Frontend Engineer II

About Cascade AI

Cascade AI helps HR organizations transform how they operate with AI agents that automate critical HR functions, including support, open enrollment, onboarding, leave of absence, compensation, and more.

Our agents do far more than provide answers. They execute processes and workflows, streamline HR operations, and deliver employees the help they need instantly and conversationally. By combining Large Language Models (LLMs) with an organization's existing HR technology stack, Cascade agents streamline operations, improve employee experience, and unlock significant cost savings.

Cascade is deployed globally, with users on every continent, and supports multi-lingual work forces. We are proudly backed by Gradient Ventures, Google's AI fund, and trusted by Fortune 100 companies and leading enterprises, many of whom sign multi-year contracts. Founded by two former Microsoft engineers through the MIT Sandbox Innovation program, Cascade is now one of the fastest-growing AI companies in HR technology.

We have an exceptional advising team, including industry leaders such as the former VP of People Ops at Google and former CHRO of Airbnb.

If you like to work at the intersection of AI and cloud, collaborate across the organization, and thrive in a fast-paced startup environment, this role could be a great fit. Everyone joining at this stage will wear multiple hats and work across the product surface.

As a Frontend Engineer II at Cascade, you will design and build the user interfaces that power our AI agent platform for HR automation. You'll shape how employees interact with agents that automate processes like onboarding, open enrollment, leave, and termination— and how HR teams configure, monitor, and scale those agents across the enterprise.

This is a hands-on role where you'll ship production code weekly, take ownership of meaningful product surfaces, and help define how AI agents come to life for tens of thousands of users. You'll work across component systems, application architecture, and real-time interactions, turning product and design intent into polished, performant experiences.

This role is ideal for engineers who enjoy moving fast without cutting corners, care deeply about craft and usability, and want to build interfaces that make complex AI capabilities feel simple and intuitive.

• This is a mid-level frontend engineering role
  .
• This role reports directly to Cascade's Chief Technical Officer (CTO).

This is a hybrid role based in Bellevue, WA
. Candidates in the Greater Seattle area who can commute to our Bellevue office are welcome to apply. We expect team members to work from our office four days per week to foster collaboration, accelerate learning, and build strong team cohesion. In-person time is critical for early-stage engineers to grow quickly, get real-time feedback, and stay aligned with the team.

• Salary range: $130k–$150k base
  , depending on experience.
• Equity:
  meaningful stock options so you share in Cascade's upside.
• Benefits:
• Competitive health coverage.
• Unlimited PTO, with an emphasis on taking time off to recharge.

• We are not able to sponsor visas for this role at this time.
• Candidates must be eligible to work in the United States.

You don't need to have used all of these, but you should be excited to work in an environment that looks like this:

• Frontend frameworks: React with Type Script, built on Vite.
• Styling & components: SCSS Modules, a shared component library (Storybook for development and documentation).
• State & data: Tan Stack Query for server state, React Router for navigation.
• Testing: Vitest, with a focus on behavior-driven coverage.
• AI & orchestration: LLM-powered conversational interfaces and real-time agent interactions.
• Plus integrations with enterprise HRIS, communication, and workflow tools.

• Design and develop frontend experiences in React for both employees (AI agent interactions) and HR teams (dashboards, workflow automation tools, analytics).
• Build scalable, responsive, and accessible UIs that support global enterprise…