Senior Machine Learning Engineer (AI)

TL;DR

Senior Machine Learning Engineer (AI): Designing and scaling machine learning systems to directly improve ad relevance, ranking, and optimization with an accent on deploying large-scale ML systems and operating production pipelines. Focus on diagnosing model performance, executing experiments that drive measurable results, and leading design and code reviews for technical excellence.

Location: Must be based in the United States (Menlo Park, CA or Seattle, WA)

Salary: $197,600 - $247,000 USD

Company

hirify.global builds powerful AI advertising solutions and a planet-scale machine learning platform to democratize advanced AI for businesses.

What you will do

• Design, build, and deploy large-scale ML systems for ad ranking, click-through prediction, and conversion optimization.
• Develop and operate production pipelines that process hundreds of millions of ad requests per day with low-latency requirements.
• Collaborate directly with customers and partners to understand business goals and deliver data-driven ML solutions.
• Apply systematic, reproducible approaches to model training, evaluation, and continuous improvement.
• Partner with Machine Learning Infrastructure and Data teams to improve tooling, deployment pipelines, and training efficiency.
• Lead design and code reviews to promote technical excellence and standardize ML practices across Ads teams.

Requirements

• 7+ years of experience building and deploying ML systems at scale, ideally in AdTech, recommender systems, or search/ranking domains.
• Fluency in Mandarin Chinese and skilled at collaborating with customers or partners in technical discussions.
• Strong software engineering fundamentals: data structures, algorithms, and system design.
• Proficiency in Python (C++ or Java a plus).
• Experience with modern ML frameworks such as PyTorch, TensorFlow, or JAX.
• Experience with distributed data and compute systems like Apache Beam, Dataflow, or Flume.

Culture & Benefits

• Competitive benefits package for United States residents.
• Work in an exciting period of growth for an AI advertising solutions company.
• Culture values humility, uncapped growth mindset, and creating real value.
• Emphasis on collaboration, accountability, and building scalable systems.
• Support for employee well-being and career development.
• Commitment to diversity, inclusion, and belonging.