{"id":2711030,"url":"https://alion.io/job/tepfun-toskaifagongchengshi","title":"RTOS开发工程师","company":{"id":42724,"name":"StepFun","domain":"stepfun.com","url":"https://alion.io/company/stepfun-com","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Moka","truth_index":{"grade":"A","score":87,"open_postings":219,"ghost_share":0,"stale_share":0.521,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-11-02T06:13:15Z"}},"role":"Hardware","role_family":"Hardware","seniority":null,"employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Shenzhen, China"],"countries":["CN"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":17000,"max_usd":47000,"period":"year","method":"role_country_seniority_unknown","sample_n":293},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"FreeRTOS","optional":false},{"name":"RTOS","optional":false}],"status":"live","first_seen_at":"2026-08-12T00:00:00Z","employer_posted_date":"2026-10-20","last_verified_at":"2026-11-02T15:32:25Z","board_verified":true,"closed_at":null,"days_open":82,"trust":{"level":"ok","repost_count":0,"flags":[],"days_open":82},"description":"基于 RTOS(FreeRTOS / RT-Thread / ThreadX 等)进行智能音频设备的固件开发与调优,保障音频链路的实时性与稳定性;\n负责音频通路开发:麦克风采集、编解码、录音存储 / 缓存、播放与提示音等;\n负责音频外设的驱动与调试(I2S / PDM、Codec、麦克风阵列等),完成软硬件联调;\n对接端侧音频算法(AEC / NS / AGC / VAD 等),配合完成音频效果调优;\n基于 RTOS 做音频任务调度、缓冲(环形缓冲)管理与异常恢复;\n参与量产问题排查(音频卡顿、丢帧、噪声、死机等),定位根因并输出解决方案。\n任职要求\n本科及以上学历,电子 / 通信 / 计算机等相关专业;\n3 年左右嵌入式开发经验,熟悉 C 语言;\n熟悉至少一种主流 RTOS(FreeRTOS / RT-Thread / ThreadX),有多任务开发经验;\n熟悉音频接口与链路(I2S / PDM / Codec / DMA / 环形缓冲等),有音频外设调试经验;\n了解常见音频编解码(Opus / AAC / ADPCM 等)或 AEC / NS / AGC / VAD 中的至少一类;\n具备基本的问题定位能力(会用示波器 / 逻辑分析仪 / 日志排查)。\n加分项\n有消费级 / 可穿戴音频产品(录音笔、耳机、对讲、会议麦、工牌等)开发经验;\n熟悉麦克风阵列 / 远场拾音;\n有低功耗录音、边录边传、断点续录等经验;\n有云端 ASR / 语音服务对接经验。","description_format":"text","description_chars":635,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[{"language":"Chinese","level":"Advanced (C1)","optional":false}]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-16T13:17:50Z"}],"visa":[],"liveness":{"score":7,"band":"cold","label":"Long shot","p_open":1,"p_active":0.255,"p_room":0.28,"age_days":82,"expected_fill_days":30,"reasons":["conf:3","stale_co","velocity","win:tail","crowd:brand"],"computed_at":"2026-11-02T06:13:15Z"},"pay":null,"html_url":"https://alion.io/job/tepfun-toskaifagongchengshi","json_url":"https://alion.io/job/tepfun-toskaifagongchengshi.json","meta":{"generated_at":"2026-11-02T16:52:00Z","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":23477,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-03T00:00:00Z"}},"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":42724},"rest":"https://alion.io/mcp/rest/get_company?id=42724"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Ftepfun-toskaifagongchengshi"},{"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%2Ftepfun-toskaifagongchengshi"},{"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%2Ftepfun-toskaifagongchengshi"},{"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/tepfun-toskaifagongchengshi\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Ftepfun-toskaifagongchengshi"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":2711030}},{"tool":"search_jobs","arguments":{"company":"stepfun.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":2711030},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. Docs: https://alion.io/developers"}}