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# Senior Data Backend Engineer

- **Company:** N-iX
- **Location:** La Unión, Spain (Remote available)
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Amazon Web Services, Data Analysis, BigQuery, Distributed Systems, PostgreSQL, Online Analytical Processing, Software Architecture, Software Tools, Systems Integration, GitHub Copilot, Backend, Kotlin, Data Management, Api Design
- **Published:** August 6, 2026
- **Apply:** https://es.indeed.com/viewjob?jk=aa8914fe1e768e4b

## About the Role

Strong commercial experience with Kotlin.
Hands-on experience with BigQuery in production environments.
Experience working with OLAP serving layers and analytical query systems.
Solid background in backend architecture and API design.
Experience building production-grade distributed systems.
Strong understanding of modern software engineering best practices.
Professional level of English.
Currently based in the European Union.

Nice to have:
Java experience.
PostgreSQL.
AWS and/or GCP.
Experience with REST and/or gRPC APIs.
Familiarity with AI-assisted development tools such as GitHub Copilot or Claude Code.

## Description

Design and develop scalable backend services using Kotlin.
Build and own clean API layers serving both internal and customer-facing products.
Work at the intersection of backend engineering and data platforms, integrating analytical data into product experiences.
Develop solutions leveraging BigQuery and OLAP serving layers.
Collaborate closely with cross-functional engineering teams in an agile environment.
Apply AI-assisted development practices using modern engineering tools.
Contribute to high-quality, maintainable, and scalable software architecture.


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