Senior Data Scientist

Clarity AI; Comunidad de Madrid; Hybrid; EUR 50,000 - 70,000; Full time

Benefits offered by this job

Competitive salary

Flexible working conditions

Generous paid time off

Private healthcare coverage

Professional development budget

Job summary

A leading sustainability tech company in Madrid is seeking a Senior Data Scientist to enhance data-driven decision-making for global impact. The ideal candidate will have over 3 years of experience in Data Science, strong Python skills, and a commitment to sustainability. This role offers flexibility in working location and competitive compensation, making it a great opportunity for professionals passionate about making a difference through data science.

Qualifications

• 3+ years of experience working on Data Science products.
• Strong command of the Python data science ecosystem.
• Solid software engineering fundamentals.
• Excellent oral and written English communication skills.

Responsibilities

• Improve performance and lifecycle of production ML systems.
• Design and deploy end-to-end ML models.
• Lead proofs of concept for validating technical feasibility.
• Effectively communicate technical insights to stakeholders.

Skills

Python data science ecosystem

LLMs and agentic workflows

Sustainability commitment

Effective communication

Independence and motivation

Education

MSc/PhD in CS/EE/STEM

Tools

Pandas

Matplotlib

Scikit-Learn

Job description

About Clarity AI

Clarity AI is a global tech company founded in 2017 with a unique mission: bringing societal impact to markets. We leverage AI and machine learning technologies to provide top international investors, governments, companies, and consumers with the right data, methodologies, and tools to make more informed decisions. We are now a team of more than 300 highly passionate and curious individuals from all over the world, with offices in New York, Madrid, London, Paris, and Abu Dhabi. Together, we have established Clarity AI as a leading sustainability tech AI company backed by investors and strategic partners such as BlackRock, SoftBank, and Deutsche Börse.

We are dedicated to cultivating an exceptional workplace environment, and we take pride in our culture, defined by our commitment to being fact‑based, diverse, transparent, meritocratic, and flexible.

About the Role

We are looking for a Senior Data Scientist with a strong scientific mindset and relevant experience to help us bring societal impacts to market and make a difference. You would be part of a team of +20 international Data Scientists coming from top Academic Institutions and Tech Companies with a shared passion for data science and a growing mindset.

What You’ll Be Doing

• Improving the performance and lifecycle of production ML systems, ensuring scalability and rapid issue resolution.
• Collaboratively designing and deploying end‑to‑end ML models, LLMs, and agent systems that deliver transparent and accurate sustainability data to customers.
• Leading the strategy and execution of proofs of concept to validate technical feasibility.
• Translating business goals into technical requirements and proactively identifying new opportunities.
• Enabling decision‑making by effectively communicating technical insights to non‑technical stakeholders.

The role is based in Madrid (Remote / Hybrid).

What You’ll Need

• 3+ years of experience working on Data Science products.
• Strong command of the Python data science ecosystem (Pandas, Matplotlib, Scikit‑Learn, etc.).
• Proficiency working in collaborative codebases and scalable machine learning production environments.
• Solid software engineering fundamentals (testing, code review, design, performance).
• Up‑to‑date experience with LLMs, agentic workflows, prompt engineering, RAG, vector databases, evaluation, and safety guardrails.
• A strong commitment to sustainability and impact.
• A willingness to learn and share knowledge with the team.
• Transparency and a focus on effective, constructive communication.
• High motivation, independence, and a deep passion for making an impact through data science.
• Excellent oral and written English communication skills (minimum C1 level proficiency).
• Experience in a startup.
• MSc/PhD degree in CS/EE/STEM or related field.
• Experience with fintech/data products or sustainability/ESG domains.

What We Offer

• Competitive compensation, both in terms of base salary as well as equity plans that enable you to share in our success.
• Flexibility in ways of working both in terms of your schedule as well as your location, whether you prefer to work from home, the office, or abroad with access to a global network of co‑working spaces.
• Generous paid time off schemes, including vacation, sabbatical, religious observance and compensation days.
• Meaningful benefits including private healthcare coverage, fitness and wellness programs covered through Wellhub, working‑from‑home allowances to help you set up your home office and cover monthly expenses.
• Professional development with annual training budget for conferences, courses, certifications and access to top market e‑learning platforms.
• Collaborative environment with multiple offices around the globe, regular team activities and events as well as employee‑led resource groups.

About Clarity AI’s Leadership

Clarity AI’s Founder and CEO, Rebeca Minguela, is a successful entrepreneur who has been recognised by prestigious institutions such as the World Economic Forum as one of the most distinguished leaders under 40.

The leadership team has an international presence and is composed of professionals from leading tech, consulting, and banking firms, entrepreneurs, PhDs from top research institutions, and MBA graduates from top business schools.

Awards

• The Forrester New Wave – ESG Ratings, Data, and Analytics – Leaders for 2022‑2024
• Investment Week – Best Sustainable Investment Research & Ratings Provider 2023
• Fast Company – Most Innovative Companies 2023
• European Commission | EU Seal of Excellence 2020
• World Economic Forum – Technology Pioneer 2020

Diversity, Inclusion, and Belonging

Clarity AI believes diversity, inclusion, and belonging are essential for creating an innovative and successful workplace. By actively promoting and engaging in sustainability efforts, we can help create a more equitable and resilient future for our planet and all its inhabitants.