What is the average Web Applications Developer salary for O Fallon, MO?
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As of June 01, 2026, the average Web Applications Developer salary in O Fallon, MO is $112,302. The chart below represents localized salaries for some of our most popular Web Applications Developer job titles in O Fallon, MO. Salaries can vary greatly depending on numerous factors, including position, location, years of experience, and level of education. Salary.com’s team of Certified Compensation Professionals analyzed survey data collected from thousands of HR departments at companies of all sizes and industries to compile a range of salaries for various Web Applications Developer job titles in O Fallon, MO. Apply your personal criteria to one of the job titles below to get your personalized salary estimate.
Web Applications Developer Salaries in O Fallon, MO
| Job Title | Salary | Hourly Rate | Location | Date Updated |
| Web Applications Developer II | $91,571 | $44.02 | O Fallon, MO | June 01, 2026 |
| Web Applications Developer I | $72,067 | $34.65 | O Fallon, MO | June 01, 2026 |
| Web Applications Developer III | $111,537 | $53.62 | O Fallon, MO | June 01, 2026 |
| Web Applications Developer IV | $133,565 | $64.21 | O Fallon, MO | June 01, 2026 |
| Web Software Developer II | $96,124 | $46.21 | O Fallon, MO | June 01, 2026 |
| Mobile Applications Developer | $111,107 | $53.42 | O Fallon, MO | June 01, 2026 |
| Web Applications Development Manager | $143,039 | $68.77 | O Fallon, MO | June 01, 2026 |
| Intranet Applications Specialist, Sr. - Web | $131,473 | $63.21 | O Fallon, MO | June 01, 2026 |
| Intranet Applications Specialist - Web | $93,782 | $45.09 | O Fallon, MO | June 01, 2026 |
| Web Designer III | $102,718 | $49.38 | O Fallon, MO | June 01, 2026 |
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Designs, develops, and maintains internal and external websites for an organization. Uses knowledge of common web development languages (e.g., HTML, Java, PHP, JSP, ASP.Net, Python, AJAX) to build and expand site functionality. Creates and enhances the overall website appearance using graphic/multi-media design software and designs site navigation that is clear and easy to understand. Ensures sites remain scalable while complying with performance and security standards. Updates site content based on input from marketing and documents changes in source code. Typically requires a bachelor's degree in a related area. Typically reports to a manager. Occasionally directed in several aspects of the work. Gaining exposure to some of the complex tasks within the job function. Typically requires 2-4 years of related experience. Web Applications Developer II Salaries in O Fallon, MOAlternate Job Titles:Internet/Web Application Development - Intermediate, Web Applications Developer - Experienced, Web Applications Programmer II, Web Applications Developer II
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Designs, develops, and maintains internal and external websites for an organization. Uses knowledge of common web development languages (e.g., HTML, Java, PHP, JSP, ASP.Net, Python, AJAX) to build and expand site functionality. Creates and enhances the overall website appearance using graphic/multi-media design software and designs site navigation that is clear and easy to understand. Ensures sites remain scalable while complying with performance and security standards. Updates site content based on input from marketing and documents changes in source code. Typically requires a bachelor's degree in a related area. Typically reports to a manager. Work is closely managed. Works on projects/matters of limited complexity in a support role. Typically requires 0-2 years of related experience. Web Applications Developer I Salaries in O Fallon, MOAlternate Job Titles:Internet/Web Application Development - Entry, Web Applications Developer - Entry, Web Applications Programmer I, Web Applications Developer I
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Designs, develops, and maintains internal and external websites for an organization. Uses knowledge of common web development languages (e.g., HTML, Java, PHP, JSP, ASP.Net, Python, AJAX) to build and expand site functionality. Creates and enhances the overall website appearance using graphic/multi-media design software and designs site navigation that is clear and easy to understand. Ensures sites remain scalable while complying with performance and security standards. Updates site content based on input from marketing and documents changes in source code. Typically requires a bachelor's degree in a related area. Typically reports to a manager. Work is generally independent and collaborative in nature. Contributes to moderately complex aspects of a project. Typically requires 4-7 years of related experience. Web Applications Developer III Salaries in O Fallon, MOAlternate Job Titles:Internet/Web Application Development - Senior, Web Applications Developer - Senior, Web Applications Programmer III, Web Applications Developer IIICategory : IT - Computers, Software
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Designs, develops, and maintains internal and external websites for an organization. Uses knowledge of common web development languages (e.g., HTML, Java, PHP, JSP, ASP.Net, Python, AJAX) to build and expand site functionality. Creates and enhances the overall website appearance using graphic/multi-media design software and designs site navigation that is clear and easy to understand. Ensures sites remain scalable while complying with performance and security standards. Updates site content based on input from marketing and documents changes in source code. Typically requires a bachelor's degree in a related area. Typically reports to a manager. Work is highly independent. May assume a team lead role for the work group. A specialist on complex technical and business matters. Typically requires 7+ years of related experience. Web Applications Developer IV Salaries in O Fallon, MOAlternate Job Titles:Internet/Web Application Development - Team Lead, Web Applications Developer - Team Lead, Web Applications Programmer IV, Web Applications Developer IV
