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Check out a sample of the 2,185 Web Application Developer jobs posted on Upwork

Mapbox or Google Maps App Developer
New
Fixed-price ‐ Posted 9 minutes ago

$7,000
Fixed Price

Expert
Experience Level

Looking for an experienced Mapbox or Google Maps developer for a 3 to 6 weeks project (desired completion date January 15th, 2023). Th…

Web Application Development Mapbox Google Maps API Map Integration Web Application Georeferencing
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Upload Source Code
New
Hourly ‐ Posted 1 hour ago

Less than 30 hrs/week
Hours needed

1 to 3 months
Duration

Intermediate
Experience Level

Admin panel to be at least be uploaded to the hosting the android is to be uploaded to at least the customer app today and the store…

Web Application Development Web Application Business with 1-9 Employees JobsBusiness with 10-99 Employees JobsFlutter Developer Jobs Android iOS JavaScript HTML
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Who can teach web development
New
Hourly ‐ Posted 1 hour ago

Less than 30 hrs/week
Hours needed

3 to 6 months
Duration

Expert
Experience Level

Hello, I'm looking for someone who can teach me web development. I'm not a beginner. I already have experience with the WordPress as CM…

Web Application Development Laravel Web Development WordPress JavaScript PHP HTML CSS Web Application React
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Less than 30 hrs/week
Hours needed

1 to 3 months
Duration

Intermediate
Experience Level

Hi, Our company is looking for an experienced full-stack developer. As part of our work, we have various projects to handle. It is es…

Web Application Development PHP Laravel HTML CSS MySQL Web Application
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Connecting directly to hikvision attendance machine
New
Fixed-price ‐ Posted 2 hours ago

$20
Fixed Price

Intermediate
Experience Level

I do have hikvision attendance machine . Machine is installed and I want to get records from the machine periodically . Your task is…

Web Application Development JavaScript API Python Java Node.js Web Application
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$89
Fixed Price

Intermediate
Experience Level

Hy i need Full Stack web developer with experience in HTML5 , CSS3 , JavaScript , Bootstrap , PHP , WordPress to complete exciting proj…

Web Application Development JavaScript CSS HTML5 Bootstrap HTML PHP Web Development WordPress Web Application Custom PHP
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SVG Editor
New
Hourly ‐ Posted 1 hour ago

Less than 30 hrs/week
Hours needed

1 to 3 months
Duration

Expert
Experience Level

Looking for an experienced developer to continue a project of a canvas based editor for SVG files. Some features are already created us…

Web Application Development Web Application Fabric.js JavaScript Web Development
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Angular developer
New
Hourly ‐ Posted 2 hours ago

Less than 30 hrs/week
Hours needed

3 to 6 months
Duration

Intermediate
Experience Level

Need to build UI on angular 14; API integration with Postgres DB. IIS as web server

Web Application Development Angular CSS HTML Web Application API API Integration
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Website Speed Enhancement fixing Core web vitals
New
Fixed-price ‐ Posted 2 hours ago

$200
Fixed Price

Intermediate
Experience Level

I have core web pages approx 8-10 which would like to enhance core web vitals to enhance page load speed. The project takes time to loa…

Web Application Development React Web Application API Integration PHP JavaScript MySQL CSS
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Property short term rental SAAS project
New
Fixed-price ‐ Posted 2 hours ago

$500
Fixed Price

Expert
Experience Level

Hi, I want to create a web app to control rent income and expenses. The idea is simple, bring the attached excel and make it a web app.…

Web Application Development Web Application Custom PHP MySQL Apache HTTP Server Business with 1-9 Employees Jobs PHP Web Design Jobs Web Development
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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 analyze and determine the tools or services that would best fit their specific needs and situation.

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