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Junior Frontend Software Engineer Jobs in Missouri

Interco

Junior Software Developer

Saint Louis, MO

$60K - $65K/yr

Interco is seeking a talented Junior Software Developer with a strong background in JavaScript and ... Develop responsive and user-friendly front-end interfaces for our ERP software using JavaScript ...

Interco Trading

Junior Software Developer

Saint Louis, MO · On-site

$60K - $65K/yr

Interco is seeking a talented Junior Software Developer with a strong background in JavaScript and ... Develop responsive and user-friendly front-end interfaces for our ERP software using JavaScript ...

Jobgether

As a Frontend Engineer, you will help build and evolve a highly technical SaaS platform used to simplify and automate complex infrastructure workflows. Working within a collaborative product team ...

Mastercard, Inc.

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

... junior team members, and performing code reviews. This is a vital role responsible for planning ... front-end frameworks, and/or relational database technologies. - Event Driven Framework, Full APIs ...

Jobgether

Our partner is looking for a Frontend Engineer (React) based in Netherlands. Join a remote-first engineering team building a highly technical platform that helps organizations manage and automate ...

MasterCard

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

... junior team members, and performing code reviews. This is a vital role responsible for planning ... front-end frameworks, and/or relational database technologies. - Event Driven Framework, Full APIs ...

Walmart

Principal, Software Engineer

Noel, MO · On-site

$110K - $220K/yr

In addition to these technical duties, you will provide mentorship to junior engineers, fostering ... Our tech stack includes Java for backend services and ReactJS for frontend development, providing ...

Walmart

Principal, Software Engineer

Cassville, MO · On-site

$110K - $220K/yr

In addition to these technical duties, you will provide mentorship to junior engineers, fostering ... Our tech stack includes Java for backend services and ReactJS for frontend development, providing ...

Walmart

Principal, Software Engineer

Anderson, MO · On-site

$110K - $220K/yr

In addition to these technical duties, you will provide mentorship to junior engineers, fostering ... Our tech stack includes Java for backend services and ReactJS for frontend development, providing ...

Walmart

Staff, Software Engineer

Anderson, MO · On-site

$110K - $220K/yr

In addition to these technical duties, you will provide mentorship to junior engineers, fostering ... Our tech stack includes Java for backend services and ReactJS for frontend development, providing ...

Walmart

Staff, Software Engineer

Noel, MO · On-site

$110K - $220K/yr

In addition to these technical duties, you will provide mentorship to junior engineers, fostering ... Our tech stack includes Java for backend services and ReactJS for frontend development, providing ...

Walmart

Staff, Software Engineer

Cassville, MO · On-site

$110K - $220K/yr

In addition to these technical duties, you will provide mentorship to junior engineers, fostering ... Our tech stack includes Java for backend services and ReactJS for frontend development, providing ...

HNTB

Software Engineer III

Kansas City, MO · On-site

You will also provide technical guidance to junior team members and support the evolution of ... Collaborating with the front-end developers and other team members to establish objectives and ...

MasterCard

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

Mentor junior engineers, share technical expertise, and provide guidance on engineering best ... Solid understanding of front-end engineering principles and experience with Angular or React.

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Junior Frontend Software Engineer information

What are the key skills and qualifications needed to thrive as a junior frontend software engineer, and why are they important?

To thrive as a Junior Frontend Software Engineer, you need proficiency in HTML, CSS, JavaScript, and a basic understanding of responsive web design, often backed by a computer science degree or relevant coursework. Familiarity with frameworks like React or Vue.js, version control systems such as Git, and basic debugging tools is typically expected. Strong problem-solving skills, attention to detail, and effective communication help you collaborate with team members and quickly learn on the job. These skills and qualities are crucial for building user-friendly interfaces, maintaining code quality, and integrating smoothly into development teams.

What does a junior frontend software engineer do?

A Junior Frontend Software Engineer is responsible for developing and maintaining the user interface of web applications. They work with technologies like HTML, CSS, and JavaScript to create visually appealing and interactive websites. Typically, they collaborate with designers and backend developers to ensure that the application is both functional and user-friendly. Juniors often focus on learning best practices, fixing bugs, and implementing new features under the guidance of more experienced engineers.

What are common challenges faced by junior frontend software engineers when transitioning from learning to working on production code?

Junior Frontend Software Engineers often find adapting to real-world codebases challenging, as they tend to be larger, more complex, and involve collaboration with multiple team members. They may encounter difficulties understanding legacy code, adhering to established coding standards, and using version control systems effectively. Additionally, balancing the need for rapid feature development with maintaining code quality and usability can be an adjustment. Support from senior engineers and regular code reviews are valuable in overcoming these challenges and building confidence.

What is the difference between Junior Frontend Software Engineer vs Junior Web Developer?

AspectJunior Frontend Software EngineerJunior Web Developer
Required CredentialsTypically a degree in Computer Science or related field, familiarity with HTML, CSS, JavaScriptOften a degree or self-taught, basic knowledge of HTML, CSS, JavaScript
Work EnvironmentCollaborates with designers, backend developers, and product teams in tech companiesWorks on website or application development, often in digital agencies or freelance projects
Employer & Industry UsageUsed in tech startups, software companies, and enterprises focusing on web applicationsCommon in digital agencies, freelance work, and small business websites

The main difference is that Junior Frontend Software Engineers typically have a more technical focus on building and maintaining complex web applications, often requiring a deeper understanding of programming concepts. Junior Web Developers usually focus on creating and maintaining websites, with a broader but less specialized skill set. Both roles often require similar foundational skills but differ in scope and complexity.

