Backend Software Engineer (AI + Audio) - China

WATI.io

Shenzhen, Guangdong Sheng, China permanent

Posted: November 17, 2025

Required Skills

Job Description

About Us

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.

We’re looking for a Backend Software Engineer with a strong background in AI + real-time audio to join our engineering team in China. You will play a key role in building and optimizing communication features that power high-quality, low-latency conversations for our global customers.

Responsibility

• Design, develop, and optimize real-time audio/video streaming services.
• Work with protocols such as WebRTC, SIP, RTP, or related technologies.
• Ensure high performance, low latency, and fault-tolerant communication pipelines.
• Collaborate with frontend, mobile, and product teams to deliver seamless user experiences.
• Write clean, scalable, and maintainable backend code.
• Troubleshoot and resolve production issues related to media services.

Requirements:
• Bachelor’s or Master’s degree in Computer Science or related field.
• 2–4 years of backend development experience, ideally in real-time communications (RTC).
• Proficiency in Go or Python.
• Experience with audio/video codecs, streaming protocols, and media servers.
• Familiarity with cloud platforms (AWS, GCP) and distributed systems.
• Strong problem-solving and debugging skills.

Bonus Points

• Experience with WebRTC-based platforms.
• Experience with AI agents and voice LLM
• Knowledge of scaling media services for large user bases.
• Contributions to open-source RTC projects.

Why Join Us

• Be part of a dynamic, mission-driven team that values collaboration, ownership, and innovation.
• Opportunity to grow and learn from experienced senior engineers and tech leads.
• Onsite working environment that fosters close mentorship and real-time collaboration.
• Exposure to building infrastructure that handles real-world scale and complexity.

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