Senior Data Scientist (Ads & Demand Optimization)

About Grab and Our Workplace Grab is Southeast Asia's leading superapp. From getting your favourite meals delivered to helping you manage your finances and getting around town hassle-free, we've got your back with everything. In Grab, purpose gives us joy and habits build excellence, while harnessing the power of Technology and AI to deliver the mission of driving Southeast Asia forward by economically empowering everyone, with heart, hunger, honour, and humility. Get to Know the Team Join our Ads and Demand Optimization Team, sitting at the intersection of machine learning, economics, and engineering. We design algorithms ensuring the right ads and promotional incentives reach the right audience. We optimise ads inventory and promotional spend to maximise Return On Investment (ROI) for merchants, users, and the platform. We focus on architecting the "brains" behind the system—solving complex marketplace challenges. Get to Know the Role We are looking for a Senior Data Scientist (G4) to bridge ads ranking and demand personalization. You'll develop algorithmic frameworks that shape user journeys, govern ads auctions, and allocate promotional budgets. You'll report into the Data Science Manager II and based onsite at Grab One North Singapore office. The Critical Tasks You Will Perform • Design Optimization Frameworks: Develop data science methodologies for ad ranking and automated promo assignment. • Lead Causal Inference: Deploy uplift models and causal inference frameworks to maximise promotional incrementality. • Optimise Auctions: Improve ads auction mechanics and budget allocation to balance ecosystem health and platform ROI. • Experimentation and Metrics: Design frameworks (A/B testing, switchback, bandits) evaluating CTR, CVR, and incremental GMV. • Collaborate: Partner with Product and Engineering to translate marketplace challenges into clear data science roadmaps. What Essential Skills You Will Need • Qualification: Bachelor's Degree in Computer Science or related fields • Experience: At least 4 years as a Data Scientist in ads ranking, recommendation, uplift modelling, or marketplace optimization. • Methodology: Expertise in causal inference, uplift modelling, experimental design, or ads auction theory. • Foundations: statistical modelling, machine learning, and mathematical optimization foundations. • Tools: Proficiency in Python, SQL, and distributed data frameworks like Spark for large-scale datasets. • Communication: Ability to translate complex concepts and bring structural clarity to open-ended product problems. Life at Grab We care about your well-being at Grab, here are some of the global benefits we offer: • We have your back with Term Life Insurance and comprehensive Medical Insurance. • With GrabFlex, create a benefits package that suits your needs and aspirations. • Celebrate moments that matter in life with loved ones through Parental and Birthday leave , and give back to your communities through Love-all-Serve-all (LASA) volunteering leave • We have a confidential Grabber Assistance Programme to guide and uplift you and your loved ones through life's challenges. • Balancing personal commitments and life's demands are made easier with our FlexWork arrangements such as differentiated hours What We Stand For at Grab We are committed to building an inclusive and equitable workplace that enables diverse Grabbers to grow and perform at their best. As an equal opportunity employer, we consider all candidates fairly and equally regardless of nationality, ethnicity, religion, age, gender identity, sexual orientation, family commitments, physical and mental impairments or disabilities, and other attributes that make them unique.