Senior AI Full-Stack Engineer (Remote Europe)

www.cardandpaymentjobs.com; Madrid; Híbrido; EUR 70.000 - 85.000; Jornada completa

Descripción de la vacante

Card & Payment Jobs is seeking a hands-on AI Full Stack Engineer to help build a new SaaS ledger platform for an international fintech business. You will work end-to-end on design, development, testing, deployment and production support, applying AI coding tools in daily workflow.

You’ll use AI coding tools as part of your daily workflow, while taking full responsibility for the quality, security and behaviour of the software you deliver.

Formación

• Senior-level hands-on software engineering with Node.js, TypeScript and PostgreSQL.
• Experience delivering features from initial requirements through to production support.
• Experience with SaaS or multi-tenant systems, AWS, APIs, security and CI/CD.
• Frontend experience with React and TypeScript; ability to work independently in a codebase.

Responsabilidades

• Build backend services, APIs and integrations using Node.js and TypeScript.
• Design PostgreSQL data structures and optimise queries and data flows.
• Develop frontend functionality using React and TypeScript.
• Build secure, scalable features for a multi-tenant SaaS platform.
• Work with AWS, CI/CD pipelines and cloud-native deployment practices.
• Use tools such as Cursor, Claude Code or GitHub Copilot to support development, testing, debugging and refactoring.
• Review and validate AI-generated code before it reaches production.
• Solve technical and production issues, contribute to architecture decisions and review code.

Conocimientos

Node.js experience

TypeScript

PostgreSQL

React

AWS

CI/CD

AI coding tools knowledge

Herramientas

Cursor

Claude Code

GitHub Copilot

Descripción del empleo

Card & Payment Jobs is seeking a hands-on AI Full Stack Engineer to help build a new SaaS ledger platform for an international fintech business. You will work end-to-end on design, development, testing, deployment and production support, applying AI coding tools in daily workflow.

You’ll use AI coding tools as part of your daily workflow, while taking full responsibility for the quality, security and behaviour of the software you deliver.