Staff UI Frameworks Engineer - Design System & Platform

Addepar; United States; On-site; USD 150,000 - 234,000; Full time

Job summary

Addepar in the United States is seeking a Staff Software Engineer to join our Client Experience Frameworks group. You will own the UI platform, building framework-agnostic components and a scalable design system used by thousands of engineers.

You will drive adoption, set technical direction, and ensure performance and accessibility across a diverse stack. This role emphasizes architecture, mentoring, and collaboration with product teams.

Qualifications

• 5+ years of professional software engineering experience.
• Deep TypeScript expertise.
• Experience with multiple UI frameworks and web components.
• Strong knowledge of build tools and frontend tooling.
• Experience building or maintaining a design system.
• Proven track record influencing technical decisions across teams.
• Excellent written and verbal communication skills.

Responsibilities

• Design and build framework-agnostic UI components that serve product teams working across multiple frontend technologies simultaneously
• Drive adoption of the design system across the product engineering organization, consulting with teams and unblocking migration efforts
• Own end-to-end technical delivery: scoping work with stakeholders, making architecture decisions, and following through to production
• Improve developer experience through build tooling, testing infrastructure, documentation, and automation
• Make thoughtful decisions about component composition, API design, and long-term maintainability of a system used by 250+ engineers globally
• Champion performance, accessibility, and web standards as first-class concerns in everything the team ships
• Provide cross-team technical leadership through code review, consulting, and mentorship

Skills

TypeScript

UI frameworks

Web Components

Build tools

Design system

Code reviews

Mentorship

Communication

Education

B.S./M.S./Ph.D. in Computer Science

Tools

Webpack

Vite

Rollup

Job description

Addepar in the United States is seeking a Staff Software Engineer to join our Client Experience Frameworks group. You will own the UI platform, building framework-agnostic components and a scalable design system used by thousands of engineers.

You will drive adoption, set technical direction, and ensure performance and accessibility across a diverse stack. This role emphasizes architecture, mentoring, and collaboration with product teams.