Real-Time Personalisation Backend Engineer

Tesco Technology; Greater London; Hybrid; GBP 70,000 - 110,000; Full time

Benefits offered by this job

Annual bonus up to 20%

25 days holiday + personal day

Private medical insurance

Maternity and adoption leave

Mental wellbeing support & EAP

Job summary

Tesco Technology is seeking a backend engineer to join the Personalisation team, building real-time, low-latency services that power personalised experiences for Tesco customers across web, mobile, and in-store channels.

You will develop Java/Spring Boot microservices, work with Kafka, Flink/Beam pipelines, feature stores, NoSQL datastores, and contribute to CI/CD, testing, and monitoring in a large-scale distributed system.

Qualifications

• Strong Java backend experience.
• Experience building microservices and APIs.
• Understanding of event-driven systems.
• Familiarity with stream processing concepts.
• Knowledge of distributed systems.
• Strong communication and teamwork skills.
• Interest in data-driven personalization systems.

Responsibilities

• Building low-latency, high-throughput services for personalisation.
• Developing Java / Spring Boot microservices with REST/gRPC APIs.
• Working with Kafka and event-driven architectures.
• Building pipelines using Apache Flink and Apache Beam.
• Integrating ML models and feature stores.
• Working with NoSQL databases and Redis caching.
• Using Apache Camel for integration where required.
• Collaborating with product, data science, and analytics teams.
• Writing automated tests and improving reliability.
• Monitoring systems using New Relic, Splunk, and metrics platforms.
• Supporting CI/CD pipelines and deployments.
• Contributing to experimentation (A/B testing).

Skills

Java backend

Microservices

Event-driven systems

Stream processing

Distributed systems

Communication & teamwork

Data-driven personalization

Tools

Kafka

Apache Flink

Apache Beam

Cassandra

DynamoDB

Redis

Docker

Kubernetes

GCP / AWS

Job description

Tesco Technology is seeking a backend engineer to join the Personalisation team, building real-time, low-latency services that power personalised experiences for Tesco customers across web, mobile, and in-store channels.

You will develop Java/Spring Boot microservices, work with Kafka, Flink/Beam pipelines, feature stores, NoSQL datastores, and contribute to CI/CD, testing, and monitoring in a large-scale distributed system.