Full-Stack Engineer - Frontend Focus (SaaS)

# Full-Stack Engineer - Frontend Focus (SaaS) > · Shenzhen, China · — · Posted 2025-12-03 **Workplace:** on_site **Department:** Engineering ## Description **Wati** is the world's leading WhatsApp-first conversational growth platform, empowering businesses to build deeper customer relationships and accelerate revenue growth. Trusted and loved by over 14,000 customers across 100+ countries, Wati has established itself as the premier choice for businesses leveraging WhatsApp and other messaging channels to connect with customers on their platform of choice. In a world where real-time interactions drive growth, Wati's story is all about business growth through conversations. At Wati, we believe that every conversation matters, whether it's engaging a first-time prospect, nurturing a qualified lead, or deepening relationships with loyal clients. We transform these conversations into opportunities for building relationships, and strong relationships lead to increased revenue. **Our Platform** The AI-native platform simplifies complex business operations by bringing all customer interactions under one intelligent roof. Designed for scalability and ease of use, our solution delivers a measurable ROI while adapting to businesses of all sizes, from emerging startups to established enterprises. **Our Backing & Partnerships** Wati is proudly backed by world-class investors including Tiger Global, Sequoia Capital, DST Global, and Shopify. As a Premium-tier Partner of Meta, Google, and WhatsApp, we maintain the highest standards of integration and platform excellence. **About The Role** We’re looking for a Full-Stack Software Engineer with a strong frontend focus (about 80% frontend, 20% backend) to help build our next-generation AI Customer Service Agent. You’ll develop key user-facing features, integrate external APIs, and improve overall performance while working closely with the product and design teams. **Job Responsibilities** - Participate in building the next-generation SaaS Customer Service Agent, responsible for the core architecture design and development of the AI Agent, ensuring seamless integration with existing products. - Engage in full-stack development and AI Agent construction, optimizing key modules such as decision-making, task scheduling, and multimodal data processing for performance and stability. - Integrate and call various external APIs to connect internal and external data sources. - Continuously optimize the Agent’s usability, stability, and effectiveness based on feedback and performance metrics, ensuring high performance and scalability. - Collaborate closely with product, design, and business teams to gather requirements, design scalable solutions, and drive rapid iteration and deployment. ## Requirements - Bachelor’s degree or above in Computer Science or a related field, with 3–5 years of relevant work experience. - Strong full-stack development capability, proficient in backend languages such as Python or Go, and good front-end experience including JavaScript / TypeScript and frameworks such as React, with clean and structured coding practices. - Familiarity with AI concepts and frameworks related to Agent development. - Strong problem-solving and independent working skills, with excellent communication and teamwork abilities. **Preferred Qualifications** - Proficiency in using AI-driven development tools (e.g. Cursor) to improve front-end development efficiency. - Experience in developing Agent systems or automation frameworks; experience in secondary development on Dify or Coze is a plus. - Familiarity with cloud platforms such as GCP or AWS. - Fluency in English for daily work; management experience is an advantage. **What You’ll Gain** - Opportunity to use cutting-edge AI technology to build and scale real-time communication systems supporting global users. - Close collaboration with senior engineers to rapidly grow your technical expertise. - Valuable experience in a fast-growing, international SaaS company. ## Apply [Apply at ](https://apply.workable.com/wati-dot-i-o/j/9B24A039D2/apply) --- Powered by [Workable](https://www.workable.com)