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Full Stack Developer Jobs in O Fallon, IL (NOW HIRING)

JAVA Full stack Developers

Bridgeton, MO · On-site

$48.50 - $62.75/hr

Company Description ERP Analysts Inc . an Oracle Platinum Partner specialized in Oracle product licensure, implementations, upgrades and production support for PeopleSoft, Fusion Applications, Fusion ...

JAVA Full stack Developers

Bridgeton, MO

$48.50 - $62.75/hr

Company Description ERP Analysts Inc . an Oracle Platinum Partner specialized in Oracle product licensure, implementations, upgrades and production support for PeopleSoft, Fusion Applications, Fusion ...

Mid-Level Software Engineer

Caseyville, IL · On-site

$87K - $157K/yr

As a Full Stack Engineer, you'll contribute across the entire software development lifecycle, from crafting intuitive user interfaces to building scalable backend services and integrating secure ...

New

Mid-Level Software Engineer

Hazelwood, MO · On-site

$87K - $157K/yr

As a Full Stack Engineer, you'll contribute across the entire software development lifecycle, from crafting intuitive user interfaces to building scalable backend services and integrating secure ...

New

Mid-Level Software Engineer

Glen Carbon, IL · On-site

$87K - $157K/yr

As a Full Stack Engineer, you'll contribute across the entire software development lifecycle, from crafting intuitive user interfaces to building scalable backend services and integrating secure ...

New

Mid-Level Software Engineer

Saint Ann, MO · On-site

$87K - $157K/yr

As a Full Stack Engineer, you'll contribute across the entire software development lifecycle, from crafting intuitive user interfaces to building scalable backend services and integrating secure ...

New

Mid-Level Software Engineer

Florissant, MO · On-site

$87K - $157K/yr

As a Full Stack Engineer, you'll contribute across the entire software development lifecycle, from crafting intuitive user interfaces to building scalable backend services and integrating secure ...

New

Mid-Level Software Engineer

Dupo, IL · On-site

$87K - $157K/yr

As a Full Stack Engineer, you'll contribute across the entire software development lifecycle, from crafting intuitive user interfaces to building scalable backend services and integrating secure ...

New

As a Full Stack Engineer, you'll contribute across the entire software development lifecycle, from crafting intuitive user interfaces to building scalable backend services and integrating secure ...

New

As a Full Stack Engineer, you'll contribute across the entire software development lifecycle, from crafting intuitive user interfaces to building scalable backend services and integrating secure ...

New

Mid-Level Software Engineer

Wood River, IL · On-site

$87K - $157K/yr

As a Full Stack Engineer, you'll contribute across the entire software development lifecycle, from crafting intuitive user interfaces to building scalable backend services and integrating secure ...

New

As a Full Stack Engineer, you'll contribute across the entire software development lifecycle, from crafting intuitive user interfaces to building scalable backend services and integrating secure ...

New

Mid-Level Software Engineer

Maryville, IL · On-site

$87K - $157K/yr

As a Full Stack Engineer, you'll contribute across the entire software development lifecycle, from crafting intuitive user interfaces to building scalable backend services and integrating secure ...

New

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Full Stack Developer information

See O Fallon, IL salary details

$22

$55

$80

How much do full stack developer jobs pay per hour?

As of Jul 14, 2026, the average hourly pay for full stack developer in O'Fallon, IL is $55.28, according to ZipRecruiter salary data. Most workers in this role earn between $45.96 and $63.70 per hour, depending on experience, location, and employer.

What is the difference between Full Stack Developer vs Front End Developer?

AspectFull Stack DeveloperFront End Developer
SkillsProficient in both front-end and back-end technologies, including HTML, CSS, JavaScript, server-side languages, and databases.Specializes in client-side technologies like HTML, CSS, JavaScript, and frameworks such as React or Angular.
Work EnvironmentWorks on both server and client-side development, often handling entire project stacks.Focuses primarily on designing and implementing user interfaces and user experience.
Common UsageUsed in full project development, especially in startups and small teams.Primarily involved in UI/UX design and front-end implementation in larger teams.

While both roles require strong web development skills, Full Stack Developers handle both front-end and back-end tasks, providing a comprehensive approach to web projects. Front End Developers focus solely on creating engaging and responsive user interfaces. Understanding these differences helps employers and developers choose the right role for their project needs.

What are some common challenges Full Stack Developers face when working on cross-functional teams?

Full Stack Developers often collaborate with designers, backend engineers, project managers, and QA testers, which can introduce challenges like aligning on project requirements and managing different technical perspectives. Coordinating between frontend and backend tasks while ensuring seamless integration is another common hurdle. Additionally, staying up-to-date with evolving technologies on both ends of the stack requires strong time management and continuous learning. Effective communication and adaptability are key to overcoming these challenges and delivering cohesive solutions.

What Does a Full Stack Developer Do?

As a full stack developer, your job is to work on the front-end and the back-end of a company's database, server, and application systems. Rather than specializing in one particular area, full stack developers typically focus on prototyping software that other employees expand on later. Knowledge of many different types of systems can reduce the time needed to develop software and highlight any significant challenges. In this role, you may be asked to gain proficiency in several coding languages, use third-party data libraries, and carefully manage your time to ensure all projects finish promptly. Most full stack developers work as part of a larger team.

