AI/Machine Learning Engineer

AI/Machine Learning Engineer 🏢 EPAM Systems 📍 Remote · Armenia 🕐 Full Time About the role We are seeking a proactive AI/Machine Learning Engineer to join our team and help design, build, and optimize recommendation and ranking systems at scale. In this role, you will develop models that drive personalized experiences, rigorously evaluate their performance, and collaborate closely with cross-functional teams to deliver impactful machine learning solutions in a modern cloud environment. What you’ll do 🗂 • Design and build recommendation and ranking models, including learning-to-rank, re-ranking, gradient-boosted, and neural rankers • Optimize models for multiple objectives, including analyzing Pareto-fronts to balance competing goals • Conduct offline evaluation of recommender systems using ranking metrics such as NDCG and recall@k • Address position and selection bias in logged data to ensure robust model performance • Apply statistical rigor through significance testing, confidence intervals, and A/B test and holdout design • Process and analyze large-scale behavioral and clickstream data What we’re looking for 🔎 • Strong background in statistics, including significance testing, confidence intervals, and A/B test and holdout design • Proficiency in Python and SQL • Skills in large-scale data processing with Spark, pandas, and polars • Competency in ML libraries such as scikit-learn, PyTorch, and LightGBM/XGBoost • Familiarity with cloud data platforms, preferably Databricks • Capability to write clean, tested, version-controlled code using Git How to apply 🙋 Open on ITA Jobs and apply → More IT vacancies in Armenia, matched to your CV — jobs.ita.am/vacancies #Data #Mid #Statistics