Senior Data Scientist

Kantar; Porto; Hybrid; EUR 45,000 - 65,000; Full time

Benefits offered by this job

Five days of Life Leave annually

Birthday leave

Two volunteer days

Enhanced family leave

Beach access during lunch breaks

Job summary

A leading insights firm in Porto seeks a skilled Senior Data Scientist to advance data-driven decision-making. You will develop and optimize machine learning models while analyzing complex datasets in a collaborative environment. The role demands expertise in Python, SQL, and machine learning concepts. This opportunity allows you to significantly impact business strategy and drive innovation while growing in a dynamic team. A hybrid work arrangement is offered, focusing on work-life balance.

Qualifications

• Proficiency in Python and experience with Git.
• Solid understanding of SQL and database technologies.
• Familiarity with machine learning algorithms and cloud platforms.

Responsibilities

• Design and implement machine learning models to solve business problems.
• Analyse large datasets to extract actionable insights.
• Collaborate with teams to integrate data solutions.

Skills

Python proficiency

Strong SQL skills

Machine learning algorithms knowledge

Experience with cloud platforms

Job description

Join to apply for the Senior Data Scientist role at Kantar

We’re the world’s leading data, insights, and consulting company; we shape the brands of tomorrow by better understanding people everywhere.

Kantar’s Profiles division is home to the world’s largest audience network. With access to 170m+ people in over 100 global markets, we offer unrivalled global reach with local relevancy. Validated by industry leading anti‑fraud technology, Kantar’s Profiles Audience Network delivers the most meaningful data with consistency, accuracy, and accountability – all at speed and scale.

About The Job

As a Senior Data Scientist, you will play a pivotal role in driving data‑driven decision‑making and shaping strategic initiatives. Your expertise will directly impact the organisation’s ability to understand client behaviour, refine predictive models, and deliver actionable insights that influence key business outcomes.

You will take on the responsibility of developing and optimising machine learning models, analysing complex datasets, and collaborating closely with cross‑functional teams to integrate data solutions into broader business strategies. Embedded within a dynamic Data Science team, you will not only contribute technical expertise but also foster innovation and knowledge‑sharing, making you an integral part of the company’s success. This role offers the opportunity to make a tangible difference and leave a lasting impact on the organisation’s growth.

Job Goals

• Design and implement advanced machine learning models to solve complex business problems.
• Optimise the performance of existing models and address weaknesses through detailed analysis.
• Collaborate with cross‑functional teams to integrate analytics solutions into business operations.
• Analyse large datasets to uncover patterns, trends, and insights that drive strategic decisions.
• Assist API integrations to ensure seamless functionality and data flow between systems.
• Communicate technical findings effectively to stakeholders through visualisations and clear reports.
• Establish and monitor key performance indicators to measure the impact of data‑driven initiatives.

Ideal Skills & Capabilities

• Proficiency in a programming language such as Python, with experience in using Git for version control.
• Strong SQL skills and familiarity with databases like Redshift, Postgres, or Microsoft SQL Server.
• Solid understanding of machine learning algorithms, concepts, and applications, including regression, K‑means, decision trees, neural networks, as well as exposure to generative AI and large language models (LLMs).
• Hands‑on experience with cloud platforms such as AWS or Azure.

What’s In It For You

• Five days of Life Leave per year; for those days when life just…gets in the way.
• Birthday leave – one extra day of holiday taken on the nearest workday to your birthday.
• Two days a year to give back and volunteer with an organisation of your choice.
• Enhanced primary and secondary carer leave for however you choose to grow your family.
• The chance to hit the beach on your lunch break (yes, we have somewhere you can store your surfboard!).

Please be aware, the majority of our roles are hybrid, working three days a week in our office.

We’re not able to offer visa sponsorship or help with relocation support for this role. Please make sure you’ve got the right to work in the country where this role is located before applying.

What part of Kantar might I be joining?

You’ll be joining our Profiles division, home to specialists in survey design, sampling and data science. With the world’s largest audience network (over 170 million people), we’re trusted by many of the world’s leading brands to provide amazing insights from real people. We shape the brands of tomorrow by better understanding people everywhere. By understanding people, we can understand what drives their decisions, actions, and aspirations on a global scale. And if we combine the expertise of our people with the latest AI technology, we can really help brands discover some amazing insights.

And because we know people, we like to make sure our own people are being looked after as well. Equality of opportunity for everyone is our highest priority and we support our colleagues to work in a way that works for them. We encourage applications from all backgrounds and sections of society. Even if you feel like you’re not an exact match, we’d love to receive your application and talk to you about this job or others at Kantar.

Privacy and Legal Statement

At Kantar, the diversity of our employees provides a richer environment for our employees and broader depth and breadth of thinking for our clients. Kantar is committed to inclusion and diversity; therefore, we welcome applications from all sections of society and do not discriminate based on age, race, religion, gender, pregnancy, sexual orientation, gender identity, disability, marital status, or any other legally protected characteristics.

PRIVACY DISCLOSURE: Please note that by applying to this opportunity you consent to the personal data you provide to us to be processed and retained by The Kantar Group Limited (“Kantar”). Your details will be kept on our Internal ATS (Applicant Tracking System) for as long as is necessary for the purposes of recruitment, which may include your details being shared with the hiring manager.

Seniority level

Mid‑Senior level

Employment type

Full‑time

Job function

Engineering and Information Technology

Industries

Market Research