About Wati Started as a WhatsApp team inbox in 2020, Wati has evolved into an AI-powered customer engagement platform that goes beyond a single channel. Designed for businesses that sell, support, and grow through conversations, Wati observes customer intent in real time, decides the next best revenue action, and executes it across marketing, sales, and support — on WhatsApp, Instagram, Facebook, TikTok, SMS, and more. Trusted by over 16,000 customers across 190+ countries, Wati simplifies complex operations and business conversations with a unified inbox, no-code automation, and our intelligent AI layer, Astra. Proudly backed by Tiger Global, Sequoia Capital, DST Global, and Shopify, and recognised as a Premium Partner of Meta and Google. What You’ll Be Doing Write clean, efficient, and maintainable backend code in C# or Golang under the guidance of senior engineers. Assist with feature development, debugging, code reviews, testing, and production issue investigation. Participate in software project planning, feature enhancement, and bug fixing across Wati’s messaging and revenue orchestration platform. Build and maintain reliable APIs, services, integrations, and internal tools with a focus on scalability, performance, and maintainability. Collaborate with product, frontend, QA, and engineering teams to understand requirements and deliver high-quality software solutions. Learn and apply engineering best practices, including automated testing, observability, documentation, and secure software development. Where relevant, contribute to AI-powered product capabilities such as agent workflows, LLM integrations, knowledge retrieval, tool calling, or evaluation pipelines. Use AI-assisted development tools responsibly to improve productivity, while maintaining strong engineering judgment and code quality. Requirements Currently pursuing or recently completed a Bachelor’s or Master’s degree in Computer Science, Software Engineering, or a related field. Proficiency in C# and/or Golang, or strong fundamentals and willingness to learn and work with these languages. Solid understanding of programming fundamentals, data structures, APIs, databases, and software engineering practices. Strong problem-solving skills, attention to detail, and willingness to learn in a fast-paced environment. Ability to communicate clearly and collaborate effectively with a cross-functional team. Previous internship, project, open-source, or hands-on software development experience is preferred. Able to work on-site in the Shenzhen office five days a week for at least six months. Nice to Have Familiarity with LLM-powered applications, such as Gemini, OpenAI, Claude, or open-source models. Experience or personal projects involving AI agents, RAG, vector databases, function/tool calling, workflow automation, or prompt engineering. Familiarity with AI-assisted coding tools such as Cursor, GitHub Copilot, or Gemini. Interest in evaluating and improving AI system quality, reliability, safety, latency, or cost. Experience with cloud services, distributed systems, message queues, or backend observability tools. Benefits Work on a globally used SaaS platform serving over 16,000 customers across 190+ countries. Learn from experienced engineers while contributing to real customer-facing backend systems. Gain exposure to modern backend engineering and, where applicable, practical AI-agent and LLM product development. Be part of a diverse, globally distributed, collaborative, and transparent team. Competitive compensation and meaningful ownership from day one.