Frontend/UI Developer

ASSYST is seeking a skilled Frontend/UI Developer to support our client in Austin TX Location:

Austin, TX

Job Type:

Contract (Corp to Corp/C2C or 1099)

Position:

Hybrid - On Site

Job Description: The Frontend/UI Developer will be responsible for designing, developing, and maintaining enterprise-class web applications within the Java EE (JEE) ecosystem. This role demands deep expertise in front‑end technologies, SPA frameworks (Angular/React), and server‑side integration, ensuring highly responsive, secure, and scalable solutions. The ideal candidate will have extensive experience building robust UI/UX solutions, implementing RESTful services, and applying best practices in performance and maintainability.

Responsibilities:

Design, develop, and maintain enterprise‑grade front‑end and server‑side components on the JEE platform.

Implement and enhance Single Page Applications (SPAs) using Angular with TypeScript and related modern frameworks.

Develop and integrate RESTful and SOAP‑based web services with secure access controls (JWT, OAuth, etc.).

Create responsive, client‑facing applications with dynamic and accessible user interfaces optimized for performance and usability.

Develop self‑contained, reusable, and testable modules and components for scalable front‑end applications.

Implement authentication, authorization, and caching strategies to ensure application performance and security.

Collaborate with backend developers, UI/UX designers, and business analysts to deliver seamless user experiences.

Apply best practices in coding standards, performance optimization, scalability, and maintainability.

Participate in Agile/Scrum development cycles, providing input on design and architecture decisions.

Maintain documentation for designs, components, and technical specifications.

Required Skills

8+ years

of hands‑on experience in

Front End/UI development

for enterprise‑class JEE applications.

8+ years

of hands‑on experience in

Server‑side/Web Services development

using the JEE platform.

4+ years

of experience implementing

SPAs with Angular and TypeScript .

4+ years

of experience developing

secure RESTful services

using

JWT, OAuth , and related standards.

Strong hands‑on experience with

JEE Application Servers , authentication, authorization, and caching mechanisms.

Proficiency in:

Languages/Technologies:

Java, JEE, REST/SOAP, HTML5, JavaScript, jQuery, AJAX, CSS3, Bootstrap, SASS, TypeScript, Spring, JSP, Struts, JSON, XML, JWT, Maven, OpenAPI v3, OAuth

Proven experience implementing

responsive and client‑facing applications

using

Angular/React

and traditional

JSP/Struts

frameworks.

Experience developing

modular, reusable, and testable

code components.

Demonstrated ability to apply best practices in

application design, scalability, and performance .

Preferred Skills

3+ years

of experience with

JBoss

or

IBM WebSphere Application Server 8+ .

3+ years

of experience with

Agile development methodologies

(preferably Scrum).

2+ years

of experience developing for

mobile and tablet platforms .

ASSYST is an Equal Opportunity Employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, age, disability, military status, national origin or any other characteristic protected under federal, state, or applicable local law.

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