Senior Software Engineer

Kantar

Senior Software Engineer building distributed backend services for AI-driven applications. Focus on scalable systems and event-driven architectures in a flexible hybrid working environment.

Posted 7/8/2026full-timeReading • 🇬🇧 United KingdomSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in designing and building scalable, distributed backend services using Node.js, TypeScript, and Python, with a strong focus on cloud-based systems and event-driven architectures. Capable of contributing to technical direction and mentoring while optimizing AI-driven applications.

Highest-signal resume keywords

Backend Engineering ExperienceCloud-Based Systems (Azure, AWS, GCP)TypeScript/Node.js ProficiencyDistributed/Event-Driven Architectures (Kafka)API and Microservices Development

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Node.jsTypeScriptPythonAPI DevelopmentMicroservicesEvent-Driven SystemsDistributed ArchitecturesCloud-Based SystemsContainersAI Agent Orchestration

Soft Skills

MentoringCuriosity

Tools & Technologies

KafkaAzureAWSGCPRAGVector DatabasesLangChain

Industry Keywords

AI-Driven ApplicationsScalable SystemsHigh-Throughput WorkloadsLow-Latency WorkloadsCloud-Native Delivery

Tech Stack

Tools & technologies

AWSAzureCloudGoogle Cloud PlatformJavaScriptKafkaMicroservicesNode.jsPythonTypeScript

About the role

Key responsibilities & impact

Designing and building technology that can grow with our ambition
Creating scalable, distributed backend services for AI‑driven applications
Building event‑driven systems that process large volumes of behavioural data in real time
Developing services in Node.js/TypeScript and/or Python
Designing APIs that support high‑throughput, low‑latency workloads
Helping orchestrate and optimise AI agent‑based systems running at scale
Contributing to technical direction, mentoring others, and helping to continuously improve how we build and operate our platforms.

Requirements

What you’ll need

Strong backend engineering experience with cloud‑based systems (Azure, AWS or GCP)
Experience designing distributed or event‑driven architectures (Kafka or similar)
Proficiency in TypeScript/Node.js and/or Python
Experience building scalable APIs and microservices
Working knowledge of containers and cloud‑native delivery approaches
Curiosity about AI‑enabled systems and how they scale responsibly
Experience with LLMs, AI agent orchestration, or tools such as RAG, vector databases or LangChain is a bonus, but not essential.

Benefits

Comp & perks

Flexible hybrid working
25 days leave, 2 days paid for volunteering and life event leave
Competitive salary and bonus (bonus dependent on role)
Company pension
Enhanced parental leave
Healthcare options
Wide range of flexible benefits