> Markdown version of [/jobs/ext/2294966-principal-digital-factory-ux-ui-test-engineer-iv](https://www.wearedevelopers.com/jobs/ext/2294966-principal-digital-factory-ux-ui-test-engineer-iv). 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). --- # Principal Digital Factory UX/UI Test Engineer IV... - **Company:** RTX - **Location:** Andover, MA, United States - **Experience:** Expert - **Salary:** $107,500.0 - $204,500.0 - **Contract:** Permanent contract - **Skills:** Automation of Tests, Microsoft Azure, Software Bug Management, Software Documentation, Digital Technology, Design of User Interfaces, Human-Computer Interaction, Python (Programming Language), Regression Testing, Azure DevOps Pipelines, Selenium, SQL Databases, Test Case, Test Management, User Interface Testing, Website Wireframe, Playwright, Data Analytics, Figma - **Published:** August 29, 2026 - **Apply:** https://www.juju.com/job/00000000gplguw ## About the Role + Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of **8 years of prior relevant experience** unless prohibited by local laws/regulations. + **8+ years of experience in UI/UX design, front-end testing, human-machine interfaces, or digital manufacturing systems.** + **Experience designing user-centric interfaces using Figma, Ignition, or similar tools.** + **Experience in front-end testing, UX validation, and test plan development.** Qualifications We Prefer + Experience using Azure DevOps (or similar tools) for test management and defect tracking. + Proficiency with Python and SQL for lightweight automation and validation scripting. + Experience with automated UI testing tools (Selenium, Playwright, Robot Framework). + Experience establishing testing standards or leading testing initiatives in engineering organizations. + Experience with Ignition, MES systems, IIoT connectivity, or digital factory applications. + Familiarity with manufacturing workflows, operator interfaces, and plant floor digital systems. ## Description The Connected Factory Intelligence (CFI) department develops, deploys, and enhances digital factory solutions that enable modern, data-driven manufacturing. We are seeking a Principal Digital Factory UX/UI Test Engineer to serve as the UI/UX design authority and front-end test expert for our digital manufacturing applications. This role drives the creation of intuitive operator experiences, validates front-end functionality, establishes test best practices, and builds regression test automation that ensures reliable, high-quality releases. Raytheon Innovators - Advanced Manufacturing What You Will Do The Principal Digital Factory UX/UI Test Engineer leads UI/UX design, front-end testing, usability validation, and regression automation for Ignition-based applications, MES workflows, dashboards, and IIoT-enabled systems. The engineer partners with manufacturing engineers, software developers, and stakeholders to design intuitive user interfaces, validate operator workflows, prevent defects, and establish department-wide testing standards. + UI/UX Design Leadership + Lead the design of modern, intuitive UI/UX for Ignition screens, MES workflows, dashboards, and digital factory applications. + Develop wireframes, prototypes, and final layouts using tools such as Figma and Ignition Designer. + Establish consistent UX patterns, visual standards, and interaction guidelines for all CFI applications. + Collaborate closely with engineers and stakeholders to ensure designs align with operator needs and manufacturing workflows. Front-End Testing & Validation + Own the front-end testing strategy for digital factory applications across CFI. + Develop and execute structured test plans for usability, workflow accuracy, interface clarity, error-handling behavior, and navigation flow. + Validate implementation fidelity between UX designs and deployed features. + Conduct iterative UI/UX reviews and acceptance testing to prevent defects from entering production environments. Testing Standards & Department Best Practices + Define testing best practices, templates, and guidelines for software engineers and stakeholders. + Establish test case documentation standards, release readiness expectations, and UX validation processes. + Train engineers on testing fundamentals, Azure DevOps workflows, defect triage, and UI/UX acceptance criteria. + Automated Regression Testing + Build and maintain automated regression tests focused on front-end interactions, click-path validation, and navigation behavior. + Use tools such as Selenium, Playwright, or similar Python-based automation frameworks to simulate user workflows. + Integrate automated tests into Azure DevOps pipelines and ensure consistent operation before releases. ## Related Videos - [AIQSpecFlow: Improves and automates your agile process of specification and creation of testcases.](https://www.wearedevelopers.com/videos/100084-aiqspecflow-improves-and-automates-your-agile-process-of-specification-and-creation-of-testcases) - [Boost Productivity with AI: Figma & Playwright MCP Workflows - Aris Markogiannakis](https://www.wearedevelopers.com/videos/1768-boost-productivity-with-ai-figma-playwright-mcp-workflows-aris-markogiannakis) - [More efficient software for more efficient microchips](https://www.wearedevelopers.com/videos/1164-more-efficient-software-for-more-efficient-microchips) - [Proactive monitoring and smoke testing in your production environment](https://www.wearedevelopers.com/videos/139-proactive-monitoring-and-smoke-testing-in-your-production-environment) - [AI as a Test Designer: Transforming Experience into Automated Testing](https://www.wearedevelopers.com/videos/1984-ai-as-a-test-designer-transforming-experience-into-automated-testing) - [Old tools, new tricks](https://www.wearedevelopers.com/videos/1916-old-tools-new-tricks) ## Related Articles - [The 8 Best Code Testing Tools](https://www.wearedevelopers.com/magazine/402-the-8-best-code-testing-tools) - [Now is the time for industrialized software development](https://www.wearedevelopers.com/magazine/601-now-is-the-time-for-industrialized-software-development) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [Why developer experience matters](https://www.wearedevelopers.com/magazine/514-why-developer-experience-matters) - [Frontend Developer Salary in The UK](https://www.wearedevelopers.com/magazine/233-frontend-developer-salary-in-the-uk) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline)