Find the Best Web Application Development Jobs

Professionals on Upwork rate clients
Rating is 4.9 out of 5.
4.9/5
On average from 2M+ reviews

Check out a sample of the 2,184 Web Application Development jobs posted on Upwork

Full-Stack Developer for Luxury Marketplace

New
Hourly ‐ Posted 13 hours ago
Hours to be determined
Hours needed
1 to 3 months
Duration
Expert
Experience level

Hi! I’m building a premium fragrance platform called SCENT ARCHIVE, and I’m looking for an experienced full-stack developer or small t…

Web Application DevelopmentHTML5PHPJavaScript
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Hotel finder web app

New
Fixed-price ‐ Posted 12 hours ago
$70
Fixed-price
Expert
Experience level

I need a 2-page web app where users search for hotels and see them on a Mapbox map. Features · Search bar (location/name) · Left: ho…

Web Application DevelopmentNext.js
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Rebuild SaaS Platform from No-Code to Traditional Code

New
Fixed-price ‐ Posted 10 hours ago
$5,000
Fixed-price
Intermediate
Experience level

We are seeking an experienced freelancer to rebuild our SaaS platform, currently in production, from a no-code setup to a traditional c…

Web Application DevelopmentPHPJavaScriptHTML5
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React/Supabase Developer Needed for SAAS Web Application

New
Fixed-price ‐ Posted 10 hours ago
$100
Fixed-price
Expert
Experience level

We are looking for an experienced Full-Stack Developer to continue building out CrewUp, a web application marketplace platform for gene…

Web Application DevelopmentAPINode.jsHTML5HTMLCSSJavaScript
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Website Developer Needed

New
Hourly ‐ Posted 10 hours ago
Less than 30 hrs/week
Hours needed
1 to 3 months
Duration
Intermediate
Experience level

I am a developer seeking a skilled website developer to assist with a project. The ideal candidate will have experience in web developm…

Web Application DevelopmentPHP
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Platform Development for Income Generation

New
Hourly ‐ Posted 12 hours ago
Less than 30 hrs/week
Hours needed
1 to 3 months
Duration
Intermediate
Experience level

We are seeking a skilled freelancer to help build a strong platform that can generate income. The ideal candidate will have experience…

Web Application DevelopmentSalesMobile App DevelopmentiOS Development
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Platform Engineer for Healthcare Platform

New
Hourly ‐ Posted 10 hours ago
30+ hrs/week
Hours needed
1 to 3 months
Duration
Intermediate
Experience level

The Role We're looking for a versatile Platform Engineer who's comfortable moving across the stack: backend services, web apps, mobile,…

Web Application DevelopmentPythonAPIDatabase ArchitectureJavaScriptAmazon Web ServicesSoftware TestingNext.jsTypeScript
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Business Website Development

New
Fixed-price ‐ Posted 10 hours ago
$100
Fixed-price
Intermediate
Experience level

We are seeking a skilled web developer to create a professional website that effectively attracts and engages potential clients for our…

Web Application DevelopmentSearch Engine Optimization
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$200
Fixed-price
Expert
Experience level

We are looking for a senior AI-driven full-stack developer/product engineer for ongoing digital platforms and business systems. God UI…

Web Application DevelopmentAPI IntegrationPHPReact Native
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Modernize Existing Website

New
Hourly ‐ Posted 10 hours ago
Less than 30 hrs/week
Hours needed
1 to 3 months
Duration
Intermediate
Experience level

I am seeking an experienced web designer/developer to refresh and modernize my existing website. The current site contains valuable con…

Web Application DevelopmentHTML
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Web Application Developers on Upwork
can earn $20–$30/hr.
Learn more below about how you can earn a career on the world’s work marketplace.
Web Application Developer average prices bell curve

$20$30

Median hourly rates (USD)

How To Become a Web Application Developer

Do you have a passion for creating exciting new web applications? Do you enjoy challenging yourself to build new tools from scratch and turn client ideas into reality? If so, you may have what it takes to become a freelance web application developer on Upwork.

What does a web application developer do?

A web application developer is someone who develops websites and web apps for desktop, tablet, and mobile devices. A web application developer uses a variety of programming languages such as HTML, CSS, and JavaScript, in addition to frameworks such as React and Vue, to create and support web applications. The developer may also use a plethora of third-party tools and services to create the application. It is part of a web developer's responsibility to ensure that the application is accessible to users around the world.

Web application developers may also be expected to handle the maintenance and hosting infrastructure of a web app. This will include configuring DNS options for connecting domain names and subdomains, setting up proper MX rules for email support, and performing maintenance work when necessary, such as updating plugins and other dependencies in software.

What skills do I need to become a web application developer?

A web application developer may work with many programming languages and frameworks. HTML, CSS, and JavaScript form the core programming languages that every web application developer should know, but these skills may be augmented with a variety of additional programming languages such as Python, C#, and PHP.

Web application developers must also be familiar with a variety of popular frameworks and software libraries relevant to their area of expertise. These will often include the use of Node.js and popular JavaScript frameworks such as React, Vue, and Express.js. Web application developers must be comfortable working with the command line in order to install and update project dependencies.

Web application developers may also be responsible for handling the front end of the app. This relates to the user interface and user experience, such as how the app looks and feels to the end user. Web developers may be tasked with integrating layouts provided by designers and making sure apps have a consistent end-user experience on different devices, from desktop computers to smartphones.

Common skills a web application developer should possess include:

  • Bachelor’s degree in computer science, computer engineering, or related field
  • Proficiency with required web development coding languages such as HTML5, CSS, Ruby, JavaScript, and Bootstrap
  • Strong understanding of asynchronous request handling, partial page updates, and Ajax 5.
  • Experience with at least one server-side language, such as PHP, Java, or .NET
  • Proficiency with relational databases, such as MySQL and SQL
  • Experience with using caching, routing, and queueing software
  • Ability to work well with management, front-end developers, back-end developers, and other programmers

What are the core web application developer job responsibilities?

A web application developer will be expected to build and create web applications from scratch as well as work on the maintenance of existing web apps. This may include the design and implementation of RESTful services in order to provide API endpoints to web app data or to integrate third-party data sources for consumption by internal APIs. Building from scratch will also involve the design and implementation of relational database schemas or NoSQL data stores for data storage purposes. Knowledge of popular third-party cloud-based storage and hosting services such as Amazon Web Services or Google Cloud is not necessary but may be useful.

Web application developers are required to gather and define project requirements from clients and convert these into a functioning web application. This will include defining the scope, creating the software architecture, writing and testing the software, and optimizing it for speed and performance. Web developers with experience and background knowledge should be able to understand when existing tools and services can be used to meet client requirements and when completely bespoke code is required, knowledge that helps save both time and money for the client.

Web application developers will often have to integrate third-party tools and services into existing applications. Common use cases involve integrating data analysis software or ad network services. This will involve becoming familiar with the provided tools and understanding how to integrate them into the web application.

Jump-start your freelance web application developer career on Upwork and start looking for your first job. Eager to learn more about web application developer jobs on Upwork? Check out these additional resources:

Upwork is not affiliated with and does not sponsor or endorse any of the tools or services discussed in this section. These tools and services are provided only as potential options, and each reader and company should take the time needed to adequately analyse and determine the tools or services that would best fit their specific needs and situation.

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