Demo

Web Application Engineer

Flagger Force, LLC
Hummelstown, PA Full Time
POSTED ON 1/3/2026
AVAILABLE BEFORE 10/7/2027

Overview

Flagger Force, an industry leader in traffic control, is currently hiring a Web Application Engineer. This position will be based out of our corporate campus in Hummelstown, PA.  

 

We are seeking a talented and passionate Web Application Engineer to join our Engineering Team. The ideal candidate will be a skilled professional with a strong background in building modern, scalable, and high-performance web applications. You will be responsible for designing, developing, and maintaining our web-based applications, with a focus on creating a seamless and engaging user experience. This role requires expertise in ReactJS, a solid understanding of Progressive Web Apps (PWA), and experience working with and troubleshooting .NET-based APIs.

Responsibilities

  • Design, develop, and maintain high-quality, reusable, and reliable code for our web applications.
  • Collaborate with cross-functional teams, including product managers, designers, and other engineers, to define, design, and ship new features.
  • Develop and implement user interface components using ReactJS and its core principles.
  • Build and maintain Progressive Web Applications (PWAs) to deliver an enhanced user experience across all devices.
  • Work closely with other engineers to integrate with and troubleshoot .NET-based and 3rd Party APIs.
  • Optimize applications for maximum speed, scalability, and responsiveness.
  • Write and maintain comprehensive documentation for new and existing features.
  • Participate in code reviews to maintain a high level of code quality and consistency.

Stay up-to-date with emerging technologies and industry trends to ensure our applications remain modern and competitive.

Qualifications

  • Proven experience as a Web Application Engineer, Front-End Engineer, or similar role.
  • Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model.
  • In-depth knowledge and hands-on experience with ReactJS and its ecosystem.
  • Familiarity with Progressive Web App (PWA) concepts and best practices.
  • Experience working with and troubleshooting .NET-based and 3rd-party APIs.
  • Familiarity with modern front-end build pipelines and tools.
  • Experience with agile software development methodologies and tools such as Git, Jira, and Confluence.
  • A knack for benchmarking and optimization.
  • Excellent problem-solving skills and attention to detail.
  • Strong communication and collaboration skills.
  • Experience with cloud environments such as Azure and Google Cloud as well as datastores based on SQLServer or PostgreSQL is nice to have.
  • Steel toed boots or the ability to obtain prior to joining the organization. 
  • 2 years minimum industry related experience

Preferred qualifications:

  • A Bachelor’s degree in Computer Science preferred

Education

High School Diploma

Salary.com Estimation for Web Application Engineer in Hummelstown, PA
$98,574 to $114,822
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