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Senior/Staff ML Scientist - Bidding & Optimization (f/m/d)

adjoeBerlinadjoe
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Salary
Not listed
Job type
Full-time
Experience
Senior · 4+ yrs
Posted
2 Oct 2026
Status
Open · checked 7d ago

About this role

Senior/Staff ML Scientist - Bidding & Optimization (f/m/d) is a full-time position based in Berlin that suits an experienced machine learning professional specializing in real-time bidding, reinforcement learning, and auction mechanisms. This role is ideal for a candidate with advanced academic credentials and a strong background in production-level adtech systems.

Role Overview

The Data Science Research team at adjoe develops foundational algorithms for real-time bidding, budget pacing, and allocation mechanics. The position operates within a deep-tech layer utilizing reinforcement learning, control theory, and objective-based optimization to balance advertiser return on investment, platform health, and user relevance across global mobile advertising products.

Key Responsibilities

Build foundational algorithms governing real-time bidding, budget pacing, and allocation mechanics.
Translate academic papers and state-of-the-art research into robust, production-ready code for sub-millisecond latency.
Architect sophisticated auction mechanics, real-time bidding engines, and allocation algorithms.
Translate complex business constraints into mathematical objectives in collaboration with product managers and engineers.
Manage the full lifecycle of artificial intelligence capabilities from offline prototyping to real-time production environments handling tens of thousands of requests per second.
Drive the research direction of the team and mentor junior scientists.

Requirements

PhD in Computer Science, Statistics, Mathematics, Physics, or an MSc with extensive industry research, alongside peer-reviewed publications in fields such as Computational Advertising, Auction Theory, Mechanism Design, or Game Theory.
Minimum of 4 years of experience optimizing complex systems through automated algorithms in adtech, marketplaces, or high-frequency trading.
Deep theoretical and technical expertise in reinforcement learning, objective-based optimization, or control theory applied to bidding, pricing strategy, and budget pacing.
Proficiency in Python and experience with large-scale Bayesian inference and sparse, high-dimensional advertising data.
Proven track record of taking machine learning models from prototyping to low-latency production environments.

Skills and Tools

Python
PyTorch
Distributed architectures for large-scale Bayesian inference
Trino
Athena
Dedicated GPU infrastructure
Reinforcement learning, control theory, and objective-based optimization frameworks

Salary and Benefits

Relocation support to Hamburg, Germany for candidates applying from worldwide locations
Opportunity to work on infrastructure impacting hundreds of millions of users and billions of daily decisions
Collaboration with a diverse, global team representing over 40 countries

About the Company

adjoe constructs technologies for mobile app growth and monetization, offering two main products known as Playtime Arcade and adjoe Ads. The company operates across rewarded engagement and programmatic in-app advertising, reaching a large share of the global smartphone market and connecting advertisers, publishers, and hundreds of millions of users.

How to Apply

Interested candidates should apply directly on the official company careers page.

Skills and tech stack

Questions candidates ask

Where is the position located?

The job is based in Berlin, with relocation support provided to Hamburg, Germany for international applicants.

What qualifications are required for this role?

Candidates need a PhD in Computer Science, Statistics, Mathematics, or Physics, or an MSc with extensive industry research, plus peer-reviewed publications in relevant fields and at least four years of experience optimizing complex systems.

What technology stack does the team use?

The tech stack includes Python, PyTorch, distributed architectures for Bayesian inference, Trino, Athena, and dedicated GPU infrastructure.

Is visa sponsorship or relocation assistance available?

While visa sponsorship is not explicitly detailed, the company welcomes applications from talent worldwide and provides relocation support to Hamburg, Germany.

Ready to apply?

The application is on the official adjoe careers page.

Apply on company site