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

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 ...

Deloitte

Full Stack Engineer

Saint Louis, MO

Work you'll do As a Full-stack Software Engineer , you will actively engage in your engineering craft, taking a hands-on approach to multiple high-visibility projects. Your expertise will be pivotal ...

Gallop Resources Inc

Fullstack Java Developer

Saint Louis, MO · On-site

$51 - $65.75/hr

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

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 ...

DataAnnotation

Full Stack Engineer

Saint Louis, MO · Remote

$40 - $75/hr

As a DataAnnotation's coder, you'll be part of a growing community of over 100,000 professionals -- including front-end, back-end, full-stack, machine learning, and other engineers -- who are driving ...

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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 Jun 11, 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.

Will AI replace full stack dev?

Full stack developers design and build both front-end and back-end components of applications. While AI tools can automate certain coding tasks and improve efficiency, they are unlikely to fully replace full stack developers due to the need for creativity, problem-solving, and understanding complex systems. Developers will continue to adapt by integrating AI tools into their workflows and focusing on skills that require human judgment.

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 jobs can a full stack developer do?

A full stack developer can work in roles such as web developer, software engineer, or application developer, handling both front-end and back-end development. They often work with technologies like JavaScript, HTML, CSS, and server-side languages, and may be involved in designing, coding, testing, and maintaining web applications across various industries.

Is fullstack developer still in demand?

Full stack developers remain in high demand due to their ability to work on both front-end and back-end development, with skills in frameworks like React, Angular, and Node.js. The role is essential in many industries, and demand is expected to grow as companies continue to prioritize digital transformation and web applications.

What exactly does a full stack developer do?

A full stack developer is responsible for designing, developing, and maintaining both the front-end (user interface) and back-end (server, database) components of web applications. They work with programming languages like JavaScript, HTML, CSS, and server-side technologies, often using frameworks and tools to create complete solutions. This role requires knowledge of both client-side and server-side development, as well as problem-solving skills and familiarity with version control systems like Git.

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 77% Full Time, 22% Part Time, and 1% Temporary. Highlights an 88% Physical, 4% Hybrid, and 8% Remote job distribution, with an average salary of $115,309 per year, or $55.4 per hour.

Full-Stack JavaScript Developer

duvari group

Chesterfield, MO

Other

Posted 13 days ago

Job description

Full Stack JavaScript Developer (Contract-to-Hire)

Are you a Full Stack JavaScript Developer looking to accelerate your technical growth while working alongside experienced engineers on a modern SaaS platform? This contract-to-hire opportunity offers the chance to contribute to a greenfield product initiative, gain hands-on mentorship, and position yourself for long-term career advancement.

You’ll spend your first six months embedded with a senior engineering team, helping design and build a new software platform from the ground up. The long-term goal is a seamless transition into a permanent role with the end client, becoming a key contributor within their growing internal development team.

This is an excellent opportunity for someone who thrives in a collaborative environment, embraces change, and wants to make a meaningful impact while continuing to develop their technical and professional skills.

What You’ll Do...

  • Design and develop features for a modern, full-stack SaaS application.
  • Build responsive, user-focused front-end experiences using Vue.js or React.
  • Develop scalable back-end services and APIs using Node.js.
  • Work closely with senior engineers to learn best practices in architecture, development, and deployment.
  • Collaborate across technical and business teams to deliver high-quality solutions.
  • Contribute to a growing product team where your ideas and input will have visibility and impact.
  • Participate in technical discussions, problem-solving sessions, and ongoing product evolution.

What We’re Looking For...

  • 3–5 years of professional full-stack software development experience.
  • Strong JavaScript development experience across both front-end and back-end technologies.
  • Experience with Vue.js (preferred) or React.
  • Experience building applications with Node.js.
  • Strong SQL skills and experience working with relational databases.
  • PostgreSQL experience is highly preferred.

Someone who...

  • Has a positive, adaptable attitude and can navigate changing priorities.
  • Enjoys collaborating with others and learning from experienced teammates.
  • Is comfortable rolling up their sleeves and contributing wherever needed.
  • Demonstrates strong communication skills and a team-first mindset.
  • Is eager to grow technically and professionally in a fast-moving environment.

Apply