Machine Learning Engineer I

Warner Bros. Discovery; New York (NY); On-site; USD 99,400 - 184,600; Full time

Benefits offered by this job

Health insurance coverage

Employee wellness program

Paid holidays and vacation

Job summary

Warner Bros. Discovery is seeking a Machine Learning Engineer I to build and deploy ML systems that enhance personalization, search, and recommendations across CNN's digital platforms. The role requires collaboration with engineering and data science teams to deliver impactful production ML systems.

The ideal candidate will have a graduate degree in a relevant field, strong Python skills, and over a year of experience deploying ML systems. This position includes a competitive salary range of $99,400.00 - $184,600.00 per year and comprehensive benefits.

Qualifications

• 1+ years of professional experience building and deploying machine learning systems in production environments.
• Experience working on large-scale consumer internet products.
• Solid understanding of software engineering best practices.

Responsibilities

• Build and deploy full-lifecycle machine learning systems in Python for CNN digital products.
• Develop and maintain production ML pipelines.
• Implement rigorous experimentation and A/B testing frameworks.

Skills

Python programming

ML frameworks (scikit-learn)

Data preprocessing

Feature engineering

A/B testing

Communication skills

Education

Graduate degree in Computer Science, Mathematics, Statistics, Engineering

Tools

Git

MLflow

Job description

About CNN Digital

CNN Digital is a global leader in news and information, reaching millions of users daily across web, mobile, and connected TV platforms. Our ML/AI team works at the intersection of journalism, technology, and user experience, building systems that help people discover and engage with the news that matters to them.

Your New Role

CNN is seeking a Machine Learning Engineer I to build and deploy ML systems that power personalization, search, recommendations, and content understanding for millions of users across CNN's digital platforms. You will work on production ML systems with measurable product impact, collaborating with cross‑functional teams of engineers, data scientists, product managers, and editorial staff.

Your Role Accountabilities

• Build and deploy full‑lifecycle machine learning systems in Python for CNN digital products, including personalization, search, recommendations, and content understanding
• Develop and maintain production ML pipelines, including feature engineering, model training, evaluation, and serving infrastructure
• Implement rigorous experimentation and A/B testing frameworks to validate model performance and product impact
• Optimize ML systems for real‑time, web‑scale performance serving millions of users
• Partner with platform and infrastructure teams to ensure ML systems meet reliability, scalability, and performance standards
• Contribute to code reviews, documentation, and team knowledge sharing

Qualifications & Experience

Required Qualifications

• Graduate degree (MS or PhD) in Computer Science, Mathematics, Statistics, Engineering, or a related quantitative field
• 1+ years of professional experience building and deploying machine learning systems in production environments
• Strong Python programming skills and experience with machine learning frameworks (e.g., scikit‑learn or similar)
• Experience across the full ML lifecycle, including data preprocessing, feature engineering, model training, evaluation, and deployment
• Solid understanding of software engineering best practices, including version control, testing, and CI/CD
• Ability to collaborate effectively with cross‑functional partners
• Strong communication skills, with the ability to explain technical concepts to non‑technical stakeholders

Preferred Experience

• Experience working on large‑scale consumer internet products (e.g., social, streaming, e‑commerce, media)
• Hands‑on experience with recommendation systems, search, NLP, or information retrieval
• Familiarity with data pipelines, feature stores, or embedding infrastructure
• Experience with experimentation platforms, A/B testing, and experimentation analysis
• Knowledge of cloud platforms (AWS, GCP, or Azure) and containerization tools (Docker, Kubernetes)
• Interest in generative AI applications and/or the media and news industry

Technical Skills

• Languages: Python (required), SQL
• ML Frameworks: scikit‑learn or similar
• Tools: Git, MLflow or similar MLOps tools
• Data: Experience working with large datasets, distributed processing, and feature engineering
• Deployment: REST APIs, model serving, monitoring, and observability

Championing Inclusion at WBD

Warner Bros. Discovery embraces the opportunity to build a workforce that reflects a wide array of perspectives, backgrounds and experiences. Being an equal opportunity employer means that we take seriously our responsibility to consider qualified candidates on the basis of merit, without regard to race, color, religion, national origin, gender, sexual orientation, gender identity or expression, age, mental or physical disability, and genetic information, marital status, citizenship status, military status, protected veteran status or any other category protected by law.

If you’re a qualified candidate with a disability and you require adjustments or accommodations during the job application and/or recruitment process, please visit our accessibility page (https://careers.wbd.com/global/en/accessibility) for instructions to submit your request.

Compensation and Benefits

In compliance with local law, we are disclosing the compensation, or a range thereof, for roles in locations where legally required. Actual salaries will vary based on several factors, including but not limited to external market data, internal equity, location, skill set, experience, and/or performance. Base pay is just one component of Warner Bros. Discovery’s total compensation package for employees. Pay Range: $99,400.00 - $184,600.00 salary per year. Other rewards may include annual bonuses, short- and long‑term incentives, and program‑specific awards. In addition, Warner Bros. Discovery provides a variety of benefits to employees, including health insurance coverage, an employee wellness program, life and disability insurance, a retirement savings plan, paid holidays and sick time and vacation.