Job Description

Business Unit Technology Engineering Group (TEG) is responsible for supporting the company and its business groups on technology and operational platforms, as well as the construction and operation of R&D management and data centers, TEG provides users with a full range of customer services. As the operator of the largest networking, devices, and data center in Asia,TEG also leads the Tencent Technology Committee in strengthening infrastructure R&D through internal and distributed open source collaboration, constructing new platforms and supporting business innovation.
What the Role Entails

• Algorithm-Framework Co-design: Act as a technical bridge between the algorithm and framework teams. Deeply understand the principles and evolution trends of post-training algorithms for multimodal large models (e.g., RLHF, DPO, Curriculum Reinforcement Learning) and translate these into functional requirements for the underlying frameworks, providing insights for framework architecture design
• Training Pipeline Optimization and Evaluation: Lead or deeply participate in the setup, optimization, and effectiveness evaluation of post-training pipelines (e.g., multimodal SFT, RLHF). Focus on training stability, efficiency, and generalization capability, particularly proposing systematic improvements for areas like cross-modal alignment, reward function design, and policy optimization
• Technical Research and Bottleneck Resolution: Proactively track cutting-edge advancements in multimodal reinforcement learning post-training from academia and industry. Perform root cause analysis for training bottlenecks (e.g., insufficient OOD generalization, modality fusion conflicts) and collaborate with the framework team to develop and implement solutions
• Cross-team Support and Knowledge Sharing: Collaborate efficiently with framework development, hardware optimization, and business algorithm teams to ensure the implementation of technical solutions. Produce high-quality technical documentation, design drafts, and experimental reports. Organize internal sharing sessions to enhance the overall technical expertise of the team

Who We Look For

• Education and Technical Background: A Master's degree or higher in Computer Science, Artificial Intelligence, Electronic Engineering, Automation, or related fields. A solid foundation in machine learning/deep learning, with a deep understanding of multimodal large models and the reinforcement learning post-training technology stack

Core Algorithm and Engineering Skills: * Proficiency in Python programming and familiarity with deep learning frameworks like PyTorch.

• Deep understanding of model architectures such as Transformer and Diffusion
• Thorough comprehension of the principles, processes, and common challenges (e.g., training instability, reward hacking) of post-training algorithms like SFT, RLHF, and DPO
• Strong engineering implementation and debugging skills, capable of rapidly validating algorithmic ideas and conducting rigorous experimental analysis for performance evaluation

Framework Collaboration and System Perspective: * Familiarity with at least one mainstream large model training/inference framework (e.g., Megatron-LM, DeepSpeed, VLLM) and an understanding of their architectural design principles

• Ability to assess framework usability, scalability, and performance from an algorithmic perspective and propose improvement suggestions. Experience with post-training frameworks like VERL or OpenRLHF is a plus
• Soft Skills: Excellent cross-team communication skills, able to clearly translate requirements and articulate solutions between algorithm and engineering teams. A strong sense of responsibility, self-motivation, and passion for solving complex problems

Equal Employment Opportunity at Tencent
As an equal opportunity employer, we firmly believe that diverse voices fuel our innovation and allow us to better serve our users and the community. We foster an environment where every employee of Tencent feels supported and inspired to achieve individual and common goals.

Skills Required