Senior Full Stack Engineer

We go beyond the obvious, using intelligence, passion and creativity to inspire new thinking and shape the world we live in.

To start a career that is out of the ordinary, please apply...

Job Details

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

About the job

We are seeking a Senior Full Stack Engineer to join our team and help build scalable, robust web applications. You’ll work across the entire technology stack and collaborate closely with product managers and engineers to deliver exceptional user experiences. Your expertise in TypeScript and backend systems will be critical to driving impactful projects!

Job Goals

• Backend Development: Design, develop, and maintain a distributed, event-driven microservice architecture for consumer-facing applications.

• Stakeholder Collaboration: Partner with stakeholders to refine requirements and prioritise solutions that solve real business problems.

• Clean Code: Write modular, maintainable, and testable code following industry best practices.

• Code Review: Conduct reviews to ensure quality, consistency, and knowledge sharing across the team.

• Testing: Implement unit and integration tests for both frontend and backend components to ensure reliability.

• Security: Apply security best practices and build safeguards against vulnerabilities and attacks.

• Frontend Development: Collaborate with designers and frontend engineers to deliver end-to-end features with excellent UX.

• Technical Leadership: Promote best practices, mentor team members, and contribute to a healthy engineering culture.

Ideal Skills & Capabilities

• Strong communication and collaboration skills.

• Proven experience with TypeScript for backend development.

• Expertise in building scalable backend systems using Node.js, Express, and RESTful APIs.

• Hands-on experience with relational and in-memory databases (PostgreSQL, Redis) and ORMs.

• Familiarity with Event-Driven Architecture (e.g., Kafka, RabbitMQ).

Nice to Have

• Experience in frontend development.

• Experience with authentication and authorisation (e.g., JWT, SSO).

• Knowledge of Ruby and its ecosystem.

• Familiarity with CI/CD pipelines and DevOps tools (GitHub Actions, Docker, Kubernetes).

• Exposure to cloud platforms such as AWS, Azure, or GCP.

Don’t worry if you don’t tick every box—enthusiasm and a willingness to learn are just as important as experience.

What’s in it for you

On top of all your normal benefits like holiday, meal cards and life assurance, we also offer:

• 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.

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Location

Porto, R. Dom João IPortugal

Kantar Rewards Statement

At Kantar we have an integrated way of rewarding our people based around a simple, clear and consistent set of principles. Our approach helps to ensure we are market competitive and also to support a pay for performance culture, where your reward and career progression opportunities are linked to what you deliver. 

 

We go beyond the obvious, using intelligence, passion and creativity to inspire new thinking and shape the world we live in. Apply for a career that’s out of the ordinary and join us. 

 

We want to create an equality of opportunity in a fair and supportive working environment where people feel included, accepted and are allowed to flourish in a space where their mental health and well being is taken into consideration. 

 

We want to create a more diverse community to expand our talent pool, be locally representative, drive diversity of thinking and better commercial outcomes. 

Kantar is the world’s leading data, insights and consulting company. We understand more about how people think, feel, shop, share, vote and view than anyone else. Combining our expertise in human understanding with advanced technologies, Kantar’s 30,000 people help the world’s leading organisations succeed and grow.