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

Synthesis Systems

Full Stack Java Developer

Creve Coeur, MO · On-site

$49.25 - $63.50/hr

The Full Stack Developer provides frontend and backend development support. The successful candidate will also provide best practices to design single-page architecture (SPA) applications and micro ...

Synthesis Systems

Full Stack Java Developer

Creve Coeur, MO

$49.25 - $63.50/hr

The Full Stack Developer provides frontend and backend development support. The successful candidate will also provide best practices to design single-page architecture (SPA) applications and micro ...

Veracity

Java Full Stack Engineer

Saint Louis, MO · On-site

$51 - $65.75/hr

Java Full Stack Engineer Job Location: St. Louis, MO # Positions: 1 Employment Type: C2H Key Technology: Java, J2EE, Spring Boot Job Responsibilities: * Contribute to the planning, design, and ...

CYNET SYSTEMS

Java Full Stack Developer

Saint Louis, MO · On-site

$50/hr

Job Overview: Requirement/Must Have: * 5+ years of experience in Java. * Skills in developing applications using multi-tier architecture. * Knowledge of GCP/Any cloud. * Java/JEE, Spring, Spring boot ...

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TEKsystems

Full Stack .Net Developer

Wildwood, MO · Remote

$140K - $160K/yr

We are seeking a Full Stack Software Developer with deep expertise in backend services, API design, React/TypeScript, and applied AI--along with a strong understanding of SharePoint's development ...

Gallop Resources Inc

Fullstack Java Developer

Saint Louis, MO · On-site

$51 - $65.75/hr

Company Description , Full Stack Developer Skills: * Translates business requirements into technical details relevant to web application. * Familiarity with JS frameworks such as AngularJS, JQuery

Palnar

Sr. Java Full Stack Developer

O Fallon, MO · On-site

$49 - $63.25/hr

Have proficiency in Quality engineering and experience working with Quality leads to define processes and technologies. Passion for improving code quality using approaches such as unit and end to end ...

NR Consulting

Full Stack Java Developer

Saint Charles, MO · On-site

$49.50 - $63.75/hr

Full Stack Java Developer Location: Ofallon, MO 63368 Type: Contract Duration: Long Term Project Scope * Seeks a Senior Software Developer who will be a crucial part of our software team. * The ...

The Timberline Group

Developer C# .Net

Saint Louis, MO · On-site

We are seeking a full stack developer with JavaScript and C# .NET development to join our team in St. Louis, MO. This position has emphasis on front end development, but will be involved in all ...

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All JobsFull Stack Developer JobsFull Stack Developer Jobs in O'Fallon, MO

Full Stack Developer information

See O Fallon, MO salary details

$22

$55

$80

How much do full stack developer jobs pay per hour?

As of Jul 1, 2026, the average hourly pay for full stack developer in O'Fallon, MO is $55.44, according to ZipRecruiter salary data. Most workers in this role earn between $46.11 and $63.85 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.
More about Full Stack Developer jobs
What cities near O'Fallon, MO are hiring for Full Stack Developer jobs? Cities near O'Fallon, MO with the most Full Stack Developer job openings:
Full Stack Developer jobs near you
Infographic showing various Full Stack Developer job openings in O'Fallon, MO as of June 2026, with employment types broken down into 78% Full Time, and 22% Contract. Highlights an 100% In-person job distribution, with an average salary of $115,309 per year, or $55.4 per hour.
Full Stack Java Developer

Full Stack Java Developer

Synthesis Systems

Creve Coeur, MO • On-site

$49.25 - $63.50/hr

Contractor

Posted 12 days ago

Job description

Company Description
Synthesis has extensive experience building large-scale, enterprise systems for government and commercial clients. We specialize in developing AI, Big Data, Data Analytics, iOS, Android, JEE, Portals, and database-driven applications. Our extensive knowledge spans across all application tiers. Since, we were founded in 2003, Synthesis has been delivering large-scale systems based on design patterns, service-oriented architectures, dynamic and intutive web interfaces, and web services. Our clients include Fortune 100 companies and a number of government agencies.
Job Description
The Full Stack Developer provides frontend and backend development support. The successful candidate will also provide best practices to design single-page architecture (SPA) applications and micro services using cutting edge and open source technologies including J2EE, Node.JS, RESTful, HTML5, Angular, JavaScript, and AWS technologies. The individual will work in an agile environment to support short sprints and rapid delivery of releases.
Qualifications
Hands on experience on React JS,NodeJS, Redux, Java and Postgres SQL on AWS platform
Hands on experience on Vue. JS, Java and Postgres SQL on AWS platform
Overall 6+ years of Candidate experience needed
Good Communication skills
Hands on Experience on the JS
Must have experience :
NodeJS
ReactJs
AWS
Micro-Services
Additional Information
All your information will be kept confidential according to EEO guidelines.
This is a contract position and independent contractors welcomed.

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