What are the key skills and qualifications needed to thrive as a Full Stack Developer, and why are they important?

To thrive as a Full Stack Developer, you need expertise in both front-end and back-end programming languages (such as JavaScript, HTML/CSS, Python, or Java) and a solid understanding of web development principles, often supported by a relevant degree or coding bootcamp experience. Familiarity with frameworks like React or Angular, back-end environments like Node.js or Django, version control systems like Git, and possibly cloud platforms is typically required. Strong problem-solving, communication, and collaboration skills distinguish excellent developers, allowing them to work effectively in team environments and with stakeholders. These technical and soft skills are vital for building, maintaining, and optimizing complex, user-friendly web applications that meet business needs.

What is a Full Stack Developer?

A Full Stack Developer is a software professional who is skilled in both front-end (client side) and back-end (server side) development. They are capable of designing, building, and maintaining complete web applications or systems, handling everything from user interfaces and databases to server logic and APIs. Full Stack Developers often work with a range of programming languages and frameworks, such as JavaScript, HTML/CSS, Node.js, Python, and SQL, among others. Their versatility allows them to contribute to multiple stages of the software development lifecycle, making them valuable assets to development teams.
What cities near O'Fallon, IL are hiring for Full Stack Developer jobs? Cities near O'Fallon, IL with the most Full Stack Developer job openings:
Infographic showing various Full Stack Developer job openings in O'Fallon, IL as of July 2026, with employment types broken down into 100% Full Time. Highlights an 50% In-person, and 50% Remote job distribution, with an average salary of $114,979 per year, or $55.3 per hour.
Software Developer - Intermediate

Software Developer - Intermediate

RIVIDIUM

Saint Louis, MO

Full-time

Posted 21 days ago


Job description

RiVidium Inc. is seeking a Software Developer to develop, create, maintain, and write/code new (or modifies existing) computer applications, software, or specialized utility programs.

Tasks:

  • Automate the Risk Management Framework (RMF) process to the fullest extent.
  • Develop custom tools and dashboards, including executive data visualizations in Tableau, to support and enhance system continuous monitoring efforts.
  • Lead intermediate-level developers to success.
  • Act as a customer-facing representative engaging with key stakeholders.
  • Serve as a Frontend Designer to develop and design application interfaces using HTML, CSS, JavaScript, and React.
  • Write, develop, and deploy robust code across the full stack, utilizing languages such as Python.
  • Develop, integrate, and maintain databases to support backend application requirements.
  • Communicate effectively with all levels of personnel, both technical and non-technical.
  • Analyze information to determine, recommend, and plan the development of a new application or modification of an existing application.
  • Analyze user needs and software requirements to determine feasibility of design within time and cost constraints.
  • Apply coding and testing standards, apply security testing tools including "'fuzzing" static-analysis code scanning tools, and conduct code reviews.
  • Apply secure code documentation.
  • Capture security controls used during the requirements phase to integrate security within the process, to identify key security objectives, and to maximize software security while minimizing disruption to plans and schedules.
  • Compile and write documentation of program development and subsequent revisions, inserting comments in the coded instructions so others can understand the program.
  • Confer with systems analysts, engineers, programmers, and others to design application and to obtain information on project limitations and capabilities, performance requirements, and interfaces.
  • Consult with engineering staff to evaluate interface between hardware and software.
  • Correct errors by making appropriate changes and rechecking the program to ensure that desired results are produced.
  • Design, develop, and modify software systems, using scientific analysis and mathematical models to predict and measure outcome and consequences of design.
  • Develop secure code and error handling.
  • Evaluate factors such as reporting formats required, cost constraints, and need for security restrictions to determine hardware configuration.
  • Identify basic common coding flaws at a high level.

Abilities:

  • Ability to demonstrate a deep knowledge of software development and showcase a high level of understanding.
  • Ability to design and develop continuous monitoring tools and dashboards, analyzing and visualizing complex data using Tableau and other technologies.
  • Ability to operate effectively as a Full Stack Developer using Python, HTML, CSS, and JavaScript.
  • Ability to build interactive user interfaces using React and design robust database structures.
  • Ability to understand and apply the Risk Management Framework (RMF).
  • Ability to tailor code analysis for application-specific concerns.
  • Ability to use and understand complex mathematical concepts (e.g., discrete math).
  • Ability to develop secure software according to secure software deployment methodologies, tools, and practices.
  • Ability to apply cybersecurity and privacy principles to organizational requirements (relevant to confidentiality, integrity, availability, authentication, non-repudiation).
  • Ability to identify critical infrastructure systems with information communication technology that were designed without system security considerations.

Requirements:

  • Must possess established Risk Management Framework (RMF) knowledge upon hire.
  • Demonstrated experience with Python, HTML, CSS, JavaScript, and React.
  • Demonstrated experience working with databases, building visualizations in Tableau, and developing tools for continuous monitoring.
  • Bachelor degree or higher from an accredited college or university
  • Prefer an accredited Computer Science, Cyber Security, Information Technology, Software Engineering, Information Systems, or Computer Engineering degree; or a degree in a Mathematics or Engineering field.

Certifications: IAT Level 2

Active TS/SCI clearance required with the ability to get a CI Poly