Machine Learning Engineer (Adtech)

Location: Paris or Montpellier, France, with flexible remote options

Company

hirify.global is a global advertising technology company providing data-driven AI and machine learning solutions across search, social media, display, video, connected TV, and programmatic digital out-of-home advertising.

What you will do

• Build and deploy bid-optimization machine learning pipelines that integrate directly with ad buying platforms.
• Design statistical frameworks to evaluate and improve campaign KPI performance for brands and agencies.
• Develop production-grade backend services and APIs for exposing machine learning model outputs.
• Connect MCP servers to extend Outmax’s agentic offering with new data sources and actions.
• Own features end-to-end from ideation and scoping through deployment and iteration.

Requirements

• 3+ years of experience combining machine learning, data science, or backend engineering at an intermediate or senior level.
• Strong Python skills and the ability to write clean, production-ready code.
• Solid knowledge of statistics and machine learning, including model building, evaluation, and pipeline design.
• Experience owning features from design through production deployment in a small-team environment.
• Proficiency in English, both written and verbal, is essential.

Nice to have

• Experience with adtech platforms such as DSPs, SSPs, or campaign performance data.
• Hands-on experience with agentic AI frameworks or LLM tools such as MCP or LangChain.

Culture & Benefits

• Small team with high ownership and direct production impact.
• Flexible remote work options.
• AI assistance is encouraged for development, while maintaining production-quality engineering standards.