Senior Principal Data Scientist (Fulfilment)

📋 Description

• Design and implement end-to-end RL systems that combine model-based RL, offline RL, simulation, and
• Build latent world models and marketplace state representations that capture supply-demand
• Develop systems that optimize across multiple marketplace levers simultaneously—pricing
• Create policy evaluation frameworks and establish monitoring systems for safe deployment of new
• Fine-tune open-source large language models on domain-specific data for prediction, reasoning, and
• Design and implement training strategies for language models, including supervised fine-tuning

🎯 Requirements

• PhD in Computer Science, Operations Research, Applied Mathematics, or related field with at least
• Proficient in RL fundamentals (Markov Decision Processes, stochastic control, reward design)
• Experience building production ML/RL systems with online learning or simulation-based optimization
• Knowledge in world models and sequential modelling (RNNs, transformers, state-space models)
• Hands-on experience fine-tuning large language models in production (SFT, RLHF, DPO, or GRPO; LoRA
• Ability to design evaluation frameworks for generative models (factual accuracy, reasoning quality)

🎁 Benefits

• Term Life Insurance
• Comprehensive Medical Insurance
• GrabFlex: create a benefits package that suits your needs and aspirations
• Parental and Birthday leave
• Love-all-Serve-all (LASA) volunteering leave
• Confidential Grabber Assistance Programme