This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Full Stack AI-first SaaS Engineer based in Spain.

As a Senior Full Stack AI-first SaaS Engineer, you will build and evolve a B2B platform designed to simplify security, compliance, and AI governance. You will work across frontend and backend development, taking ownership of features from initial concept through production delivery. The role places a strong emphasis on React and TypeScript while also requiring confidence in Node.js, APIs, integrations, and backend architecture. You will develop AI-powered product capabilities and use modern AI-assisted development tools as part of your everyday engineering workflow. Working within a lean, international team, you will contribute to system design, technical decisions, CI/CD, and product development. This is an opportunity to combine strong full-stack engineering with an AI-first mindset while building a product with meaningful business impact.

Accountabilities:





You will take end-to-end ownership of product features while contributing to architecture, engineering quality, and the continued development of an AI-first SaaS platform.
- Build and deliver full-stack features using React, TypeScript, and Node.js.
- Develop intuitive, performant, scalable frontend experiences for a complex B2B SaaS product.
- Implement backend services, APIs, business logic, and third-party integrations.
- Develop and integrate AI-powered product features into production systems.
- Participate in system design and architectural decisions.
- Use AI-assisted development tools such as Claude Code, Cursor, GitHub Copilot, or similar solutions to accelerate development.
- Review, debug, test, and refine AI-generated code while maintaining full ownership of implementation quality.
- Take responsibility for CI/CD and DevOps aspects related to the features you build.
- Work closely with Engineering and Product tea

📌 Senior Full Stack AI-first Saas Engineer (España)
🏢 Jobgether
📍 España