> Markdown version of [/jobs/ext/3488796-as400-rpg-developer](https://www.wearedevelopers.com/jobs/ext/3488796-as400-rpg-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). --- # AS400 RPG Developer - **Company:** knowmad Mood - **Location:** Madrid, Spain - **Contract:** Permanent contract - **Skills:** IBM System I, COBOL (Programming Language), System Availability, Yield Optimization - **Published:** September 22, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=947869897e1b61ac ## About the Role * Experiencia en el desarrollo, mantenimiento y soporte de aplicaciones empresariales en entornos AS400. * Conocimientos y experiencia en programación RPG. * Conocimientos y experiencia en COBOL. * Experiencia trabajando con sistemas IBM AS400 / IBM i. ## Description Buscamos incorporar a una persona con experiencia en entornos AS400 para participar en el desarrollo, mantenimiento y soporte de aplicaciones empresariales críticas. Tendrás un papel clave en la continuidad y evolución de sistemas que dan soporte a procesos de negocio esenciales., * Desarrollar y mantener aplicaciones sobre plataforma AS400. * Realizar tareas de soporte y resolución de incidencias en aplicaciones críticas para el negocio. * Analizar, diseñar e implementar mejoras funcionales y técnicas. * Participar en la corrección de errores y optimización del rendimiento de las aplicaciones. * Colaborar con los distintos equipos implicados para garantizar la estabilidad y disponibilidad de los sistemas. ## Related Videos - [Building with IBM Bob](https://www.wearedevelopers.com/videos/100275-building-with-ibm-bob) - [Autonomous microservices with event-driven architecture](https://www.wearedevelopers.com/videos/1052-autonomous-microservices-with-event-driven-architecture) - [Quantum Tech: Preparing for the Next Leap](https://www.wearedevelopers.com/videos/1693-quantum-tech-preparing-for-the-next-leap) - [Can This Elephant Dance? IBM Bob and the Future of AI-First Software Development](https://www.wearedevelopers.com/videos/100256-can-this-elephant-dance-ibm-bob-and-the-future-of-ai-first-software-development) - [".Net is too slow" was not an option](https://www.wearedevelopers.com/videos/100176-net-is-too-slow-was-not-an-option) - [Azure-Well Architected Framework - designing mission critical workloads in practice](https://www.wearedevelopers.com/videos/1529-azure-well-architected-framework-designing-mission-critical-workloads-in-practice) ## Related Articles - [Spanish Business Culture and Etiquette](https://www.wearedevelopers.com/magazine/353-spanish-business-culture-and-etiquette) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Dev Digest 158: Super Mario AI 🔑 API keys in LLMs 🤙🏾 Vibe Coding](https://www.wearedevelopers.com/magazine/559-dev-digest-158-super-mario-ai-api-keys-in-llms-vibe-coding) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Everything a Developer Needs to Know About MCP with Neo4j](https://www.wearedevelopers.com/magazine/604-everything-a-developer-needs-to-know-about-mcp-with-neo4j) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline)