Americas Engineering \& Data About the role Great advertising connects merchants with customers who genuinely need what they're selling. As a Machine Learning Engineer focused on Ads, you'll build the targeting and personalization technology that makes these meaningful connections happen at scale. You'll develop sophisticated machine learning models that help merchants reach the right audience at exactly the right moment, creating advertising experiences that drive real business growth while respecting the customer experience. **Key Responsibilities:** Develop and optimize advanced machine learning models for ad targeting and personalization systems Analyze comprehensive ad performance data to identify optimization opportunities and maximize ad spend efficiency Collaborate closely with advertising teams to integrate ML solutions seamlessly into our ad platform Research and implement innovative algorithms and tools to enhance ad relevance and effectiveness Document technical insights and share best practices across engineering teams **Qualifications:** Extensive experience building and deploying machine learning models for advertising systems at scale Strong proficiency in ML frameworks including TensorFlow or PyTorch, with expert\-level Python programming skills Proven analytical skills for processing and extracting insights from large\-scale datasets Demonstrated problem\-solving abilities and innovative thinking in ad technology solutions Solid familiarity with ad platforms, A/B testing methodologies, and data\-driven decision making processes Experience with statistical methods and performance optimization for ML systems Ready to connect merchants with their perfect customers? Join the team that's making commerce better for everyone. At Shopify, we pride ourselves on moving quickly—not just in shipping, but in our hiring process as well. If you're ready to apply, please be prepared to interview with us within the week. Our goal is to complete the entire interview loop within 30 days. You will be expected to complete a live pair programming session, come prepared with your own IDE. This role may require on\-call work About Shopify Opportunity is not evenly distributed. Shopify puts independence within reach for anyone with a dream to start a business. We propel entrepreneurs and enterprises to scale the heights of their potential. Since 2006, we’ve grown to over 8,300 employees and generated over $1 trillion in sales for millions of merchants in 175 countries. This is life\-defining work that directly impacts people’s lives as much as it transforms your own. This is putting the power of the few in the hands of the many, is a future with more voices rather than fewer, and is creating more choices instead of an elite option. About you Moving at our pace brings a lot of change, complexity, and ambiguity—and a little bit of chaos. Shopifolk thrive on that and are comfortable being uncomfortable. That means Shopify is not the right place for everyone. **Before you apply, consider if you can:** Care deeply about what you do and about making commerce better for everyone Excel by seeking professional and personal hypergrowth Keep up with an unrelenting pace (the week, not the quarter) Be resilient and resourceful in face of ambiguity and thrive on (rather than endure) change Bring critical thought and opinion Use AI tools reflexively as part of your fundamental workflow Embrace differences and disagreement to get shit done and move forward Work digital\-first for your daily work Shopifyhttps://www.shopify.com We hire people, not resumes. If you think you’re right for the role, apply now. First things first We want to ensure you’re the type of person who will thrive here so we can move you quickly through our hiring process. Before completing the job application, please check all the statements that apply to you below: I care deeply about what I do I am always seeking new (sometimes uncomfortable) growth I thrive on change in an ambiguous environment I get shit done and can keep pace to ship weekly I have a history of being resilient and resourceful I want to make commerce better for everyone It looks like you might not be a great fit for Shopify at this time — while we encourge everyone to apply, we are looking for someone who can meet all these criteria.