Job Summary: We are seeking candidates with experience in ION Trading and technical development for the banking sector, focused on backend systems, optimization, and APIs. Key Points: 1. Technical development for the banking sector at ION Trading 2. Backend process development and performance optimization 3. Experience with Java, Spring Framework, and DevOps tools Location**Madrid** Salary**40,000 € \- 45,001 €****Gross/year** Category**Information Technology and Telecommunications** Subcategory**Programming** Sector**Information Technology and Services** Working Hours**Full-time** Work Modality**Hybrid (On-site and Remote)** Professional Level**Employee** Department**Information Technology** ### **Description** Grupo NS is recruiting candidates with ION Trading experience for a project within the banking sector, operating under a hybrid model (on-site presence required three days per week in the Las Tablas area (Madrid)). **Requirements:** * Minimum two years’ prior experience in technical development using ION Trading. * Over four years’ experience with programming languages and frameworks: Java, Spring Framework (Spring Boot, Spring Batch); databases: Oracle / SQL; DevOps and continuous integration tools: Git, Bitbucket, Jenkins. * Backend process development and performance optimization in ETL and producer/consumer models. * APIs: REST. Greater weight is placed on experience in backend process development and performance optimization in ETL and producer/consumer models than on developing APIs that solely manage CRUD models for management applications. * English (minimum B2 level). ### **Minimum Requirements** * Minimum two years’ prior experience in technical development using ION Trading. * Over four years’ experience with programming languages and frameworks: Java, Spring Framework (Spring Boot, Spring Batch); databases: Oracle / SQL; DevOps and continuous integration tools: Git, Bitbucket, Jenkins. * Backend process development and performance optimization in ETL and producer/consumer models. * APIs: REST. Greater weight is placed on experience in backend process development and performance optimization in ETL and producer/consumer models than on developing APIs that solely manage CRUD models for management applications. * English (minimum B2 level). ### **Competencies** * java * SPRINGBOOT