> Markdown version of [/jobs/ext/2285524-backend-developer](https://www.wearedevelopers.com/jobs/ext/2285524-backend-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Backend Developer - **Company:** BCNC GROUP - **Location:** León, Spain - **Contract:** Permanent contract - **Skills:** Customer Information Control System (CICS), COBOL (Programming Language), IBM DB2, Job Control Language (JCL), Software Engineering, Z/OS, Backend - **Published:** August 29, 2026 - **Apply:** https://www.jobleads.com/es/job/e96f8163ce2c3c56f7ce60c065384b354 ## About the Role * Experiencia mínima de 5 años como Backend Developer en entornos mainframe bancarios. * Experiencia consolidada en: COBOL, DB2, z/OS, JCL y CICS. * Conocimiento de core bancario (cuentas, medios de pago, posicionamiento) valorable. * Capacidad de análisis funcional, resolución de incidencias e interlocución con distintos equipos. ## Description En BCNC Group, estamos en búsqueda de un Senior Backend Developer con Cobol, para incorporarte a un proyecto estratégico dentro de una multinacional, líder del sector bancario, participando en: la evolución, mantenimiento y desarrollo de aplicaciones core sobre arquitectura mainframe, garantizando la estabilidad, escalabilidad y continuidad de servicios críticos de negocio., * Desarrollar y mantener aplicaciones backend en COBOL dentro de entornos productivos mainframe. * Realizar mantenimiento evolutivo y correctivo de aplicaciones de core bancario. * Diseñar e implementar nuevas funcionalidades sobre entornos z/OS, CICS, JCL y DB2. * Analizar incidencias críticas y gestionar desarrollos end to end con autonomía. * Colaborar con equipos funcionales, negocio y squads técnicos en entornos cross. ## Related Videos - [".Net is too slow" was not an option](https://www.wearedevelopers.com/videos/100176-net-is-too-slow-was-not-an-option) - [Data Fabric in Action - How to enhance a Stock Trading App with ML and Data Virtualization](https://www.wearedevelopers.com/videos/253-data-fabric-in-action-how-to-enhance-a-stock-trading-app-with-ml-and-data-virtualization) - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [Enterprise-Cloud-Native - Fast-Paced Development & Deployment in a Highly Secure Banking Environment](https://www.wearedevelopers.com/videos/671-enterprise-cloud-native-fast-paced-development-deployment-in-a-highly-secure-banking-environment) - [Nest.js - TypeScript in the backend can also be clean](https://www.wearedevelopers.com/videos/1033-nest-js-typescript-in-the-backend-can-also-be-clean) - [Building with IBM Bob](https://www.wearedevelopers.com/videos/100275-building-with-ibm-bob) ## Related Articles - [What’s the Difference Between Frontend and Backend Development?](https://www.wearedevelopers.com/magazine/240-what-s-the-difference-between-frontend-and-backend-development) - [20 Essential Tools For Backend Development](https://www.wearedevelopers.com/magazine/218-20-essential-tools-for-backend-development) - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer) - [What is a web developer?](https://www.wearedevelopers.com/magazine/18-what-is-a-web-developer) - [Backend Developer Salary in Austria [2023]](https://www.wearedevelopers.com/magazine/226-backend-developer-salary-in-austria-2023) - [Top-Paying Tech Jobs (with Salaries)](https://www.wearedevelopers.com/magazine/372-top-paying-tech-jobs-with-salaries)