Sr Full stack UI Engineer (React/TypeScript + C#/.NET Core + Blazor + REST APIs) | Sacramento, CA – Onsite

Job Title: Full Stack Engineer (UI Engineer)

Location: Sacramento, CA (Onsite)

Contract:C2C

 

Primary focus:

Design and implement secure, accessible, and business-friendly full-stack applications using Blazor, .NET Core, and REST APIs, supporting delegated administration and approved business workflows.

Design and implement an accessible, business-friendly portal experience for delegated Amazon Connect administration.

 

Key responsibilities

•          Design and implement the React and TypeScript user interface for all approved BOP capabilities.

•          Create role-based navigation, guided forms, search, filtering, selection, confirmations, status, and audit-history experiences.

•          Translate technical Amazon Connect concepts into clear business language and safe administration workflows.

•          Implement client-side validation, impact warnings, safe defaults, before and after summaries, and clear outcome messages.

•          Integrate frontend components with authenticated BOP backend APIs without exposing privileged credentials or operations.

•          Implement applicable EDD accessibility, responsive-design, browser-compatibility, usability, and design-system requirements.

•          Create component, interaction, end-to-end, accessibility, error-state, and regression tests.

•          Participate in user reviews, demonstrations, defect resolution, documentation, and iterative improvement.

 

Minimum qualifications

•          Five or more years of modern web application development experience.

•          Strong React, TypeScript, HTML, CSS, and frontend architecture skills.

•          Experience building role-based enterprise applications with complex forms, validation, workflows, and API integration.

•          Knowledge of accessible web application practices, including WCAG-aligned design and keyboard and screen-reader considerations.

•          Experience with frontend automated testing, secure session handling, safe error presentation, and performance optimization.

•          Ability to collaborate with business users and convert operational requirements into clear and usable experiences.