Data Scientist @ Xenoss
1 week ago
What should you bring Experience: Proven track record in end-to-end machine learning model development, from data gathering and preprocessing to design ML pipelines, model training, fine-tuning, and deployment. Education: Master’s degree in Data Science, Machine Learning, Statistics, Computer Science, or a related field (PhD preferred). Technical skills: Experience with cloud services (AWS, Azure, etc.) and ML deployment tools. Proficiency in Python, specifically with the classical DS stack (NumPy, SciPy, Pandas, matplotlib, scikit-learn, etc.). Familiarity with statistical methods and techniques, including A/B testing. Familiarity with main Deep Learning tools and frameworks (TensorFlow/Keras, PyTorch). Familiarity with LLMs and their application in business settings. Experience with SQL, NoSQL, and Vector DB’s. Upper-Intermediate level of English (written and spoken). Analytical mindset: Strong problem-solving skills and ability to analyze complex datasets and derive meaningful insights. Communication Skills: Ability to translate technical insights into business language for non-technical stakeholders. Who we are Xenoss is an innovative AI Lab dedicated to delivering advanced AI solutions and services to enterprise clients from the MarTech sector. We tackle a broad spectrum of AI-related challenges, helping businesses with problems like user behavior prediction, content generation, NLP, audience segmentation, building, and fine-tuning LLMs, crafting complex data pipelines, etc. We work with Activision Blizzard, Toshiba, Verve Group, Voodoo Games, Telefonica, and other enterprises. We’re included in the top 100 software companies on the Inc. 5000 list. What will you get The opportunity to shape the future of a leading ad tech company. A collaborative and dynamic work environment with a focus on innovation. Competitive salary and benefits package. High level of freedom in decision-making The chance to work with a talented and passionate team. ,[Client ML projects: Work closely with enterprise clients to understand their unique needs and leverage AI to solve them. It includes problems like semantic analysis of natural texts, CAC minimization for global ads campaigns, UGC sentiment analysis, optimal budget distribution for global marketing teams, building RAG pipelines to extend LLM contexts, and others., Contribution to Xenoss AI/ML initiatives: Work with our AI group, focusing on building our ML-related toolset and developing the AI/ML community by running webinars, publishing case studies, and writing articles., Research: Stay up-to-date with the latest in AI/ML advancements and contribute to the continuous evolution of our AI capabilities.] Requirements: Machine Learning, Degree, Data science, PhD, Cloud, AWS, Azure, Python, NumPy, SciPy, pandas, Matplotlib, scikit-learn, Statistical methods, Testing, Deep learning, TensorFlow, Keras, PyTorch, SQL, NoSQL, Communication skills
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Content Lead
1 week ago
Remote, Wroclaw, Kyiv, Czech Republic Xenoss Full timeWho we are looking for 5+ years of experience in B2B content marketing (preferably tech, SaaS, or data/AI) A strong writing portfolio with examples of clear, structured, and authoritative content Editorial mindset: You can rewrite, restructure, and elevate existing drafts with ease Comfortable interviewing subject-matter experts and extracting...
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Senior Backend SDE
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Remote, Czech Republic Xenoss Full timeRequired skills: Professional Java experience 5+ years OOP/design patterns proficiency Experience building complex systems SQL/NoSQL database experience Familiar with AWS or GCP Experience in the AdTech domain. Nice to have: Experience with big data Experience with OLAP DB (Cassandra, Clickhouse) Experience with Neo4J English: B1 Who we are Xenoss...
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Senior Java AI Engineer – LLM
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Remote, Czech Republic Xenoss Full timeWhat should you bring 5+ years of experience as a backend or full-stack engineer(React FE), with deep expertise in Java Hands-on experience designing and implementing multi-agent systems in real-world environments Strong architectural thinking and ability to lead technical decisions end-to-end Experience working with APIs, modular service design, and...
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Senior Data Scientist @ hubQuest
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Remote, Warsaw, Czech Republic hubQuest Full timeWhat we expect 5+ years of professional experience in Data Science or ML Engineering, including production deployments MSc or PhD in Computer Science, Statistics, Mathematics, Physics, or related technical field Strong Python programming skills, including software engineering practices (OOP, modular code design, testing) Solid experience with ML frameworks...
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Senior Data Scientist
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Prague - Remote, Czech Republic Blackpoint Cyber Full time 60,000 - 120,000 per yearBlackpoint Cyber is the leading provider of world-class cybersecurity threat hunting, detection and remediation technology. Founded by former National Security Agency (NSA) cyber operations experts who applied their learnings to bring national security-grade technology solutions to commercial customers around the world, Blackpoint Cyber is in hyper-growth...
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Data Scientist Expert @ Upvanta
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Remote, Czech Republic Upvanta Full timeDoświadczenie w pracy na platformie Databricks. Umiejętność pracy z frameworkiem MLflow w zakresie budowania eksperymentów i wdrażania modeli na produkcję. Znajomość i doświadczenie w użyciu różnych algorytmów pod systemy rekomendacyjne oraz doświadczenie we wdrażaniu takich modeli. Bardzo dobra znajomość algorytmów machine i deep...
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Senior Data Scientist @ Shoper
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Remote, Kraków, Szczecin, Poznań, Czech Republic Shoper Full timeCo jest dla nas ważne? Min. 3 lata doświadczenia jako Data Scientist lub w podobnej roli. Znajomość języka Python i bibliotek DS (pandas, numpy, scikit-learn, matplotlib/seaborn). Doświadczenie w przetwarzaniu dużych zbiorów danych (PySpark, Ray, Hadoop, Spark). Bardzo dobra znajomość baz danych SQL oraz doświadczenie z ElasticSearch....
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Data Scientist
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Remote, Warszawa, Gdańsk, Wrocław, Białystok, Kraków, Czech Republic Addepto Full time🎯 What you’ll need to succeed in this role: At least 3+ years of proven commercial experience designing and implementing scalable AI solutions (Machine Learning, Predictive Modeling, Optimization, NLP, Computer Vision, GenAI). Proficiency in developing ML algorithms from scratch to production deployment. Strong programming skills in Python: writing...
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Senior Data Engineer @ Link Group
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Remote, Czech Republic Link Group Full timeRequired Skills & Experience 5–8 years of hands-on experience in data engineering or similar roles. Strong knowledge of AWS services such as S3, IAM, Redshift, SageMaker, Glue, Lambda, Step Functions, and CloudWatch. Practical experience with Databricks or similar platforms (e.g., Dataiku). Proficiency in Python or Java, SQL (preferably Redshift), Jenkins,...
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Senior Data Engineer @ 1dea
7 days ago
Remote, Czech Republic 1dea Full timemin 5 yrs of relevant experience Solid experience with AWS services (S3, IAM, Redshift, Sagemaker, Glue, Lambda, Step Functions, CloudWatch) Experience with platforms like Databricks, Dataiku Proficient in Python / Java, SQL – Redshift preferred, Jenkins, CloudFormation, Terraform, Git, Docker, 2-3 years of Spark – PySpark Good communication and SDLC...