About the company and product

Australian startup building a messenger-style application where users interact with trained AI assistants. Prototype and backend are in place, frontend is being prepared for public use. Core platform runs on Google Cloud Platform with Dialogflow CX and Cloud Functions. Team is small and international. Early-stage startup, ~6 people, founder is a Ukrainian, senior engineer with 40 years in IT.

Role overview

You will own the frontend. First, polish an existing JS-based prototype and convert it into a production React application. Next, extend the app and later help deliver a React Native mobile client. The UI should feel modern and responsive with strong attention to conversational UX, voice I/O, and smooth micro-interactions.

You will work directly with a technical founder. The role is full-time, remote, with overlap between Europe and Australia time zones.

Responsibilities

• Refactor and consolidate current JS files into a modular React application.
• Set up project structure, linting, formatting, basic test coverage, and CI friendly build scripts.
• Build polished UI interactions and animations, optimize rendering performance.
• Implement chat and conversation flows with AI agents, including context and state handling.
• Integrate voice features, text-to-speech, speech-to-text using browser APIs and Google voices.
• Connect the frontend to Google Cloud Functions, handle auth, routing, and API errors.
• Ensure accessibility, responsive layouts, and cross-browser compatibility.
• Use modern AI coding tools productively (GPT, Gemini, Claude) while maintaining code quality.
• Collaborate on requirements, break work into deliverables, and ship iteratively.
• Interest in agentic AI, marketplaces and web3 concepts.

Required skills

• 3+ years building SPAs with React and modern JavaScript or TypeScript.
• Strong state management patterns (React hooks, context, or a store like Redux/Zustand).
• API integration experience, including auth flows and async data handling.
• Styling with CSS or a utility/CSS-in-JS approach, and comfort designing clean UI components.
• Experience with animations and micro-interactions using React-friendly libraries
• Working knowledge of browser audio APIs, TTS/STT integration, or willingness to learn quickly.
• Practical use of AI coding assistants and ability to validate and refactor generated code.
• Clear written and spoken English, ability to work independently in a startup setting.

Nice to have

• React Native and experience with mobile app development.
• Testing tools such as Jest, React Testing Library, or Playwright.

Schedule: Mon – Fri  9am - 5pm AEDT (Australian Eastern Daylight Time). Minimum 4 hours overlap.