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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Principal Software Engineer, UX - Asset Management Technology Foundations - **Company:** Fmr LLC - **Location:** Boston, MA, United States - **Experience:** Expert - **Salary:** $107,000.0 - $216,000.0 - **Contract:** Permanent contract - **Skills:** Artificial Intelligence, HTML5, Cascading Style Sheets (CSS), Code Generation, Design of User Interfaces, Human-Computer Interaction, Interaction Design, Ui Patterns, TypeScript, Web Content Accessibility Guidelines, Modern Ui, Ios Frameworks, Material UI, Information Technology, Figma, Api Design - **Published:** June 4, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=bc91922ce5cfb187 ## About the Role Do you have experience in UI design systems?, Do you have a Bachelor's degree?, * Bachelor's degree in human-Computer Interaction, Interaction Design, Computer Science, or a related field (advanced degree preferred). * Extensive experience building and scaling enterprise design systems (tokens, theming, component libraries, governance). * Proven ability to translate UX design into reusable, systemized engineering assets adopted across large ecosystems. * Hands-on experience with component ecosystems such as PrimeNG or equivalent UI libraries. * Deep expertise with Figma and modern design-to-development workflows. * Experience driving UX consistency across multi-application platforms - Desktop, Web and Mobile. * Experience with desktop interoperability platforms and standards, including FDC3, and related interop products, enabling application composition, context sharing, and cross-application workflows would be a plus. * Exposure to AI-enabled UX patterns, such as: + Context-aware interfaces + Intelligent workflows + Personalization and adaptive UI * Ability to influence UX standards, design system adoption, and platform direction at scale. * Strong proficiency in HTML5, CSS3, and TypeScript, with deep expertise in building scalable, maintainable UI systems. * Hands-on experience developing and maintaining: + Design token systems + Reusable UI components and patterns + Theming and styling architectures * Experience working with and extending component frameworks (e.g., PrimeNG) to align with enterprise UX standards. * Strong understanding of accessibility (WCAG) and inclusive design practices. * Ability to ensure visual and interaction consistency across diverse applications. * Experience collaborating closely with designers to ensure fidelity between design and implementation. * Ability to create prototypes, interaction patterns, and UX validations as needed. * Familiarity with integrating AI tooling into the design system lifecycle, including: + AI-assisted design generation (e.g., Figma AI, Copilot) + Code generation and UI scaffolding + Automated UX validation and accessibility checks * Understanding of API-driven UI integration and shared platform services. * Strong focus on performance, usability, and design quality ## Description We are seeking a Principal Engineer specializing in UX Design Systems to lead the architecture, quality, and adoption of enterprise design system. This is a senior hands-on technical role with a strong UX bar. You will be responsible for translating user experience principles into scalable, reusable, and accessible design system assets-including design tokens, component libraries (e.g., PrimeNG-based), theming frameworks, and UX standards. You will work at the intersection of UX design and engineering, ensuring that the design system is both user-centered and production-ready, enabling teams to deliver consistent, high-quality experiences across a complex application ecosystem., Architecture and Technology Foundation (ATF) team is a central team within Asset Management that provides ready-to-use solutions composed of standard technology stacks, development frameworks, reusable software components and services. As a member of the team, you will work on Integrated Experience Platform capabilities - web and desktop experience platforms, design systems, shared component libraries and core UI frameworks that power applications across Asset Management. ## Related Videos - [WeAreDevelopers LIVE - Performance and AI?, Social Media decline, Developer Events and more](https://www.wearedevelopers.com/videos/1340-wearedevelopers-live-performance-and-ai-social-media-decline-developer-events-and-more) - [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) - [UX is a fullstack job!](https://www.wearedevelopers.com/videos/1020-ux-is-a-fullstack-job) - [The Resilience of the World Wide Web](https://www.wearedevelopers.com/videos/1281-the-resilience-of-the-world-wide-web) - [Bridging the Gap](https://www.wearedevelopers.com/videos/794-bridging-the-gap) - [Fireside Chat with Kris Rasmussen, CTO at Figma](https://www.wearedevelopers.com/videos/982-fireside-chat-with-kris-rasmussen-cto-at-figma) ## Related Articles - [16 Best Free React UI Libraries in 2025](https://www.wearedevelopers.com/magazine/148-16-best-free-react-ui-libraries-in-2025) - [The future is here: How artificial intelligence is influencing UX design](https://www.wearedevelopers.com/magazine/65-the-future-is-here-how-artificial-intelligence-is-influencing-ux-design) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Dev Digest 133 - Back to Front](https://www.wearedevelopers.com/magazine/474-dev-digest-133-back-to-front) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [10 Essential Figma Plugins for Frontend Developers in 2023](https://www.wearedevelopers.com/magazine/262-10-essential-figma-plugins-for-frontend-developers-in-2023)