Senior Frontend Engineer

American Express

. Design and build scalable, secure, accessible, and high-performance user interfaces across traditional and AI-powered applications .

Posted 11/12/2026full-timePhoenix • Arizona • United StatesSenior💰 $123,000 - $215,250 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in building scalable, high-performance user interfaces with a strong focus on AI-driven applications and modern frontend technologies. Proficient in developing reusable UI components and design systems while ensuring accessibility and performance optimization.

Highest-signal resume keywords

HTML ProficiencyJavaScript ExpertiseReact DevelopmentAI-Driven Interaction DesignFrontend Architecture

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

CSSTypeScriptNextJSTailwind CSSSassLessAsynchronous UI PatternsPerformance OptimizationAutomated TestingMicro-Frontend Architecture

Soft Skills

Excellent CommunicationCollaborationTechnical Leadership

Tools & Technologies

GitHub CopilotJenkinsGitCI/CD PipelinesDockerKubernetesFigmaViteWebpackNpm

Industry Keywords

AI-Powered ApplicationsUser ExperienceAgile EnvironmentDesign SystemsHuman-in-the-Loop Interaction

Tech Stack

Tools & technologies

CypressDockerJavaScriptJenkinsJestKubernetesNext.jsReactSCSSTypeScriptWebpackYarn

About the role

Key responsibilities & impact

Design and build scalable, secure, accessible, and high-performance user interfaces across traditional and AI-powered applications
Own end-to-end development of modern UI experiences from architecture and implementation through testing, deployment, and continuous improvement
Build AI-driven and agentic experiences, including conversational, copilot-style, intent-driven, streaming, and human-in-the-loop interactions
Partner with product, design, AI/ML, backend, and platform teams to translate business and user needs into cohesive digital experiences
Develop and evolve reusable UI components, design systems, and modular frontend architectures
Prototype, experiment, and iterate on new capabilities and interaction patterns, translating successful concepts into production-ready solutions
Continuously learn and adapt to evolving technologies, frameworks, AI capabilities, and UI paradigms
Champion clean, maintainable, well-tested code, code reviews, performance optimization, accessibility, security, and continuous refactoring
Apply product and UX judgment using user research, prototypes, experimentation, analytics, and feedback
Drive performance, reliability, and quality through testing, observability, telemetry, and measurement of traditional and AI-powered experiences
Drive innovation and technical direction by evaluating emerging technologies and influencing frontend engineering standards
Demonstrate ownership and autonomy while driving complex initiatives from concept through production

Requirements

What you’ll need

Associates or BS degree in Computer Science, Information Systems, or another related field, or equivalent 5+ years of work experience
8+ years of experience with strong focus on frontend or full-stack technology
Strong proficiency in HTML, CSS, JavaScript, TypeScript, React, and NextJS
Experience building accessible, responsive, high-performance web applications
Experience with modern frontend styling approaches and frameworks, such as Tailwind CSS, Sass, Less, or CSS Modules
Experience designing and building reusable UI components, design systems, and composable frontend platforms
Deep expertise in modern frontend architecture and engineering, including state management, asynchronous and reactive UI patterns, performance optimization, rendering strategies, and micro-frontend or modular/composable UI architectures
Hands-on experience building GenAI and/or agentic applications powered by LLMs, AI agents, or multi-step AI workflows
Experience designing AI-driven interaction patterns, including conversational interfaces, copilot-style assistance, command- or intent-driven interactions, and dynamically generated or adaptive user experiences
Strong understanding of prompt engineering, context management, conversation/session state, tool invocation, and streaming response UX
Experience building real-time and streaming user experiences, incremental rendering, asynchronous state updates, optimistic UI, and event-driven interactions
Understanding of human-in-the-loop interaction patterns, feedback mechanisms, user control, AI transparency, and explainability principles
Experience defining and instrumenting AI/agentic UX metrics
Ability to communicate agent state and activity, including planning, progress, tool execution, confirmations, errors, and completion states
Experience implementing guardrails and user controls for AI-powered experiences
Experience with automated unit, integration, component, and end-to-end testing using Jest, Vitest, Cypress, Playwright, or similar
Experience with modern frontend build systems, package management, and developer tooling such as Vite, Webpack, npm, pnpm, or yarn
Familiarity with Figma and translating design systems and prototypes into production-quality experiences
Proficiency with AI-assisted software development tools such as GitHub Copilot, Claude Code, Cursor, or Gemini Code Assist
Hands-on experience with Git, CI/CD pipelines, secrets management, Jenkins, GitHub Actions, or equivalent tools
Familiarity with Docker and Kubernetes is a plus
Browser extension and/or mobile application development experience is a plus
Portfolio, GitHub profile, or previous work examples are preferred
Ability to operate effectively in an Agile, cross-functional environment and adapt to evolving technologies and priorities
Excellent communication, collaboration, and technical leadership skills
Visa sponsorship may be provided for certain positions depending on business requirements, role, cost, and applicable laws

Benefits

Comp & perks

Competitive base salaries
Bonus incentives
6% Company Match on retirement savings plan
Free financial coaching and financial well-being support
Comprehensive medical, dental, vision, life insurance, and disability benefits
Flexible working model with hybrid, onsite or virtual arrangements depending on role and business need
20+ weeks paid parental leave for all parents, regardless of gender, offered for pregnancy, adoption or surrogacy
Free access to global on-site wellness centers staffed with nurses and doctors (depending on location)
Free and confidential counseling support through our Healthy Minds program
Career development and training opportunities