ** Full Functionality WordPress theme development with Woo-commerce Support. ** Custom WordPress Plugin Development ** Psd to WordPress. ** Pixel Perfect WordPress Website using page Builder. * Elementor Builder * Divi Builder * Visual Composer * SiteOrigin * Beaver Builder * Fushion Builder ** WordPress Theme Customization any kind of theme. ** Woo-commerce for eCommerce website . * Have Very good knowledge about product feature and attribute ** Psd to html. ** Psd to html with Bootstrap. ** Any Kind of WordPress problem. ** 100% responsive Website. ** Any kind of JQuery, JavaScript Problem. ** Site page Speed. (gtmetrix) , )( Google PageSpeed Insights). My aim is to give you back your project within your right time. and to work in a standard way where clients will be "SATISFIED" of my work . - $35/hr $35 hourly
Muhammad N.
- 5.0
- (22 jobs)
Ali Pur Chattah, PUNJABJavaScript
ReduxFlaskNode.jsSocial Media Account IntegrationHTML5ReactTypeScriptiOSAndroidGraphQLMongoDBReact NativePythonđ Upwork Top-Rated Developer đ đ°I'll give life to your ideas đ° Full-stack software developer with 5 years of experience specializing in designing and developing custom websites and large-scale applications with a focus on client satisfaction. I am well equipped in following skills: - React - Material-UI - Materialize-CSS - React Native - Native Base - MongoDB - MySQL - Alchemy - Postgres SQL - Firebase - GraphQL - Python - Flask - Web Scrapping Server/Backend Development: I can write backend or your mobile with secure management. It will be restfull so you can use it anywhere for web and mobile. I will write secure backend in flask with graphql. We will use Attribute-based Access Control(ABAC) and Graph-based Access Control(GBAC) for authorization and prevent from malicious users. Web and Mobile App Development: Looking to build Hybrid App using React Native ? If yes, please feel free to connect with me as I have exemplary skills and experience in building highly scalable and robust cross platform mobile apps using react native and firebase. My Services & Expertise: - UI/UX improvements. - Bug fixing in existing app. - Design improvements. - API integration. - Camera, Audio/Video features. - Server API development to use it with app. - Cross Device support - Firebase integration. - Push Notifications. - Social Logins. - Location based app. - Maps integration. DEVELOPMENT PROCESS Collect & Analyze Client Requirements Wireframing App Flow Design Development Maintenance & Support Looking forward to hearing your idea and/or business needs and help you build it!
- $45/hr $45 hourly
Shun Kong Y.
- 5.0
- (9 jobs)
Solihull, ENGLANDJavaScript
Amazon Vendor CentralSAP BASISSAP ERPXSLTSAP Business ObjectsOAuthApache CordovaOpenUI5Microsoft Visual C++RESTful APIXMLSAP HANATransact-SQLC#Recently helped client: - Tested EDI processing with simulated inbound XML message - Updated formula in Crystal Report printout - Automated data loading to legacy 3rd party application using Power Automate - Verified data records using Power Query / Excel / MSSQL - Transformed Onix 3.0 XML using Excel, VBA and XSLT - Built POC on activating OAuth2 mechanism for SAP API - Deciphered legacy ABAP programs - Pinpointed performance bottleneck Calc. View - Reduced MySQL query to sub-second Skill Possessed: - Programming: .NET, C#, Visual Basic, C++, Excel VBA, Java - Web: XML, XSLT, HTML, CSS, Javascript, oAuth, oData, OpenUI5, Apache Cordova - BI & Database: Power BI, Power Query (M), MSSQL, T-SQL, SAP HANA (Attribute/Analytic/Calculation Views), MySQL - SAP: ERP (FI / CO / SD / MM / PP / PS), BASIS, BO - ABAP: Report, SAPScript, Smart Scripts, BAPI, User Exits, LSMW, IDoc - $35/hr $35 hourly
Eyamin H.
- 5.0
- (202 jobs)
Magura, DHAKAJavaScript
WooCommerceSquarespacePHPMySQL ProgrammingElementorWordPress PluginCMS DevelopmentTheme DevelopmentPSD to HTMLWordPressBlogHTML5CSS 3BootstrapjQueryHi. Thank you so much for coming here. I'm WordPress developer. I have been working with WordPress last 10 years. I have developed a wide range web development project. Experience ================= *** html5 , css , css3 , sass , bootstrap , Custom Responsive , JavaScript , jQuery , jQuery Ui , Ajax , Gulp Automation , php , WordPress , WordPress Theme And Plugin Development , Git , Bit-bucket , GitHub ****** #Squarespace Website Builder is my new crush. :) Provide Services =============== ** Full Functionality WordPress theme development with Woo-commerce Support. ** Custom WordPress Plugin Development ** Psd to WordPress. ** Pixel Perfect WordPress Website using page Builder. * Elementor Builder * Divi Builder * Visual Composer * SiteOrigin * Beaver Builder * Fushion Builder ** WordPress Theme Customization any kind of theme. ** Woo-commerce for eCommerce website . * Have Very good knowledge about product feature and attribute ** Psd to html. ** Psd to html with Bootstrap. ** Any Kind of WordPress problem. ** 100% responsive Website. ** Any kind of JQuery, JavaScript Problem. ** Site page Speed. (gtmetrix) , )( Google PageSpeed Insights). My aim is to give you back your project within your right time. and to work in a standard way where clients will be "SATISFIED" of my work . - $35/hr $35 hourly
Muhammad N.
- 5.0
- (22 jobs)
Ali Pur Chattah, PUNJABJavaScript
ReduxFlaskNode.jsSocial Media Account IntegrationHTML5ReactTypeScriptiOSAndroidGraphQLMongoDBReact NativePythonđ Upwork Top-Rated Developer đ đ°I'll give life to your ideas đ° Full-stack software developer with 5 years of experience specializing in designing and developing custom websites and large-scale applications with a focus on client satisfaction. I am well equipped in following skills: - React - Material-UI - Materialize-CSS - React Native - Native Base - MongoDB - MySQL - Alchemy - Postgres SQL - Firebase - GraphQL - Python - Flask - Web Scrapping Server/Backend Development: I can write backend or your mobile with secure management. It will be restfull so you can use it anywhere for web and mobile. I will write secure backend in flask with graphql. We will use Attribute-based Access Control(ABAC) and Graph-based Access Control(GBAC) for authorization and prevent from malicious users. Web and Mobile App Development: Looking to build Hybrid App using React Native ? If yes, please feel free to connect with me as I have exemplary skills and experience in building highly scalable and robust cross platform mobile apps using react native and firebase. My Services & Expertise: - UI/UX improvements. - Bug fixing in existing app. - Design improvements. - API integration. - Camera, Audio/Video features. - Server API development to use it with app. - Cross Device support - Firebase integration. - Push Notifications. - Social Logins. - Location based app. - Maps integration. DEVELOPMENT PROCESS Collect & Analyze Client Requirements Wireframing App Flow Design Development Maintenance & Support Looking forward to hearing your idea and/or business needs and help you build it! - $97/hr $97 hourly
Dmitrii D.
- 4.9
- (68 jobs)
Almaty, ALMATY OBLYSYJavaScript
TypeScriptAWS Systems ManagerForex TradingMySQLReactSmart ContractMagento 2Ecommerce Website DevelopmentPHPKubernetesSearch Engine OptimizationAPI DevelopmentLinux System AdministrationMagentoHi, My name is Dmitrii Dmitriev I am an expert eCommerce developer specializing in Magento Adobe Commerce Enterpise/Cloud/Open Source/pwa-studio. I believe my strong points are my Exactness and Punctuality. My #1 goal will always be to meet your needs and deadline. When working on a new project, I like to speak with the client to have a clear understanding of his/her needs and vision of the project. Iâm honest and fair. Development, DevOps, CI-CD, Linux System, and Unix-related platform/services are my passion. Skills: + Magento Open Source, Adobe Commerce EE/Cloud: Automation the Products Inventory Management - PIM up to 37M products - including categories, configurable products, attribute sets, attributes, images, stocks. + Development of a mobile application that will be immediately compatible with Apple App Store, Google Play Store, Microsoft Store. + Development Magento pwa-studio extensions, custom theme: Venia / pwa-studio compatible mode. + Deployment, migration Magento pwa-studio from the scratch. + Magento integration with: Amazon, eBay, Walmart, Bonanza, Google Shopping/Google Mearchant, Facebook Shop, Wish, Houzz, Eatsy, Facebook Marketplace, Best Buy, Michaels, Reverb, Mercadolibre, custom integration. + Magento Open Source, Adobe Commerce EE/Cloud CI-CD and DevOps with the zero downtime deployments. + Development Magento Open Source, Adobe Commerce EE/Cloud extensions - e.g: shipping/payment/seo..., theme from the scratch, modification, overriding; + Magento Open Source, Adobe Commerce EE/Cloud performance - providing instantly opened pages. + Object Oriented PHP 5.x/8.x Developer including PHP frameworks like Symfony: over 24 years of web development experience; + Magento Open Source, Adobe Commerce EE/Cloud API / Rest / SOAP / XML-RPC with external services; + Magento Open Source, Adobe Commerce EE/Cloud Migrating: EE/Cloud from 1 to 2, from Server A to Server B; + The deep knowledge base of Magento Open Source, Adobe Commerce EE/Cloud EE/Cloud 1/2 architecture; + Creating/installing a custom docker image/container, docker-compose from the scratch; + Core web: PHP, React, Reactjs, Typescript, Node, XML, JSON, YAML, HTML/CSS, JavaScript: Reactjs, jQuery, Angular JS, Knockout JS, RequireJS, Vue JS, MySQL, Mariadb, Percona, Redis, Manticore, Solr, Sphinx, Elasticsearch, Opensearch, Varnish, Bash, Nginx, Apache, Symfony, Laminas, Pimcore, Git / Subversion; + UNIX / Linux setup, configuration from the scratch, administration; + Development-trading Bot, Trading Robot / HFT - HIGH-FREQUENCY TRADING Bots / HFT Crypto Trading Bot with support of 100+ exchanges. + Development Interactive Brokers HFT Bot / HFT Robot. + Development Fiat + crypto-currencies gateway; + Bash scripts development; + Scrape/Scraping a data with advanced regular expressions + from preferred websites to the specified formatted e.g: CSV file, e.g., attributes.csv products.csv; + Installation / configuration: * Nginx, Angie, Apache, Lighttpd web servers * Varnish cache server with HTTPS support; * Redis cache server; * OpenVPN, XRAY: VLESS, XTLS, REALITY, XUDP, PLUX services with multiple clients, e.g: hiddify; * RabbitMQ message broker; * Ejabberd XMPP Server; * DNS/Bind name server; * Elasticsearch / Opensearch; * Mail Server: POP3/IMAP/SMTP with SSL - $35/hr $35 hourly
Kimera M.
- 5.0
- (4 jobs)
Kampala Central Division, CJavaScript
Next.jsTailwind CSSReduxGraphQLReact BootstrapRESTful APIReactTypeScriptNode.jsMaterial DesignFigmaCSS 3Adobe XDHTML5Hi Thanks for stopping byđ Online presence of any business is a major attribute to it's success. Every business should always make it's brand known to the general public which can easily translate into revenue. Do your needs fit into any of these questions listed below? Send me a message and we discuss about your project. đ¤Do you have an XD/Figma designs that you want to translate into reusable code using HTML, CSS, JavaScript or React Js? đ¤ Do you want a website for any business but you don't know where to start from? đ¤ Is your website not responsive enough to be used on all platforms and you want it made responsive? đ¤ Want to add a particular functionality to your website? đ¤Want to create a more engaging user experience from your brand than just displaying content on static web pages? đ¤Finding it hard as to come up with a "compelling" and a "engaging" designs and flow for your brand? đ¤ Have any API you want integrated to your designs? Name it.., I'm here to help you with anything regarding web design and development from design to trouble shooting all the errors aligned with your website to personalization of your website content and design with in a short period of time . With my expertise and knowledge, I got you covered with everything to do with web designing and development. For the past 5 years, I've been building web applications for all people from individuals to businesses owners who are interested in all sorts of functionalities like E-commerce, business profiles, custom systems with custom functionalities, Custom dashboards among others. I have a very efficient workflow and process while doing all this. I have expertise in developing beautiful, professional, reliable and affordable websites I'm proficient in the following: đ Languages: âď¸ HTML âď¸ CSS âď¸ JavaScript âď¸ Typescript âď¸ Sass âď¸ Node JS đ Frame Works âď¸ React Js âď¸ Express Js âď¸ Next Js đ CSS Options âď¸ Tailwind CSS âď¸ Bootstrap âď¸ Material UI âď¸ Chakra UI âď¸ Shadcn âď¸ Antd âď¸ Styled Components âď¸ CSS modules đ Design Tools âď¸ Figma âď¸ Adobe XD âď¸ Photoshop đVersion Control âď¸ Git âď¸ GitHub âď¸ GitLab âď¸ Azure DevOps đ Other Technologies âď¸ Redux âď¸ React Router âď¸ Postman âď¸ Heroku âď¸ MongoDB âď¸ Linting Here's what to expect while working with međ: âď¸ Pixel Perfect website designs and layout. âď¸ Fully responsive websites for both Mobile and Desktop Devices. âď¸ Fully Compatible websites with all browsers like Chrome, Firefox, Microsoft Edge, etc. âď¸ Clean, editable, reusable and tested code that can be changed from time to time. âď¸ Fully tested and finished web designs and code on real devices. âď¸ Expert help on trouble shooting errors aligned with website layouts in any browser. âď¸ Quick turn around and meeting deadlines no matter the size of the project. âď¸ Effective Communication and Attention to detail on every little aspect. âď¸ Full time Availability. Look at some of my work in relation to web design and development as listed in the projects section. When you hire međ¨âđź, here's what we would do: 1: First, click the invite button to invite me to your jobđŠ 2: Once there, I'll jump on a phone call with you/video callđ or exchange ideas with you about your needs. 3: We'll go over the details, colorsđ¨, assets, and the entire design/look of the template, design etc., until we have reached a middle ground So, if that sounds good, click the "invite" button, and we can start right away. Take a look at my website for more information kimeramoses.com Thanks for taking time to view my profile đ¤. Cheersđââď¸, Kimera M. - $25/hr $25 hourly
Firmansyah N.
