React FrontEnd Developer

O2 Technologies,Inc; Whippany (NJ); On-site; USD 90,000 - 130,000; Full time

Job summary

O2 Technologies,Inc is seeking a front-end engineer to build modern web interfaces for SaaS products in a fast-paced environment. You will collaborate with design and backend teams to deliver features that are robust, accessible, and scalable.

You will own UI component libraries, optimize performance, conduct code reviews, and participate in Agile/Scrum ceremonies while integrating REST/GraphQL APIs and ensuring quality through testing.

Qualifications

• Bachelor's degree in CS/SE or related field.
• Strong front-end fundamentals and modern JS tech.
• Experience with SaaS or cloud applications is a plus.

Responsibilities

• Collaborate with Design and Backend teams to implement UI features.
• Conduct code reviews and ensure QA standards.
• Develop responsive UI and reusable component architecture.
• Optimize front-end performance and load times.
• Integrate REST/GraphQL APIs and manage state.
• Participate in Agile/Scrum ceremonies and deliver iteratively.

Skills

React.js

JavaScript

TypeScript

HTML5

CSS3

REST API

Git

CI/CD

Jest

Testing Library

Azure

Docker

Kubernetes

GraphQL

Micro Frontends

Education

BS in CS

MS preferred

Tools

React.js

Job description

• Collaboration with Design & Backend Teams
• Code Review & Quality Assurance

Key Responsibilities & Skills

• Responsive UI Development
• Reusable UI Component Architecture
• Front-End Performance Optimization
• API Integration
• Agile Development & Scrum
• Collaboration with Design & Backend Teams
• Code Review & Quality Assurance

Technical Skills

• React.js / JavaScript / TypeScript
• HTML5 / CSS3
• REST API
• Git
• CI/CD
• Jest / React Testing Library
• Azure
• Docker / Kubernetes
• GraphQL
• Micro Frontends

Education

Bachelor's Degree in Computer Science, Software Engineering, Web Development, Information Technology. Preferred: Master's in Computer Science, Master's in Software Engineering, Master's in Human-Computer Interaction.

Industry Experience

• Web Application Development
• SaaS / Cloud Applications
• Front-End Engineering
• JavaScript Ecosystem