Senior Software Engineer

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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

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, Type
Script, and backend systems will be key to driving impactful projects.

Job Goals

Development

• Develop and maintain 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.

Skills

Ideal Skills & Capabilities

• Experience with Type
  Script for strongly typed development.
• Experience building and maintaining scalable backend Node. js services using frameworks like Express.
• Familiarity with database systems (e. g. , Postgre
  SQL, Mongo
  DB) 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 Skills

• Knowledge of API development with REST or Graph
  QL.
• Understanding of event‑driven architectures and message queues (e. g. , Kafka, Rabbit
  MQ).
• 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 Dev
  Ops tools (e. g. , Git
  Hub Actions, Docker, Kubernetes).
• Exposure to cloud platforms such as AWS, Azure, or GCP.

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 worlds leading brands to provide amazing insights from real people.

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 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 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.

Country

Portugal

Seniority level

Mid‑Senior level

Employment type

Full‑time

Job function

Engineering and Information Technology

Industries

Market Research

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