Senior Data Scientist / Senior Machine Learning Engineer - AI at Massive Scale

Help us push AI further — and fasterLoopMe's Data Science team builds production AI that powers real-time decisions for campaigns seen by hundreds of millions of people every day. We process billions of data points daily — and we don't just re-apply old tricks. We design and deploy genuinely novel machine learning systems, from idea to prototype to production.You'll join a high-trust team that has a 5-star Glassdoor rating led by Leonard Newnham, where your work moves fast, ships to production, and makes measurable impact. What you'll do: Design, build, and run large-scale ML pipelines that process terabytes of data Apply a mix of supervised learning, custom algorithms, and statistical modelling to real-world problems Ship production-grade Python code that's clear, documented, and tested Work in small, agile squads (3-4 people) with DS, ML, and engineering peers Partner with product and engineering to take models from idea → production → impact Work with Google Cloud, Docker, Kafka, Spark, Airflow, ElasticSearch, ClickHouse and more  What you bring: Bachelor's degree in Computer Science, Maths, Engineering, Physics or similar (MSc/PhD a plus) 4+ years' commercial Python experience Track record building ML pipelines that handle large-scale data Excellent communication skills — comfortable working across time zones A curious, scientific mindset — you ask "why?" and prove the answer Bonus if you have: Experience with adtech or real-time bidding Agile / Scrum experience Knowledge of high-availability infrastructure (ElasticSearch, Kafka, ClickHouse) Airflow expertise  About the Data Science Team:We're 17 ML engineers, data scientists, and data engineers, distributed across London, Poland, and Ukraine — acting as one team, not a satellite office.What sets us apart: Led by an experienced Chief Data Scientist who codes, leads, and listens Inclusive, supportive culture where ideas are heard and people stay Strong values: open communication, continual innovation, fair treatment, and high standards Track record of publishing award-winning research in automated bidding Don't just take our word for it — check our Glassdoor reviews (search "Data Scientist") for a real view of the culture. About LoopMe:LoopMe was founded to close the loop on brand advertising. Our platform combines AI, mobile data, and attribution to deliver measurable brand outcomes — from purchase intent to foot traffic. Founded in 2012, we now have offices in New York, London, Chicago, LA, Dnipro, Singapore, Beijing, Dubai and more. What we offer: Competitive salary + bonus Billions of real-world data points to work with daily Flexible remote/hybrid options Learning budget and career growth support Friendly, transparent culture with strong leadership  Hiring process: Intro with Talent Partner 30-min technical interview with Chief Data Scientist Panel with 2 team members (technical, culture & collaboration) Offer - usually within 48 hours of final round  Are you ready to design and deploy AI systems that run at truly massive scale?