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Senior Front End Developer

Allwyn Corporation
US, VA Full Time
POSTED ON 11/15/2025
AVAILABLE BEFORE 1/15/2026
 
Position: UI Expert/Front End Developer 
Location: Hybrid in Vienna, VA 
Duration: Long Term 


Job Description: 
Develop new client facing features for interactive web applications that rely heavily on REST APIs using modern web technologies.
• Work closely with Product Owner, UX and fellow engineers to understand and build web application from scratch.
• Write well-structured code that is easy to maintain and understand.
• Optimize code for performance, ensuring fast loading times and smooth user experiences.
• Build applications that adapt and work well across different devices and screen sizes.
• Use CSS preprocessors like Sass or Less to enhance CSS with variables and functions. Hence, making stylesheets more maintainable and reusable.
• Collaborate with fellow engineers, designers, analysts to define, design, and ship new features
• Knowledge of browser developer tools such as Chrome DevTools.
• Comfortable in working with branches, merging code, and resolving conflicts.
• Strong problem-solving and debugging skills.


Front-End Developer:
We are looking for mid to high-level Front-end engineer with extensive experience in React as well as in Angular version 8 and up, who will be part of a Digital Delivery team responsible for the client side of our service. Primary focus of this role will be to implement a complete responsive UI web application. The Front-end engineer will support innovative member and team member experiences that leverage the latest technologies in open source and the cloud technologies.
Main duties will include in ideating, experimenting, and developing modules, components, and coupling them into a functional application.

Required Qualifications: 
UI Expert

Required Skills:
  • Experience working with large enterprise codebase, sharing stylesheets
  • Experience working with component library/design systems
  • Experience writing easy to read, clean, consistent CSS
  • Experience writing reusable component styles
  • Experience writing semantic, accessible HTML
  • Experience with integrating 3rd party components into design system
Tech stack Required:
  • CSS/SASS
  • Storybook(or similar tool)
Must Have Skills:
  • Angular 10 and above
  • Well versed in Typescript
  • Bootstrap
  • ng-Bootstrap
Skills:
• Must have hands-on experience in Angular 10 and up
• Must have hands-on experience in React
• Experience in writing test cases using Karma, Protractor and other frameworks
• Experience working with Azure DevOps and/or AWS
• Experience with Github
•• Strong hands on development with Single Page Applications
• 5 years of experience developing dynamic, highly interactive user interfaces for the web
• Ability to manage and interface with and interface with APIs and RESTful web services

Desired Qualifications: 
  • DevOps experience such as creating configuration, build, and test scripts for Continuous Integration environments
  • Well versed in software architecture patters
  • Must be an expert in CSS3, boot strap and any other similar technologies
  • Advanced knowledge in CSS, HTML, and JavaScript
  • Experience with Test Driven Development (TDD) and Agile (XP)
  • Follow best practices with client-side Angular code
  • Be able to create self-contained, reusable, and testable modules and components
  • Ability to perform unit testing
  • Be proficient in TypeScript development
  • Knowledge and experience with WCAG 2.0 accessibility standards and guidelines
  • Experience with accessibility audit and quality assurance tool and processes.
  • Experience working in Agile environment 

Flexible work from home options available.




Allwyn is a 20-year-old systems integrator in Northern Virginia.

We are a provider of information technology solutions to commercial and government customers. Committed to delivering excellence, we help our customers realize their vision through an in-depth understanding of their business needs. Leveraging its experience across a broad spectrum of industries, Allwyn can mobilize the right combination of people, process and technology to meet and exceed our customers’ expectations. Allwyn is managed by a team of industry experts with extensive backgrounds in Data Science/Machine Learning, Data Analytics, Application Development, Quality Assurance, Infrastructure Support, and Project/Program Management. We are located in Herndon VA.

To learn more about us, please visit us at www.allwyncorp.com.


Salary.com Estimation for Senior Front End Developer in US, VA
$112,556 to $131,751
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