Frontend Engineer (Full-time)

Overview

Kata.ai is an Indonesian Conversational Artificial Intelligence company with a focus on creating technology to enhance the understanding of human conversations, improving the way humans collaborate with machines. Kata.ai’s NLP technology powers MultiPurpose chatbots (virtual customer service / virtual friend) for major corporations in Indonesia across different kinds of industries such as Unilever (FMCG), Telkomsel (Telco), Bank BRI (Financial Services), and Alfamart (Retail). The company’s Kata Bot Platform can be leveraged to create feature-rich chatbots on top of Kata.ai’s robust and scalable AI technology platform. Established in 2015, the company has become a trusted partner for major corporations such as Microsoft, Accenture, and Line. In 2020, the company received Series-B funding from TransPacific Technology Fund and MDI Venture. Job Description

Design, develop, and maintain performant, accessible, and visually accurate frontend applications for enterprise clients — translating product requirements and UI/UX designs into high-quality user interfaces that support Kata's AI-powered customer experience, chatbot, and voice communication platforms — so that enterprise clients and their end users have a seamless, reliable, and intuitive product experience. Qualifications

Qualifications & Education : Bachelor's degree in Computer Science, Information Systems, Visual Communication Design, or related field Relevant certifications or portfolio of shipped production UI work are a strong plus Technical Skills : Frameworks: React.js (primary); Next.js or Vue.js is a plus Language: TypeScript (required), JavaScript State Management: Redux, Zustand, or React Query Styling: Tailwind CSS, CSS Modules, or Styled Components Real-time Features: WebSocket, Server-Sent Events (SSE), or WebRTC integration for live chat and voice UI API Integration: REST API consumption; GraphQL is a plus Testing: Jest, React Testing Library, Cypress or Playwright for E2E Build Tools: Vite or Webpack Version Control: Git with feature branching and pull request workflow Design Handoff: Proficiency with Figma for design-to-code translation Monitoring: Basic familiarity with Sentry, DataDog RUM, or similar frontend observability tools Experience : Experience Levels

Associate Level (1–2 years) 1–2 years of professional experience in frontend development with shipped production applications Hands-on experience building responsive, cross-browser UIs using React.js and TypeScript Experience consuming REST APIs and integrating frontend with backend services Exposure to performance basics — lazy loading, code splitting, or bundle optimization Familiarity with design handoff tools (Figma) and translating mockups into accurate UI implementations Experience working in Agile/Scrum teams with sprint-based delivery Mid Level (3–5 years) 3–5 years of professional frontend development experience, with at least 2 years building enterprise or B2B-grade web applications Proven track record delivering production-ready UIs for enterprise clients — ideally in regulated industries (financial services, government, telco, or healthcare) Demonstrated experience optimizing frontend performance — Core Web Vitals, bundle size reduction, render optimization, and lazy loading strategies Experience with state management solutions (Redux, Zustand, or React Query) in complex, data-heavy applications Hands-on experience with testing frameworks (Jest, React Testing Library, Cypress or Playwright) Experience collaborating with UI/UX Designers and Product Managers in cross-functional squads Additional Information : We value a flexible working hour for our employees. The most important is we provide a learning experience in Conversational AI Industry.

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