Ofertes d'ocupació de Científic/a de Dades a Barcelona

• Nivell d'experiència---
• Tipus de contracteA temps complert
• Publicada12 de nov.

. Python TSQL Git Fintech Machine Learning Power BI Tableau

ROLE PURPOSE

The purpose of the Data Scientist role in our risk department is to enhance the company’s decision-making capabilities through data-driven insights. By leveraging machine learning, statistical analysis, and data science methodologies, the Data Scientist will contribute to developing and refining credit scoring models, collection models, product models and portfolio optimization strategies. This position is central to driving innovation and improving our risk management and product processes in a dynamic FinTech environment.

PRIMARY RESPONSIBILITIES

• Develop and optimize credit scoring models using statistical and machine learning techniques.
• Conduct data analysis to identify risk factors, assess customer creditworthiness, and product behaviour
• Create reports and visualizations to monitor model performance and portfolio quality.
• Collaborate with the IT team to deploy and support models in a production environment.
• Test and fine-tune models based on market changes, customer needs, and regulatory requirements.

KNOWLEDGE & SKILLS

Must-Have Skills:

• Proficiency in Python (Pandas, NumPy, Scikit-Learn).
• SQL skills to manage and analyze data through complex queries.
• Foundational knowledge of machine learning, including linear and logistic regression, decision trees, and random forests.
• Experience with advanced ML techniques (e.g., gradient boosting) and libraries such as XGBoost, LightGBM, or CatBoost.
• Git version control for code management.
• Solid understanding of statistics (variance, correlation, p-value, t-tests, etc.).

Nice-to-Have Skills:

• Familiarity with data visualization tools (Tableau, Power BI, Matplotlib, Seaborn).
• Understanding of regulatory requirements in Spain and Mexico’s lending sector, with knowledge of data protection laws.
• Experience with neural networks and deep learning libraries, such as PyTorch or TensorFlow.
• Ability to deal with external providers and to communicate in an appropriate & clear manner at different layers of the organization.

BENEFITS

💪 Private health and dental insurance

👟 Discounted gym membership

💻 Freedom to work from home two days a week

🍎 Kitchen with free coffee and fruit each Monday, Wednesday and Friday and snacks

🌍 Team building activities and work in an international and passionate environment

Don’t miss the opportunity to be part of a company that values innovation and talent!

Join us and take your career to the next level 🚀

• Flexibilitat horàriaSi
• Nivell d'experiència---
• Tipus de contracteA temps complert
• Publicada9 de nov.

. Python TSQL Cloud Coumputing Git AWS PostgreSQL Machine Learning Power BI Tableau

¿Buscando nuevos retos? ¿Quieres formar parte de nuestro equipo? 🚀

Desde Profile buscamos un/a Data Scientist con un perfil Mid-level para integrarse dentro de un equipo de analítica de datos. Serás responsable de la gestión, análisis y explotación de los datos energéticos de la compañía, contribuyendo al desarrollo de soluciones basadas en datos que impulsen la eficiencia operativa y la toma de decisiones estratégicas.

Este rol es ideal para una persona proactiva, con curiosidad técnica y motivación por crecer en un entorno dinámico y en plena redefinición

Con ilusión es como se cambian las cosas, y queremos contribuir a un futuro mejor gracias a la tecnología. Para conseguirlo no necesitamos héroes ni súper talentos, sino personas implicadas, motivadas, con muchas ganas de trabajar en equipo y de crecer dentro de este proyecto común que formamos todos/as.

Responsabilidades principales:

• Desarrollar y mantener modelos predictivos que optimicen procesos y anticipen comportamientos del sistema energético.
• Gestionar y analizar grandes volúmenes de datos provenientes de distintas fuentes: medidas, datos de productores y consumidores, entre otros.
• Garantizar la calidad, integridad y disponibilidad de los datos para su uso en análisis y toma de decisiones.
• Explorar, transformar y visualizar datos para generar insights de valor y apoyar a las distintas áreas del negocio.
• Colaborar con equipos multidisciplinarios (operaciones, ingeniería, negocio) para definir requerimientos y soluciones basadas en datos.
• Trabajar en entornos cloud (AWS), aprovechando sus herramientas y servicios para el procesamiento y modelado de datos.

