Senior Data Scientist

Porto, Portugal; Braga, Portugal
Specialist (5+ Years)
Hybrid
English Required Portuguese Required Not Accepting Candidates Living Abroad

Diversified multinational group with retail, technology and investment businesses across Portugal. A newly created data unit is consolidating data from multiple business areas—retail, financial services, telecom, and digital platforms—to build data-driven products and services, initially for internal businesses and later for the broader market.

What you will do

  • Analyze and interpret large, complex datasets to generate actionable business insights.
  • Build, deploy, and monitor machine learning models that support strategic initiatives.
  • Collaborate with data engineers to ensure reliable, accessible, and well-structured data for model development.
  • Translate business needs into analytical questions and communicate results clearly to stakeholders.
  • Design and implement feature engineering strategies to enhance model effectiveness.
  • Develop and maintain pipelines for model training and evaluation.
  • Promote best practices in MLOps, ensuring scalability and performance in production.

Location and work model

  • Hybrid (2 days/week in the office, Porto / Braga)

  • Senior-level experience in Data Science or Machine Learning, preferably within the retail sector;

  • Bachelor’s or Master’s degree in Mathematics, Statistics, Computer Science, Engineering, or a related technical field;

  • Proven experience designing, validating, deploying, and monitoring Machine Learning models end to end;

  • Strong knowledge of feature engineering, model selection, tuning, evaluation, and lifecycle management;

  • Advanced proficiency in Python and SQL;

  • Experience with cloud-based data platforms such as AWS, Azure, or Google Cloud Platform;

  • Strong ability to translate retail and business challenges into practical, data-driven solutions;

  • Ability to manage complex and ambiguous problems with a high level of autonomy and ownership;

  • Strong communication skills and confidence presenting technical findings to non-technical stakeholders;

  • Analytical thinking, curiosity, creativity, and a continuous learning mindset.

Nice to have

  • MLOps
  • Amazon Web Services (AWS)
  • Google Cloud Platform (GCP)
  • Feature Engineering
  • Statistics
  • Experience in the retail sector
We connect IT professionals with projects that match their skills, professional experience, and goals, then we offer a career progression program, delivered by in-house specialists - our People Experience Partners - to guide them through our journey with us.

What we offer:

  • A project that matches your skills and ambitions, as well as your preferences for working policies and culture.
  • A competitive salary with awesome benefits and opportunities to leverage your knowledge and network to earn additional income.
  • An empowering and respectful work culture enriched with social and learning events.
  • A People Experience Partner specially assigned to you - your go-to career guide, responsible for supporting your growth, facilitating training, and ensuring your work-life balance at KWAN.
At KWAN, they make sure that I feel comfortable with the client I’m working for and that what I’m doing aligns with my career aspirations.
Luis Caldeira, DevOps @ KWAN
At KWAN, I’m given the space to be myself and do what I love. I have control over the projects I work on, as well as the direction of my career.
Pedro Fonseca, Front End Developer @ KWAN
I see my People Experience Partner as someone who is always available to provide me with motivation and constant feedback, which helps me be sure that I am in the right place.
Josimar dos Reis, Software Developer @ KWAN
I know that I’ve contributed to the growth of a company that truly values a “people first culture”, because my ideas, experiences, and individuality were always appreciated.
João Nascimento, Software Developer (KWAN Alumni)
My two years at KWAN were an incredible experience! From the start, I was welcomed into a warm and collaborative environment where I felt truly supported.
Laís Ortiz, Software Developer @ (KWAN Alumni)
Grab this opportunity, apply now!

What You Can Expect as a KWANer

Respect isn’t optional here

You’re trusted to deliver and supported to speak up.

Dedicated People Experience Partner

Someone accountable for your growth, not your allocation.

Continuous learning, built in

Learning that keeps pace with the systems you build.

Recognition that’s visible

Your impact doesn’t go unnoticed. Through our Rocket Points System, we constantly recognize your contributions.

A culture you can feel

From movie and quiz nights to dinners and our annual summer gathering, we don’t just work together - we build real connections.

Flexible spaces to work your way

Remote-first, with physical hubs when you want connection.

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