Machine Learning Engineer

Remerge is a leading app retargeting company helping mobile app marketers increase revenue and retention through programmatic in-app ads. They are looking for a Machine Learning Engineer to develop high-performance ML models and optimize bidding algorithms in a real-time adtech environment.

Location: Remote (Global)

Responsibilities

• Develop & Scale ML Models: Build, train, and deploy high-performance machine learning prediction models optimized for real-time adtech environments.
• Own the Full ML Path: Take models from raw data and feature definitions through training, evaluation, and online serving. Feature engineering and online/offline consistency matter as much as modelling skill.
• Optimize the Bidding Engine: Design and refine complex bidding algorithms, orchestrating how multiple models interact together in milliseconds to make optimal final bidding decisions.
• Run & Analyze Experiments: Design, execute, and evaluate both offline simulations and online A/B tests to measure and analyze algorithmic impact on core business metrics.
• Collaborate Cross-Functionally: Step outside the traditional ML silo to collaborate with engineering and product partners, adapting quickly to diverse technical challenges.
• Augment Your Workflow: Actively integrate new AI tools and coding agents into your daily process to maximize throughput, experiment velocity, and code quality.

Requirements

• Strong proficiency in Python and TensorFlow for building ML models.
• Comfortable reading Go to navigate online serving services.
• Interest or experience in reinforcement learning, control engineering, mathematical optimization, or causal inference.
• Data-driven approach to problem-solving and pragmatic use of models.
• Ownership mindset with ability to take projects from experimentation to production.
• Curiosity about AI evolution and enthusiasm for AI coding tools.

Benefits

• Unlimited vacation days.
• Work from home, office in Berlin, or remote work environment.
• Generous remuneration including virtual shares and education budget.
• Year-end bonus based on company performance.
• Opportunity to travel to global offices through Short Term Assignment program.
• Support for home office setup.
• Wellness benefits such as sports memberships and internet reimbursements.
• Company events including team lunches, celebrations, and trips.

Additional Information

• Remerge is an Equal Opportunity Employer.
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• Only official job openings are listed on remerge.io/careers.
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