{"id":698946,"url":"https://alion.io/job/wati-io-backend-software-engineer-ai-audio-china","title":"Backend Software Engineer (AI + Audio) - China","company":{"id":19796,"name":"Wati","domain":"wati.io","url":"https://alion.io/company/wati-io","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workable","truth_index":{"grade":"A","score":94,"open_postings":55,"ghost_share":0.018,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":197,"computed_at":"2026-10-22T06:10:10Z"}},"role":"Backend","role_family":"Backend","seniority":null,"employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Hong Kong","Shenzhen, China"],"countries":["HK","CN"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"GCP","optional":false},{"name":"Go","optional":false},{"name":"Python","optional":false},{"name":"WebRTC","optional":false},{"name":"WhatsApp","optional":false},{"name":"AI Agents","optional":true},{"name":"LLM","optional":true}],"status":"closed","first_seen_at":"2025-11-17T00:00:00Z","employer_posted_date":"2025-11-17","last_verified_at":"2026-10-21T07:47:20Z","board_verified":false,"closed_at":"2026-10-21T07:47:20Z","days_open":338,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":338},"description":"About Us\nWati is the world's leading WhatsApp-first conversational growth platform, empowering businesses to build deeper customer relationships and accelerate revenue growth.\nTrusted 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.\nIn 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.\nOur Platform\nThe 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.\nOur Backing & Partnerships\nWati 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.\nWe’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.\nResponsibility\nDesign, develop, and optimize real-time audio/video streaming services.\nWork with protocols such as WebRTC, SIP, RTP, or related technologies.\nEnsure high performance, low latency, and fault-tolerant communication pipelines.\nCollaborate with frontend, mobile, and product teams to deliver seamless user experiences.\nWrite clean, scalable, and maintainable backend code.\nTroubleshoot and resolve production issues related to media services.\nRequirements\nBachelor’s or Master’s degree in Computer Science or related field.\n2-4 years of backend development experience, ideally in real-time communications (RTC).\nProficiency in Go or Python.\nExperience with audio/video codecs, streaming protocols, and media servers.\nFamiliarity with cloud platforms (AWS, GCP) and distributed systems.\nStrong problem-solving and debugging skills.\nBonus Points\nExperience with WebRTC-based platforms.\nExperience with AI agents and voice LLM\nKnowledge of scaling media services for large user bases.\nContributions to open-source RTC projects.\nWhy Join Us\nBe part of a dynamic, mission-driven team that values collaboration, ownership, and innovation.\nOpportunity to grow and learn from experienced senior engineers and tech leads.\nOnsite working environment that fosters close mentorship and real-time collaboration.\nExposure to building infrastructure that handles real-world scale and complexity.","description_format":"text","description_chars":3101,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"China","iso":"CN","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Artificial Intelligence","Marketing Automation","Conversational AI","Customer Support & Help Desk Software"],"lifecycle":[{"event":"open","at":"2026-09-11T02:26:26Z"},{"event":"open","at":"2026-09-25T22:48:27Z"},{"event":"close","at":"2026-10-21T07:47:20Z"}],"visa":[],"liveness":null,"pay":null,"html_url":"https://alion.io/job/wati-io-backend-software-engineer-ai-audio-china","json_url":"https://alion.io/job/wati-io-backend-software-engineer-ai-audio-china.json","meta":{"generated_at":"2026-10-22T17:12:49Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":18079,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-23T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":19796},"rest":"https://alion.io/mcp/rest/get_company?id=19796"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fwati-io-backend-software-engineer-ai-audio-china"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fwati-io-backend-software-engineer-ai-audio-china"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fwati-io-backend-software-engineer-ai-audio-china"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/wati-io-backend-software-engineer-ai-audio-china\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fwati-io-backend-software-engineer-ai-audio-china"}]}