Principal Machine Learning Engineer – Almedia

[Machine Learning]
Berlin
August 21, 2025
Full Time
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Job Description

Almedia is the fastest-growing advertising company in Europe, according to the Financial Times. Based in the heart of Berlin, we offer mobile game and app developers unparalleled returns from rewarded user acquisition, engineering the future of UA with our data-driven approach and community of over 50 million users.

We’re looking for people who give a shit. Ambitious builders who want to make an impact. Almedia is on track to become Germany’s second ever bootstrapped unicorn, so we need people ready to grow their career as fast as we’re scaling the company that’s rewriting the rules of user acquisition.

Principal/Team Lead Machine Learning Engineer

  • We are seeking a Principal/Team Lead Machine Learning Engineer to guide our ML team.

  • In this role, you’ll combine technical depth with leadership to shape strategy, mentor engineers, and ensure ML delivers maximum business impact.

Types of problems you’ll be solving:

  • Driving the development of a best-in-class recommendation system

  • Steering solutions for pLTV challenges using causal ML and sequence modelling

  • Leading the design of adaptive reward schemes with Bayesian modelling to respond to player behaviours and market trends

Your role:

  • Define and own the ML strategy to accelerate Almedia’s growth

  • Lead and grow a high-performing ML team, fostering collaboration and technical excellence

  • Partner with product, engineering, and growth leaders to align ML priorities with company objectives

  • Ensure ML models are scalable, measurable, and directly tied to business outcomes

  • Cultivate a culture of experimentation, knowledge-sharing, and innovation within the team

You have:

  • Extensive experience leading ML initiatives end-to-end, with proven business impact in adtech or similar industries

  • Strong background in statistics, experimental design, and applied ML techniques

  • Proficiency in Python, SQL, and cloud-based ML workflows

  • Demonstrated ability to lead, mentor, and inspire technical teams

  • Excellent communication and storytelling skills to influence at the leadership level

Bonus points for:

  • Passion for gaming and a strong understanding of game mechanics and player engagement

  • Background in adtech, monetisation, or gambling platforms

  • Experience with key gaming metrics like pLTV, retention, and ROAS

Why Almedia?

  • Become an owner: As part of our virtual equity option policy, you’ll have the opportunity to share in Almedia’s success and growth.

  • Innovative and high-growth: Join a startup that has been profitable from day one and is rapidly scaling its impact in the Ad-Tech space.

  • Berlin Office & Collaborative Hub: Work primarily from our modern, centrally located Berlin office, designed to foster strong collaboration, team connection, and organic growth as we build together.

  • Other Benefits: Enjoy a range of benefits designed to support your well-being and growth, including weekly breakfast and lunch at the office, a public transport ticket, gym membership, language classes, and with more exciting additions on the horizon.

We believe in fostering talent, evaluating all skill levels during the hiring process, and providing a clear path for growth. Almedia is an equal opportunity employer. We embrace and celebrate diversity, and encourage individuals from all backgrounds to apply.

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