Senior Machine Learning Engineer (AdTech)

Location: Petah Tikva, Israel; hybrid work environment and candidates must be local to the posting location

Company

hirify.global provides mobile advertising and consumer experience technology connecting telecoms, advertisers, app publishers, and consumers.

What you will do

• Design, build, and deploy large-scale ML systems for ad ranking, click-through and conversion prediction, bid optimization, and next-best-action recommendations.
• Build and operate production ML pipelines covering feature engineering, distributed training, deployment, retraining, and monitoring.
• Process billions of events and serve predictions with low latency across DSP, offer wall, content media, notifications, and Ignite products.
• Optimize distributed training and inference for CPU/GPU utilization, latency, and cost.
• Partner with Data Science, Data Engineering, and product teams to ship models and run online experiments that improve business metrics.
• Apply current ML research to advertising, ranking, and audience modeling.

Requirements

• 8+ years of experience building and deploying production ML systems at scale.
• Experience with Python and strong software engineering fundamentals in data structures, algorithms, and system design.
• Hands-on experience with PyTorch, TensorFlow, or JAX.
• Experience with distributed data and compute systems such as Spark, Beam/Dataflow, or Flink.
• Experience building feature stores, data versioning, model monitoring, and automated retraining pipelines.
• Master's or Ph.D. in CS, ML, or a related field, or equivalent practical experience.

Nice to have

• Experience in AdTech, recommender systems, search and ranking, or real-time bidding.
• Experience with low-latency model serving and online learning.
• Familiarity with Databricks, Unity Catalog, semantic layers, or feature platforms.
• Experience applying LLMs and agentic systems to audience insight or optimization.
• Proficiency in Java, Scala, or C++.

Culture & Benefits

• Work in a hybrid environment tied to the Petah Tikva location.
• Collaborate across Data Science, Data Engineering, product, and advertising teams.
• Contribute to an AI-first transformation using unified, first-party device-level data.
• Work within a global organization with offices across the United States, Europe, Israel, and Asia.