> Markdown version of [/jobs/ext/2077694-senior-software-engineer-front-end-react](https://www.wearedevelopers.com/jobs/ext/2077694-senior-software-engineer-front-end-react). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Software Engineer, Front-End (React) - **Company:** Medallia - **Location:** McLean, VA, United States - **Experience:** Expert - **Salary:** $135,000.0 - $210,000.0 - **Contract:** Permanent contract - **Skills:** Clean Code Principles, JavaScript (Programming Language), HTML5, Automation of Tests, Backbone.Js, Cascading Style Sheets (CSS), Software Quality, Code Review, Software Design Documents, Software Design Patterns, Node.Js, Open Web Application Security, Performance Tuning, Software Architecture, Software Maintenance, Mockito, Web Application Security, Session Management, Software Engineering, TypeScript, Web Applications, Web Performance Optimization, Web Standards, Data Processing, Data Storage Technologies, ReactJS, Backend, AngularJS, Integration Tests, Information Technology, Codebase, Front End Software Development, React Testing Library, Es2015, Microservices - **Published:** August 16, 2026 - **Apply:** https://diversityjobs.com/main/sendform/8/8/28176/1/17971348?backUrl=%2Fcareer%2F17971348%2FSenior-Software-Engineer-Front-End-React-Virginia-Mclean ## About the Role * Must reside in the United States and be legally authorized to work in the US without sponsorship. * 6+ years of professional experience developing, shipping, and maintaining complex, high-performance web applications in production. * 3+ years of hands-on experience building applications using React and its ecosystem. * TypeScript & Modern Web Standards: Professional experience building typed web applications in Typescript (ES6+), utilizing semantic HTML5 and modern styling methodologies (e.g., CSS-in-JS, CSS Modules, or utility-first CSS). * Automated Testing & QA: Hands-on experience with unit and integration tests using frameworks such as Jest or React Testing Library, including experience with mocking and automated test pipelines. * Software Architecture: Experience designing modular front-end architectures and applying software design patterns. * Technical Communication: Experience authoring technical design documentation and presenting technical concepts to both technical and non-technical stakeholders., * Experience building or maintaining software within FedRAMP, SOC 2, HIPAA, or other highly regulated compliance frameworks. * Migration Experience: Proven experience successfully migrating large-scale legacy codebases (ideally from BackboneJS, AngularJS, or similar) to modern React. * Strong backend familiarity, particularly with NodeJS and microservices architecture. Familiarity with web security best practices (OWASP Top 10, secure session management, CSP, dependency scanning). * BSc/MSc in Computer Science, Software Engineering, or equivalent practical experience. ## Description You will be a senior technical leader within the team responsible for developing, scaling, and maintaining the DXA(Digital Experience Analytics) reporting tool. A primary focus of this role will be driving the strategic migration of the DXA portal from our legacy Backbone framework to our modern, Alchemy-based React framework. Additionally, you will help architect and manage the Node.js-based microservices that power the DXA portal. As our team actively works toward achieving FedRAMP compliance for our reporting platform, you will play a critical role in aligning our frontend architecture, data handling, and security practices with federal compliance standards. As a senior member of the team, you will not only write high-quality code but also establish best practices, mentor other developers, and collaborate closely with product and design teams to shape our technical roadmap., As a Senior Front-End Engineer, you will own all aspects of the software development lifecycle, with an emphasis on architecture, quality, security, and leadership: * Architect & Scale: Design and implement robust, reusable web architectures, state management systems, and client-side algorithms for the DXA portal. * Drive Migration: Take a leading role in successfully transitioning legacy Backbone codebases into a modern, performance-optimized React/Alchemy architecture. * Security & Compliance: Collaborate with security and engineering teams to ensure frontend interfaces, data storage, network calls, and authentication flows meet FedRAMP compliance requirements and federal security standards. Technical Leadership & Mentorship: Guide, mentor, and perform constructive code reviews for junior and mid-level engineers to elevate the team's technical capabilities. * End-to-End Ownership: Partner with product managers and designers to translate complex requirements into scalable technical designs, owning projects from concept through to deployment. * Quality & Best Practices: Champion code quality, performance optimization, accessibility (a11y), security hardening, and comprehensive testing strategies (unit, integration, and end-to-end) Candidates based in the Tysons vicinity will be prioritized as this role is Hybrid, 3 days per week onsite. ## Related Videos - [The Pragmatic Architect: Balancing Necessity vs. Sufficiency in React Systems](https://www.wearedevelopers.com/videos/2101-the-pragmatic-architect-balancing-necessity-vs-sufficiency-in-react-systems) - [Test-Driven Development: It's easier than you think!](https://www.wearedevelopers.com/videos/1598-test-driven-development-it-s-easier-than-you-think) - [The Resilience of the World Wide Web](https://www.wearedevelopers.com/videos/1281-the-resilience-of-the-world-wide-web) - [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) - [ChatGPT and Java: A Match Made in Heaven or Hell?](https://www.wearedevelopers.com/videos/536-chatgpt-and-java-a-match-made-in-heaven-or-hell) - [Can SVG be fast? 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