- 5.0
- (6 jobs)
Purwokerto, JTJavaScript
Google Tag ManagerWordPress ThemeWebflowWebsite OptimizationGoogle AnalyticsCSSHTMLNext.jsWordPressHi, Iâm a Webflow developer expert. I can help turn your Figma into fully responsive website, well-structured (client-first) layouts, and SEO-optimized results. My specialized skill: - Client first, relume, finsweet attribute - Custom code using Javascript - Responsive and pixel perfect integration - Tracking integration: GTM, Facebook pixel, Linkedin, other or custom Why should hire me: đ Fast response & give daily updates đ Experienced in agency, startup, & big companies Tools that I use on the daily basis: đ Figma, Click-Up đ Webflow, Wordpress (native, elementor), Nextjs đ AWS, DO, GCP Category Areas: đĽ Corporate profile đĽ Product website đĽ eCommerce website đĽ Agency custom tools đĽ Agency website Let's work together to create amazing web solutions! đ â Keywords to Find Me #Web Developer #Website Builder #Webflow #WordPress #Next.js #Performance Optimization #SEO #HTML #CSS #CSS3 #PHP #jQuery #JavaScript #Web Project Management #Web Design #Freelance Developer #Professional Developer #Web Development Services #Independent Web Projects #Web Team Collaboration - $50/hr $50 hourly
Kian M.
- 3.9
- (14 jobs)
Lexington, MOJavaScript
HTMLReactAutomationn8nGoogle Sheets AutomationGoogle SheetsGoogle Apps ScriptNode.jsTypeScriptHi, I'm Kian! It's nice to meet you! I hate boring, repetitive work, and I'm sure you do too! Having to do the same thing over and over again is emotionally draining and hard. I'm a freelance developer and automation specialist with a passion for simplifying workflows and tasks, especially ones that integrate with Google Workspace or Google Cloud. Apps Script provides a quick, flexible, and powerful way to create automation that works with Google's services, as well as integrating with other platforms. I'm most proud of my ability to get up to speed very quickly. For a previous company, I learned their programming language of choice on-the-job, and was mentoring my coworkers within the first few weeks! Quick bit of humor: I loved taking apart electronics as a kid. I'd try to build robots, combine computers together to create more powerful ones, etc. I'd like to attribute my skills to an earlier experience, however. When I was 3 years old, I threw my parents' camera down the stairs. That moment started it all! :) Thanks for reading! Kian. - $20/hr $20 hourly
Harish Chandra S.
- 4.9
- (6 jobs)
Bangalore, KARNATAKAJavaScript
Ecommerce WebsiteTwilioMandrillSendGridAuthorize.NetStripe APIPayPal IntegrationRESTful APIjQueryAJAXCodeIgniterLaravelMySQLPHPI am a web developer with 10+ years of experience in web development. Involved in developing many web sites and web application from scratch in different industry verticals. Mainly involved in building stable and sustainable applications by maintaining clean, simple, and reusable code. Customer satisfaction, Building long-term relationship, and Quality work are my top priorities. My skillset involves the following: ⢠PHP, MySQL, HTML/HTML5, CSS/CSS3, JavaScript, jQuery, AJAX, Bootstrap ⢠MVC Framework: CodeIgniter, Laravel, Cake PHP ⢠Front End: Vue JS , React JS . Angular JS ⢠CMS: WordPress ⢠Payment Gateway Integration: Authorize.net, Stripe, PayPal, 2checkout, Eway, Pay4later, Google Checkout, Payment Express, Brain Tree, Pay4later ⢠Social Networking API: Facebook, Twitter, Linkedin, Google ⢠Twitter Bootstrap ⢠Code Management Tool: Bit Bucket, Git Hub, SVN, JIRA ⢠Strong knowledge of AWS ec2 instance setup for php mysql phpmyadmin sftp account. ⢠Strong knowledge of RDS database setup for ec2 instance and configure access. I am reliable, trustworthy, fast, focused, and pay attention to details in projects. Thus the attribute of accuracy and on-time delivery is a win-win situation for any employer. Always open to learning new things and ready to take the challenges. It would be a pleasure for me to be part of your team and contribute. I will be glad to support in any web design and development project and happy to answer any questions you have. Looking forward to your valuable response! - $30/hr $30 hourly
Ali A.
- 5.0
- (10 jobs)
Lahore, PBJavaScript
RSpecWeb Services DevelopmentAPIDatabase DesignRuby on RailsRubyPostgreSQLAmazon Web ServicesMySQLWeb DevelopmentHTMLAngularJSI've studied computer science. I have an experience of Web Development with the flavor of HTML, CSS, Bootstrap, JavaScript and other web development tools. I really enjoy this fact that thousands of users use applications that are developed by me. The ultimate dream is that one-day thousands will grow into millions or billions. I HAVE A DREAM! Overall if summarized my experience that would be exploring, organizing information, problem-solving and implementation. Languages are essential for expressing your programming skills overall. From EXPLORING attribute I have worked around lots of different languages. 1) Ruby 2) Typescript 3) Javascript 4) Python ( a new sensation I always wanted to explore Erlang but then I found this beauty. Python leverages the Erlang VM, known for running low-latency, distributed and fault-tolerant systems, while also being successfully used in web development and the embedded software domain.) 5) PHP In assistance to above languages below frameworks come into play, 1) Ruby on Rails 2) Laravel 3) Django Databases are the main central storage of any web application. I got experience in both SQL and NoSQL 1) Postgres 2) Mysql 3) SQLite 4) MongoDB The game never ended on the server side for me. Frontend/public facing part of the web application has been also highly evolved. Everyone wants to use Single Page Applications - The SPAs. I got experience in the following 1) React JS/TS 2) Angular JS Testing and Test Driven Development(TDD) is also an essential thing for any solid applications. I can write automated tests in following 1) RSpec 2) Capybara Deployment is essential to distribute your application out in the wild. I got experience in the following tools and technologies 1) AWS 2) Google Cloud Platforms 3) Capistrano 4) Mina 5) Nginx 6) Passenger Phusion 7) Puma 7) Unicorn - $20/hr $20 hourly
Ruchit P.
- 4.9
- (14 jobs)
Surat, GJJavaScript
AutomationSalesforce CRMAPI IntegrationAdministrative SupportSalesforceAdministrateCustomer Relationship ManagementSalesforce Service CloudSalesforce LightningVisualforceSalesforce Sales CloudApexAPISalesforce App DevelopmentSalesforce certified developer/consultant with 6.5+ years of experience in Salesforce Administration and Development, I have Administrated and operated enterprise-wide medium/large-scale applications and 2 Non-profit org. Experience in managing and custom implementations of Salesforce FSL (Field Service) Products. Salesforce Classic and Apex Development : - Automated the process of routing incoming leads to the appropriate user by defining assignment rules based on various attributes like customer type, product group, and geographical region. - Developed various business processes, record types, queues, and page layout. - Migrated visual-force page from classic to lightning mode(using lightning style sheet page attribute and also did code changes). - Managed Salesforce security including roles, profiles, sharing rules, workflows, and groups. - Reports and Dashboards building/customizations. Notify Dashboard and Reporting details to the subscribed Users over email on daily basis. - Developed Apex Triggers, Apex batch, Apex Scheduled Classes, Test classes, Custom Visualforce pages using Custom controllers and Standard Controllers. - Custom PDF Generation using Apex, VF Page, and LWC Interface Salesforce Lightning/ APIs : - Saving and Displaying data dynamically. - Activity Scorecard generator using LWC. - Used Lightning Standard Attributes in component to ensure security and sharing as well as component reusability. - Worked on various implementations using REST, SOAP, Streaming, BULK, and Google Direction APIs. And Performed data migration and integration Using Ant Migration, Data Loader, Import Wizard, and Workbench tool. - Google Translation API to Detect Language of Incoming Email Body AppExchange Product : - Worked on the Development of Pure Lightning-based AppExchange Product which was aiming to convert the 200 Leads at once using interactive screen and custom configuration settings. - Worked on the development of Canvassing Management AppExchange product which was leveraging the Google Direction APIs to provide the optimized routes between available geo points on the page and allow territory-based task assignments and tracking. Cloud: - Sales cloud - Service cloud - Experience cloud - Health cloud - NPSP Products: - Field Service - DocuSign - Form Assembly - Omnistudio/Omniscripts/Flexcards Trailhead 3-Star Ranger with 30+ Superbadges Additional Skill and Knowledge : - Java Web Development, Basic Python3, Bootstrap, MySQL, JSP servlet, JavaScript, J-Query, HTML/CSS, SEO Improvement. - $20/hr $20 hourly
karan k.
- 4.8
- (137 jobs)
Ludhiana, PBJavaScript
BrandingGraphic DesignElementorEcommerceWordPress PluginWebsite CustomizationPHPShopifyCSSHTMLWeb DevelopmentWeb DesignWooCommerceWordPressđ Top Rated Plus by Upwork đ 20,000+ HOURS clocked on Upwork đź 12+ Years of Experience in WordPress Websites! đŻ 100% Client Satisfaction! đ Reliable, Honest, and Professional! đ Quick Learner and Problem Solver! â° On-Time Delivery! đ¤ Long-Term Partner! I'm a professional skilled Full Stack Developer, well experienced in Website Designing and Development. I have 12+ years of experience in HTML, CSS, JS, Ajax, WordPress, PHP, eCommerce, Woocommerce site setup, Laravel, and different kinds of API handling. I can design and develop any website, like: ================================= â Agency Website/Business Website. â Portfolio Website/Personal Website. â Real Estate Website. â News/Blog/Magazine Website. â Art Gallery/Photographer Website. â Appointment Website. â eCommerce Website/Online Store. â DropShipping Website. đť KEY EXPERTISE: ================================= â WordPress Theme Development & Customization â Responsive Web Design and Development â Elementor Expert â WordPress Expert â WooCommerce Implementation & Customization â Speed Optimization â Custom Post Types & Taxonomies â Fix Website Layout and Performance issues â HTML5, CSS3, JavaScript/jQuery â Mobile Friendly Websites â WordPress Speed Optimization â WordPress Custom Taxonomies â WordPress API Integration â WordPress Website Fixes â WordPress Malware Removal â WordPress Security Integration â HTML5, CSS3, JavaScript/jQuery â â â â SERVICES I PROVIDE TO MY CLIENTS â â â â đ Design and Develop WordPress website from scratch đ Redesign existing WordPress websites đ Migrate website to WordPress from other CMS/Static websites đ Design WordPress website based on Figma, XD, or PSD design đ Design using Page Builders like Elementor Builder, Divi Builder, Visual Composer, Beaver Builder, WPBakery, Oxygen, Fusion Builder, etc. đ Woo-commerce for eCommerce website đ Payment Integration, Cart process, Custom product design functionality đ Have Excellent knowledge about product features and attribute đ PSD to HTML with Bootstrap đ WordPress Custom Post Types, Custom Taxonomy, Custom fields (ACF), Forms and Widgets đ Landing Page Design for Products, Apps, and Lead generation đ WordPress Plugin Development đ WordPress eLearning websites using any Popular plugin (both free and paid) đ PageSpeed Optimization and Performance Improvement đ Ongoing support and maintenance for your WordPress websites đ WordPress Membership sites đ Design and Develop Affiliate websites đ WordPress Blog Websites đ WordPress Debugging đ WordPress Error Fixes đ Troubleshooting WordPress Issues đ WordPress Bug Resolution đ WordPress Customization đ WordPress Child Themes đ Custom WordPress Themes đ Custom Fields in WordPress đ Advanced WordPress Customization đ WordPress Blog Setup đ Content Management with WordPress đ WooCommerce Development đ E-commerce WordPress Sites đ Online Store with WordPress đ WordPress Updates and Maintenance đWordPress Backup and Recovery đ Figma to WordPress Elementor đ WordPress Landing Page Thank you for investing time in reviewing my profile. I assure you of a fruitful association, as my mission is to build enduring relationships. If you find me right, then don't forget to invite me. Best Regards, Karan - $20/hr $20 hourly
Nicholas C.
