Staff Backend Engineer — AI-Driven Data & Retrieval

Wand AI; Spain; On-site; EUR 90,000 - 140,000; Full time

Job summary

Wand AI in Spain seeks a hands-on Staff Engineer to own the context management layer powering its AI agents. You will ensure access, retrieval, and reasoning over information from diverse enterprise sources in a fast-paced startup.

You will work with Python, Golang, Elasticsearch, MongoDB, PostgreSQL, Redis, and cloud platforms to build scalable search, data pipelines, and end-to-end data integration for enterprise SaaS, contributing to production-grade AI capabilities.

Qualifications

• Degree in Computer Science, Engineering, or a related field (required).
• 10+ years of engineering experience in high-paced settings.
• Proficiency in Python or Golang; willingness to adopt new languages as stack evolves.
• Experience with enterprise SaaS integrations or search technologies (Elasticsearch or vector databases).
• Proficiency with at least one cloud platform (GCP/AWS/Azure).
• Self-sufficiency across the stack and Docker/Kubernetes experience.
• Production experience with data pipelines, ETL/ELT workflows, and LLM APIs.

Responsibilities

• Design and build scalable search and retrieval systems using lexical and semantic methods.
• Develop and maintain connectors to enterprise data sources and APIs.
• Build data pipelines to ingest, transform, and index customer data for AI agents.
• Pull and process analytics data from customer data warehouses (Snowflake, BigQuery, Databricks).
• Own projects end-to-end from architecture through deployment and maintenance.
• Collaborate with product and AI teams to improve agent performance via retrieval quality.
• Optimize pipelines for latency, relevance, and cost at scale.
• Uphold a culture of high efficiency, creativity, and quality.

Skills

Python

Golang

Cloud platforms

Elasticsearch

Data pipelines

Kubernetes

Docker

ETL/ELT

LLM APIs

Education

Degree in Computer Science/Engineering

Tools

Elasticsearch

Snowflake

BigQuery

Databricks

PostgreSQL

Redis

RabbitMQ

Kafka

Job description

Wand AI in Spain seeks a hands-on Staff Engineer to own the context management layer powering its AI agents. You will ensure access, retrieval, and reasoning over information from diverse enterprise sources in a fast-paced startup.

You will work with Python, Golang, Elasticsearch, MongoDB, PostgreSQL, Redis, and cloud platforms to build scalable search, data pipelines, and end-to-end data integration for enterprise SaaS, contributing to production-grade AI capabilities.