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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Full Stack Application Engineer III - Workplace Tech B2B - **Company:** Vanguard - **Location:** Malvern, PA, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Clean Code Principles, JavaScript (Programming Language), Artificial Intelligence, Applications Architecture, Software Applications, Automation of Tests, Cloud Computing, Software Quality, Code Review, Cyber Security, Databases, Continuous Delivery, Continuous Integration, Relational Databases, Software Debugging, Identity and Access Management, Systems Analysis, OAuth, Openid Connect, Software Tools, Security Assertion Markup Language (SAML), Secure Coding, Single Sign-On, Software Deployment, Software Engineering, Systems Integration, TypeScript, Web Applications, Enterprise Software Applications, ReactJS, Git, Information Technology, Restful APIs, Microservices - **Published:** September 5, 2026 - **Apply:** http://www.vanguardjobs.com/job/23724667/full-stack-application-engineer-iii-workplace-tech-b2b-malvern-pa/?utm_medium=%22mcloud%2Djobads%22&utm_campaign=Technology&utm_content=Full%20Stack%20Application%20Engineer%20III%20%2D%20Workplace%20Tech%20B2B&utm_term=179797 ## About the Role * Minimum of 5 years of related work experience, including significant hands-on application development experience supporting complex enterprise applications. * Bachelor's degree or equivalent combination of training and experience. * Strong understanding of software development methodologies and application architecture principles. * Experience analyzing, developing, testing, and supporting enterprise applications. * Strong problem-solving, communication, and collaboration skills. * Ability to work effectively across business and technology teams. Required technical skills * Hands-on experience developing modern web applications using React and/or JavaScript or TypeScript. * Experience designing and integrating REST APIs, microservices, and third-party solutions. * Experience with Git, continuous integration and continuous delivery pipelines, automated testing, code scanning, and secure coding practices. * Experience supporting enterprise applications in production, including monitoring, troubleshooting, performance, resiliency, and incident resolution. * Working knowledge of relational databases, application architecture, and cloud or enterprise hosting environments. Preferred technical skills * Experience with identity and access management technologies and standards, including single sign-on, OAuth 2.0, OpenID Connect, or SAML. * Experience applying AI-enabled engineering tools and practices to improve development speed, code quality, testing, and documentation. ## Description * Perform senior-level systems analysis, design, development, testing, and implementation of applications and databases. * Develop and enhance complex applications and integrate third-party products and solutions. * Translate business and technical requirements into scalable, maintainable code. * Design, develop, test, debug, and support software applications using automated build, test, deployment, and quality practices. * Deploy code to development, test, and production environments and provide ongoing production support. * Submit and document change control requests and ensure compliance with established processes. * Lead and participate in system design reviews, code reviews, and testing activities throughout the development lifecycle, ensuring solutions meet architecture, security, quality, and maintainability standards. * Analyze and resolve complex technical issues and provide guidance on best practices. * Mentor and support less experienced team members. * Collaborate with cross-functional partners to understand business needs and deliver technology solutions that meet those needs. * Communicate technical concepts and systems issues effectively to both technical and non-technical audiences. * Ensure compliance with Information Technology and Information Security policies, standards, and procedures. * Participate in special projects and perform other duties as assigned. ## Related Videos - [Watch Tests Go Brrrr! : Getting Started with Cypress in ReactJS](https://www.wearedevelopers.com/videos/282-watch-tests-go-brrrr-getting-started-with-cypress-in-reactjs) - [Keeping applications secure by evolving OAuth 2.0 and OpenID Connect](https://www.wearedevelopers.com/videos/100152-keeping-applications-secure-by-evolving-oauth-2-0-and-openid-connect) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Navigating the Corporate Jungle: Life as a Developer in a large Company](https://www.wearedevelopers.com/videos/621-navigating-the-corporate-jungle-life-as-a-developer-in-a-large-company) - [Delay the AI Overlords: How OAuth and OpenFGA Can Keep Your AI Agents from Going Rogue](https://www.wearedevelopers.com/videos/1637-delay-the-ai-overlords-how-oauth-and-openfga-can-keep-your-ai-agents-from-going-rogue) - [Build and Deploy a Fullstack App with Open Source Tooling](https://www.wearedevelopers.com/videos/775-build-and-deploy-a-fullstack-app-with-open-source-tooling) ## Related Articles - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Where to Find Entry-Level Software Engineering Jobs](https://www.wearedevelopers.com/magazine/397-where-to-find-entry-level-software-engineering-jobs) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers)