Senior Data Scientist

Portugal, PT
Senior (4-6 Years)
Remote
English Required

What is this challenge about: - Partner with product and marketing teams to identify business challenges, define success metrics, and deliver data-driven insights that support strategic decision-making.

  • Lead the design, development, monitoring, and continuous improvement of statistical models focused on marketing spend optimization and product growth.
  • Translate complex analyses and model outputs into clear, compelling narratives and intuitive data visualizations for technical and non-technical stakeholders.
  • Independently prototype, validate, and iterate on new analytical approaches, turning hypotheses into actionable business recommendations.
  • Evaluate, select, and refine statistical and machine learning methodologies based on business context and technical suitability.
  • Collaborate closely with executive leadership (CEO/COO) and clients, ensuring effective communication and alignment throughout project delivery.
  • Contribute to a culture of collaboration, knowledge sharing, and continuous learning by mentoring peers and promoting best practices.
  • Travel nationally and internationally when required (estimated 0–15%), depending on project and organizational needs.

What we are looking for: - Proven experience operating as a Senior Data Scientist with the ability to lead complex initiatives independently.

  • Strong business acumen with the ability to translate data into strategic recommendations.
  • Excellent problem-solving skills, with a proactive, solution-oriented mindset.
  • Ability to influence product and marketing decisions through evidence-based insights.
  • Strong communication skills, with the ability to explain complex concepts to diverse audiences.
  • Empathetic, collaborative, self-organized, and comfortable taking ownership in a fast-paced environment.
  • Passion for continuous learning, building innovative solutions, and mentoring others.
  • Expert-level proficiency in Python or R, with hands-on experience developing statistical models for complex, multidimensional datasets.
  • Experience with statistical modeling libraries such as CausalImpact, RStan, or equivalent Bayesian and causal inference frameworks.
  • Advanced SQL skills for data extraction, transformation, and analysis.
  • Hands-on experience with at least one major cloud platform (AWS, Azure, or Google Cloud Platform).
  • Experience with modern data platforms such as Databricks and Snowflake is considered a plus.

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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