¿Qué esperamos de ti?🔎

• Experiencia de 2 a 4 años como Data Scientist, Data Analyst o roles afines.
• Sólidos conocimientos en estadística, machine learning y modelado predictivo.
• Experiencia práctica con Python (pandas, numpy, scikit-learn, etc.) y herramientas de visualización (Power BI, Tableau, o similares).
• Experiencia en manejo de grandes volúmenes de datos y bases de datos relacionales / no relacionales (SQL, PostgreSQL, Redshift, etc.).
• Familiaridad con entornos cloud (AWS).
• Conocimientos de ETL, automatización de procesos y buenas prácticas de versionado (Git).
• Capacidad analítica, orientación a resultados y mentalidad colaborativa.

Se valorará

• Experiencia o conocimiento en el sector energético (mercados eléctricos, producción, consumo, eficiencia energética, etc.).
• Experiencia con servicios específicos de AWS (S3, Lambda, Glue, SageMaker, Redshift).
• Conocimiento de modelos de forecasting energético o series temporales.

VALORABLE certificado de discapacidad

Te damos buenas razones para unirte a nuestro equipo 🤼

• Garantizamos el equilibrio trabajo/vida. Disponemos de flexibilidad horaria, jornada intensiva los viernes y mejoramos tus vacaciones por cada año que pases con nosotros/as.
• Disponemos de retribución flexible. Puedes optimizar fiscalmente tu salario a través de cheques gourmet, seguro médico privado, tarjeta transporte, cheques guardería, formación, etc. Podrás beneficiarte de tantas ventajas como elijas y adaptarlas a tus necesidades.
• Te daremos la mejor acogida con un proceso de onboarding en el que te sentirás como en casa desde el minuto uno y también recibirás tu welcome pack.
• Reconocemos la aportación, implicación y compromiso de todos aquellos que ayudamos a crear un entorno de trabajo más agradable y profesional a través de nuestra plataforma de gamificación.
• Celebramos tu cumpleaños regalándote un cheque regalo de Amazon y te acompañamos en los momentos más especiales de tu vida con muchas otras sorpresas.
• Fomentamos un ambiente de trabajo en el que todos/as seamos felices. Nuestro equipo multidisciplinar de People & Culture trabaja día a día para aumentar el bienestar y la motivación de todas las personas que componemos Profile.
• Trabajamos para que todos/as tengamos las mismas oportunidades, combatir discriminaciones y fomentar la conciliación de la vida personal, familiar y laboral.

¡Conócenos!💛

Si tienes ganas de crecer y trabajar en un buen ambiente de trabajo, de manera cómoda y productiva, y ¿por qué no?, divertida. Te ofrecemos un gran número de ventajas para facilitarte esta decisión. Contáctanos y ¡te lo contamos!

Conócenos más sobre Profile en nuestra web www.profile.es

Puedes consultar aquí nuestra política de Privacidad y Gestión de Datos: https://profile.es/politicadeprivacidad/

• Flexibilitat horàriaSi
• Nivell d'experiència---
• Tipus de contracteA temps complert
• Publicada7 de nov.

Python Agile TSQL Azure Cloud Coumputing AWS Machine Learning Office

Wallapop is a Barcelona based scale-up driven by the purpose to empower people to embrace a more conscious and human way of consumption. We believe in a world where collaborative economy is mainstream. This is what drives us.

Wallapop operates in Spain, Italy and Portugal, offering a catalogue of several hundreds of millions of products and services. Powered by technical innovation and continuous improvement, we bring together the scale & trust of classifieds with the marketplace´s convenience & reach. Our mission is to enable a connected trade ecosystem, making 2nd-hand the norm through smart use of technology.

Backed by top investors such as Accel, Insight Partners & Naver Corp we bring our total valuation to 806 million EUR and are embarking on our international journey with the aim to become the world´s best unique goods trading platform.

