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React Js Developer Jobs in St Louis, MO (NOW HIRING)

Palnar

Sr. Java Full Stack Developer

O Fallon, MO · On-site

$49 - $63.25/hr

Angular and React JS experience preferred. Deep understanding of JavaScript and it's benefits and ... Have proficiency in Quality engineering and experience working with Quality leads to define ...

Northern Base

Frontend Angular Engineer

O Fallon, MO · On-site

Role - Frontend Angular Engineer Experience Required -5+ Years Must Have Technical / Functional ... Experience with React.js development. Roles & Responsibilities Design, develop, and maintain ...

Ascension

Senior Fullstack Software Engineer

Saint Louis, MO · On-site +1

$128K - $178K/yr

Studio Engineering Product Delivery Schedule: Full-time Salary: $128,054.78 - $178,500.96 per year ... Build modern, responsive front-end user interfaces using Next.js, React, and TypeScript to ensure ...

Bana Solutions, LLC

Lead Technologist

Saint Louis, MO · On-site

$72K - $98K/yr

React.js, Node.js, .NET Framework * RESTful API design and development * Databases: * PostgreSQL / PostGIS * DevOps & Tools: * GitLab, CI/CD pipelines, Jira * Windows and Linux environments DESIRED ...

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All JobsReact Js Developer JobsReact Js Developer Jobs in St. Louis, MO

React Js Developer information

See St Louis, MO salary details

$41.3K

$107.3K

$151.2K

How much do react js developer jobs pay per year?

As of Sep 2, 2026, the average yearly pay for react js developer in St. Louis, MO is $107,346.00, according to ZipRecruiter salary data. Most workers in this role earn between $101,100.00 and $117,600.00 per year, depending on experience, location, and employer.

What is a React JS developer?

A React JS Developer is a software engineer who specializes in building user interfaces and web applications using the React JavaScript library. They are responsible for developing reusable components, managing application state, and ensuring high-performance, responsive designs. React JS Developers often work closely with designers and backend developers to deliver seamless user experiences. Their expertise includes JavaScript, HTML, CSS, and modern front-end development tools.

What are the key skills and qualifications needed to thrive as a React JS developer?

To thrive as a React JS Developer, you need a strong grasp of JavaScript, HTML, CSS, and modern React concepts such as hooks, state management, and component lifecycle, typically supported by a degree in computer science or relevant experience. Familiarity with version control systems like Git, build tools such as Webpack or Babel, and testing frameworks like Jest is commonly required. Problem-solving, effective communication, and teamwork are crucial soft skills that distinguish successful developers in this role. These abilities ensure efficient development of scalable, maintainable applications and smooth collaboration within cross-functional development teams.

What are some common challenges faced by React JS developers when integrating with backend APIs?

React JS Developers often encounter challenges such as managing asynchronous data flows, handling errors gracefully, and ensuring smooth communication between the frontend and backend services. Debugging issues related to inconsistent API responses or cross-origin resource sharing (CORS) can also be common. Staying up-to-date with evolving RESTful or GraphQL API standards and ensuring secure authentication and data validation are essential for successful integration.

What is the difference between React Js Developer vs Front-End Developer?

AspectReact Js DeveloperFront-End Developer
Required SkillsProficiency in React.js, JavaScript, HTML, CSSHTML, CSS, JavaScript, frameworks like Angular or Vue
Work EnvironmentFocus on building user interfaces with ReactDeveloping and maintaining websites/apps across various frameworks
Industry UsageCommon in companies using React for UI developmentBroader role across multiple front-end technologies

React Js Developers specialize in building user interfaces using React.js, while Front-End Developers work across various frameworks and technologies to create complete website or app front-ends. React Js Developers focus more on React-specific skills, whereas Front-End Developers have a broader skill set applicable to multiple frameworks.

What are popular job titles related to React Js Developer jobs in St. Louis, MO?

For React Js Developer jobs in St. Louis, MO, the most frequently searched job titles are:

What job categories do people searching React Js Developer jobs in St. Louis, MO look for?

The top searched job categories for React Js Developer jobs in St. Louis, MO are:

What cities near St. Louis, MO are hiring for React Js Developer jobs?

Cities near St. Louis, MO with the most React Js Developer job openings:

React Js Developer jobs near you
Infographic showing various React Js Developer job openings in St. Louis, MO as of August 2026, with employment types broken down into 100% Contract. Highlights an 100% In-person job distribution, with an average salary of $107,346 per year, or $51.6 per hour.

Sr. Java Full Stack Developer

Palnar

O Fallon, MO • On-site

$49 - $63.25/hr

Full-time

This job post has expired 2 days ago. Applications are no longer accepted.

Job description

Successfully designed and developed externally facing web applications utilizing modern single page application frameworks. Angular and React JS experience preferred.
Deep understanding of JavaScript and it's benefits and quirks.
Proven experience building ADA and WCAG compliant web applications.
Successfully designed and developed cloud ready REST APIs utilizing industry best practices.
Deep understanding of Cloud Architecture and it's benefits and quirks.
Deep understanding of Messaging frameworks and event-based architecture and it's benefits and quirks.
Possess an understanding of multi-tier web development; including knowledge of server-side technologies and databases.
Understanding of web application optimizations such as progressive web apps, web workers, browser repaints and reflows, performance and memory optimizations, debugging memory leaks, caching, flame graphs.
Experience and knowledge of authentication and authorization workflows using concepts like JWT.
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 testing.
Deep knowledge of Continuous Integration and Delivery and toolsets that provide this ability.
Understanding of agile principles and methodologies and experience implementing and adapting them to fit the team's needs.
Use and understand Git based source control systems.
What are your top 3 required technical skills
We are looking for a developer who is strong in backend development and has basic skills to perform UI development
Backend Skills
Java 17
Spring Boot 3.x
SQL / Hibernate / JPA
Data Structure & Algorithms / Cloud Principles
UI Skills
Demonstrated skills using Angular 13+
Demonstrated skills making UI ADA, WCAG and Responsive Web compliant
Unit test framework using Jasmine, Karma

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