> Markdown version of [/jobs/ext/1683176-staff-software-engineer](https://www.wearedevelopers.com/jobs/ext/1683176-staff-software-engineer). 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). --- # Staff Software Engineer - **Company:** Factorial Hr - **Location:** Barcelona, Spain - **Salary:** €110,000.0 - €150,000.0 - **Contract:** Permanent contract - **Skills:** Artificial Intelligence, ReactJS - **Published:** July 31, 2026 - **Apply:** https://www.jobleads.com/es/job/ee13e1432d1d614720b145b503cd4facc ## About the Role You'll design systems, set technical direction for meaningful roadmap chunks, own end-to-end architecture, and push for scalable AI across Factorial's platform. English is essential; Spanish is a plus. ## Description Factorial HR is seeking a Staff Software Engineer to help build AI-native features into our product. You'll lead technical initiatives, work closely with Product and Design, and ship real features to customers in production using Rails and React. ## Related Videos - [Watch Tests Go Brrrr! : Getting Started with Cypress in ReactJS](https://www.wearedevelopers.com/videos/282-watch-tests-go-brrrr-getting-started-with-cypress-in-reactjs) - [Edit Your Future: Queerverse Radical AI](https://www.wearedevelopers.com/videos/909-edit-your-future-queerverse-radical-ai) - [Your next 10x engineer isn't in your city. Refactor accordingly.](https://www.wearedevelopers.com/videos/100103-your-next-10x-engineer-isn-t-in-your-city-refactor-accordingly) - [Agentic employees in world's most downloaded FinTech app](https://www.wearedevelopers.com/videos/100123-agentic-employees-in-world-s-most-downloaded-fintech-app) - [AI is dead, long live AK](https://www.wearedevelopers.com/videos/1093-ai-is-dead-long-live-ak) - [Angstfreude - AI and Corporate Culture - The Thrill and the Threat](https://www.wearedevelopers.com/videos/100354-angstfreude-ai-and-corporate-culture-the-thrill-and-the-threat) ## Related Articles - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Navigating the AI Shift](https://www.wearedevelopers.com/magazine/629-navigating-the-ai-shift) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Spanish Business Culture and Etiquette](https://www.wearedevelopers.com/magazine/353-spanish-business-culture-and-etiquette) - [Where To Find Software Engineering Jobs](https://www.wearedevelopers.com/magazine/396-where-to-find-software-engineering-jobs)