Senior Data Scientist - AdTech (6-month Contract)

Proximity Works; Palo Alto, San Francisco (CA, CA); On-site; USD 170,000 - 230,000; Full time

Benefits offered by this job

Best-in-class salary

Proximity Talks

Continuous learning

High-impact projects

Job summary

Proximity seeks a highly skilled Senior Data Scientist to design, build, and deploy scalable ML models at scale. You will work with big data, Spark, Hadoop, and modern cloud platforms, delivering data-driven solutions end-to-end.

You will own experimentation to production, using Python, SQL, and ML libraries, while collaborating with engineers to deploy on AWS and optimize data pipelines for speed and efficiency.

Qualifications

• Minimum 5 years of experience in Data Science or ML.
• Strong Python, SQL, and ML libraries (Pandas, Scikit-learn, TensorFlow, PyTorch).
• Experience deploying ML models to production on big data platforms (Hadoop, Spark).
• Hands-on experience with Databricks, Airflow, and AWS EMR.
• Knowledge of AWS services (S3, Lambda, SageMaker) preferred.

Responsibilities

• Design, build, and deploy scalable ML models into production systems.
• Develop advanced analytics and predictive models using Python, SQL, and ML frameworks.

Skills

Python

SQL

Pandas

Scikit-learn

TensorFlow

PyTorch

Tools

Databricks

Airflow

AWS EMR

Hadoop

Spark

AWS SageMaker

Job description

We're seeking a highly skilled, execution-focused Senior Data Scientist with a minimum of 5 years of experience. This role demands hands-on expertise in building, deploying, and optimizing machine learning models at scale, while working with big data technologies and modern cloud platforms. You will be responsible for driving data-driven solutions from experimentation to production, leveraging advanced tools and frameworks across Python, SQL, Spark, and AWS. The role requires strong technical depth, problem-solving ability, and ownership in delivering business impact through data science.

Responsibilities

• Design, build, and deploy scalable machine learning models into production systems.
• Develop advanced analytics and predictive models using Python, SQL, and popular ML/DL frameworks (Pandas, Scikit-learn, TensorFlow, PyTorch).
• Leverage Databricks, Apache Spark, and Hadoop for large-scale data processing and model training.
• Implement workflows and pipelines using Airflow and AWS EMR for automation and orchestration.
• Collaborate with engineering teams to integrate models into cloud-based applications on AWS.
• Optimize query performance, storage usage, and data pipelines for efficiency.
• Conduct end-to-end experiments, including data preprocessing, feature engineering, model training, validation, and deployment.
• Drive initiatives independently with high ownership and accountability.
• Stay up to date with industry best practices in machine learning, big data, and cloud-native deployments.

• Minimum 5 years of experience in Data Science or Applied Machine Learning.
• Strong proficiency in Python, SQL, and ML libraries (Pandas, Scikit-learn, TensorFlow, PyTorch).
• Proven expertise in deploying ML models into production systems.
• Experience with big data platforms (Hadoop, Spark) and distributed data processing.
• Hands-on experience with Databricks, Airflow, and AWS EMR.
• Strong knowledge of AWS cloud services (S3, Lambda, SageMaker, EC2, etc.).
• Solid understanding of query optimization, storage systems, and data pipelines.
• Excellent problem-solving skills, with the ability to design scalable solutions.
• Strong communication and collaboration skills to work in cross-functional teams.

• Best-in-class salary: We hire strong talent and compensate accordingly.
• Proximity Talks: Meet and learn from designers, engineers, product leaders, and AI practitioners.
• Continuous learning: Work with a world-class team and stay close to the latest in AI, engineering, and product development.
• High-impact work: Build AI-first systems and products used at scale by global clients.

About Us

Proximity is the trusted technology, design, and consulting partner for some of the biggest Sports, Media, and Entertainment companies in the world. We're headquartered in San Francisco and have offices in Palo Alto, Dubai, Mumbai, and Bangalore. Since 2019, Proximity has built high-impact, scalable products used by millions of users every day. Today, we are a global team of engineers, designers, product managers, and experts solving complex problems and building cutting-edge technology at scale.