Application Engineer - III

Vanguard; Malvern (Chester County); Hybrid; USD 110,000 - 160,000; Full time

Job summary

Vanguard in Malvern, PA seeks an Application Engineer III to own full-stack development across frontend (React, Lit, Stencil) and Node.js services, AWS backend and AEM integration, delivering accessible, high‑performance digital experiences.

You will build reusable UI components and design-system implementations, develop AEM Sites architectures, APIs, tests, and deployments, and collaborate on architecture, reviews, production support, and mentoring in a hybrid work model.

Qualifications

• Bachelor’s degree in Computer Science or related field or equivalent practical experience.
• 5–7+ years of full-stack engineering with modern JavaScript and AEM development.
• Strong proficiency in JavaScript, TypeScript, HTML, CSS, and React, Lit, Stencil, or Web Components.
• Hands-on experience with Node.js, npm, Express, API design, and secure server-side development.
• Proven AEM Sites experience with components, templates, Sling Models, OSGi, HTL, authoring, and integrations.
• Hands-on AWS experience building and operating backend and event-driven solutions using Lambda, S3, ECS, API Gateway, and EventBridge, including security, observability, scalability, and CI/CD.
• Strong collaboration, communication, code-review, and problem-solving skills.
• Familiarity with AI-assisted development tools such as GitHub Copilot or Claude Code.

Responsibilities

• Build accessible, high-performance web experiences using JavaScript, TypeScript, React, Lit, Stencil, Web Components, HTML, and CSS.
• Create reusable UI components and design-system implementations for standalone applications and AEM-managed experiences.
• Develop Node.js and Express services, middleware, and REST or GraphQL integrations; manage builds and packages with npm.
• Deliver AEM Sites solutions using components, templates, Sling Models, OSGi services, HTL, content models, and APIs.
• Integrate modern UI frameworks with AEM headful, hybrid, and API-driven architectures.
• Implement automated testing, CI/CD, security, observability, and performance optimization across the full stack.
• Collaborate on architecture, code reviews, production support, mentoring, and engineering standards.

Skills

Collaboration

Communication

Code reviews

Problem solving

Education

Bachelor's degree in Computer Science or related field

Tools

JavaScript

TypeScript

React

Lit

Stencil

Web Components

HTML

CSS

Node.js

Express

API design

AWS

AEM Sites

CI/CD

Jest

Job description

We’re seeking an Application Engineer III to join our dynamic team. This is a balanced full-stack engineering role spanning modern frontend development, Node.js services, AWS backend and event-driven solutions, and Adobe Experience Manager (AEM). You will design and deliver accessible, high-performance digital experiences using JavaScript and TypeScript frameworks, including Lit, React or Stencil, alongside Node.js, npm, Express, and AWS services such as Lambda, S3, ECS, API Gateway, and Amazon EventBridge, while contributing equally to AEM Sites architecture, component development, integrations, testing, deployment, and production operations.

Core Responsibilities

• Build accessible, high-performance web experiences using JavaScript, TypeScript, React, Lit, Stencil, Web Components, HTML, and CSS.
• Create reusable UI components and design-system implementations for standalone applications and AEM-managed experiences.
• Develop Node.js and Express services, middleware, and REST or GraphQL integrations; manage builds and packages with npm.
• Deliver AEM Sites solutions using components, templates, Sling Models, OSGi services, HTL, content models, and APIs.
• Integrate modern UI frameworks with AEM headful, hybrid, and API-driven architectures.
• Implement automated testing, CI/CD, security, observability, and performance optimization across the full stack.
• Collaborate on architecture, code reviews, production support, mentoring, and engineering standards.

Qualifications

• Bachelor’s degree in Computer Science or a related field, or equivalent practical experience.
• 5–7+ years of full-stack engineering experience across modern JavaScript and AEM development.
• Strong proficiency in JavaScript, TypeScript, HTML, CSS, and React, Lit, Stencil, or Web Components.
• Hands-on experience with Node.js, npm, Express, API design, and secure server-side development.
• Proven AEM Sites experience with components, templates, Sling Models, OSGi, HTL, authoring, and integrations.
• Hands-on AWS experience building and operating backend and event-driven solutions using Lambda, S3, ECS, API Gateway, and Amazon EventBridge, including security, observability, scalability, and CI/CD.
• Strong collaboration, communication, code-review, and problem-solving skills.
• Familiarity with AI-assisted development tools such as GitHub Copilot or Claude Code.

Nice to Have

• Experience integrating Lit Web Components with AEM.
• Experience with AEM as a Cloud Service, Core Components, Adobe Client Data Layer, Web SDK, Target, or Experience Platform.
• Experience with Jest, Vitest, React Testing Library, Playwright, Cypress, or similar tools.
• Professional certification in AWS, AEM and/or any other relevant tech stack.

Sponsorship

Vanguard is not offering visa sponsorship for this position.

About Vanguard

At Vanguard, we don't just have a mission—we're on a mission. To work for the long-term financial wellbeing of our clients. To lead through product and services that transform our clients' lives. To learn and develop our skills as individuals and as a team. From Malvern to Melbourne, our mission drives us forward and inspires us to be our best.

How We Work

Vanguard has implemented a hybrid working model for the majority of our crew members, designed to capture the benefits of enhanced flexibility while enabling in-person learning, collaboration, and connection. We believe our mission-driven and highly collaborative culture is a critical enabler to support long-term client outcomes and enrich the employee experience.