Junior Research Scientist
hace 18 horas
About the Company Playvalve is a vibrant fast-growing gaming studio with an eye on the future. Our mission is to build fun and relaxing games meant to last, and we do that by bringing together a team of experts who love what they do. Our talented designers, artists, engineers, marketeers and analysts have created several games delivering joy and entertainment to over 20M users across more than 12 languages and 90 countries. As a Principal Applied Scientist , you’ll bridge rigorous science with production impact. This is not a pure engineering role, we need someone who thinks like a scientist first : formulating hypotheses, designing experiments with statistical rigor, and building models grounded in solid mathematical foundations . We’re looking for someone who holds an advanced degree in a quantitative field , and has battle-tested their science in production environments . You should be equally comfortable working through the math behind a model as you are debugging production pipelines. Design and analyze controlled experiments (A/B tests, multi-armed bandits) with proper statistical rigor. Apply causal inference techniques to untangle correlation from causation in observational data. Stay current with research literature and bring cutting‑edge methods to production (when appropriate). Partner with Engineering to build real‑time decisioning APIs for game configuration and ad serving. Implement proper monitoring, evaluation frameworks, and fallback mechanisms. Ship models as stable services with clear performance guarantees. Build experimentation infrastructure and champion rigorous hypothesis testing across the org. Work with Product, Marketing, and Ad Monetization to prioritize high‑impact projects. Mentor other data scientists on scientific rigor. Establish standards for model evaluation, code quality, and documentation. PhD or MSc in Computer Science, Statistics, Applied Mathematics, Physics, Operations Research, or closely related quantitative field. ~7+ years in data science with 2+ years owning production ML systems. ~ Expert‑level Python and SQL; comfortable writing production‑quality code. ~ Strong grasp of experimentation design and statistical hypothesis testing (power analysis, multiple testing corrections, variance reduction techniques). ~ Demonstrated ability to read, critique, and apply research papers to real‑world problems. Experience with modern ML frameworks (TensorFlow, PyTorch, JAX, or similar) for deep learning and/or probabilistic programming (e.g., PyMC, Stan, TensorFlow Probability). Proficiency with cloud platforms (GCP, AWS, Azure) for data processing and model serving. Published research in top‑tier venues (NeurIPS, ICML, KDD, JMLR, etc.) or industry conferences. Subscription/SaaS: Churn prediction, upsell optimization, cohort analysis The Role: Own data science solutions from scratch with full autonomy. Based in Barcelona (office with terrace, BBQ, beer tap). Flexibility policy: the data team comes in regularly because they want to, not because they have to. Compensation & Perks: Competitive compensation based on experience, phantom stocks, relocation package, health insurance, ticket restaurant, unlimited vacations, regular company off‑sites. The Challenge: 15 games in market + ambitious pipeline.
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Senior Research Scientist
hace 16 horas
Barcelona, España Preply Inc. A tiempo completoSenior Applied AI Scientist (AI Learning)Employment Type Full time Location Type Hybrid Department Data We help people discover the magic of the perfect tutor, craft a personalized learning journey, and stay motivated to keep growing. Our approach is human-led, tech-enabled - and it’s creating real impact. Every Preply lesson sparks change, fuels ambition,...
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Research Scientist
hace 1 semana
barcelona, España Sincrotrón ALBA A tiempo completoA leading research institution in Barcelona is seeking a Research Scientist for a 2-year contract to engage in advanced projects related to Atomic Layer Deposition and synchrotron radiation. The successful candidate will lead maintenance and operational activities, as well as participate in the analysis and publication of research results. Ideal applicants...
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Junior Data Scientist
hace 6 horas
Barcelona, España Clarivate A tiempo completoJunior Data Scientist, Knowledge Management, Life Science Great opportunity for a Junior Data Scientist to join our Knowledge Management team in Barcelona. We are always looking for talented scientists to grow and develop our Knowledge Management team and currently we are looking for a junior data scientist who will work with our clients - ranging from...
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Sr. Research Scientist, Last Mile Science
hace 15 horas
barcelona, España Amazon A tiempo completoSr. Research Scientist, Last Mile Science Have you ever ordered a product on Amazon and when that box with the smile arrived you wondered how it got to you so fast? Have you wondered where it came from and how much Amazon to deliver it to you? If so, the WW Amazon Logistics, Business Analytics team is for you. We manage the delivery of tens of millions of...
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Sr. Research Scientist, Last Mile Science
hace 14 horas
Barcelona, España Amazon A tiempo completoSr. Research Scientist, Last Mile ScienceHave you ever ordered a product on Amazon and when that box with the smile arrived you wondered how it got to you so fast? Have you wondered where it came from and how much Amazon to deliver it to you?If so, the WW Amazon Logistics, Business Analytics team is for you. We manage the delivery of tens of millions of...
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Research Data Scientist
hace 1 semana
Barcelona, España AstraZeneca A tiempo completo**Research Data Scientist, AstraZeneca R&D, Applied Data Science, Barcelona** **About the job** - Develop a single platform to provide deep insights into IO (immuno-oncology) by integrating internal and external multi-modal data (e.g., single cell omics, proteomics, CRISPR etc.) into new or existing proprietary knowledge graphs - Build graph analytical...
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Computer Vision Applied Research Scientist
hace 1 semana
Barcelona, España Apple Inc. A tiempo completo**Computer Vision Applied Research Scientist**: **Description** **Minimum Qualifications** - Experience with Machine Learning (ML), with a particular emphasis on Computer Vision (CV) and Large Language Models (LLMs) - Published research in the field of Machine Learning, AI or Computer Vision - Ability to develop custom algorithms to solve specific computer...
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AI Research Scientist: Energy Systems
hace 2 semanas
Barcelona, España Eurecat - Technology Centre A tiempo completoA technology research center in Barcelona is seeking a skilled Data Scientist - AI Researcher to innovate in energy optimization through AI solutions. This role involves designing algorithms, researching new AI techniques, and leading project initiatives. Ideal candidates will have extensive experience in data science, proficiency in Python and relevant...
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AI Research Scientist
hace 1 semana
barcelona, España Axiomatic Ai A tiempo completoA pioneering AI research company in Barcelona seeks an AI Research Scientist to focus on formal methods for science. This role involves developing AI tools for the adoption of formal methods across scientific disciplines and requires a PhD in a relevant field and proficiency in Python. Ideal candidates will thrive in a collaborative, multidisciplinary...
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Postdoc Research Scientist
hace 1 semana
Barcelona, España Barcelona Supercomputing Center (BSC) A tiempo completo**Job Reference**: - 599_25_LS_LT_R3 **Position**: - Postdoc Research Scientist - Mechanistic Interpretability (R3) **Closing Date**: - Wednesday, 15 October, 2025 **Reference**: 599_25_LS_LT_R3 **Job title**: Postdoc Research Scientist - Mechanistic Interpretability (R3) **About BSC** - The Barcelona Supercomputing Center - Centro Nacional de...