Senior Data Analyst

Kantar; Greater London; Hybrid; GBP 45,000 - 65,000; Full time

Job summary

A global data insights leader is looking for a Senior Data Analyst to enhance the quality and consistency of survey panels. The role emphasizes data integrity and fraud detection. You will work collaboratively with various teams to analyze and report insights, making impactful decisions based on panellist behaviour. Ideal for someone with 5+ years in analytics and strong proficiency in Python and SQL. Join us to shape the future of market research while enjoying a flexible working environment.

Benefits

Collaborative environment

Opportunities for growth

Flexible working arrangements

Qualifications

• 5 years of experience in analytics, data mining, and reporting.
• Hands-on experience in fraud detection and anomaly detection.
• Strong proficiency in Python, SQL, and statistical techniques.

Responsibilities

• Analyse panellist behaviour and survey data to assess quality and detect fraud.
• Identify patterns and trends across markets and customer segments.
• Prototype new ideas and develop statistical models.

Skills

Analytics

Fraud detection

Python

SQL

Statistical techniques

Data mining

Problem-solving

Tools

AWS

Azure

PowerBI

Redshift

Git

Job description

Were the worlds leading data insights and consulting company; we shape the brands of tomorrow by better understanding people everywhere.

Kantars Profiles division is home to the worlds 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 Kantars Profiles Audience Network delivers the most meaningful data with consistency accuracy and accountability all at speed and scale.

Job Details

Kantar is seeking a highly motivated and experienced Senior Data Analyst to join our global team. This role is central to enhancing the quality and consistency of our 50 survey panels across 40 countries. These panels consist of opted‑in fully consented consumers who provide valuable insights through online surveys. Your mission: to assess and report on panellist quality, detect fraudulent activity and ensure the integrity of our data.

Incentivised surveys have become a target for online fraud with sophisticated attacks evolving rapidly. At Kantar we are committed to staying ahead of these threats by investing in advanced analytics and fraud detection capabilities. You’ll play a key role in protecting our data quality and delivering trusted insights to clients worldwide.

This is a high‑impact role with the opportunity to collaborate directly with Operational Commercial and Data Science leaders. You’ll work alongside a talented team of analysts, scientists, engineers and developers in a mission‑critical environment.

What You’ll Do

• Analyse panellist behaviour and survey data to assess quality and detect fraud.


• Identify patterns and trends across markets, time and customer segments.


• Prototype new ideas and develop statistical models to improve decision‑making.


• Collaborate with developers to implement scalable production‑ready analytics solutions.


• Improve monitoring and measurement of fraud detection systems.


• Contribute to the full data science lifecycle: from hypothesis generation to production‑ready analytics.


• Communicate insights clearly to technical and non‑technical stakeholders.


• Work with cross‑functional teams to drive better data quality and commercial outcomes.

What You’ll Bring

• 5 years of experience in analytics, data mining and reporting.


• Hands‑on experience in fraud detection, anomaly detection or similar quality‑focused domains.


• Strong proficiency in Python, SQL and statistical techniques.


• Experience with cloud platforms (AWS, Redshift, Azure) and git version control.


• Experience with model automation and Kafka.


• Familiarity with intermediate‑level statistics (e.g. probability, hypothesis testing, frequentist and Bayesian statistics).


• Proven ability to present insights using PowerBI and Excel.


• Strong problem‑solving skills and a collaborative mindset.


• Experience in industries with large consumer marketplaces (e.g. programmatic media, travel, financial services) is a plus.

Our Tech Stack

• AWS


• Redshift


• Postgres


• Grafana


• PowerBI

Note: While our current environment is AWS we are transitioning to Azure for new development.

Why Join Us

At Kantar you’ll be part of a global leader in data insights and consulting. You’ll work on meaningful challenges, contribute to cutting‑edge solutions and help shape the future of market research. We offer a collaborative environment with opportunities for growth and the chance to make a real impact.

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 by amplifying our in‑depth expertise of human understanding alongside ground‑breaking technology we can help brands find concrete insights that will help them succeed in our fast‑paced, ever‑shifting world.

Equality of opportunity for everyone is our highest priority and we support our colleagues to work in a way that supports their health and wellbeing. While we encourage teams to spend part of their working week in the office we understand no one size fits all; our approach is flexible to ensure everybody feels included, accepted and that we can win together. We’re dedicated to creating an inclusive culture and value the diversity of our people, clients, suppliers and communities and 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.

Candidates must have the right to work in the United Kingdom.