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Backend Engineer : Attribute Enrichment (Remote) at Constructor. About The Team. As a Backend Engineer in the Attribute Enrichment team, you will play a critical role in designing, building, and maintaining scalable services that deliver enriched items, variations, and attributes via a public API. You’ll work across key services like Attribute Enrichment and Badges, managing a dedicated database to store enriched items, their metadata, and their attributes, and develop APIs that integrate with CIO Search and Browse to support enriched facets and searchable tokens.. You will collaborate closely with ML engineers to develop and optimize the Attribute Enrichment service, ensuring its scalability, reliability, and performance. As a member of the Attribute Enrichment team, your engineering expertise and collaborative efforts will directly enhance the quality and functionality of our solutions, driving customer satisfaction and engagement. This role is essential to delivering a robust service that meets the highest standards and enables data-driven features across our platform.. Challenges you will tackle. . 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. . Collaborate with technical and non-technical business partners to develop / update service functionalities. . Communicate with stakeholders within and outside the team. . 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 any of the major public cloud providers: AWS, Azure, GCP. . Hands-on experience with setting up and improving CI/CD pipelines. . Experience with NoSQL and relational databases, distributed systems, and caching solutions would be a plus. . Skilled in setting up and managing observability tools like Prometheus, Grafana, and integrating alert systems like PagerDuty 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. . Company Location: Spain.