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Senior Data Scientist

Data Science/Analytics | San Francisco, CA | Full Time

Job Description

Company Name:                       Tapjoy Inc.

Position Title:                            Senior Data Scientist

Location:                                  353 Sacramento Street, Floor 6, San Francisco, CA 94111

Days/Hours:                              Mon – Fri / 8 a.m. to 5 p.m.

Job Summary:   

Experiment and improve machine learning models for the recommendation/ad optimization system. Inform bidding strategy and data engineering architecture. Iterate on various ad-optimization algorithms (CTR prediction, eCPM optimization, user targeting and segmentation, RTB optimization, and Exploration/Exploitation Algos). Gather and analyze large sets of structured and unstructured data and interpret results to create actionable plans for our Offerwall product. Develop training and scoring data pipeline for modeling. Develop and deploy advertisement-ranking models for personalized recommendation experience. Design and conduct online experience and perform statistical hypothesis testing for A/B testing results.


Master’s degree in Statistics or Science (any field) AND Two (2) years of experience in the job offered or related occupation. In lieu of a Master ’s degree in Statistics or Science (any field), the employer will also accept a Bachelor’s degree in Statistics or Science (any field) and Five (5) Years of experience in the job offered or related occupation.   Applicants must have demonstrated experience with: Coding skills in Python and SQL. Packages: scikit-learn, TensorFlow, Keras, and PyTorch; Deploying real-time models in AWS SageMaker or TensorFlow Extended (TFX); Recommendation systems, classification models, class imbalance, and model calibration; Wrangling with data (consolidating data from different sources, missing values, outliers, and feature engineering); Ability to work in a fast paced, test-driven collaborative and iterative programming environment; Major supervised learning and unsupervised learning algorithms (deep learning, tree based models, SVM, Naive Bayes, generalized linear models, PCA, K-means variants, t-SNE, and UMAP); Experimental design and statistical inference; Understanding of RDBMS, SQL and NoSQL alternatives;  Algorithms, Data Structures and Machine Learning fundamentals.

Tapjoy is a leading mobile advertising and app monetization company. Our platform empowers advertisers to connect with over 1 billion monthly active users through value exchange advertising that drives awareness, engagement, and the metrics that matter most to their overall growth. Meanwhile, companies such as Scopely, Glu, Ludia, and many of the Top 200 grossing app publishers trust our platform to monetize their content, grow their audiences, and reward their users. Founded in 2007 and headquartered in San Francisco, Tapjoy is a global organization with offices in Santa Barbara, Boston, London, Beijing, Tokyo, and Seoul.

Tapjoy is an equal opportunity employer. We believe that diversity and inclusion lead to stronger, more innovative teams and better business results; we want to draw from the broadest talent pool possible and encourage qualified applicants. Tapjoy does not discriminate on the basis of sex, race, ethnicity, color, age, sexual orientation, gender (including identity and expression), disability (mental or physical), religion, national origin, citizenship, marital status, military or veteran status, or any other protected classification protected by applicable law; we will provide reasonable accommodations for qualified individuals with disabilities, and pursuant to applicable fair chance ordinances, we will consider for employment qualified applicants with arrest and conviction records.

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