Machine Learning Engineer I

Benefits

• Health insurance coverage
• Employee wellness program
• Life and disability insurance
• Retirement savings plan
• Paid holidays
• Sick time
• Vacation
• Annual bonuses
• Short-term incentives
• Long-term incentives
• Program-specific awards

Your new role

CNN is seeking a Machine Learning Engineer I to build and deploy ML systems that drive 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.

Responsibilities

• Build and deploy full lifecycles of machine learning systems in Python for CNN digital products, covering 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

Requirements

• 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

Technologies

• Python
• SQL
• scikit-learn
• Git
• MLflow
• REST APIs
• Docker
• Kubernetes
• AWS
• GCP
• Azure

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 and AI team sits at the intersection of journalism, technology, and user experience, building systems that help people discover and engage with the news that matters to them.

We are CNN. The world's most essential and engaging source of digital news

We are undergoing a rapid transformation and seek the next generation of innovators, makers, and dreamers who will lead and drive our growth. Our aim is to make the world a better, more connected place.

How we get things done

Here at WBD, guiding principles are central to how we operate and how work gets done. You can find them at www.wbd.com/guiding-principles/ along with insights from the team about what they mean in day-to-day activity. We look forward to discussing them during your interview.

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 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, genetic information, marital status, citizenship status.

If you’re a qualified candidate with a disability and you require adjustments or accommodations during the job application and recruitment process, please visit our accessibility page for instructions to submit your request.