> Markdown version of [/jobs/ext/1936213-cobol-mainframe-developer-optimize-modernize-legacy-systems](https://www.wearedevelopers.com/jobs/ext/1936213-cobol-mainframe-developer-optimize-modernize-legacy-systems). 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).

---

# Cobol Mainframe Developer: Optimize & Modernize Legacy Systems

- **Company:** Fistrek
- **Location:** Arrasate / Mondragón, Spain
- **Contract:** Permanent contract
- **Skills:** COBOL (Programming Language), Mainframes, Software Engineering, Information Technology
- **Published:** August 5, 2026
- **Apply:** https://www.buscojobs.com.es/cobol-mainframe-developer-optimize-modernize-legacy-systems-en-alava-ID-365623586

## About the Role

El candidato debe ser analítico y orientado al detalle, con habilidades para trabajar en equipo.

## Description

Fistrek busca un desarrollador COBOL en Mondragón, España.La persona seleccionada se encargará de desarrollar, mantener y optimizar aplicaciones en entornos mainframe, así como de analizar requerimientos y realizar pruebas para garantizar la calidad del código.Se requiere formación técnica en informática o ingeniería de software, así como experiencia previa en programación COBOL.El candidato debe ser analítico y orientado al detalle, con habilidades para trabajar en equipo.#J-*****-Ljbffr


## Related Videos

- [".Net is too slow" was not an option](https://www.wearedevelopers.com/videos/100176-net-is-too-slow-was-not-an-option)
- [Cloud as the new mainframe: why the cloud hype does not reflect the dev reality](https://www.wearedevelopers.com/videos/797-cloud-as-the-new-mainframe-why-the-cloud-hype-does-not-reflect-the-dev-reality)
- [The Avengers Initiative (Practical Ethics for Software Engineers)](https://www.wearedevelopers.com/videos/2070-the-avengers-initiative-practical-ethics-for-software-engineers)
- [Enabling intelligent logistics automation: home-grown Industrial IoT platform at Austrian Post](https://www.wearedevelopers.com/videos/2018-enabling-intelligent-logistics-automation-home-grown-industrial-iot-platform-at-austrian-post)
- [Migrating from COBOL with AI: A Moonshot Demo](https://www.wearedevelopers.com/videos/1531-migrating-from-cobol-with-ai-a-moonshot-demo)
- [Building with IBM Bob](https://www.wearedevelopers.com/videos/100275-building-with-ibm-bob)

## Related Articles

- [Spanish Business Culture and Etiquette](https://www.wearedevelopers.com/magazine/353-spanish-business-culture-and-etiquette)
- [10 Highest Paying Programming Languages 2025](https://www.wearedevelopers.com/magazine/150-10-highest-paying-programming-languages-2025)
- [Can coding be the next blue collar career?](https://www.wearedevelopers.com/magazine/44-can-coding-be-the-next-blue-collar-career)
- [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated)
- [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)
- [Résumé-Driven Development: How IT trends affect the job market for software developers](https://www.wearedevelopers.com/magazine/59-resume-driven-development-how-it-trends-affect-the-job-market-for-software-developers)