Senior Lead Data Scientist: Relevance & Pricing at Scale

Traveloka; Singapore; On-site; SGD 180,000 - 260,000; Full time

Job summary

Traveloka is seeking a Senior Lead Data Scientist to own the end-to-end user journey from discovery to pricing. You will set the technical direction, leadHigh-stakes problems, and architect scalable systems for millions of bookings across a global user base.

You will guide experimentation design, influence product and business strategy with data-driven insights, and mentor senior scientists while delivering measurable marketplace impact.

Qualifications

• You have at least 10 years of relevant experience.
• Strong command of Python and the ML/stats stack (scikit-learn, LightGBM, XGBoost, deep learning and optimisation where relevant)
• You write advanced SQL and architect the large-scale data and feature systems whole teams rely on
• You take the most ambiguous, domain-spanning problems and turn them into the bets the funnel is organised around
• You have authoritative command of search, recommendation, ranking, and pricing systems at marketplace scale
• You understand marketplace economics deeply and anticipate the second- and third-order effects of a model change
• You design and adjudicate sophisticated experimentation and own the measurement standard others defer to
• You set technical direction across teams through influence, judgment, and decision authority on the issues in your remit
• You hold a degree in a quantitative field (Master's or higher preferred) or equivalent, and influence senior cross-functional leaders
• You work confidently with cloud (GCP preferred) and production ML, and set the bar for AI-assisted ways of working
• You have a track record of models that delivered large, attributable business impact at marketplace scale
• You have designed an internal ML platform, feature store, or experimentation framework that changed how teams build
• You have worked on marketing or commercial measurement (MMM, MTA, propensity, CLV) that informed real spend or pricing decisions

Responsibilities

• Set the modelling and experimentation direction across the product funnel and personally lead the highest-stakes problems
• Architect systems that hold up at the scale of millions of bookings and a global user base, owning the hard trade-offs
• Make the call on contentious short-term technical questions, from metric definitions to model architecture, across the domain
• Resolve the measurement and modelling problems that block whole teams, and define the patterns they then reuse
• Influence product and business strategy with a data-science perspective leaders trust
• Find where existing models, pipelines, or metrics quietly cost the business at scale, and drive the fix
• Mentor senior scientists and raise the technical bar across the domain through review and example

Skills

Python

ML/Stats stack

SQL

Experimentation design

Cloud (GCP)

Education

Master's degree or higher

Tools

scikit-learn

LightGBM

XGBoost

Deep learning frameworks

Job description

Traveloka is seeking a Senior Lead Data Scientist to own the end-to-end user journey from discovery to pricing. You will set the technical direction, leadHigh-stakes problems, and architect scalable systems for millions of bookings across a global user base.

You will guide experimentation design, influence product and business strategy with data-driven insights, and mentor senior scientists while delivering measurable marketplace impact.