- 5.0
- (3 jobs)
Samut Prakan, SAMUT PRAKANJavaScript
BootstrapGitHubLaravelcPanelReact NativeMobile AppFull-Stack DevelopmentGradleMySQLPHPEcommerce WebsiteI'm a remote freelance JavaScript/PHP/MySQL full stack developer currently focusing on Laravel + Livewire, with additional experience in mobile app development using React Native and Apache Cordova. I'm looking for remote programming work involving any of these core technologies. I have several years of freelancing experience. Most recently I've been helping to create a boilerplate CRM system with modular functionality that can be plugged in and out of site instances as required. This system leverages Laravel with Livewire 3 for seamless configuration and end user UX. I've also been helping a hotel management company integrate customer tracking into the hotel websites they manage. The last app I made was called M-Gen, an experimental music generation app available on the Play (10K+ downloads) and App (significantly fewer) Stores. I was able to monetize this one, and it paid for itself and some extra bills besides. It used the following technologies: - React Native framework - Pure JavaScript - Server component written in PHP/SQL (I recently achieved a score in the top 5% of all candidates in Linkedin's PHP skills assessment test) - Slim framework for API calls - Gradle (for Andoid) - Xcode/CocoaPods (for iOS) An older app I made, for keepers of pet birds, used the Cordova framework with WebViews. Prior to that, from 2011-2015, I created and sold my own software called Product Attribute Pictures (PAPs), which was an addon for several popular open source e-commerce platforms at the time. It allowed users to showcase variations in their products along the lines of colors, shapes and sizes. Extra addons included the ability to view text over images to create customized products, eg medals, signs and banners. The platforms and technologies involved were: - eCommerce platforms such as osCommerce, ZenCart, OpenCart, Prestashop and WooCommerce - written in PHP/Javascript/SQL - code protection with IonCube Selling my own software led to several freelance programming jobs from clients, at first for customizations to my own code, and then to bespoke projects involving areas such as checkout flow, billing and payment. I went on to work for several of these customers on a continual basis for several years, despite never meeting them in person, and they came mainly from the US, UK and across mainland Europe. When doing freelance work, I would: - Ascertain the business needs behind the project. My degree in business management helped in this - Propose technical solutions if the client had not yet decided on them - Establish milestones for larger projects, with corresponding timeframes - Keep the client updated at regular intervals or as per milestones - Deliver before the agreed timeframe to allow for final adjustments Before that, I worked in the UK for two years at HMRC (His Majesty's Revenue and Customs), a UK government agency, where I was part of their effort to raise an in-house programming capability, focusing on their online VAT payment website. Technologies involved included: - Java EE (Enterprise Edition) - Apache Tomcat server - Servlets and JSP I would like to find small to medium sized companies to whom I can supply programming services either in the mobile app sphere, or involving general PHP/Javascript/MySQL jobs. I am enthusiastic and determined to deliver agreed outcomes for my clients and I take personal pride and satisfaction in getting work done on time or earlier. As I live in Thailand where the cost of living is relatively low, my rates are super competitive! - $25/hr $25 hourly
Mohsin B.
- 4.9
- (81 jobs)
Indore, MADHYA PRADESHJavaScript
WooCommerceSearch Engine OptimizationElementorDiviWeb DesignPHPWeb DevelopmentPage Speed OptimizationAdobe PhotoshopWordPressCSSHTML5Landing Pageđ Top Rated Plus on Upwork | â 5 Star Feedback đĽ 11+ YEARS EXPERIENCE in Web Development | E-Commerce Website | Web Design | Wordpress website | Re-Design | Speed Optimization | Bug Fixes | Always available for ad-hoc tasks | Direct Message to start new project =============== Provide Services: =============== â Fully Functional WordPress theme development with eCommerce Support â Custom WordPress Plugin Development â PSD to WordPress â Pixel Perfect WordPress Website using page Builder â Elementor Builder â Divi Builder â Visual Composer â Beaver Builder â Fusion Builder â WordPress Theme Customization any kind of theme â Woo-commerce for eCommerce website â WooCommerce Subscriptions â WooCommerce Memberships â WP REST API â WooCommerce REST API â BuddyPress/BuddyBoss âAdvanced Custom Fields (ACF) â Payment Integration, Cart process, Custom product design functionality â Have Excellent knowledge about product features and attribute â PSD to HTML with Bootstrap â Any Kind of WordPress problem â 100% responsive Website â Any kind of JQuery, JavaScript Problem ------------------------------------------------------------------------------------------------------- The website speed makes the first impression about your business. Itâs essential to understand that you wonât get a second chance when it comes to user experience. Low website speed is one of the most frustrating things that will turn people off from your resource. High-performance websites result in high return visits, low bounce rates, higher conversions, engagement, higher ranks in organic search, and better user experience. Slow websites will cost you money and damage your reputation. By reducing the page load time you will positively impact marketing and sales processes. Youâll get higher traffic and attract more qualified leads that can be converted into customers. ⨠Importance of website speed optimization ⨠Page load time is a web performance metric that shows the time needed for a page to show on the user screen. Please check below the steps that I usually follow for optimization. â Specify image dimensions â Enable gzip compression â Leverage browser caching â Minify CSS â Optimize images â Specify a Vary: Accept-Encoding header â Avoid a character set in the meta tag â Minify JavaScript â Specify a cache validator â Combine images using CSS sprites â Avoid CSS @import â Specify a character set early â Avoid landing page redirects â Minimize redirects â Minify HTML â Avoid bad requests â Enable Keep-Alive â Inline small CSS â Inline small JavaScript â Minimize request size â Optimize the order of styles and scripts â Put CSS in the document head â Remove query strings from static resources â Serve resources from a consistent URL â Serve scaled images These were a few of the services I offer, please do not hesitate to ask any questions about improving your website speed. Feel free to contact me with your project details and any questions. I will be happy to answer your questions and discuss the details of your project. If you have a tight budget we can discuss it privately, my rate is always negotiable and I will not leave you until youâre satisfied with my work. So let's dive into an interview to find out more about me. Keywords: WordPress Developer | WordPress Expert | Elementor Expert | Elementor Pro Expert | Divi Expert | Web Design | WPBakery JS Composer Expert | WordPress e-Commerce | WordPress Migration | WordPress Installation | WordPress Customization | WordPress Website | WordPress Multisite | WordPress Security | WordPress Theme | WordPress Optimization | PSD to WordPress | WordPress SEO Plugins | WordPress Plugin | WordPress Landing Page | WordPress Development | WordPress Backup | WordPress Bug Fix | WordPress Consultation | WordPress Thrive Theme | Website Designer | Frontend Developer | Figma to WordPress | Figma to HTML/CSS | WordPress Installation | up-gradation and customization | WordPress theme integration | Extension creation and customization | Payment gateway integration | Server deployment | Templates, and Extensions | Responsive Website Design, and customization, Extension Installation - $35/hr $35 hourly
Juan Sebastian F.
- 5.0
- (0 jobs)
Bogota, DCJavaScript
Cloud ServicesMicroserviceAPI IntegrationASP.NET Web APIASP.NET CoreCSSHTMLTailwind CSSTypeScriptNode.jsAngularASP.NETReactA passionate Angular engineer with 8+ years of experience building user-focused, scalable, and maintainable web applications using Angular and TypeScript. He also has gained invaluable experience working with startups, including developing, launching, and maintainging projects from scratch. .Additionally, he excels in leading and mentoring team developers, managing product lifecycle, and building both front-end and back-end components. Remarkable Angular Expertise -Component-Based Architecture and Two-Way Data Binding -Structural/Attribute Directives -TypeScript -Angular CLI -RxJS and NgRx -Built-in router module for navigation -Reactive Forms -Unit/End-to-End testing for QA -Backend APIs and third-party APIs -Bootstrap, Tailwind CSS, SCSS -Version Control: Github, Gitlab, Bitbucket -DevOps: Docker, Podman && AWS, Azure, Google Cloud, Vercel, Netlify -Project Management: Jira, Trello I have a keen eye for design and user experience, which I integrate into my development process to create engaging applications. My collaborative approach allows me to work seamlessly with cross-functional teams, ensuring that projects are completed on time and to specifications. Driven by a passion for innovation, I continuously seek to expand my skills and stay updated with the latest industry trends. - $90/hr $90 hourly
Stephanie D.
- 4.9
- (6 jobs)
Palmertown, CTJavaScript
Database ModelingDatabase TestingQuickBooks Online APIDatabase ManagementIntuit QuickBooksQuickBaseDatabase DesignPHPSQLI work full-time as an Operations Manager to make processes more efficient. I've helped eliminate countless spreadsheets, merged data from multiple systems into a structure I helped design & build, written custom report pages, set up automatically triggered notifications, scheduled report deliveries, and much more. I want to empower your business not only to save time & money by automating manual processes, but also to make more informed decisions by providing clear, concise reporting. I love what I do. It's very rewarding to be able to say "Yes, of course we can make that better!" and also be able to deliver on that promise quickly. Using a low-maintenance database platform called Quick Base, I'm able to do this in a matter of weeks rather than months. Additionally, I would be more than happy to train a member of your staff on how to maintain & make updates to the database--no programming knowledge required, just a computer savvy employee will do the trick! Please read our company's case study/success story with Quick Base if you're interested. I will place a link in the portfolio section. Thanks for reading, hope to speak with you soon! - $50/hr $50 hourly
Robert H.
- 5.0
- (22 jobs)
Ocklawaha, FLJavaScript
jQueryMicrosoft OfficeResponsive DesignCSS 3HTML5WordPressSQLJoomlaPHPI have a love of Web Development and IT in general that I bring to all my work. I am meticulous and am always learning more about my field to both stay current and to expand on my skills. I have about 15 years of experience working in this field plus a couple more years setting up websites and doing programming while I was learning, I have created and maintained hundreds of websites. I have a real love of IT and Web Development. I find the whole field endlessly fascinating. I have a problem-solving attitude so bring on your problems and I will get them fixed. As a Mensa member I am able to add on new needed skills and knowledge very quickly. ⢠Excellent problem-solving skills ⢠Specializing in WordPress ⢠Proficiency with Systems Administration and Tech Support work ⢠Expertise creating and maintaining hundreds of websites ⢠Active Directory and Windows Server experience ⢠Experienced at troubleshooting websites and fixing hacked sites ⢠Proficient in WordPress, Joomla and coded sites ⢠Familiarity with Adobe Products (Web Premium CSS5) ⢠Skills with Microsoft Office Products If something is wrong with your WordPress site I can probably fix it for you. I will also give recommendations for improvements for any site I work on. Forms, PHP, JavaScript, CSS or HTML just let me know what you need. If something is broke, hacked or you just want a change or something added let me know. Everything from a brand new site to fixing a hack to a Site Maintenance Contract. I can present my resume, portfolio and references on request CERTIFICATIONS ⢠W3Schools certifications in HTML (with Excellence), CSS (with Excellence), JavaScript (with Excellence), jQuery (94%) and PHP (90% and includes SQL). With Excellence awarded for test scores of 95% or better. ⢠HIPAA certifications in HIPAA Security and HIPAA Awareness for Healthcare Providers from HIPPATraining.org. Valid from Jan. 2019 through Jan. 2021. - $60/hr $60 hourly
Pero M.
- 5.0
- (10 jobs)
Bitola, BITOLAJavaScript
AirtableApache KafkaXMLAPI IntegrationJSONApache MavenSpring IntegrationSalesforceSnapLogicSpring BootAPICSSSQLJavaSpecialized Java and certified SnapLogic developer, practicing java for more than 4 years and Data Integration (SnapLogic) almost 3 years. You can see/verify my certification in certification section bellow. Also for my self I could say that I'm Salesforce enthusiast, every spare free time I used for learning Salesforce platform. Highly motivated and hardworking, willing to learn new skills also eager to absorb as much knowledge and insight as possible ability to maintain high level of confidentiality. I have good work ethic, capable to work with a team, always on time(fulfill deadlines). - $50/hr $50 hourly
Christian R.
