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Mid Level Frontend Developer React Js Jobs in Missouri

Ascension

Senior Fullstack Software Engineer

Saint Louis, MO · On-site +1

$128K - $178K/yr

Build modern, responsive front-end user interfaces using Next.js, React, and TypeScript to ensure ... Expert-level proficiency in Java and Spring Boot paired with strong hands-on experience in Next.js ...

Diligent Corporation

If you're looking for a mid-level role with real ownership, modern tooling, and the chance to grow ... with frontend technologies such as Vue, React, Blade, or Livewire in a Laravel context. * Prior ...

Navtech, Inc.

FULL STACK JAVA DEVELOPER

Lake Saint Louis, MO · On-site

$49.75 - $64.25/hr

Struts 2/ Angular JS / React JS * Spring 3.0, EJB 3, Hibernate * HTML 5, Javascript, JQuery, JSON ... Sun/ Oracle Certified Java Programmer desirable Best Regards, Kevin Smith | PH: 224-296-3545

Leidos

Mid-Level Test Engineer

Valley Park, MO · On-site

$87K - $157K/yr

As a Mid-Level Test Engineer, you will play a key role in ensuring the delivery of reliable, secure ... Familiarity with CI/CD tools including Jenkins, GitLab, Azure DevOps, or similar platforms.

Leidos

Mid-Level Test Engineer

Hazelwood, MO · On-site

$87K - $157K/yr

As a Mid-Level Test Engineer, you will play a key role in ensuring the delivery of reliable, secure ... Familiarity with CI/CD tools including Jenkins, GitLab, Azure DevOps, or similar platforms.

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Mid Level Frontend Developer React Js information

What is the difference between Mid Level Frontend Developer React Js vs Frontend Developer Vue.js?

AspectMid Level Frontend Developer React JsFrontend Developer Vue.js
Required SkillsProficiency in React.js, JavaScript, HTML, CSS, state managementProficiency in Vue.js, JavaScript, HTML, CSS, component-based architecture
Work EnvironmentWeb development teams using React.js frameworksWeb development teams utilizing Vue.js frameworks
Common Industry UsagePopular in large-scale applications, enterprise solutionsFavored for flexible, lightweight projects, startups

Both roles require strong JavaScript skills and familiarity with modern frontend frameworks. The main difference lies in the specific framework: React.js is widely used in enterprise environments, while Vue.js is known for its simplicity and flexibility. Choosing between them depends on the project requirements and team preferences.

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Sr. Software Engineer (TS/SCI) - NGA

LaunchCode

Saint Louis, MO • On-site

$170K - $185K/yr

Full-time

Posted 7 days ago

Job description

Description
Position Type: Direct Hire / Full-Time
Pay: $170,000-$185,000 + Relocation Assistance
Location: Downtown St. Louis, MO or Springfield, VA
Clearance: Active TS/SCI required (must be willing to obtain CI Poly)
Hiring Timeline: Immediate
Company: The name of our partner organization will be disclosed during the interview process. This is not a direct role with LaunchCode; it is a position through LaunchCode, working with one of our partner companies.
Disclaimer: We are unable to provide work sponsorship for this role. U.S. Citizenship and an active TS/SCI clearance are required for this position.
Position Overview:
Our partner is seeking a passionate and mission-focused Senior Software Engineer to support NGA initiatives focused on geospatial intelligence and FAA/public air traffic control insights. This is an opportunity to work with modern software development practices and technology stacks while developing intelligence analysis products that address critical mission challenges for NGA customers.
The ideal candidate is energized by modern architectures, enjoys solving challenging technical problems, and can contribute across the software development lifecycle. Depending on the program, the role may focus on AERO applications supporting FAA and public air traffic control insights or the Geospatial Center of Excellence.
Position Responsibilities:
  • Design, develop, and maintain enterprise software applications using modern JavaScript frameworks, including React.js.
  • Develop backend services and RESTful APIs using Java, Spring, Spring Boot, and/or Node.js.
  • Architect and implement scalable, resilient microservices-based systems.
  • Design and develop web services and APIs with a focus on performance, reliability, and security.
  • Translate complex business and mission requirements into scalable technical solutions.
  • Own the full software development lifecycle, including design, development, testing, deployment, and maintenance.
  • Develop high-performance applications supporting mission-critical intelligence analysis products.
  • Design and work with relational, spatial, and NoSQL databases.
  • Develop and integrate database solutions supporting enterprise applications.
  • Work with AWS cloud environments and AWS tooling, including S3.
  • Collaborate with software engineers, technical teams, and mission stakeholders to deliver production-ready solutions.
  • Contribute to modern software architecture, development practices, and continuous improvement initiatives.
  • Support the development of geospatial information systems and applications when applicable.

Required Skills/Experience:
  • Bachelor's degree or equivalent in Computer Science, Engineering, Mathematics, Information Systems, or a related technical field.
  • 10+ years of experience in enterprise software engineering/development.
  • Experience designing, developing, and maintaining full-stack applications.
  • Strong experience with React.js.
  • Experience with Java and Spring/Spring Boot.
  • Foundational knowledge of Node.js.
  • Experience with web services architecture, design, and development.
  • Experience designing and developing microservice architectures.
  • Experience with RESTful web services and APIs.
  • Experience with relational database design.
  • Experience with spatial database design.
  • Experience with NoSQL database design.
  • Experience working in AWS and utilizing AWS tooling such as S3.
  • Ability to translate business requirements into high-quality, production-ready software.
  • Strong understanding of software development lifecycle and modern development practices.

Desired Skills/Experience:
  • Experience as a full-stack developer across web services, databases, and front-end development.
  • with Spring applications.
  • Experience developing geospatial information systems (GIS).
  • Experience working with open-source and proprietary geospatial data formats.
  • Experience supporting intelligence analysis or other mission-focused applications.
  • Additional AWS/cloud development experience.

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