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Open nowPosted 192 days ago

抖音多业务场景的大模型训练与应用 - 抖音直播

ByteDance19,258 open roles

Where
Beijing, Chinese Mainland
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Your applicationOpen now抖音多业务场景的大模型训练与应用 - 抖音直播ByteDance · Beijing, Chinese Mainland

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The clock on this job

Early applications get read.

15.1% of postings close within 7 days. Measured by our own scanner across the market. ByteDance postings stay open a median of 23 days.

Share of postings closed within
  1. 2.4%1 day
  2. 6.5%3 days
  3. 15.1%7 days
This job: posted 192 days ago

ByteDance median: 23 days open

The posting

团队介绍：直播团队负责为抖音集团旗下产品提供直播服务。团队负责直播平台技术和直播业务研发，打造灵活稳定的直播服务平台，为用户提供优质直播体验，支持电商、本地生活、游戏、节目、多人互动等不同类型的业务场景。直播业务发展迅猛，处于行业头部地位，业务发展空间巨大。现在加入我们，和优秀的人一起做有挑战的事，你的技术与创意将影响亿级用户，激发创意和丰富生活。

课题介绍： 抖音研发团队，负责抖音短视频、直播、中长视频、搜索、图文、音乐、社交通讯、医疗等业务技术开发，以及字节跳动旗下产品的客服平台、业务安全、用户增长、用户体验、抖音账号、AI技术研究与赋能等中台团队的研发工作。本次课题共涉及5个方向： 1、用户体验：抖音场景下的端侧大模型架构与推理加速体系研究； 2、抖音直播：迭代3D生成大模型，优化数据、编码和模型架构，提升3D资产生成效率和品质； 3、汽水音乐：聚焦音乐生成大模型的核心算法研究与优化，旨在攻克上述技术瓶颈，提升AI音乐创作的质量、可控性与创新性，赋能短视频配乐、虚拟偶像等多元应用场景； 4、AI技术研究与赋能：随着大模型在代码生成与软件开发中的应用不断深化，构建端到端AI Coding模型已成为提升研发效率的关键方向。本课题聚焦从数据构建、模型训练（SFT/RL）、到推理部署的全链路优化，探索从需求理解，代码生成与修复，与功能上线的一体化建模方法。重点解决领域知识注入、大规模SFT训练、Agentic RL等问题，推动AI在抖音等真实业务研发场景中的规模化落地； 5、小荷健康：围绕问诊、工具调用、科普与病例分析，提升医疗大模型任务规划与推理能力，保证结果准确稳定可用。

课题挑战： 1、资源约束极强，需兼顾算力、内存与功耗；通用性要求高，需支撑多业务场景高精度处理；面向差异化设备，实现任务复杂度的弹性适配； 2、高质量3D数据严重稀缺，3D几何与纹理表征复杂，生成质量与美术水准比仍有差距，当前链路冗长效率偏低； 3、音乐审美偏好的量化建模问题、长序列高品质音乐生成问题、多风格泛化与创新生成问题、推理增强方法的迁移应用问题； 4、抖音研发大模型需高效的业务知识注入，复杂且超长的上下文管理，解决高质量训练数据稀缺，Agentic RL的持续训练； 5、小荷健康围绕医疗场景基座模型 ，Agent Foundation构建与评测体系，强化模型复杂知识检索、任务分解及长链路执行能力。通过优化 SFT、RL、OPD等后训练方法的组合策略，兼顾模型效果、稳定性与泛化性。同时探究线上用户体验与基座模型训练间的关联，实现医疗大模型能力与实际应用效果的协同提升。

课题价值 1、技术价值：等参数量级下，可大规模落地的业界领先模型；业务价值：提升抖音用户和业务接入的覆盖面，获得用户和营收价值； 2、技术上提升3D表征与生成能力，迭代3D生成大模型；业务上支撑直播和社交应用，产出丰富3D资产，满足海量用户的个性化需求； 3、技术上突破音乐生成在审美建模、长序列连贯性等核心瓶颈，引领AI音乐生成技术前沿；业务上提升抖音/汽水音乐的AI创作能力，降低音乐创作门槛，丰富内容生态，提供音乐内容供给； 4、技术上探索前沿模型训练策略，构建字节内部真实环境下的数据飞轮，提高业务研发效率，提升代码质量与性能； 5、技术上提升医疗大模型Agent与Post-Training方向的关键技术突破，提升问诊、科普、病例分析等核心场景业务效果，沉淀可复用的数据、训练与评测方法，支撑长期模型演进。

1、2027届毕业，获得博士学位，人工智能、自然语言处理、计算机视觉、计算机图形学相关专业优先； 2、具有优秀的编程能力，熟练使用PyTorch深度学习框架和相关高性能计算框架； 3、具有丰富的自然语言处理、计算机视觉、计算机图形学、强化学习相关研究经验，在SIGGRAPH/CVPR/ICCV/ECCV/ACL/ICLR/ICML/NeurIPS/TPAMI等顶会顶刊上发表论文者优先； 4、熟悉扩散模型、GPT等生成式模型，有图片/视频/3D生成大模型研发经验、有数字人相关领域研发经验、有Unity/Unreal引擎使用经验者优先考虑； 5、具备优秀的分析和解决问题的能力，对解决具有挑战性的问题充满激情，具有良好的沟通和团队合作能力。

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