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# Senior Backend Engineer: Attribute Enrichment

- **Company:** Constructor
- **Location:** UK (Remote available)
- **Experience:** Expert
- **Salary:** £80,000.0 - £120,000.0
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Amazon Web Services, Software Quality, Databases, Continuous Integration, Relational Databases, Distributed Systems, Github, Python (Programming Language), Networking Basics, NoSQL, Prometheus, Grafana, Caching, Backend, Pytest, Integration Tests, Information Technology, Cloudwatch, Pagerduty, Jenkins, Programming Languages
- **Published:** August 11, 2026
- **Apply:** https://www.adzuna.co.uk/jobs/details/5834878188

## About the Role

* 5+ years of experience
 * Strong computer science background & familiarity with networking principles
 * Proficiency in Python and backend development patterns
 * Experience in designing, developing & maintaining highload real-time services and public APIs
 * Experience with NoSQL and relational databases, distributed systems, and caching solutions would be a plus
 * Experience with any compiled programming language (e.g. Go, Rust) would be a plus
 * Experience writing unit and integration tests for backend services using frameworks such as Pytest, unittest, or equivalent
 * Experience collaborating in cross-functional teams
 * Excellent English communication skills

## Description

As a Backend Engineer in the Attribute Enrichment team, you will improve the e-commerce experience for hundreds of millions of users across the world by designing, building, and maintaining scalable services that deliver enriched items, metadata, and attributes to end users. You'll work across key services like Attribute Enrichment and Badges, managing a dedicated database and developing APIs that integrate with Search and Browse.

You will collaborate closely with ML engineers to develop and optimize the Attribute Enrichment service, ensuring its scalability, reliability, and performance. You will build the CI/CD and observability systems from scratch, as well as maintain and improve existing mature systems.

 * Build a new service to deliver ML-generated enriched attributes to our customers
 * Design a high-throughput, low-latency Badges service for heavy traffic
 * Develop Constructor's Attribute Enrichment product and Badges product features
 * Deploy high-available services in the cloud and implement CI/CD pipelines following best industry standards (AWS, Jenkins, GitHub Actions)
 * Set up service observability, monitoring metrics, and alerting (Prometheus, Grafana, PagerDuty, AWS CloudWatch)
 * Work with a dedicated database to manage enriched items, their metadata, and derived attributes for our customer dashboard application, ensuring data consistency, performance, and availability for downstream services and APIs
 * Write and maintain unit, integration, and end-to-end tests for backend services to ensure code quality and service reliability


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