The Challenge

The Wallapop platform generates tons of data and, with a mature data infrastructure already in place.The team is experiencing significant growth and, with many initiatives down the road, the opportunities are endless.

As a Data Scientist in the Wallapop you will be working on the Data Science initiatives aimed at improving the whole marketplace dynamics.

You will work closely with other Data Scientists, Product Managers, Engineers, UX Researchers, and Analysts to understand the product requirements and explore possible data and ML solutions. You will own the whole product lifecycle, from gathering the data needed to prototyping, building, evaluating, and iterating end-to-end solutions, all within Wallapop´s Data Platforms.

Additionally, you will have the opportunity to work on internal research projects, exploring new technologies and building PoCs that could ultimately become data products or insights, and be valuable for Wallapop.

What You Will Do
- Collect, clean, and analyze large datasets from diverse sources, including user behavior, transactions, and market trends.
- Develop and implement machine learning models to solve business problems, such as personalized recommendations, fraud detection, and pricing optimization.
- Work with multidisciplinary Product teams to identify opportunities and gather requirements (both in terms of product and tech).
- Own initiatives from start to deployment: ideation, data processing (ETL), modeling, testing, deployment, monitoring and iteration (w/ help from Engineering partners)
- Proactively suggest, research and prototype new ideas for data and ML solutions.
- Communicate complex data insights to both technical and non-technical audiences, including stakeholders involved in marketplace operations.

What We´re Looking For
- Bachelor or MsC degree in engineering, mathematics, statistics, physics, or another quantitative field.
- Strong coding skills (Python is a must, but other languages are also valued), capable of building robust data and ML software.
- Experience building complex data products and ML solutions to real-life problems in a production-oriented environment, identifying the right techniques to solve the problem at hand.
- Experience with common libraries and frameworks such as Pandas, Numpy, Scikit-learn, TensorFlow, Keras, PyTorch.
- Advanced in SQL, capable of getting the data required from the appropriate sources, and building and maintaining data pipelines if needed (experience in tools such as Airflow or DBT would be a plus).
- Excellent communication and presentation skills, with the ability to explain data insights to business stakeholders in the context of marketplace dynamics.

What Would Be A Plus
- Experience working with Search & Ranking models in production environments
- Experience working within an eCommerce or Marketplace platform, or in a product-tech company.
- Experience working within the Logistics, Trust & Safety or Customer Service domains.
- Experience working within the AWS cloud (Redshift, S3, Lambda), and with cloud MLaaS solutions such as Amazon SageMaker (preferably), but also Google Vertex AI, Microsoft Azure ML, and other MLOps tools (MLFlow, Flyte, Feast, Kubeflow, etc).

Do note that all our jobs are Barcelona based. We follow a hybrid model where flexibility rules. We commit to a minimum of 6 days per month in the office. Each team self-organizes to decide on cadence and in-person/remote rituals.

Wallapop is an equal-opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees as we want Wallapop to be a place for everyone.

We sponsor visa processes for international candidates when applicable and provide legal & admin support along the process combined with a competitive relocation package.

Additionally to the opportunity to contribute to an agile product set up and work together towards achieving our meaningful mission, we offer the following Perks & Benefits:
- Competitive phantom shares package for all employees
- Generous individual learning budget of 2k per year
- Group and individual English, Catalan & Spanish lessons as part of our working day
- Private Health Insurance with Alan
- Flexible working hours + intensive Fridays
- Flexible remuneration to deduct from gross salary (kindergarten/food/transport check)
- Gym & Wellness plan, including physiotherapist in the office
- Generous referral Program & Charity Donation
- Bonus for weddings & newborns
- Wallapop Renta (Tax income support)
- Monthly plan for free shipping, bumps & home-pick-up on our services
- Work anniversary Gifts and Birthday Surprises
- Contribution towards your WIFI in your monthly payroll
- One-off payment based on compensation package to go towards setting up your home office
- Relocation package (monetary support and legal advice) and visa sponsorship, if applicable
- 26 holidays per year
- TOP hardware of your choice (latest Apple or Windows)

• Flexibilitat horàriaSi
• Nivell d'experiència---
• Tipus de contracteA temps complert
• Publicada5 de nov.

. Python Agile TSQL Machine Learning

Pioneer of online flash sales since 2001 and key player in European e-commerce, Veepee collaborates with over 7,000 brands to offer highly discounted products available for a limited time. Operating across various sectors, including fashion, home, wine, travel or beauty... Veepee achieved a turnover of 3.3 billion euros incl. VAT in 2024 and employs 5,000 staff members across 10 countries.

📄 Job Description

As a Data Scientist, you’ll join our Data Science team, distributed across Paris, Lyon, Barcelona, and Brussels.

The team focuses on implementing, maintaining, and continuously improving our recommender systems.

Today, we deliver personalized sales recommendations to millions of users in real time—and we’re now scaling to include hundreds of thousands of products.

You will design and experiment with algorithms that power personalized recommendations across millions of users. Y

ou’ll work with large-scale behavioral and product data to build models that increase engagement and conversion, collaborating closely with ML and Data Engineers to move your ideas to production.

🎯 Responsibilities:

• Design, train, and evaluate recommender system models using state-of-the-art ML techniques
• Conduct in-depth data exploration and feature engineering to extract actionable insights
• Perform offline experiments and A/B tests to validate model impact on key business metrics
• Collaborate with ML Engineers to ensure smooth model deployment and monitoring
• Present findings and new approaches during Data Science Demos
  
  
  

👉 Requirements:

• Proficiency in Python (Pandas, NumPy, Scikit-Learn, etc.)Proficiency in SQL
• Foundational knowledge of Machine Learning
• Experience working with Machine Learning libraries (XGBoost, LightGBM, TensorFlow, PyTorch)
• Solid understanding of statistics, evaluation metrics, and experimentation design
• Prior experience with recommender systems or e-commerce is a strong plus
• Strong verbal and written English communication
  
  
  

✅ Benefits

• Be part of a dynamic and international team!
• Flexible schedule
• Team buildings & afterworks
  
  
  

⚙️ RECRUITMENT PROCESS

• 1️⃣ HR Interview
• 2️⃣ Technical Interview
• 3️⃣ Team ITW
  
  
  

All our positions are open to people with health conditions or impairments.

We are convinced that it is up to you to define the way you work, to develop yourself and to progress. At Veepee we guarantee that you can just be yourself! For the service of diversity and inclusion, Veepee is committed to reviewing all applications received on an equal basis.

🔗 Company

For more information about our ecosystem : https://careers.veepee.com/en/home-page-en/

❓ Who We Are

Veepeeᵀᵉᶜʰ is a tech community of 500 collaborators who play a key role in Veepee’s innovative strategy.

From Warsaw to Sevilla, through Brussels, Amsterdam, Paris, Lyon, Nantes, Nice, Barcelona, Madrid and Lausanne all our projects are developed in an agile environment with a wide skills variety where you’ll be sure to find your place, no matter the technology you work with.

If you love to try things why don’t you jump on this new adventure?

Need more info > https://careers.veepee.com/en/

Vente-privee.com processes the collected data to handle the recruitment process, and to evaluate your ability to carry out the job offered and your professional skills. You can learn more about our use of your data and your rights by reading our recruiting privacy policy.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

• Nivell d'experiència---
• Tipus de contracteA temps complert
• Publicada4 de nov.

. Python TSQL Azure C++ Cloud Coumputing AWS R MATLAB

Formació i Experiència

• Titulació superior en Ciència de dades, Bioenginyeria, Enginyeria Informàtica, Enginyeria de Telecomunicacions, Física, Matemàtiques o equivalent. 
• Màster o formació avançada en ciència de dades/intel·ligència artificial. 
• Experiència en tècniques avançades d’aprenentatge automàtic, incloent aprenentatge profund i processament del lenguatge natural.
• Experiència prèvia com a Data Scientist/AI engineer en el desenvolupament, validació i implementació d’algorismes en l’àmbit biomèdic: explotació de bases de dades, desenvolupament de models predictius, desenvolupament de soluciones de GenAI, agents…
• Experiència en la tutorització d’estudiants/mentoring o en rols similars de supervisió acadèmica/professional (valorable PhD, encara que no imprescindible). 
• Es valorarà positivament haver realitzat estades internacionals en formació o activitat professional.
  
  

Coneixements Tècnics

• Nivell avançat de programació Python (imprescindible), i valorats R, Matlab, C++, Java. 
• Coneixement i experiència en anàlisi de dades, neteja, preparació, preprocessament i visualització de dades.
• Experiència demostrable en el disseny i implementació de solucions d’IA generativa.
• Coneixements de SQL per a la gestió de bases de dades. 
• Es valorarà positivament tenir experiència treballant en entorns cloud (AWS, Azure) i els seus serveis de dades.
• Es valorarà positivament tenir coneixements d’estàndards de dades clíniques (OMOP, FHIR) i experiència en l’estructuració de dades hospitalàries
• Coneixements d’estadística avançada i anàlisi de dades.
  
  

Qué Oferim

• Incorporació immediata.
• Jornada completa de dilluns a divendres (37,5h)
• Retribució d’acord amb el perfil de la persona seleccionada.
• Beneficis socials: pla de compensació flexible, dies addicionals de vacances, descomptes en els menjadors dels centres de referència. 

• Nivell d'experiència---
• Tipus de contracteA temps complert
• Publicada16 d’oct.

Teletreball . Python

Join us as a Data Scientist

Want to do work that really matters?

At Checkatrade, we’re building the UK’s go-to home improvement marketplace. Every day, we help millions of homeowners find the right tradesperson for the job, fast, fair, and without the faff.

AI and data are at the core of that mission. We believe intelligence should drive every decision, workflow, and customer experience — helping trades win more work and homeowners get the right match, faster. We’re building an AI-powered Checkatrade where models, insights, and automation create real-world impact at scale.

As our next Data Scientist, based in Barcelona, you’ll join our Marketplace Team — the engine room where data meets behaviour. You’ll design intelligent systems that make our two-sided marketplace smarter and fairer: better search, faster matching, and more dynamic pricing. This isn’t about isolated modelling — it’s about shipping production-ready intelligence that directly shapes how millions of people find, choose, and hire trusted trades.

Forget long lists, here’s what you’ll actually spend your time on:

• Experimenting with LLM-based and retrieval-augmented models (RAG) to improve matching, ranking, and recommendations.
• Building prototypes that make our search and pricing systems more adaptive, efficient, and fair — powered by embeddings, reinforcement learning, and continuous feedback loops.
• Collaborating closely with engineers to productionise insights, ensuring our models aren’t just smart, but scalable and measurable in the real world.
• Working cross-functionally with product and platform teams to define how AI and data science integrate into every part of the marketplace experience.
• Contributing to our internal AI playbook — helping set the standards for experimentation, evaluation, and ethical AI in production environments.
  
  

It’s not about ticking every box. It’s about turning up curious, ready to crack on. You’ll do well here if you bring:

• Strong applied data science experience in modern Python stacks — PyTorch, TensorFlow, LangChain, or similar.
• Experience building and deploying production-grade models that solve real business problems.
• Comfort working across the spectrum — from quick-turn experiments to rigorous model evaluation and refinement.
• A pragmatic mindset: you know when to fine-tune, when to use off-the-shelf models, and when simpler is smarter.
• Curiosity, creativity, and a desire to turn data into tangible, measurable impact.
  
  

We believe great work deserves great rewards. Here’s just a taste:

• Great salary for the impact you make
• Annual bonus - get rewarded for your work
• Work your way - flexible, remote-friendly setup
• Lunch vouchers so you stay fuelled while you build
• Learning support for courses, certs and books to level up
• Real time off - generous annual leave plus local public holidays
  
  

Interviews will take place in Barcelona and you will be required to work in Barcelona 2 days per week.

If you require any reasonable adjustments during our interview process, please discuss them with your Talent Acquisition Partner.

If this sounds like the place where you can do your best work, we’d love to hear from you, even if you don’t tick every box

About Us

We’re Checkatrade – the UK’s leading platform for finding a tradesperson. With more than 50,000 trades listed and over 6 million reviews, we help homeowners get jobs done right and help tradespeople grow their business.

We’re growing fast, with big plans to become the go-to brand for home improvements. If you care about great work, take pride in the details, and want to make an impact, you’ll fit right in.

• Nivell d'experiència---
• Tipus de contracteA temps complert
• Publicada31 d’ag.

Python Agile Scrum Cloud Coumputing Jira AWS LESS Machine Learning .

We’re Adevinta, a global leader in digital marketplaces. Our household name brands, including Marktplaats in the Netherlands, mobile.de in Germany and leboncoin in France, reach hundreds of millions of people every month.

We’re all about matchmaking, and our sites help people find whatever they’re looking for in their local communities – whether it’s a car, an apartment, a sofa or a new job. Every connection made or item found makes a difference by creating a world where people share more and waste less.

Our brands are supported by global Tech Hubs in Barcelona, Amsterdam, Paris and Berlin. Their goal is to develop common global products and innovation platforms which all of our brands can use. This means using cutting edge technology to create highly scalable, customisable and secure products and components that free up development time and leverage our access to global data.

What You’ll Do & Who You Are

As an experienced Data Scientist, you will:

• Understand user needs and business opportunities and identify where Machine Learning can bring the greatest impact.
• Develop machine learning models from scratch or fine-tune existing ones.
• Train and test deep learning models.
• Team work using Agile methodology and be part of the end-to-end process, collaborate with other profiles in the team.
• Detect the data that may be useful in upcoming projects and verify whether this data already exists or needs to be tracked.
• Deliver incremental work, following lean product development principles.
• Share your knowledge with your colleagues to boost machine learning in Adevinta and strengthen our machine learning community.
• Identify challenges and growth for business.
  
  

Responsibilities

• Have experience applying machine learning and deep learning methods to:
• Develop solutions to address impactful business needs.
• Provide hands-on support in a range of Computer Vision and Natural Language Processing related tasks.
• Assure quality and robustness of data science outputs.
• Work with other team members to help productionize end-to-end ML solutions.
• Demonstrate a robust ethical framework and critical thinking skills when developing, implementing, or utilizing AI technologies.
• Experience in applying Generative AI technologies to solve business problems, while demonstrating a thorough understanding of its associated risks.
• Proficiency in Python with ability to translate ideas into prototypes.
• Experience working in cloud environment (e.g. AWS)
• Experience with Agile philosophies (e.g. Scrum) and project management tools (e.g.: JIRA).
• Have strong interpersonal communication skills to:
• Engage with stakeholders and understand business requirements.
• Clearly communicate complex ideas to both technical and non-technical audiences.
  

Benefits

Life at Adevinta comes with its perks! Our Adevintans enjoy the following benefits:

• An attractive Base Salary 💸
• Participation in our Short Term Incentive plan (annual bonus) 🏆
• Work From Anywhere: Enjoy up to 20 days a year of working from anywhere! Maybe not from the moon🌛well why not! just make sure you have internet connection! 🌍
• A 24/7 Employee Assistance Program for you and your family, because we care ❤️
• Win together, lose together is one of our key behaviours. At Adevinta you will find a collaborative environment with an opportunity to explore your potential and grow 🌱
  
  

On top of these, we also provide a range of locally relevant benefits. Wanna know more? Apply and ask our recruiters! ✨

Adevinta is an equal opportunity employer and we value diversity. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status or disability status.

If you feel like you don’t meet all of the requirements for this role but are interested, please consider applying anyway. Research suggests that women and individuals from underrepresented groups may self-select out of opportunities if they don’t meet 100% of the job requirements. We strongly encourage people from historically excluded groups to apply and look forward to speaking with you.