> Markdown version of [/jobs/ext/4644155-senior-full-stack-engineer-cybersecurity-saas-contract](https://www.wearedevelopers.com/jobs/ext/4644155-senior-full-stack-engineer-cybersecurity-saas-contract). 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). --- # Senior Full-Stack Engineer - Cybersecurity SaaS (Contract) - **Company:** Fime - **Location:** Spain - **Contract:** Permanent contract - **Skills:** Amazon Web Services, Software as a Service, Cyber Security, PostgreSQL, Node.Js, TypeScript, ReactJS, Backend, Front End Software Development, Docker - **Published:** November 9, 2026 - **Apply:** https://www.jobleads.com/es/job/senior-full-stack-engineer-cybersecurity-saas-contract--spain--e6d87a35fb4a892cebe4a8a312c0cae48 ## About the Role The role requires strong experience across the stack, a solid understanding of security standards, and hands-on expertise with AWS, Docker ## Description Fime is seeking a Senior Full Stack Software Developer on a contractor basis to join our cybersecurity SaaS platform. You will work on the full stack: React/TypeScript frontend, TS client library, and Node.js/PostgreSQL backend, collaborating with cybersecurity, testing, and UX teams to deliver secure, scalable features for a technically demanding user base. The role requires strong experience across the stack, a solid understanding of security standards, and hands-on expertise with AWS, Docker