Data Scientist – LLM Expert

WomenTech Network; Madrid; Presencial; EUR 40.000 - 60.000; Jornada completa

Descripción de la vacante

A leading technology company in Madrid is seeking an Associate Data Scientist to join its AI Innovation Hub. The role involves collaborating with senior data scientists and engineers to design and validate scalable AI solutions. Candidates should have 2–4 years of experience in data science, solid Python skills, and a passion for continuous learning. This role offers opportunities to work with cutting-edge technologies in a dynamic environment.

Servicios

Employee learning programs

Access to industry certifications

Volunteering and giving platform

Formación

• 2–4 years of experience in data science, advanced analytics, or machine learning projects.
• Practical experience building and validating models for classification, regression, or segmentation tasks.
• Solid skills in Python and core data science libraries.

Responsabilidades

• Collaborate with senior scientists to develop and validate machine learning models.
• Participate in the end-to-end model lifecycle.
• Contribute to feature engineering and exploratory analysis.

Conocimientos

Python

Pandas

NumPy

Scikit-learn

Matplotlib

XGBoost

LightGBM

TensorFlow

PyTorch

Educación

Bachelor’s degree in Computer Engineering, Mathematics, Statistics, Physics, or Data Science

Master’s degree in Artificial Intelligence or Data Analytics

Herramientas

Azure ML

Vertex AI

SageMaker

Databricks

Descripción del empleo

Who We Are

At Kyndryl, we design, build, manage and modernize the mission‑critical technology systems that the world depends on every day. So why work at Kyndryl? We are always moving forward – always pushing ourselves to go further in our efforts to build a more equitable, inclusive world for our employees, our customers and our communities.

The Role

We’re looking for exceptional talent to join our AI Agentic Innovation Hub at Kyndryl!

The AI Agentic Innovation Hub stands as Kyndryl’s center of excellence for advanced and agentic artificial intelligence. Our mission is to lead the design and deployment of transformative AI solutions that bridge frontier research with real‑world impact — scalable, secure, and driven by measurable value.

Built upon a team of exceptional talent and cutting‑edge technology, the Hub embodies a spirit of bold innovation and disciplined execution — an elite unit within one of the world’s leading technology companies. With national reach and global ambition, we partner with major organizations to tackle their most complex challenges, pioneering the next generation of intelligent, autonomous, and trusted systems that redefine what AI can achieve.

Job Description

As an Associate Data Scientist at Kyndryl’s AI Innovation Hub, you’ll be part of a team that turns data into intelligent, high‑impact solutions.

You’ll collaborate with senior data scientists, ML engineers, and AI architects to design, train, and validate predictive and machine learning models that tackle real business and operational challenges.

You’ll participate in every stage of the model lifecycle — from data exploration and feature engineering to modeling, evaluation, and documentation — helping transform raw data into actionable insights.

This is a hands‑on, learning‑focused role in which you’ll work with modern technologies, contribute to scalable AI solutions, and grow your expertise within an environment that values experimentation, rigor, and curiosity.

If you’re passionate about data, eager to learn from experienced professionals, and ready to contribute to cutting‑edge AI initiatives for leading global clients, this is your opportunity to build the foundation of your career in applied data science.

Your Mission

Collaborate with senior scientists and engineers to develop and validate machine learning and predictive models.

Participate in the end‑to‑end model lifecycle— from data collection and preparation to training, evaluation, and documentation.

Contribute to feature engineering, exploratory analysis, and performance optimization of models.

Apply statistical and analytical techniques to extract meaningful patterns and insights from data.

Assist in model deployment and monitoring within MLOps environments and cloud platforms.

Document experiments and ensure transparency, reproducibility, and traceability of results.

Stay up to date with new algorithms, frameworks, and best practices in data science and applied AI.

Actively contribute to a collaborative, knowledge‑sharing culture within the Hub.

Who You Are

Essential Qualifications

2–4 years of experience in data science, advanced analytics, or machine learning projects.

Practical experience building and validating models for classification, regression, or segmentation tasks.

Solid skills in Python and core data science libraries (Pandas, NumPy, Scikit‑learn, Matplotlib, XGBoost, LightGBM).

Familiarity with neural networks and deep learning frameworks (TensorFlow, PyTorch).

Strong understanding of data preprocessing, handling missing values, unbalanced datasets, and outlier detection.

Experience with model evaluation and validation (ROC, AUC, F1, RMSE, precision, recall, cross‑validation).

Basic knowledge of cloud AI platforms (Azure ML, Vertex AI, SageMaker, Databricks).

Awareness of model versioning and experiment tracking tools (MLflow, DVC).

Understanding of Responsible AI concepts — bias mitigation, transparency, and interpretability.

Education & Certifications

Bachelor’s degree in Computer Engineering, Mathematics, Statistics, Physics, Data Science, or related field.

Postgraduate or Master’s degree in Artificial Intelligence, Machine Learning, or Data Analytics is valued.

Complementary training or certifications in Machine Learning, Data Science, or MLOps are a plus.

Demonstrated interest in continuous learning and professional growth in applied AI.

Preferred Skills

Exposure to data pipelines, ETL processes, and data preparation workflows.

Familiarity with SQL / NoSQL databases and working with APIs for data access.

Experience supporting model integration and testing within production environments.

Curiosity for new algorithms, frameworks, and emerging tools in AI and MLOps.

Experience with data visualization and presentation of insights to cross‑functional teams.

Ability to collaborate effectively in agile, fast‑paced environments.

Soft Skills

Analytical curiosity and a scientific mindset, eager to understand problems deeply and find evidence‑based solutions.

Clear and structured communication, both in technical documentation and team collaboration.

Logical and organized thinking, applying rigorous methodologies to problem‑solving.

Collaborative spirit, working proactively with technical and business profiles to deliver results.

Attention to detail and quality, ensuring reproducibility and reliability in models and analyses.

Continuous learning attitude, exploring new techniques, algorithms, and tools to strengthen the Hub’s capabilities.

Adaptability and growth orientation, thriving in a dynamic, innovation‑driven environment.

Being You

Diversity is a whole lot more than what we look like or where we come from, it’s how we think and who we are. We welcome people of all cultures, backgrounds, and experiences. But we’re not doing it single‑handily : Our Kyndryl Inclusion Networks are only one of many ways we create a workplace where all Kyndryls can find and provide support and advice. This dedication to welcoming everyone into our company means that Kyndryl gives you – and everyone next to you – the ability to bring your whole self to work, individually and collectively, and support the activation of our equitable culture. That’s the Kyndryl Way.

What You Can Expect

With state‑of‑the‑art resources and Fortune 100 clients, every day is an opportunity to innovate, build new capabilities, new relationships, new processes, and new value. Kyndryl cares about your well‑being and prides itself on offering benefits that give you choice, reflect the diversity of our employees and support you and your family through the moments that matter – wherever you are in your life journey. Our employee learning programs give you access to the best learning in the industry to receive certifications, including Microsoft, Google, Amazon, Skillsoft, and many more. Through our company‑wide volunteering and giving platform, you can donate, start fundraisers, volunteer, and search over 2 million non‑profit organizations. At Kyndryl, we invest heavily in you, we want you to succeed so that together, we will all succeed.

Get Referred!

If you know someone that works at Kyndryl, when asked ‘How Did You Hear About Us’ during the application process, select ‘Employee Referral’ and enter your contact's Kyndryl email address.

#AgenticAI