What are the most commonly searched types of Frontend Software Engineer jobs in Missouri?

The most popular types of Frontend Software Engineer jobs in Missouri are:

What cities in Missouri are hiring for Junior Frontend Software Engineer jobs?

Cities in Missouri with the most Junior Frontend Software Engineer job openings:

Junior Frontend Software Engineer jobs near you

Software Engineer

Reinventing Geospatial, Inc. (RGi)

Saint Louis, MO • On-site

Full-time

Medical, Dental, Retirement, PTO

Re-posted 20 days ago

Job description

Reinventing Geospatial (RGi) is a leading expert in geospatial solutions for Defense, Intelligence, and Federal clients. We enhance situational awareness for soldiers and analysts by integrating software development with geospatial intelligence. Our projects range from data collection to advanced deep learning, leveraging tools like Python, Java, and ArcGIS.
We don't just fill roles we build teams of high performers and leaders who make an immediate impact. At our core, we're driven by innovation and powered by people who work at the intersection of passion and performance. Here, you'll collaborate with bold thinkers, leverage cutting edge technology, and tackle meaningful challenges from day one.
Our culture is defined and anchored by three pillars:
Energy: We bring passion, purpose, and urgency to our work.
Edge: We take initiative, embrace growth, and step outside our comfort zone.
Execution: We get things done smartly, decisively, and with real results.
If you're the kind of person who leads with initiative, thrives in a fast-paced environment, and is eager to create real impact, we want you on our team.
Clearance:
Active Top Secret clearance with an ability to obtain SCI access and willingness to obtain CI Polygraph
US Citizenship Required
As a Software Engineer, you will...
  • Lead full-stack software development of enterprise applications and services supporting our customer's GEOINT mission.
  • Design and implement secure, scalable microservices in cloud environments such as AWS GovCloud or C2S.
  • Guide and mentor junior and mid-level engineers, enforce code quality, and lead peer reviews.
  • Build and deploy applications using DevSecOps pipelines, container orchestration, and Infrastructure-as-Code tools.
  • Collaborate with cross-functional teams including analysts, UI/UX designers, DevOps engineers, and product owners.
  • Translate mission requirements into technical implementations that meet security, performance, and scalability needs.
  • Ensure compliance with our customer and IC cybersecurity and accreditation standards (e.g., RMF, STIGs).

Software Engineer Qualifications...
  • Bachelor's degree in Computer Science, Software Engineering, or related field and 6+ years experience.
  • Strong proficiency with: HTML, CSS, JSON, Ajax, and REST APIs
  • Object-oriented Programming: Python, Java, or JavaScript and Go
  • Front-end and Back-end Frameworks: React, Angular, Vue.js, jQuery, Spring Boot, Django, Node.js, Flask, or Svelte.
  • A strong working knowledge of: AWS, Azure, or similar cloud platforms, MySQL, PostgreSQL, or SQL Server
  • Hands on experience with: Windows, Linux, Git
  • Deep understanding of modern software design patterns and coding standards.
  • Experience architecting, developing, and delivering complex software systems into production.
  • Hands on experience developing containerized applications with Docker and Kubernetes.
  • Experience deploying to and developing in classified cloud environments (e.g., C2S, AWS GovCloud).
  • Familiarity with DevSecOps tools and practices (e.g., GitLab CI/CD, Jenkins, SonarQube, Nexus, Terraform).
  • Solid understanding of Agile methodologies and secure software lifecycle principles.
  • Strong, self-motivated desire to learn new programming languages, tools, frameworks, and techniques.

Additional Skills We'd Like to See:
  • Frontend Web Development: UI/UX
  • NoSQL Database: OpenSearch/Elasticsearch.
  • Cloud Exposure: AWS, IBM, Google, Azure, and Oracle and S3, SQS, SNS, EC2, CloudFormation and RDS.
  • Knowledge of geospatial data formats, tools, and standards (e.g., OGC, GeoServer, PostGIS, ESRI).
  • Experience with IC enterprise environments and tools (e.g., Keycloak, Vault, CloudFormation)
  • Certifications such as AWS Certified Developer, CISSP, Security+, SAFe Agile or similar.

Who we are:
Reinventing Geospatial, Inc. (RGi) is a fast-paced small business that has the environment and culture of a start-up, with the stability and benefits of a well-established firm. We solve complex problems within geospatial software development and national defense to make an Immediate Impact for our nation's soldiers and analysts.
We pride ourselves on giving employees an exceptional life experience, where creativity thrives, and challenges are simply part of the fun. We provide truly excellent benefits, including:
• 100% paid employee healthcare & dental insurance
• Paid parental leave
• 401k with matching
• Escalating vacation time
• Referral bonuses
• Tuition reimbursement
• Professional development training
• Free beverages and snacks
• Weekly catered lunches and breakfast on Fridays
Grow to be our next leader:
At RGi, fostering a strong and organic corporate culture is paramount and serves as a compass on the decisions we make and how we operate the company. We believe our culture of camaraderie, innovation, and collaboration reflects the caliber of our employees and their dedication to the mission of providing quality software to our customers. As such, we want our employees to feel empowered to seek growth and leadership opportunities within the company and position us to maintain our culture as we grow. RGi provides opportunities, resources, training, and mentorship to all our employees to let them take control of their careers and become a leader or a crucial member of our company. If this is what you are looking for in a company, then you are what we are looking for in an employee.
Reinventing Geospatial, Inc. is an Equal Opportunity Employer. Employment decisions are made without regard to race, color, religion, sex, national origin, age, veteran status, disability, or any other protected class. U.S. Citizenship is required for all positions.
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

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