Senior Search Engineer: Semantic Retrieval & Scala Backend

Commercetools; España; Híbrido; EUR 90.000 - 140.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Health benefits

Hybrid work model

Global on-call rotation

Descripción de la vacante

commercetools is seeking a Senior Search Engineer to join the Discovery Team to build the retrieval layer behind product discovery for leading ecommerce brands. You will enhance search across catalogs, enabling fast, cost-effective results in a scalable JVM backend.

You will work on lexical, semantic, and hybrid retrieval with ElasticSearch/MongoDB, contribute to relevance, and operate infrastructure on Kubernetes with Terraform in a multi-tenant setup. Hybrid European office presence required.

Formación

• At least 5 years of experience as a Software Engineer on JVM-based systems.
• Solid understanding of parallel and asynchronous programming, and non-blocking I/O.
• Experience developing REST APIs and scalable architectures (sharding, replication, load balancing, failover).
• Interest in Scala and functional programming patterns; willingness to learn other JVM languages.
• Fluent English for work in international teams.
• Experience operating multi-tenant SaaS where one tenant’s load must not affect another’s.
• Knowledge of scalable event-driven architectures, including queues and notification topics.
• Genuine curiosity for using AI tools to work smarter and more effectively.

Responsabilidades

• Design and implement search functionalities in a PaaS ecommerce Scala backend.
• Develop search capabilities that combine lexical, semantic, and hybrid retrieval.
• Develop search-related libraries based on ElasticSearch and MongoDB.
• Contribute to search relevance and quality, and to how we measure it.
• Run and maintain a scalable search infrastructure as code on top of Kubernetes using Terraform and multi-tenant architecture.
• Test software components regarding usability, functionality, and performance, and work with Product Management and DevOps.
• Learn Scala and functional programming as your new main development tools.
• Take part in on-call rotation with a worldwide distributed team for production systems.

Conocimientos

Scala

JVM

REST APIs

Kubernetes

ElasticSearch

OpenSearch

Multi-tenant SaaS

AI tools

Distributed systems

Herramientas

ElasticSearch

MongoDB

Terraform

Kubernetes

Helm

Rust

Descripción del empleo

commercetools is seeking a Senior Search Engineer to join the Discovery Team to build the retrieval layer behind product discovery for leading ecommerce brands. You will enhance search across catalogs, enabling fast, cost-effective results in a scalable JVM backend.

You will work on lexical, semantic, and hybrid retrieval with ElasticSearch/MongoDB, contribute to relevance, and operate infrastructure on Kubernetes with Terraform in a multi-tenant setup. Hybrid European office presence required.