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Designs and develops web-accessible software solutions that engage users and meet business requirements. Collaborates with web administrators and designers through the full development lifecycle and contributes to the development of new features. Develops, implements, and debugs software code. Designs and develops the web infrastructure including back-end database development and the construction of SQL queries via CGI scripting. Requires knowledge of web technologies and tools such as CSS, JavaScript, HTML, PERL, PHP, Active Server Pages, SQL, and C++. Typically requires a bachelor's degree in area of specialty. Typically reports to a manager. Occasionally directed in several aspects of the work. Gaining exposure to some of the complex tasks within the job function. Typically requires 2-4 years of related experience. Web Software Developer II Salaries in O Fallon, MOAlternate Job Titles:Intermediate Web Software Programmer, Web Software Developer - Intermediate, Web Software Developer II
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Responsible for developing, testing, implementing, and maintaining mobile applications. Troubleshoots system problems and issues and looks for ways to improve the application. May require a bachelor's degree. Has knowledge of a variety of concepts, practices, and procedures within a particular field (i.e., iOS, Android etc.). Typically reports to a manager or head of a unit/department. Typically requires 2 to 4 years of related experience. Gains exposure to some of the complex tasks within the job function. Occasionally directed in several aspects of the work. Mobile Applications Developer Salaries in O Fallon, MOAlternate Job Titles:Mobile Software Developer - Experienced, Mobile Software Engineer, Mobile Applications Developer
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Manages the design, development, and maintenance of internal and external websites for an organization. Oversees web applications developers to ensure that websites are built and expanded based on evolving technology and business needs. Creates and implements standards for website appearance and navigation. Requires knowledge of common web development languages (e.g., HTML, Java, PHP, JSP, ASP.Net, Python, AJAX.) Requires a bachelor's degree. Typically reports to a director or head of a unit/department. Manages subordinate staff in the day-to-day performance of their jobs. True first level manager. Ensures that project/department milestones/goals are met and adhering to approved budgets. Has full authority for personnel actions. Typically requires 5 years experience in the related area as an individual contributor. 1 - 3 years supervisory experience may be required. Extensive knowledge of the function and department processes. Web Applications Development Manager Salaries in O Fallon, MO
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Develops, implements, and maintains web-based application systems for an organization. Troubleshoots issues with existing or developed systems, and works with the appropriate resources to resolve them. May require a bachelor's degree in a related area and at least 4 years of experience in the field or in a related area. Has knowledge of a variety of concepts, practices, and procedures within a particular field (i.e., HTML, Java, etc.). Relies on experience and judgment to plan and accomplish goals. Performs a variety of complicated tasks. May direct and lead the work of others. Typically reports to a manager or head of a unit/department. A wide degree of creativity and latitude is expected. Intranet Applications Specialist, Sr. - Web Salaries in O Fallon, MO
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Develops, implements, and maintains web-based application systems for an organization. Troubleshoots issues with existing or developed systems, and works with the appropriate resources to resolve them. May require a bachelor's degree and 2-4 years of experience in a related field (i.e., HTML, Java, etc.). Familiar with standard concepts, practices, and procedures within a particular field. Relies on limited experience and judgment to plan and accomplish goals. Performs a variety of tasks. Works under general supervision; typically reports to a supervisor or manager. A certain degree of creativity and latitude is required. Intranet Applications Specialist - Web Salaries in O Fallon, MO
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Designs web pages that engage the target audience, drive web traffic, and provide optimal user experience. Uses knowledge of user interface design and human factors engineering to create visually pleasing web pages with rich content and clear navigational schemes. Employs site animation and special effects to create a compelling user experience. Tests and improves site usability and performance on a variety of browsers. Requires knowledge of web technologies, techniques, and tools such as HTML, Shockwave, Photoshop, Illustrator, Adobe Flex, Adobe Flash, JavaScript, ASP pages, and SEO. May require a bachelor's degree in area of specialty. Typically reports to a manager. Work is generally independent and collaborative in nature. Contributes to moderately complex aspects of a project. Typically requires 4-7 years of related experience. Web Designer III Salaries in O Fallon, MOAlternate Job Titles:Designer III - Web, Web Graphics and Content Layout Designer III, Web Page Designer - Senior, Web Designer III