jobs.pl/Job offers/IT - Software Development/Senior Machine Learning Engineer / Data Scientist
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Senior Machine Learning Engineer / Data Scientist

Bloomreach Bratislava, Slovakia
Full-time On-site work

Publication date: 31/08/2026

Bloomreach is seeking a seasoned Senior Machine Learning Engineer to own the design and implementation of cutting-edge AI and GenAI driven algorithmic components for contextual personalization, predictions and behavioral insights that are used to personalize digital experiences for our customers.

Responsibilities

Design, develop, and enhance ML/AI models which Predictions, Contextual Personalization and our new agentic workflows; Process historical data, product catalog and user behaviours to extract hidden relations and features; Conduct research to explore ongoing cutting-edge ML techniques and conduct a quick POC; Work closely with ML Engineers to integrate and scale ML components to a production-level that can handle terabytes of data; Continuously learn and stay up to date with the current state-of-the-art techniques by reading research papers and attending AI/ML conferences

Requirements

BS/MS degree in Computer Science or a related discipline with a strong mathematical foundation and excellent programming skills (primarily Python); At least 3 years of experience building ML-driven fast and scalable ML/analytical algorithms in a corporate/startup environment; Strong awareness and understanding of recent trends in Generative AI and LLMs; Strong understanding of various machine learning and natural language processing technologies, such as classification, information retrieval, clustering, knowledge graph, semi-supervised learning and ranking; Excellent exploratory data analysis skills with the ability to slice and dice data at scale using SQL in BigQuery; Good problem solving and analytical skills; Exposure to deep learning stack (PyTorch/Keras/TensorFlow) and techniques (Representation/Transfer Learning, RNN/LSTM, Transformers); Experience working with Big Data in a cloud based production environment (AWS/GCP/Azure); Effective communication skills in English, both verbally and in written form

Nice to have

Experience in working with GenAI stack

Benefits

A great deal of freedom and trust; Flexible working hours; Virtual-first with Bloomreach Hubs available across three continents; Company events; 5 paid days off to volunteer; People Development Program; Access to a resident communication coach; Leader Development Program; $1,500 professional education budget annually; Employee Assistance Program; Subscription to Calm; DisConnect days with one additional day off each quarter; Sports, yoga, and meditation opportunities; Extended parental leave up to 26 calendar weeks for Primary Caregivers; Restricted Stock Units or Stock Options; Company performance bonus; Employee referral bonus up to $3,000; Bloomversaries celebrated
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