Principal Machine Learning Engineer

This isn’t your regular job. Almedia is a place where those who want to push harder can accelerate their careers faster than anywhere else. We’re aiming to become Germany’s second bootstrapped unicorn. Almedia is already Europe’s #3 fastest-growing company in 2025 (FT1000).

We are building the future of marketing by rewarding our community of over 70 million users for engaging with our advertisers’ products. We are offering a new way to acquire users for the biggest companies in the world.

Principal Machine Learning Engineer

You'll take ownership of the hardest ML problems across Almedia's products and growth. This is a hands-on role for someone who identifies what matters most, sets the technical direction, and drives it end to end with minimal oversight.

Types of problems you'll be solving

Designing and owning the strategy for user reward schemes at scale, across behaviour signals and market dynamics

Architecting real-time personalisation systems for reward values that operate at production scale

Defining how we detect and diagnose underperforming campaigns, and building the systems that act on it

Your role

Own end-to-end delivery of high-impact ML systems: from problem framing through to production and iteration

Set the technical bar for ML across the org, establishing best practices and raising the quality of decisions

Define where ML creates the most business value and align the roadmap accordingly

Apply advanced statistical and causal inference methods with rigour and production-readiness

Partner with product and engineering leadership to shape how technical capability maps to strategic priorities

You have

A strong track record of taking ambiguous, high-impact problems from first principles to production independently

Deep expertise in statistics, causal inference, and experimentation at scale

Mastery of Python and SQL, with extensive hands-on cloud and production systems experience

A history of setting technical direction and raising the bar for engineering teams around you

The communication range to influence both engineers and senior business stakeholders

Bonus points for

Passion for gaming and a strong intuition for player behaviour

Experience in adtech, monetisation platforms, or the gambling industry

Familiarity with gaming KPIs such as pLTV, retention, and ROAS

Why Almedia?

Scale With Almedia: Have a real impact and grow alongside a startup that has been profitable from day one.

High-Growth Environment: We encourage all staff to take ownership of projects and consistently raise the bar.

Do More, Get More: Generous bonus scheme to ensure great, proactive work is valued.