Senior Frontend Application Developer

Newlineinfo Corp - IT Services and IT Consulting; Newport Beach (CA); On-site; USD 140,000 - 190,000; Full time

Job summary

Newlineinfo Corp - IT Services and IT Consulting in Newport Beach, CA seeks a Sr Frontend Application Developer for an onsite role. You will build and maintain web apps using React and Angular, focusing on responsive, accessible UIs and API integration.

You will mentor juniors, drive frontend best practices, performance, and modernization, and collaborate with cross-functional teams in a fast-paced environment, leveraging AI-assisted tools to boost delivery.

Qualifications

• 10+ years of front-end development experience.
• Strong expertise in React and Angular.
• REST API integration and UI performance focus.
• Experience with Azure, Git, CI/CD, and Agile practices.

Responsibilities

• Develop and maintain web apps using React and Angular.
• Build responsive, accessible, and high-performance user interfaces.
• Integrate frontend applications with REST APIs and enterprise services.
• Collaborate with product owners, designers, architects, and developers to deliver high-quality solutions.
• Drive frontend best practices, performance optimization, and application modernization.
• Leverage GitHub Copilot, Claude Code and similar AI tools to improve productivity.
• Mentor junior developers and contribute to technical excellence.

Skills

Frontend development

React

Angular

HTML5/CSS3

REST API integration

Azure

Git

CI/CD

Agile

Communication

Tools

GitHub Copilot

Claude Code

Job description

Job Title: Sr Frontend Application Developer

Location: Newport Beach, CA (Onsite Role all 5 days)

Key Responsibilities

• Develop and maintain web applications using React and Angular.
• Build responsive, accessible, and high-performance user interfaces.
• Integrate frontend applications with REST APIs and enterprise services.
• Collaborate with product owners, designers, architects, and developers to deliver high-quality solutions.
• Drive frontend best practices, performance optimization, and application modernization.
• Leverage GitHub Copilot, Claude Code and similar AI tools to improve productivity.
• Mentor junior developers and contribute to technical excellence.

Required Skills

10+ years of front-end application development experience.

Strong expertise in:

• React
• Angular
• HTML5, CSS3
• REST API integration
• Experience with Azure, Git, CI/CD, and Agile development practices.
• Strong problem-solving, communication, and collaboration skills.
• Independent, proactive thinker with the ability to work effectively in a fast-paced environment and drive solutions with minimal supervision.
• Experience using AI-assisted development tools in software delivery.

Preferred Skills

• Experience with Tailwind CSS, shadcn/ui, Fluent UI, or Material UI.
• Knowledge of front-end performance, accessibility, and security best practices.