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# Backend Developer

- **Company:** Avnet
- **Location:** Barcelona, Spain
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Microsoft Azure, Big Data, Cloud Computing, Data Transformation, Data Systems, Distributed Systems, Elasticsearch, Github, Python (Programming Language), Machine Learning, MongoDB, Neo4j, NoSQL, Performance Tuning, Tensorflow, Working Model 2D, Pytorch, Large Language Models, Apache Spark, Backend, Fastapi, Front End Software Development, Restful APIs, Software Version Control, Data Pipelines, Microservices
- **Published:** May 13, 2026
- **Apply:** https://es.indeed.com/viewjob?jk=1bf8f1b0be40bed9

## About the Role

Do you have a Master's degree?, * Strong proficiency in Python

 * Hands-on experience with FastAPI
 * Experience with NoSQL databases, especially MongoDB
 * Strong experience working with big data systems and large-scale datasets
 * Proven ability to optimize performance of data transformations, particularly using Apache Spark
 * Experience working with distributed computing environments (e.g. private cloud clusters)
 * Familiarity with version control systems (GitHub or similar)
 * Experience building RESTful APIs
 * Solid understanding of backend architectures and microservices
 * High proficiency in English (written and spoken).

Nice to Have:

 * Experience with Neo4j
 * Knowledge of cloud platforms, especially Microsoft Azure
 * Experience with Elasticsearch
 * Background in AI / Machine Learning (e.g. PyTorch, TensorFlow)
 * Experience integrating Large Language Models (LLMs)
 * Familiarity with data pipelines and analytics systems.

What's in it for you:

 * Hybrid working model.
 * A supportive multicultural team environment where everyone is working toward the same goal.
 * A strong open-door policy.
 * An environment where you will have the tools and opportunities to further your career.

## Description

* Design, develop, and maintain backend services using Python and FastAPI
 * Build scalable and high-performance APIs for internal applications
 * Work with NoSQL databases such as MongoDB
 * Design and optimize big data processing pipelines
 * Perform and optimize large-scale data transformations using Apache Spark on private cloud clusters
 * Collaborate with cross-functional teams (data, frontend, business)
 * Manage code versioning using GitHub
 * Contribute to modern software architecture design
 * Optimize system performance and reliability.


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