> Markdown version of [/jobs/ext/2812962-senior-software-engineer](https://www.wearedevelopers.com/jobs/ext/2812962-senior-software-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Software Engineer - **Company:** Kantar - **Location:** Reading, UK - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), User Authentication, Software Quality, Databases, Data Integration, PostgreSQL, MongoDB, Node.Js, TypeScript, Backend, Event Driven Architecture, Graphql, Restful APIs - **Published:** September 10, 2026 - **Apply:** https://www.collegerecruiter.com/job/2859571183-senior-software-engineer ## About the Role * 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 ## Description 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., * 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 ## Related Videos - [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape) - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [40 Minutes to Build a Serverless COVID-19 REST and GraphQL APIs](https://www.wearedevelopers.com/videos/208-40-minutes-to-build-a-serverless-covid-19-rest-and-graphql-apis) - [Stop using Node.js like in 2020! What changed and what you can do today with Node.js](https://www.wearedevelopers.com/videos/100011-stop-using-node-js-like-in-2020-what-changed-and-what-you-can-do-today-with-node-js) - [Protector Of The Realm](https://www.wearedevelopers.com/videos/591-protector-of-the-realm) - [Nest.js - TypeScript in the backend can also be clean](https://www.wearedevelopers.com/videos/1033-nest-js-typescript-in-the-backend-can-also-be-clean) ## Related Articles - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [The 7 Most Popular Backend Frameworks for Developers](https://www.wearedevelopers.com/magazine/403-the-7-most-popular-backend-frameworks-for-developers) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [The Best X (Twitter) Accounts for Developers](https://www.wearedevelopers.com/magazine/294-the-best-x-twitter-accounts-for-developers) - [Dev Digest 159: AI Pipelines, 10x Faster TypeScript, How to Interview](https://www.wearedevelopers.com/magazine/563-dev-digest-159-ai-pipelines-10x-faster-typescript-how-to-interview) - [Dev Digest 131 - AI'm not sure about OSS](https://www.wearedevelopers.com/magazine/472-dev-digest-131-ai-m-not-sure-about-oss)