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Mobile Application Developer Jobs in O Fallon, IL

Matrix Systems Group

***.NET DEVELOPERS***

Saint Louis, MO

$47 - $62/hr

NET DEVELOPER - we are recruiting for future openings at client companies/agencies. This job might ... mobile-friendly application by clicking on "I'm Interested." It only takes 1-2 minutes! When you ...

Matrix Systems Group

***.NET DEVELOPERS***

Saint Louis, MO · On-site

$47 - $62/hr

NET DEVELOPER - we are recruiting for future openings at client companies/agencies. This job might ... mobile-friendly application by clicking on "I'm Interested." It only takes 1-2 minutes! When you ...

LaunchCode

Power Platform Developer

Saint Louis, MO · On-site

$40 - $50/hr

Mobile, AL; or Nashville, TN (2 days/week onsite) Job Type: 1 year contract-to-hire Company: The ... Application lifecycle management: Package and deploy Power Platform solutions across development ...

Nidec Corporation

Software Engineer I

Saint Louis, MO · On-site

Louis, MO . The Software Engineer I supports Desktop application development, database interaction, Microprocessor Embedded code, and internal equipment development. Work within a team, from ...

Deloitte

Adobe Experience Platform

Saint Louis, MO · On-site

... application programming interfaces (APIs), and cloud data platforms to support audience activation ... Mobile SDK, datastreams, Edge Network, event forwarding, and instrumentation design * 2+ years ...

Asynchrony Labs

Delivery Engineer

Saint Louis, MO · On-site

... in application development, mobile computing, systems and sensor integration, enterprise ... In addition to technical skills you will also be relied on to coach teams through their Agile/DevOp ...

Asynchrony Labs

Delivery Engineer

Saint Louis, MO · On-site

... in application development, mobile computing, systems and sensor integration, enterprise ... In addition to technical skills you will also be relied on to coach teams through their Agile/DevOp ...

VDart Inc

IT Service Management (ITSM)

Saint Louis, MO

$52.50 - $72.25/hr

... Planning (Oracle/SAP), SMAC (Social, Mobile, Cloud, Analytics), Business Intelligence ... Remedy Developer Studio to customize forms, fields, overlay, workflows and related system ...

VDart Inc

IT Service Management (ITSM)

Saint Louis, MO · On-site

$52.50 - $72.25/hr

... Planning (Oracle/SAP), SMAC (Social, Mobile, Cloud, Analytics), Business Intelligence ... Remedy Developer Studio to customize forms, fields, overlay, workflows and related system ...

Meridian Systematics

Software Developer

Saint Louis, MO · On-site

$90K - $110K/yr

Software Developer - Enterprise Geospatial Solutions Location: On-Site About the Role Join our ... robust application monitoring, and strictly adhere to security standards. * Data & Systems ...

Meridian Systematics

Software Developer

Saint Louis, MO · On-site

$90K - $110K/yr

Software Developer - Enterprise Geospatial Solutions Location: On-Site About the Role Join our ... robust application monitoring, and strictly adhere to security standards. * Data & Systems ...

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Showing results 41-60

All JobsMobile Application Developer JobsMobile Application Developer Jobs in O Fallon, IL

Mobile Application Developer information

See O Fallon, IL salary details

$49.9K

$103.1K

$147.4K

How much do mobile application developer jobs pay per year?

As of Sep 9, 2026, the average yearly pay for mobile application developer in O Fallon, IL is $103,058.00, according to ZipRecruiter salary data. Most workers in this role earn between $77,900.00 and $118,900.00 per year, depending on experience, location, and employer.

What is a mobile application developer?

A mobile application developer designs programs and apps for use on smartphones, tablets, and other mobile devices. These skilled computer professionals develop solutions on popular mobile platforms, such as iOS and Android, as their main job duty. Your software is typically made available through the Apple Store and the Google Play Store. Apps downloaded to the mobile devices are designed to perform various functions, allow for game play and entertainment, or assist with life goals. You need experience with a variety of programming languages and development platforms for this job.

What are some common challenges mobile application developers face when working on cross-platform apps?

Mobile Application Developers often encounter challenges related to ensuring consistent functionality and user experience across different devices and operating systems when building cross-platform apps. These challenges can include dealing with varying screen sizes, managing performance optimization, and integrating native device features. Collaboration with UI/UX designers and QA testers is essential to address compatibility issues, and staying updated with the latest frameworks and tools helps developers deliver reliable, high-quality applications.

What are the key skills and qualifications needed to thrive as a mobile application developer, and why are they important?

To thrive as a Mobile Application Developer, you need strong programming skills in languages such as Java, Kotlin, Swift, or Dart, along with a solid understanding of mobile UI/UX principles and a degree in computer science or a related field. Familiarity with development tools like Android Studio, Xcode, cross-platform frameworks (e.g., Flutter, React Native), and version control systems such as Git is typically required. Creative problem-solving, collaboration, and effective communication are standout soft skills in this role. These skills ensure the creation of reliable, user-friendly apps and facilitate efficient teamwork in a rapidly evolving mobile technology landscape.

What is the difference between Mobile Application Developer vs Web Developer?

AspectMobile Application DeveloperWeb Developer
CredentialsTypically requires programming skills in Swift, Java, or Kotlin; often has certifications in mobile app developmentRequires skills in HTML, CSS, JavaScript; may have certifications in web development or related technologies
Work EnvironmentDevelops apps for iOS and Android platforms, often working in IDEs like Xcode or Android StudioBuilds websites and web applications, working with browsers and server environments
Employer & IndustryTech companies, startups, app development agenciesBusinesses, digital agencies, e-commerce platforms
Search & Comparison IntentOften compared for career paths, skills, and job roles in mobile vs web development

Mobile Application Developers focus on creating apps for mobile devices using platform-specific languages and tools, while Web Developers build websites and web applications accessible via browsers. Both roles require programming skills but differ in platforms, tools, and deployment environments.

Is a mobile application developer a good career?

A mobile application developer is a viable career choice with strong demand due to the widespread use of smartphones and mobile apps. The role typically requires skills in programming languages like Java or Swift, and opportunities exist across various industries, offering competitive salaries and growth potential.
More about Mobile Application Developer jobs

What cities near O Fallon, IL are hiring for Mobile Application Developer jobs?

Cities near O Fallon, IL with the most Mobile Application Developer job openings:

Mobile Application Developer jobs near you
Infographic showing various Mobile Application Developer job openings in O Fallon, IL as of August 2026, with employment types broken down into 62% Full Time, and 38% Contract. Highlights an 89% In-person, and 11% Hybrid job distribution, with an average salary of $103,058 per year, or $49.5 per hour.

***2 SOFTWARE DEVELOPERS - EDUCATION***

Saint Louis, MO

Matrix Systems Group
See more jobs at Matrix Systems Groupexternal

Full-time

Re-posted 12 days ago

Job description

Company Description

Matrix Systems Group is an Information Technology and Services company that places talented professionals in long-term consulting roles in a variety of industries. Some of the titles we look for include Developers, Project Managers, Business Analysts and Network Administrators. We occasionally have permanent positions on our team as well.

Why Work for Matrix Systems Group?

 - We typically place our people in long-term contracts - 1-2 years some with options for renewal

 - You choose the type of employment you prefer - direct (W2) or contractor (1099) (note that this may depend on the specific contract being filled)

 - No micromanagement!!

Job Description

SOFTWARE DEVELOPER - The selected candidate will develop and maintain existing and future data systems pertaining to Special Education. Possible projects include a re-write of the Special Education Database System, assisting with the I-STAR development program and other projects. This work will enable policymakers, educators and others to access information related to Special Education more easily and ultimately will improve learner outcomes. This assignment is expected begin in December - January and last for 2-3 years.

This job might be for you if:

  • You have at least 3 years of experience with each of the following: ASP.NET, VB.NET and SQL Server
  • You have at least 1 year of experience with each of the following: Javascript, and either Crystal Reports or SSRS
  • You have experience as a front-end developer supporting a large application with a diverse user base
  • You have experience with educational data systems (preferred but not required


You can complete our quick and mobile-friendly application process by clicking on "I'm Interested." When you apply please make sure that your current / correct contact information is on your resume so we can reach you. If this opportunity is not what you are looking for at this time, please feel free to refer someone you know.

We appreciate your interest in Matrix Systems Group!


Qualifications

When you apply, please include information on the following:

1) Will you be available to work M-F in Springfield IL and when will you become available?

2) Are you working on a Corp2Corp arrangement? If so please provide contact information for your employer.  We may be able to do a subcontractor arrangement for the right candidate.

3) You approximate salary requirements for working in Springfield, IL.  Or if doing C2C let me know if I need to discuss with your employer.


Also let me know if you have any questions. Thank you!

Apply