Senior Frontend Developer

About the Company:

At Sybill.ai, we're building the next evolution in B2B sales – an AI-first platform that transforms how sellers work. Think of it as an intelligent sales IDE (Integrated Deal Environment), empowering sellers to focus on what truly matters: building relationships and closing deals.

Today, sellers spend 70% of their time on non-revenue activities. We're flipping this paradigm on its head. Sybill's AI lets sellers become super-performers who guide AI systems and focus on high-impact customer interactions.

Our proprietary AI technology, developed by a small but mighty team from Stanford, Harvard, and the IITs, and backed by leading investors in Silicon Valley, is not just another tool; it serves as the foundation of a groundbreaking sales workflow that delivers exceptional outcomes for our users. With 99%+ retention and 20x growth to $1.2M ARR last year, our customers' enthusiasm speaks for itself.

Our Engineering Culture

Zero bureaucracy - direct access to customers and quick decision-making

High ownership - you'll own features end-to-end from design to deployment

Customer obsession - we build for real user needs and measure real impact

Technical excellence - we tackle hard problems and build robust solutions

Rapid shipping - we push code daily and see immediate customer impact

The Opportunity:

We are looking for an exceptional Front-End Engineer who can create extraordinary user experiences at the intersection of AI and human interaction.

You will be responsible for developing an intuitive and responsive user interface, as well as shaping and evolving the architecture of the project, which includes CI/CD pipelines, end-to-end tests, and core modules.

We stay updated with the latest advancements in front-end, back-end, and AI technologies. Our team utilizes tools like Cursor to enhance our workflow and rethink the nature of programming.

You should have a clear vision of what distinguishes high-quality, successful projects from others.

Our UI Stack

React 18

Vite

Typescript

Playwright and Vitest

React Query

Redux Toolkit

Radix UI

Technical Skills We're Looking For

>>> React & Modern Frontend

Deep expertise in React including hooks, context, modern patterns, and performance

Deep knowledge of Javascript, CSS, recently released ES, CSS, and HTML features

Strong TypeScript skills and comprehensive type system understanding

Proficiency with styled components, Framer Motion, and custom CSS implementations

Experience with component libraries like Radix UI

Experience in building custom complex UI components like Dropdowns, Autocompletes/Comboboxes, Datepickers, highly interactive tables, etc.

Understanding of good practices for state management and API fetching, knowledge of popular libraries like Redux, Zustand, React Query

Knowledge of good testing practices

>>> AI-UX Integration

Experience building interfaces for AI/ML products

Understanding of streaming responses and real-time updates

Background in handling async operations and loading states gracefully

Qualifications:

BS/MS in Computer Science from a top US university

5+ years of hands-on frontend development experience

Previous experience at an AI-first startup is highly preferred

Strong eye for design and attention to detail

Available to work 4+ days/week in Mountain View

What Sets You Apart

Track record of building 0 1 products in the AI space

Strong product intuition and user-centric thinking

Demonstrated passion for coding and JS technologies

History of creating novel interaction patterns

Open source contributions to FE ecosystem

What We Offer:

Competitive compensation: $155,000 - $185,000 + significant equity

Modern React-based frontend stack with a focus on developer experience

Direct impact on product direction and user experience

Regular UI/UX deep dives and technical discussions

Comprehensive health, dental, vision benefits and flexible time off

If you're passionate about creating exceptional user experiences and want to work at the cutting edge of AI interfaces, we'd love to talk to you.

Note: We're looking for someone who combines technical excellence with an eye for detail and has experience shipping polished AI products.