Senior Search Data Scientist - NLP

Our multi-award-winning FinTech client in Marbella is seeking a Senior Search Data Scientist - NLP to join their fast-growing team.

The company has several offices worldwide, and the successful Senior Search Data Scientist - NLP will be part of their team in Marbella.

Join our client:

Our client’s search engine is the gateway through which financial professionals access critical information. Their mission is to architect and build the most sophisticated, scalable, and intelligent search engine in the market.

To make this gateway truly intelligent, we are looking for an insightful and experienced Senior Search Data Scientist to join our Search Team. This is a strategic role designed for a scientist who is driven to understand the "why" behind every search, defining and building our relevance systems from the ground up. In an environment where user privacy is paramount, the intelligence of our search engine must come from a profound, first-principles understanding of our content.

You will own the full analytical and modeling lifecycle, from analyzing content and building gold-standard benchmarks, to developing the next generation of our relevance, ranking, and query understanding models.

This role is for a natural problem-solver who combines scientific rigor with product intuition, and who is passionate about seeing their insights directly translate into a smarter, more intuitive search experience.

European legal working status is required.

 Senior Search Data Scientist - NLP – What You’ll Be Doing:

• Become an Expert on Content: Dive deep into our vast corpus of documents, understanding its intrinsic properties. Build and maintain benchmark datasets, to serve as the core for all our improvements and initiatives.
• Translate Query Intent into Search intelligence: Work on the development of our query understanding capabilities. Develop and fine-tune a range of efficient Language Models for specialized tasks related to content enrichment and query understanding, such as Named Entity Recognition or topic classification.
• Build Advanced Relevance Features: Architect the features and models that power our core ranking and re-ranking systems, using insights derived from deep content and query analysis.
• Own the Science of Search Evaluation: Champion a culture of data-driven decision-making. You will design and analyze offline experiments and tests to prove the impact of our work and guide the product roadmap.
• Collaborate on Product Strategy: Act as a strategic partner to Product Managers and Engineers. Gather and analyse user feedback, identifying their information needs. Your analysis and insights will be critical in identifying new opportunities and shaping the future direction of our search and discovery products.

Senior Search Data Scientist - NLP - What We're Looking For

• A Master’s or PhD in a quantitative field (e.g., Computer Science, Physics, Mathematics) and 4+ years of professional experience in data science with a focus on Search or Recommender Systems.
• A proven track record of working on search relevance, ranking, query understanding or solving closely-related NLP problems.
• Demonstrable, hands-on experience building, fine-tuning, and evaluating a range of language models for specific tasks like classification, NER, and semantic similarity.
• Experience in experimental design and statistical analysis. Expertise in creating evaluation datasets and developing relevance guidelines. You know how to ask the right questions and how to design experiments that provide clear, statistically significant answers.
• A talent for structuring ambiguous problems and applying logical reasoning, translating complex challenges into clear, actionable plans.
• High proficiency in Python and data science libraries (e.g., Pandas, NumPy, Scikit-learn, PyTorch/TensorFlow, Hugging Face) and familiarity with SQL or other query languages.
• The ability to distill complex findings into clear, concise insights for diverse audiences, from engineers to executives. You are a collaborator by nature.

Please check out their exceptional benefits:

• Free yearly health checkup
• Hybrid mode with 3 days in-office available
• Enrolment in the public healthcare system
• Onsite fully equipped Gym 
• Free breakfast served every day
• Free snacks and drinks
• Onsite Recreation Lounge
• Free shuttle bus to work
• Office parking available
• Regular team building events to foster company culture
• Financial assistance for relocation
• Assistance with Legal paperwork

What's in it for you?

• Growth Opportunity: Join a team building AI that truly matters, contributing to making Gen-AI useful for finance and business research in a rapidly growing company with 180+ team members across offices in Marbella, Madrid and New York.
• International Culture: Be part of a diverse, global organization with a truly international culture.
• Team of Superstars: Work alongside a talented team of professionals, including Silicon Valley executives and Wall Street veterans.
• Competitive Compensation: We offer a highly competitive salary package and performance-based bonuses.
• Relocation Assistance: Comprehensive relocation support is available to help you and your family move to the beautiful Costa del Sol.
• Work-Life Balance: Enjoy paid vacation, flexible time-off, and a flexible work policy.
• Continuous learning: We provide the support needed to grow within the team.