Staff Frontend Engineer - Design Systems

United States Digital Space LLC; San Mateo (CA); On-site; USD 185,000 - 265,000; Full time

Benefits offered by this job

Healthcare benefits

HSA/FSA

Paid parental leave

Flexible PTO

Professional development stipend

Wellness programs

Healthy meals provided

Job summary

United States Digital Space LLC is seeking an experienced frontend engineer to join our Platform UI and Design System team, building a centralized React component library and evolving design tokens. You will bridge design and engineering, collaborate with 8+ product teams to deliver a cohesive, accessible web experience, and contribute to a large microfrontend platform.

This role emphasizes scalable UI foundations, performance, and thorough documentation to empower engineers across the

Qualifications

• 4+ years of frontend web development with focus on UI/UX.
• Expertise with React, TypeScript and modern styling solutions.
• Proven track record building design systems or UI frameworks.
• Strong tooling with component-driven development and Storybook.
• Solid knowledge of web accessibility (ARIA, WCAG).
• Design fluency with tokens, typography and responsive design.
• Bachelor's degree in CS, HCI, or related field.

Responsibilities

• Evolve the Design System: scale a centralized, React-based component library.
• Bridge Design and Engineering: translate design visions into robust components.
• Empower product engineering: mentor engineers across 8+ product teams.
• Champion Accessibility (a11y): enforce WCAG across shared components.
• Ensure UI Quality and Performance: tests and optimize rendering for SPAs.
• Drive Documentation and Tooling: maintain Storybook docs and guidelines.
• Contribute to the Broader Platform: align with microfrontend architecture.

Skills

React

TypeScript

UI/UX

CSS-in-JS

Design Systems

Storybook

Accessibility (a11y)

Education

Bachelor's in Computer Science or related field

Tools

Storybook

CSS Modules

Figma tokens

Job description

Who We Are

the company is transforming how organizations protect their people and places with an integrated, privacy-sensitive AI-powered platform that includes solutions for video security, access control, air quality sensors, alarms, intercoms, and visitor management.

We’ve got serious momentum in the market: more than 30,000 customers (including 100+ of the Fortune 500), a $5.8B valuation, more than $1 billion in annualized bookings, and backing from CapitalG, Sequoia Capital, General Catalyst, Felicis Ventures, Next47 and more. Physical AI is one of the most consequential technology shifts of our time, and the company is at the center of it.

You can look at all kinds of communities to see our platform’s impact in the world. It's the retailer that uses our agentic AI to deter theft before it happens. The warehouse that uses AI-powered alerts to make sure its team is protected on the floor with proper PPE. The school that’s alerted to a threat in real-time and triggers a lockdown in seconds, not minutes. We’re rapidly scaling this impact: today, more than 2 million the company devices are deployed across 170+ countries.

About the Role

We are actively looking for an experienced front-end engineer to join our core engineering group, with a specific focus on our Design Systems and UI architecture. As a crucial driver of our user interface, you will build, scale, and maintain the foundational component library that powers our enterprise applications. You will act as the vital bridge between Design and Engineering, partnering closely with 8+ product teams to deliver a cohesive, accessible, and beautiful web experience that supports a suite of connected devices at scale.

In this role, you will go beyond building individual features; you will help evolve the UI architecture and design tokens that ensure consistency and accelerate development. While your primary focus will be on the Platform UI and Design System, you will operate within a highly collaborative platform environment with opportunities to engage with our broader microfrontend and core infrastructure initiatives.

What You Will Do

• Evolve the Design System: Collaborate with engineering leadership to develop and scale our centralized, React-based component library, ensuring it remains highly reusable and easy to consume.

• Bridge Design and Engineering: Partner deeply with the Product Design team to translate design visions and Figma tokens into robust, pixel-perfect, and interactive web components.

• Empower product engineering: Support, collaborate with, and mentor engineers across 8+ distinct product teams, driving system adoption and helping them implement UI best practices.

• Champion Accessibility (a11y): Advocate for and implement strict accessibility standards (WCAG) across all shared components, ensuring our enterprise products are inclusive and usable by everyone.

• Ensure UI Quality and Performance: Write comprehensive automated tests (unit, visual regression) for components, and optimize UI rendering performance for complex single-page applications.

• Drive Documentation and Tooling: Maintain excellent documentation (e.g., via Storybook) and usage guidelines, making it frictionless for product teams to discover and implement components.

• Contribute to the Broader Platform: Ensure the design system integrates seamlessly into our massive microfrontend architecture, with opportunities to contribute to core frontend tooling and infrastructure as needed.

Education and Experience

• 4+ years of relevant industry experience in front-end web development with a strong focus on UI/UX.

• Expertise working with modern web technologies, specifically React, TypeScript, and modern styling solutions (e.g., CSS-in-JS, CSS Modules).

• Proven track record of building, maintaining, or significantly contributing to design systems, component libraries, or comprehensive UI frameworks.

• Tooling proficiency: Deep experience with component-driven development and documentation tools like Storybook.

• Accessibility focus: Strong, practical knowledge of web accessibility standards (ARIA, WCAG) and how to build compliant components.

• Design fluency: Experience collaborating directly with designers and a strong understanding of design tokens, typography, layout systems, and responsive design.

• Degree in Computer Science, HCI, or a similar technical/design field of study.

US Employee Benefits

the company is committed to fostering a workplace environment that prioritizes the holistic health and wellbeing of our employees and their families by offering comprehensive wellness perks, benefits, and resources. Our benefits and perks programs include, but are not limited to:

• Healthcare programs that can be tailored to meet the personal health and financial well-being needs - Premiums are 100% covered for the employee under at least one plan and 80% for family premiums under all plans

• Nationwide medical, vision and dental coverage

• Health Saving Account (HSA) with annual employer contributions and Flexible Spending Account (FSA) with tax saving options

• Expanded mental health support

• Paid parental leave policy & fertility benefits

• Time off to relax and recharge through our paid holidays, firmwide extended holidays, flexible PTO and personal sick time

• Professional development stipend

• Wellness/fitness benefits

• Healthy lunches provided daily

• Commuter benefits

Additional Information

• We do sponsor and take over sponsorship of employment visas for this role. If we make you an offer, we will make every reasonable effort to get you a visa.

Annual Pay Range

At the company, we want to attract and retain the best employees, and compensate them in a way that appropriately and fairly values their individual contribution to the company. With that in mind, we carefully consider a number of factors to determine the appropriate starting pay for an employee, including their primary work location and an assessment of a candidate's skills and experience, as well as market demands and internal parity. A the company employee may be eligible for additional forms of compensation, depending on their role, including sales incentives, discretionary bonuses, and/or equity in the company in the form of restricted stock units (RSUs)

Below is the annual on-target earnings (OTE) range for full-time employees for this position, comprised of base compensation and commissions (if applicable).

Estimated Annual Pay Range

$185,000—$265,000 USD

the company Is An Equal Opportunity Employer

As an equal opportunity employer, the company is committed to providing employment opportunities to all individuals. All applicants for positions at the company will be treated without regard to race, color, ethnicity, religion, sex, gender, gender identity and expression, sexual orientation, national origin, disability, age, marital status, veteran s