Job Description

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.
Job Details
We are looking for a talented and experienced Senior Software Engineer to join our team. In this role, you will work across our internal platform to build scalable and robust micro services. You will collaborate closely with product managers, and other engineers to deliver performant and well-built APIs. Your expertise in Node, TypeScript, and backend systems will be key to driving impactful projects.
Key Responsibilities
Backend Development:Develop and maintain backend services using modern frameworks. Ensure data consistency and scalability with database integrations.
Collaboration and Stakeholder Engagement:Collaborate with cross-functional teams to understand reporting needs and data dependencies and ensure that reports are accurate, reliable, and delivered on schedule. Present insights and findings to technical and non-technical stakeholders in a clear and concise manner.

Key Qualifications
Backend Skills:Experience with TypeScript for strongly typed development. Experience building and maintaining scalable backend Node.js services using frameworks like Express. Familiarity with database systems (e.g., PostgreSQL, MongoDB) and ORMs (e.g., Prisma, Sequelize).
(Bonus) Authentication and Security:Hands-on experience with authentication systems like Auth0, Okta, or custom authentication flows. Strong understanding of security best practices for web applications.
Soft Skills:Excellent problem-solving skills and attention to detail. A proactive mindset to identify and address potential issues or opportunities. Strong written and verbal communication skills for presenting findings to stakeholders.

Nice-to-Have SkillsKnowledge of API development with REST or GraphQL. Understanding of event-driven architectures and message queues (e.g., Kafka, RabbitMQ). Knowledge of performance optimization tools and strategies for backend systems. Familiarity with testing frameworks (e.g., Jest, Cypress, Playwright) for unit, integration, and end-to-end testing. Familiarity with CI/CD pipelines and DevOps tools (e.g., GitHub Actions, Docker, Kubernetes). Exposure to cloud platforms such as AWS, Azure, or GCP.

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Country
United Kingdom
Why join Kantar?
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.
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 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.