Sr. Machine Learning Engineer at pattern in Lehi, UT, US

Job description

• Are you obsessed with data, partner success, taking action, and changing the game? If you have a whole lot of hustle and a touch of nerd, come work with Pattern! We want you to use your skills to push one of the fastest-growing companies headquartered in the US to the top of the list.
• Pattern accelerates brands on global ecommerce marketplaces leveraging proprietary technology and AI. Utilizing more than 66 trillion data points, sophisticated machine learning and AI models, Pattern optimizes and automates all levers of ecommerce growth for global brands, including advertising, content management, logistics and fulfillment, pricing, forecasting and customer service. Hundreds of global brands depend on Pattern’s ecommerce acceleration platform every day to drive profitable revenue growth across 60+ global marketplaces—including Amazon, Walmart.com, Target.com, eBay, Tmall, TikTok Shop, JD, and Mercado Libre. To learn more, visit pattern.com or email press@pattern.com.
• Pattern has been named one of the fastest growing tech companies headquartered in North America by Deloitte and one of best-led companies by Inc. We place employee experience at the center of our business model and have been recognized as one of Newsweek’s Global Most Loved Workplaces®.
• We need a Senior Machine Learning Engineer to own evaluation systems and model-side quality improvements for Pattern's generative content platform, the system that produces AI-generated titles, bullets, A+ modules, and imagery across hundreds of thousands of listings. You will build reliable evaluation systems and improvements across non-deterministic systems and you will own the model-side work that acts on what those measurements find.
• This is a full-time role and will work a hybrid schedule based in Lehi, Utah.

Responsibilities

• Build and maintain the datasets, rubrics, and automated judges that evaluate the efficacy of changes to the content engine.
• Convert brand rejection reasons into structured, labeled training data that feeds the next round of model improvements.
• Find ways to quantify qualitative improvements to generated content.
• Decide and defend approval thresholds for generated content in partnership with data science and brand teams.
• Build quality gates that catch problematic outputs before they reach brand review, reducing rework cycles across the pipeline.

Requirements

• Strong code and system design experience in any language or stack.
• 3+ years owning production software services end to end.
• Formal statistics or machine learning training, or a defensible equivalent depth built on the job.
• Experience engineering systems with non-deterministic outputs, where correctness has to be measured rather than assumed.
• Nice to have: Fine-tuning experience (LoRA/PEFT), hands-on LLM or generative media production work, evaluation-system ownership, multimodal evaluation, e-commerce domain knowledge, human-labeling operations, or A/B testing infrastructure.

Skills

Required

• Evaluation system design
• Data labeling and training data creation
• Quantitative analysis
• Quality gate implementation

Preferred

• Fine-tuning (LoRA/PEFT)
• LLM or generative media production
• Evaluation-system ownership
• Multimodal evaluation
• E-commerce domain knowledge
• Human-labeling operations
• A/B testing infrastructure

Benefits

• Pattern offers big opportunities to make a difference in the ecommerce industry! We are a company full of talented people that evolves quickly and often. We set big goals, work tirelessly to achieve them, and we love our Pattern community. We also believe in having fun and balancing our lives, so we offer awesome benefits that include:
• - Unlimited PTO
• - Paid Holidays
• - Onsite Fitness Center
• - Company Paid Life Insurance
• - Casual Dress Code
• - Competitive Pay
• - Health, Vision, and Dental Insurance
• - 401(k) match. Pattern matches 100% of the first 3% in eligible compensation deferred and 50% of the next 2% in eligible compensation deferred.