- 5.0
- (3 jobs)
Tysons, VAJavaScript
ReactLLM Prompt EngineeringPythonTypeScriptIonic FrameworkHTMLCSSASP.NET.NET FrameworkAngular 6ASP.NET MVCSQLApache CordovaC#Hi, I'm Christian! It is very nice to meet you. I am a Creative Software Architect based in Virginia. I have over 15+ years of Excellence: Journeying from a Junior Software Engineer to a Senior Software Architect. I've mastered a myriad of technical skills, leading large-scale projects and pushing the boundaries in software design. With over 15 years of experience, I've cultivated a unique skill set in system (software), project and UI/UX design. Specializing in sophisticated software architecture, my expertise is a beacon for Fortune 500 companies (i.e. Werner Enterprise, DELL, Microsoft, etc.) and innovative startups seeking groundbreaking solutions. At the forefront of digital transformation, I've led initiatives like QuickDocta, a transformative health platform, showcasing my ability to elevate your projects with visionary design, and strategic prowess. Let's team up to bring unparalleled architectural acumen to your most ambitious tech endeavors. - $56/hr $56 hourly
Yan O.
- 5.0
- (6 jobs)
Kiev, KYIV CITYJavaScript
FlutterUnityECMAScript 6API DevelopmentAPI IntegrationDockerGolangCSS 3HTML5MongoDBReactNode.jsjQueryC#Hello World! My name is Yan and I am React.js/Node.js developer. I consider my self rather experienced both with front-end and back-end. I really like to know how and why everything works (or not..). The list of skills may look like: HTML, CSS, JAVASCRIPT, C#, XML, XSL, REACT.JS, NODE.JS, FLUTTER, ADOBE PHOTOSHOP, BLENDER, GIMP, INKSCAPE, UNITY3D. Opened for any reasonable project and ready to invoke all my skills for the best results - $90/hr $90 hourly
Stefano M.
- 5.0
- (2 jobs)
Verona, VRJavaScript
Ruby on RailsVue.jsExpressJSReactNode.jsShopifyRubyGolangAPISpreeReact NativePythonFlutterTechnical Project ManagementNice to meet you! I am a CTO as a Service and entrepreneur from Italy. I started my development career in 2006 and since then I've worked with many interesting technologies, such Node, Ruby, Python and Go. As a CTO as a service, I can help your Company in a wide range of manners: - Early project stage: Helping the project owner with a strategy Defining the product roadmap (short and long term) Team hiring and training Data analysis Database design Defining application architecture Designing infrastructure architecture Choosing the right programming language and technical stack Building a PoC project Project setup and startup - During development: Team management (or your offshore team) Tasks estimation Tasks prioritization Applying agile practices Code quality review Quality assurance and testing processes Choosing a scaling strategy Choosing when and how to refactor the code Minimizing the technical debt - Project release: Assuring the quality of the final product Writing technical documentation Short and long term maintenance strategy Planning the quality assurance and testing processes Choosing a scaling strategy Defining the optimization strategy Choosing when and how to refactor the code During last 15+ years, I built every kind of web application, from monoliths to micro services to IoT related boards to every kind of client's ideas. I have dealt with: - platforms that optimize working flows - ecommerce (Spree) - quoting applications - employees evaluation and training - IoT dashboards - booking engines - mobile applications - business intelligence dashboards - ticketing systems - digital platforms for link building and digital pr - elearning tools - digital payments Currently, I'm helping clients all over the world to startup their challenging projects. Why trusting me? Because I'm a developer first, a highly skilled backend CTO and an entrepreneur. Hire me for your next big project. Stefano Mancini - $48/hr $48 hourly
Yoel D.
- 4.7
- (16 jobs)
Miami, FLJavaScript
ReactVue.jsECMAScriptReduxTypeScriptLaravelCryptocurrencyReact NativeAngular 6Bring me your problems! I have the solutions to A-Z problems. I am not limited to a single stack, as my development career has needed me to be a jack-of-all-trades, being engaged in several cutting-edge technologies. Here's what I worked on and I am working with: - Client-Side Programming: o Frameworks: Angular o UI Frameworks: BootStrap o HTML5, CSS3, jQuery, JavaScript, TypeScript, EcmaScript - Server-Side Programming: o Node.js: Express o PHP: Laravel o C#: ASP.NET, ASP.NET MVC, .NETCORE, .NET WebApi - CMS o Wordpress - Mobile Programming: o C/C++/C# - Database o Relational: MySQL, SQLServer, Oracle PLSql - Server: o Apache o Nginx - Architectures: o MVW (MVC, MVVM) - Version Control: o Github, Accurev I know what your project means to you and to your business. I would be willing to offer you a help with my experience as a web and mobile developer on different enterprise level applications. I am well-versed in all phases of the software development life cycle, including source control, and code review. I used to be a hard(smart) worker, a collaborative team player and a multi-tasker, being responsible and capable of prioritizing and executing tasks in a high-pressure environment, which has made me successful on my career. Good communications skill, of course, is the most important one in me, as I used to work in a scrum/agile development environment for most of my projects. I am responsible and capable of to prioritize and execute tasks in a high-pressure environment. Wouldn't it be worthwhile to have me for your real life projects? - $45/hr $45 hourly
Aidan H.
- 5.0
- (26 jobs)
Portland, ORJavaScript
SassReactHTML5CSS 3Responsive DesignjQueryAngular 4Adobe PhotoshopAdobe IllustratorI've been working professionally for over 5 years as a developer. Although I began specializing in coding pixel perfect front ends from designs, I have expanded into a full stack developer over the last few years: helping to build out complex web and mobile apps--from a decentralized marketplace, to a news aggregator mobile site, a telehealth app, and more. I've helped build API's, design and implement databases, create data architecture, deploy and connect complex decentralized web systems, and more. I specialize in Node and React, however I have also built and modified PHP, Python, Ruby on Rails, Angular, and Sass. I enjoy challenging work and delivering a great product on time. I prefer working remotely, but if a client is near I have no problem working in person. - $35/hr $35 hourly
Sarwaich R.
