About Hyper

Hyper builds voice AI agents for any use case. Businesses use our no-code platform to create agents that handle inbound and outbound calls in 70+ languages, hand off to a human in real time, and connect to their systems through our API.

We are a Google for Startups company and a Meta ISV partner, with paying customers. We are an early stage startup, and you will work directly with the founders.

Our office is in Afula, next to a small forest.

Role Description

We are looking for a freelance Front End Engineer to work with us on our platform.

You will design, build and improve the interfaces our customers use every day to create, manage and monitor their voice agents. That includes our visual no-code agent builder, built on ReactFlow, along with dashboards, call analytics and settings across the platform.

Our users are business owners without technical backgrounds, so making complex AI workflows feel simple and intuitive is at the heart of this work.

This is a freelance position with flexible hours, working directly with the founders on clearly defined tasks and features.

What you will work on:

- Build intuitive, responsive and high performance user interfaces

- Develop and improve our ReactFlow based visual agent builder

- Build dashboards and data views for calls, analytics and agent performance

- Manage complex client state and server data with Zustand and TanStack Query

- Build robust forms and validation with TanStack Form and Zod

- Integrate with backend APIs and real-time services

- Optimize performance and ensure a great experience across all devices and screen sizes

- Write clean, tested and well documented code

Qualifications (MUST)

- 2+ years of frontend development experience delivering production web applications

- Strong expertise in React, TypeScript and SCSS

- Hands on experience with ReactFlow, TanStack Query, TanStack Form, Zustand, Zod and Floating UI

- Strong experience with responsive web design, optimized for all devices

- Experience integrating REST APIs and working closely with backend services

- Strong eye for UI details and user experience

- Comfortable with Git and code reviews

- Able to work independently, manage your own time and deliver on schedule

- Available for a steady weekly commitment

Nice to have

- Previous freelance or contract experience with startups

- Experience building visual editors, node based UIs or workflow builders

- Experience with real-time UIs and WebSockets

- Experience with AI, voice or SaaS products

- Experience with RTL and multi language interfaces (Hebrew, Arabic)