Principal Software Engineer, UX - Asset Management Technology Foundations

Job Description:

Principal Software Engineer, UX - Asset Management Technology Foundations

Note: Fidelity will not provide immigration sponsorship for this position.

The Role

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.

The Expertise & Skills You Bring

• 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

• 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