- 5.0
- (8 jobs)
Tucson, AZJavaScript
Software Architecture & DesignPythonHTMLTypeScriptC++Software DesignWeb DesignAPINode.jsWeb Development.NET FrameworkReactC#JavaAs an experienced Full Stack Developer with over 6 years in the field, I bring a wealth of expertise in Node.js, .NET Core, and ReactJS. With a solid foundation in both front-end and back-end technologies, including Full-Stack Development, I excel in creating scalable web applications and APIs. My proficiency spans a range of technologies, from C#, JavaScript, TypeScript, Python, and C++, to robust Web Development frameworks and libraries such as React (with Hooks and Redux), Angular Ts, and Vue Js. Skilled in Agile methodologies, I focus on developing scalable microservices and innovative front-end features, ensuring a seamless user experience that leverages the best of Web Design and Software Design principles. My commitment to quality is evident in my attention to detail in Software Architecture & Design, as well as in meticulous Software Testing. In the realm of database engineering, I am adept in Database Architecture and Database Design, with hands-on experience in SQL-Server, NoSQL, PostgreSQL, Firebase, and MongoDB. My expertise extends to crafting responsive and intuitive Mobile App Development and Desktop Applications, utilizing technologies like .NET Framework, React Native, Ionic, and Cordova for both Android and Hybrid App Development. Additionally, I am proficient in AI Development, including Speech-to-Text Conversion, Text-to-Speech Synthesis, and fine-tuning AI Models for enhanced performance and accuracy. My toolkit is complemented by knowledge in CSS, HTML, WordPress, Figma, and RESTful API integration, enabling me to deliver comprehensive solutions across platforms. Whether you're in the startup phase or scaling up as a large enterprise, my focus is on delivering top-tier software development services that align with your business needs, ensuring quality, efficiency, and client satisfaction. My expertise in Microsoft Windows environments, cloud platforms such as AWS and GCP, and modern development tools, positions me to handle a variety of challenges, driving your success through technological innovation. - $60/hr $60 hourly
Lu R.
- 4.9
- (38 jobs)
Daly City, CAJavaScript
ShopifyTypeScriptAI ChatbotOpenAI Inc.HTMLReactWeb DevelopmentSearch Engine OptimizationElementorNext.jsTailwind CSSWebsiteCSSWordPressHi, I'm Luna (she/her & they/them). Iâm a full-stack developer and designer with a passion for building fast, scalable websites and cutting-edge AI-powered products. From creating sleek portfolios to developing custom e-commerce sites, I bring your ideas to life using React, Next.js, Tailwind and Shopify. Iâve built AI-driven products like Grubby.ai, chatbots, and GPT wrappers to automate workflows and elevate user experiences. In addition to development, I offer design services using Figma and Photoshop, ensuring your digital presence is both functional and visually compelling. Letâs chat about how we can create something extraordinary together! Tech Stack: React | Next.js | JavaScript | TypeScript | Tailwind CSS | Node.js | Shopify | WordPress Design: Figma | Photoshop AI & Automation: GPT-4 | OpenAI | Chatbots | Custom AI integrations - $65/hr $65 hourly
Izhar O.
- 5.0
- (15 jobs)
Fridley, MNJavaScript
DiviPage Speed OptimizationWebsite OptimizationCSSPHPReactWordPressBug FixGraphic DesignYoast SEOAdobe XDLanding PageUX & UIFigmaFull-stack developer with expertise in WordPress development and UX/UI design, I'm here to offer you top-quality services that will bring your vision to life. With over 7 years of experience in web development, design, and digital marketing, I have a proven track record of delivering high-quality projects that are both functional and visually stunning. My experience in full-stack development enables me to take a comprehensive approach to all of my projects, ensuring that every aspect of your website or platform is perfectly integrated and optimized for maximum functionality and user experience. I am well-versed in all aspects of the project life cycle, from design to implementation to integration, and I am comfortable working in both team and individual settings. Whether you're looking for a custom-built website or an e-commerce platform, I have the skills and expertise to bring your vision to life. I am comfortable working on both the front end and back end of every project. I have worked with a wide range of clients, from large B2B corporations to local small businesses, and I'm always up for a new challenge. I am proficient in a wide range of frameworks, software, and programs. View my website: izharosman.com Here are some of the skills I specialize in: - CMS: WordPress, WooCommerce, Squarespace, Shopify, Pixiset, and Wix - Languages: CSS, HTML, JavaScript, PHP, React, Flutter, React Native, SQL, Laravel, Firebase, SupaBase - Graphic Design: Adobe Photoshop, Illustrator, Adobe XD, InDesign, Figma, Affinity - WordPress Builders: Divi, Elementor, Gutenberg, Goodlayers, Cornerstone, Avada, Beaver Builder, WP Bakery, Visual Composer, Themify - Website Integrations: User access only, memberships, age verification, payment gateways, online course platforms - Website Site Speed Optimization to under 3 seconds and a Pagespeed score above 90 - Responsive design across all platforms and devices - Marketing: Facebook pixel, Facebook ads, Instagram ads, Google ads, Google Analytics, SEO - Email Marketing: Mailchimp, HTML/CSS templates I am confident in my ability to handle any web development or design project, regardless of scope, and my commitment to quality, attention to detail, and dedication to exceeding expectations is what sets me apart. Let's work together to bring your project to the next level! - $48/hr $48 hourly
Toru I.
- 5.0
- (66 jobs)
Brooklyn, NYJavaScript
SquarespaceShopifyPSD to HTMLWebsiteResponsive DesignCSSHTML5WordPressjQueryHTMLCSS 3Hi, I'm Toru, a Japanese Front-end Web Developer who works in Tokyo and New York. I have over 10 years of experience in building websites using HTML, CSS, Javascript, and Bootstrap. I have also completed projects on platforms like Squarespace, WordPress, and Shopify. I can use the following web languages. Web Languages: - HTML - HTML5 - XHTML - Bootstrap - CSS - CSS3 - JavaScript - jQuery I also help make or update your Squarespace and WordPress sites too. CMS Skills: Squarespace WordPress Shopify Other Skills: DNS Setting Web Hosting Responsive Web Development PSD(Photoshop) to HTML Cross-Browser Development Browser Developer Tools Moving to Squarespace from WordPress Please feel free to contact me :) - $40/hr $40 hourly
Lee H.
- 4.6
- (8 jobs)
Payson, AZJavaScript
Audio EngineeringDigital Audio RecorderAudio ProductionAngularASP.NETMicrosoft Visual C++HTMLC++C#Iâve spent most of my career developing Windows applications using C++ and, later, C#. During that time itâs been necessary to attain a working knowledge of many other technologies, including ASP.NET, WPF, Active Directory, MFC, SQL Server, DirectShow, COM, HTML, Javascript, Git. I have been making a living writing code for 35 years. Want to browse more talent?
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