Overview

Join Plexus Tech. We are looking for a programmer with 3 years of experience in Java development and familiarity with data analysis.
Responsibilities

SQL query optimization
Requirements

General Requirements
Vocational training in Computer Science or higher
Minimum 3 years experience in a similar position
Ability to work in a team, with a willingness to learn.
Intermediate English (Highly desirable).
Programming Language

Java (Java SE and EE)
Framework Knowledge

Spring / Spring Boot
Hibernate / JPA
Maven / Gradle
Databases

Relational: PostgreSQL, Oracle
Schema design and normalization
SQL query optimization
Advanced SQL (joins, subqueries, CTEs, window functions)
Basic knowledge of statistics
Tools

DBeaver
Data Analysis & ETL

Extract, Transform, Load (ETL)



knowledge
BI Tools

Pentaho
Apache NiFi
Complementary Technologies

Git / GitHub / GitLab
RESTful APIs and web services
Testing: JUnit, Mockito
Technical documentation (Swagger, OpenAPI)
Agile methodologies (Scrum, Kanban)
Benefits

Hybrid model: work from any of our 24 work centers in Spain, from home, or a combination.
Collaborative environment within the company.
Work with leading professionals.
Access to ongoing training.
Professional development opportunities.
Versátil compensation with health insurance, meal vouchers, childcare, and transportation.

📌 Java Developer + Data Analysis (Madrid)
🏢 Plexus Tech
📍 Madrid