Software Development Engineer Intern

About WatiStarted 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 DoingWrite clean, efficient, and maintainable backend code in C# or Golang under the guidance of senior engineersAssist with feature development, debugging, code reviews, testing, and production issue investigationParticipate in software project planning, feature enhancement, and bug fixing across Wati's messaging and revenue orchestration platformBuild and maintain reliable APIs, services, integrations, and internal tools with a focus on scalability, performance, and maintainabilityCollaborate with product, frontend, QA, and engineering teams to understand requirements and deliver high-quality software solutionsLearn and apply engineering best practices, including automated testing, observability, documentation, and secure software developmentWhere relevant, contribute to AI-powered product capabilities such as agent workflows, LLM integrations, knowledge retrieval, tool calling, or evaluation pipelinesUse AI-assisted development tools responsibly to improve productivity, while maintaining strong engineering judgment and code qualityRequirementsCurrently pursuing or recently completed a Bachelor's or Master's degree in Computer Science, Software Engineering, or a related fieldProficiency in C# and/or Golang, or strong fundamentals and willingness to learn and work with these languagesSolid understanding of programming fundamentals, data structures, APIs, databases, and software engineering practicesStrong problem-solving skills, attention to detail, and willingness to learn in a fast-paced environmentAbility to communicate clearly and collaborate effectively with a cross-functional teamPrevious internship, project, open-source, or hands-on software development experience is preferredAble to work on-site in the Shenzhen office five days a week for at least six monthsNice to HaveFamiliarity with LLM-powered applications, such as Gemini, OpenAI, Claude, or open-source modelsExperience or personal projects involving AI agents, RAG, vector databases, function/tool calling, workflow automation, or prompt engineeringFamiliarity with AI-assisted coding tools such as Cursor, GitHub Copilot, or GeminiInterest in evaluating and improving AI system quality, reliability, safety, latency, or costExperience with cloud services, distributed systems, message queues, or backend observability toolsBenefitsWork on a globally used SaaS platform serving over 16,000 customers across 190+ countriesLearn from experienced engineers while contributing to real customer-facing backend systemsGain exposure to modern backend engineering and, where applicable, practical AI-agent and LLM product developmentBe part of a diverse, globally distributed, collaborative, and transparent teamCompetitive compensation and meaningful ownership from day one