Staff Data Scientist, Core (Manager) - Korea

Gangnam-gu, Seoul, South Korea

Applications have closed


Moloco provides machine learning-based advertising solutions to drive growth for businesses of all sizes. Turn your first-party data into revenue.

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Moloco’s goal is to make the digital economy more equitable and profitable by delivering advanced machine learning to companies of all sizes. With Moloco’s machine learning platform for growth and performance, every app publisher and online retailer can now unlock the value of their unique, first-party data for user acquisition, retention, and monetization campaigns. 

Founded in 2013, our advanced machine learning engine powers our product portfolio. Moloco Cloud DSP enables performance marketers to quickly scale user acquisition and achieve greater lifetime value through battle-tested prediction models. Moloco Retail Media Platform enables online retailers and marketplaces to establish their own performance ads business. 

Our technology is best in class; we received the SMARTIES X silver award for Machine Learning and AI, and Moloco was named the Cross-Industry Winner for Google Cloud Customer Awards. 

The company is in hyper-growth mode and we ranked #95 in the Inc. 5000 fastest-growing private companies for 2022. We ranked #91 among Deloitte’s 2021 Fast 500 and have been certified by 91% of the company via Great Places to Work

It’s a great time to join this innovative team. Moloco is headquartered in Silicon Valley, with offices in San Francisco, New York, Seattle, London, Seoul, Singapore, Beijing, and Tokyo. For more information, visit

The Impact You'll Be Contributing to Moloco:

Data Science and Analytics (DSA) is the global team of data scientists and analysts. As a staff data scientist in DSA, you will derive performance improvement and cost efficiency in our product through a deep understanding of the ML and infra system, and provide a data driven insight and scientific solution.

Here’s what you’ll be working on:

You will work on various data science projects including:

  • Data Analysis and research: analyzing a large dataset with queries and scripts, extracting valuable signals out of noise, and producing actionable insights into how we could complete and improve Moloco’s complex ML and bidding system.
  • Simulation and Modeling: validating and quantifying the efficiency and performance gain from hypotheses through rigorous simulation and modeling.
  • Experimentation and Causal Inference: developing a robust experiment design and metric framework, and providing reliable and unbiased insights for product and business decision making.

As a  "Tech Lead Manager (TLM)", you will also:

  • Build and manage a team of talented data scientists with the ability to not only keep up with, but also pioneer, in this space.
  • Collaborate with leadership so that your team's work directly impacts company strategy and direction.
  • Communicate with other engineering teams to build the best mobile advertising platform in the world.
  • Working cross-functionally with business and technical teams to support campaign management and team communication


Minimum Requirements: 

  • Master's degree in a quantitative discipline (e.g. Statistics, Operations Research, Bioinformatics, Economics, Computational Biology, Computer Science, Mathematics, Physics, Electrical Engineering, Industrial Engineering) or equivalent research experience.
  • 8+ years of work experience (industry or postgraduate) in data science related fields.
  • Distinctive problem-solving skills, good at articulating product questions, pulling data from large datasets and using statistics to arrive at a recommendation.
  • Excellent verbal and written communication skills, with ability to present information and analysis results effectively.
  • Ability to build positive relationships within DSA and with our stakeholders, and work effectively with cross-functional partners in a global company.
  • Statistics: must have strong knowledge and experience in experimental design, hypothesis testing, and various statistical analysis techniques such as regression or linear models.
  • Machine Learning: must have deep understanding of ML algorithms (i.e. deep learning, random forest, gradient boosted trees, k-means clustering, etc.) and its development, validation, and evaluation.
  • Programming: experience with Python, R or other scripting language, and database language (e.g. SQL) or data manipulation (e.g. Pandas, Dplyr) are required.
  • 2+ years of tech lead (TL) or tech lead manager (TLM) experience leading multiple multi-quarter data science projects, supervising data scientists while interacting with partner Eng, Biz, and Product stakeholders.


  • PhD degree in a quantitative discipline.
  • Ability to manage multiple projects at the same time while paying attention to detail and translate analysis results into business recommendations.
  • Proven ability to own projects end-to-end, even when you have to get creative: you do more than completing delegated tasks.
  • Demonstrated leadership and self-direction. Willingness to both teach others and learn new techniques.

Some of the total rewards we offer…

  • Physical Health & Wellness benefits, to support our Moloco employees in making their health and wellness a priority.
  • Flexible PTO, so long as you promise to come back!
  • Learning & Development - All regular full-time and part-time employees receive an annual learning and development stipend of $2,500 (based on local currency) per calendar year.
  • Commuter Benefit - All full-time employees are eligible to participate in country-specific transportation benefits.
  • WFH - We provide an allowance of $1,000 (based on local currency) to outfit your home office regardless of hybrid or permanently remote employees. 
  • Communications reimbursements for phone and internet.
  • Got Lunch? We provide country specific lunch stipend benefits
  • Virtual initiatives and events to keep you connected with your colleagues.
  • Generous Employee Referral Bonus program.
  • And much more. Ask your recruiter for a full list of total rewards and benefits specific to your region! 

Moloco is a truly rewarding place to work and in an exciting period of growth, which you could be a part of. Join us today and apply now!

* Salary range is an estimate based on our AI, ML, Data Science Salary Index 💰

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Tags: Bioinformatics Biology Causal inference Clustering Computer Science Data analysis Deep Learning Economics Engineering GCP Google Cloud Industrial Machine Learning Mathematics Pandas PhD Physics Python R Research SQL Statistics Testing

Perks/benefits: Career development Flex hours Flex vacation Health care Home office stipend Salary bonus Team events Wellness

Regions: Asia/Pacific Europe North America

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