Senior Data Scientist

Nexxen; New York (NY); Hybrid; USD 160,000 - 200,000; Full time

Benefits offered by this job

Medical insurance

Dental insurance

Vision

Disability insurance

401(k)

Unlimited vacation

Company-paid holidays

Job summary

Nexxen is seeking a Senior Data Scientist to join our team in New York City, focused on core optimization and bidding logic for our DSP. This role combines machine learning, large-scale data processing, and ad-delivery performance to influence bidding, win rates, and impression optimization in real time.

The ideal candidate has 5+ years in data science or applied ML, strong Python/SQL skills, and experience with Spark/Scala.

Qualifications

• Master’s degree in a quantitative field or related discipline.
• 5+ years of hands-on data science or ML experience, preferably in real-time/high-scale environments.
• Proficient with applied ML techniques and tree-based models (e.g., XGBoost).
• Strong skills in Python and SQL; capable of navigating large legacy codebases; comfortable with production changes.

Responsibilities

• Design, implement, and evaluate ML models for bidding, pacing, KPI prediction, and forecasting.
• Analyze large-scale data using Spark, SQL, and Python to derive actionable insights.
• Navigate and improve complex legacy codebases and production systems.
• Collaborate with product managers and engineers to deliver end-to-end data solutions.
• Create clear technical documentation and communicate findings to diverse stakeholders.

Skills

Python

SQL

Spark/Scala

XGBoost

Education

Master’s degree in Data Science/related quantitative field

Tools

Copilot

ChatGPT

Job description

What You’ll Do

We’re looking for a self-directed, analytical, and curious Sr Data Scientist with 5+ years of hands-on experience to join our team working on the core optimization and bidding logic of the Nexxen Demand-Side Platform (DSP). You will work on problems at the intersection of machine learning, large-scale data processing, and ad delivery performance and your work will directly impact how we bid, win, and optimize impressions across real-time programmatic advertising exchanges.

This role will be based in the New York City office. Our team follows a hybrid schedule working in-office three days a week and remotely for the rest.

Job Description

Each day can be different here at Nexxen, but some of the things you can expect to be doing daily are:

• Design, implement, evaluate and help deploy machine learning models for bidding, pacing, KPI prediction (Click, Action, Viewability etc.) and Forecasting.
• Analyze large-scale behavioral and performance data using Spark (Scala/PySpark), SQL, and Python.
• Deep dive into complex, legacy codebases; you should be comfortable navigating and improving existing systems.
• Collaborate with product managers, engineers, and other data scientists to define problems and deliver end-to-end solutions.
• Write clear, concise technical documentation and communicate insights effectively across both technical and non-technical stakeholders.

What Will I Bring?

• Master’s in a quantitative field such as Data Science, Operations Research, Computer Science, Mathematics, Statistics, Industrial Engineering, Mechanical Engineering, Physics, or related field
• 5+ years of experience in a data science or applied machine learning role, ideally in a high-scale, real-time environment.
• Proficient with applied machine learning techniques (classification, regression, evaluation metrics, etc.), especially tree-based models like XGBoost.
• Comfortable navigating large, complex legacy codebases and proposing changes to production systems. Bonus: comfortable using LLM-based tools (e.g., Copilot, ChatGPT) to accelerate development, debugging, and documentation.
• Strong programming skills in Python, and SQL.
• Experience with Scala/Apache Spark for distributed data processing and machine learning at scale.
• Strong written and verbal communication skills - able to synthesize technical findings into clear, actionable insights.
• Self-directed, curious, and able to thrive in a fast-paced and evolving industry.

In support of pay transparency and equity, the minimum and maximum full-time annual base salary for this role is $160,000 - $200,000 the time of posting, with the potential of an incentive or bonus. While this is our reasonable expectation this is not a guarantee of compensation or salary, actual compensation is influenced by a wide range of factors including but not limited to skill set, level of experience, education, certifications, responsibility, and geographic location. Candidates hired to work in other locations will be subject to the pay range associated with that location. We offer a variety of benefits, including medical, dental, vision, disability insurance, 401(k), EAP, parental leave, unlimited vacation, and company-paid holidays. The specific programs and options available will vary depending on the state, start date, and employment type. Our Talent Acquisition team will be happy to answer any questions you may have.

At Nexxen, we value our differences, varied experiences, and collective contribution. We know that not everyone takes the same career path, so if you don't match this job description perfectly, don't worry! We would rather see your application than risk missing out on your potential to make an impact.

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