Sr Front-end Engineer (ReactJS/ Javascript/ Typecript)

Brarista; United States; Remote; USD 90,000 - 150,000; Full time

Job summary

Join a forward-thinking startup on a mission to revolutionize online shopping with AI. As a Senior Front End Engineer, you'll develop and maintain user interfaces for an innovative chatbot platform. This role offers the chance to work on cutting-edge technology, collaborating closely with designers and backend engineers. You'll be part of a dynamic team, shaping the future of e-commerce through engaging quiz experiences and seamless integrations. If you're passionate about building high-performance applications and thrive in a flexible, startup environment, this is the perfect opportunity for you.

Qualifications

• Expert knowledge of React and modern JavaScript features.
• Experience with e-commerce API integrations and Firebase.

Responsibilities

• Design and maintain reusable UI components for our React application.
• Implement interactive quiz experiences within our chatbot.

Skills

React

JavaScript

TypeScript

WebSockets

RESTful APIs

Firebase

Google Analytics

A/B Testing

Tools

Webpack

Babel

Jest

React Testing Library

Job description

Finding the perfect shopping experience online can be frustrating. We're on a mission to change that with our AI-powered chatbot that provides quiz functionality and seamless e-commerce integration. As a funded AI startup, we're looking for a Senior Front End Engineer to help us build the future of AI-powered shopping.

Position Overview

We're looking for an experienced Senior Front End Engineer to join our team working on our cutting-edge AI chatbot platform. You'll be responsible for developing and maintaining our MVP user interfaces for our conversational AI product, with a specific focus on quiz functionality and e-commerce integrations.

You will be the person scaling up our solution from its Proof-of-concept days into a fully scalable solution.

→ One year contract with a likelihood of extension. We’re not sponsoring visa.

Day-to-day Responsibilities:

• Design, build, and maintain high-performance, reusable UI components for our React-based front-end application
• Implement interactive quiz experiences within our chatbot interface
• Develop seamless e-commerce integrations allowing users to browse products and complete purchases through conversational flows
• Collaborate with UI/UX designers to translate wireframes and mockups into responsive, accessible interfaces
• Work closely with back-end engineers to integrate front-end components with Python-based APIs and services
• Optimise application performance and responsiveness across devices
• Lead code reviews and mentor junior front-end developers
• Contribute to technical architecture decisions and front-end development standards

Your skills and experience

Technical Must-haves:

• Expert knowledge of React, including hooks, context API, and state management solutions
• Strong JavaScript/TypeScript skills and deep understanding of modern ES6+ features
• Experience setting up comprehensive front-end testing environments from scratch
• Proven experience with real-time communication protocols (WebSockets, Server-Sent Events); and with GCP services, particularly those related to web hosting and deployment
• Understanding of RESTful APIs and experience working with MongoDB
• Experience with front-end build tools and module bundlers (Webpack, Babel, etc.)
• Experience establishing and implementing front-end testing strategies using frameworks like Jest, or React Testing Library). Knowledge of test-driven development practices and strategies for React applications
• Strong knowledge of Firebase, Google Analytics, and experience with e-commerce API integrations (Shopify, Wix, BigCommerce)
• Strong debugging skills across frontend components and API integrations
• Ability to think from a user's perspective, beyond just engineering tasks
• Experience with A/B testing within the chatbot context

Nice-to-haves:

• Beginner Python skills for collaboration with backend team
• Previous experience working with conversational UI or chatbot interfaces
• Experience with LLM APIs (OpenAI, Anthropic, or similar)
• Understanding of accessibility standards (WCAG) and implementation
• Experience with CI/CD pipelines and deployment to cloud environments

Soft-skills Essentials

• Strong organisational skills – You manage tasks effectively and document your work clearly. Write modular, testable code
• Great communicator – You break down complex technical concepts for both tech and non-tech teams
• Startup mindset – A sense of ownership and willingness to experiment with new tech. You thrive in fast-paced environments, iterate quickly, and adapt easily
• Attention to detail – You love optimising workflows, repositories, and documentation

Why you'll love working here

Why Join Us?

• Our approach to designing products reflects our philosophy: keep it simple. You'll do some of your best work on technology everyone is talking about, but only lucky few get to work on.
• We iterate fast and are curious.
• No politics. We are respectful and straightforward.
• We are flexible. We don't expect you to be in office (that means fully remote), or want you to work on something unless it makes sense.
• You will be part of an early team and see the startup grow from the front seat. (Fancy starting yourself someday? This is the place to be)

Interviewing Process

• First Round: 30-minute video call with the Founder (a week after your application if it's a good fit)
• Second Round: A take-home test exercise (2 days after if successful in the First Round)
• Third Round: 45-minute in-person interview with the Founder and Technical Advisors, opportunity to meet the rest of the team (3 working days after if successful in the second round)

To Apply

Sound like a good fit after reading everything we have written? We'd love to hear from you! Send over your CV and Cover Letter including your Git and a demo link of any previous chatbots you’ve worked on.

Please note that application without a cover letter or LinkedIn direct messaging or Easy Apply will not be reviewed.