Senior Software Engineer

Kantar; Porto; Híbrido; EUR 60 000 - 90 000; Tempo integral

Vantagens oferecidas por esta oferta de emprego

Life Leave

Birthday leave

Volunteer days

Carer leave

Surfboard storage

Resumo da oferta

Kantar is seeking a Senior Software Engineer to help build and evolve core backend services powering our internal platforms, enabling teams to access accurate, timely data. You’ll design scalable systems and APIs using Node.js and TypeScript with a focus on reliability and performance.

You will collaborate with product and engineering teams, ensure data correctness and integration with PostgreSQL or MongoDB, and contribute to coding standards. This hybrid role requires two to three days in Porto.

Qualificações

• Strong experience building backend services with Node.js and TypeScript.
• Proficient with PostgreSQL or MongoDB and ORMs such as Prisma or Sequelize.
• Experience designing and maintaining REST and/or GraphQL APIs.
• Understanding of building secure, reliable backend systems.
• Clear communication and collaborative problem-solving.

Responsabilidades

• Design, build, and maintain scalable backend services using Node.js and TypeScript.
• Develop robust APIs to support internal platforms and reporting needs.
• Collaborate with product and engineering teams to understand requirements and deliver reliable solutions.
• Ensure data accuracy, consistency, and scalable integration with databases.
• Contribute to code quality, performance, and engineering standards.

Conhecimentos

Node.js

TypeScript

REST APIs

GraphQL

Communication

Ferramentas

PostgreSQL

MongoDB

Prisma

Sequelize

Descrição da oferta de emprego

Kantar is the world’s leading AI-native marketing data and analytics business and an indispensable brand partner to the world’s top companies. We combine the most meaningful attitudinal and behavioural data with deep expertise and advanced analytics to uncover how people think and act. We help clients understand what has happened and why and how to shape the marketing strategies that shape their future.

Kantar 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 Audience Network delivers the most meaningful data with consistency, accuracy, and accountability – all at speed and scale.

Why this role matters

We’re known for our data. You’ll help us turn it into technology that teams and clients can rely on.

At Kantar, technology plays a critical role in how we deliver trusted insights to the world’s leading brands. As a Senior Software Engineer, you’ll help build and evolve the core backend services that power our internal platforms, enabling teams across the business to access accurate, timely, and scalable data.

You’ll work on backend systems that need to be dependable and easy to evolve, collaborating closely with product managers and fellow engineers to deliver APIs that are well‑designed, performant, and built with long‑term quality in mind. This is a role where you’ll combine hands‑on engineering with collaboration and influence, shaping both the solutions you build and how the team builds them.

What you’ll be doing

• Designing, building, and maintaining scalable backend services using Node.js and TypeScript
• Developing robust APIs that support our internal platforms and reporting needs
• Working closely with product and engineering teams to understand requirements and deliver reliable solutions
• Ensuring data is accurate, consistent, and scalable through effective database integrations
• Contributing to code quality, performance, and practical engineering standards across the team

The skills and experience you’ll bring

• Strong experience building backend services using Node.js and TypeScript
• Confidence working with databases such as PostgreSQL or MongoDB, and ORMs like Prisma or Sequelize
• Experience designing and maintaining APIs (REST and/or GraphQL)
• An understanding of how to build secure, reliable backend systems
• Clear communication skills and a collaborative approach to problem‑solving

Nice to have (but not essential):

• Experience with authentication and security concepts
• Familiarity with event‑driven systems or messaging tools
• Exposure to testing frameworks, CI/CD pipelines, or cloud platforms

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 two to 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.