# Staff Data Scientist (AdTech Expert) (f/m/d) at adjoe

> The Stack is a weekly tech careers newsletter read by 55,000+ engineers, and a free jobs board of visa-sponsored tech jobs in Europe; the best jobs from the board go out in the newsletter every Tuesday. This is one job from the board.

> Responsibilities: - Lead design and delivery of advanced tar

- **Company:** adjoe (https://jobs.trythestack.co/companies/adjoe)
- **Location:** Hamburg, Germany
- **Work arrangement:** Remote
- **Employment type:** Full-time
- **Experience level:** 10+ years
- **Visa sponsorship:** Offered, according to the listing
- **Key skills:** Deep Machine Learning, Ad Tech, Bidding Algorithms, LTV Prediction, AWS Athena, Spark, Ray, Distributed Data Processing, Bayesian Methods, Reinforcement Learning, Meta-Learning, A/B Testing, Software Engineering Best Practices, Python, GDCN, Targeting Models
- **Posted by employer:** 2026-04-27
- **Added to The Stack:** 2026-06-05
- **Status:** May no longer be active (posted more than 60 days ago)
- **Apply:** https://jobs.ashbyhq.com/adjoe/f2f88590-c489-4daa-ac08-7402f49b7d53 (the employer's own application page)
- **Human page:** https://jobs.trythestack.co/jobs/staff-data-scientist-adtech-expert-fmd-adjoe

## About the role

Responsibilities:
- Lead design and delivery of advanced targeting and relevance models (conversion, user quality, LTV) for real-time bidding.
- Research and implement policy optimization approaches (Bayesian methods, reinforcement learning, meta-learning) to improve bidding and allocation KPIs.
- Architect scalable model training and serving pipelines using distributed compute (Spark, Ray) and ensure rigorous A/B testing and rollout strategies.
- Mentor and upskill engineers and scientists; establish best practices for reproducibility, code quality and experiment design.
- Drive cross-functional collaboration to align ML solutions with product, monetization and privacy constraints.

Requirements:
- 10+ years of experience in machine learning with strong focus on ad tech, bidding algorithms or LTV/prediction systems.
- Deep expertise in modern ML (deep learning, Bayesian methods, RL, meta-learning) and production deployment at scale.
- Practical experience with distributed data processing (Spark, Ray), experimentation platforms and model serving infrastructure.
- Strong software engineering skills in Python, ability to mentor teams and communicate technical trade-offs to stakeholders.
- Track record of shipping impactful ML systems that improve business KPIs in fast-moving production environments.

## Responsibilities

Architect and refine relevance models and bidding policies to maximize business KPIs and user engagement. Mentor team members and implement meta-learning frameworks and rigorous A/B testing to optimize ad performance.

## Requirements

Requires over 7 years of professional experience with deep machine learning models specifically within the ad tech industry. Must be proficient in distributed data processing tools like Spark or Ray and have a strong background in bidding or LTV prediction algorithms.

## FAQ

- **Is this Staff Data Scientist (AdTech Expert) (f/m/d) role still open?** It was posted on 2026-04-27. Listings more than 30 days old may no longer be active, so check adjoe's site before applying.
- **Does adjoe offer visa sponsorship?** This listing is marked as offering visa sponsorship. Eligibility rules are set by the employer, so check the details on adjoe's site.
- **Where is this role located?** The listing gives the location as Hamburg, Germany. It is marked remote.
- **What skills does this role ask for?** The listing names: Deep Machine Learning, Ad Tech, Bidding Algorithms, LTV Prediction, AWS Athena, Spark, Ray, Distributed Data Processing, Bayesian Methods, Reinforcement Learning, Meta-Learning, A/B Testing, Software Engineering Best Practices, Python, GDCN, Targeting Models.

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## Notes for agents

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