Sr. Fullstack Developer / AI platform

Expert Executive Recruiters (EER Global); Barcelona; Presencial; EUR 60.000 - 80.000; Jornada completa

Descripción de la vacante

A leading company in fraud prevention technology seeks a senior developer to build an integrated platform combining core cybersecurity tools. This role involves designing scalable systems and collaborating in a cross-functional team. The ideal candidate has extensive experience with AI, Big Data, and modern tech stacks, thriving in an autonomous environment.

Servicios

Professional growth opportunities

Competitive salary

Stock options

Formación

• 5+ years in Fullstack or backend-complex software development.
• Experience with large-scale systems or high-load environments.

Responsabilidades

• Design, implement, and maintain fullstack features end-to-end.
• Build and scale data-driven services for high loads.

Conocimientos

TypeScript

Node.js

React.js

AI

Big Data

NLP

Machine Learning

Herramientas

SQL

Snowflake

Micro-Frontend

Descripción del empleo

We are helping our client, a global leader in fraud prevention technology, known for developing one of the most recognized and advanced solutions on the market. Their product addresses complex challenges at scale, combining AI-driven insights, real-time data processing, and deep system integration. The engineering team works with a modern, robust tech stack, solving high-impact problems and delivering secure, scalable solutions to some of the world’s leading financial institutions. It’s a highly collaborative, innovation-driven environment where technology is at the core of the business.

In this role, you will help build a new integrated platform that combines the company’s core cybersecurity tools. You will work in a cross-functional team to design and develop scalable systems, contributing both to backend architecture and fullstack features. This role is ideal for a senior developer who thrives in autonomous environments, is proactive, and brings experience from AI, Big Data, NLP, or machine learning-related projects or companies.

Responsibilities

1. Design, implement, and maintain fullstack features end-to-end
2. Build and scale data-driven services capable of handling high loads and complex integrations
3. Contribute to integrating multiple products into a centralized platform
4. Develop and enhance frontend functionality using Micro-Frontend architecture
5. Collaborate on DevOps practices and CI / CD pipeline improvements
6. Work closely with peers in data engineering, product, and infrastructure

Requirements

1. 5+ years of experience in Fullstack or backend-complex software development roles, with exposure to / knowledge of front-end
2. Experience with large-scale systems or high-load environments
3. Strong backend skills in TypeScript, Node.js, and NestJS
4. Frontend proficiency with React.js, TypeScript, and Micro-Frontend architecture
5. Solid experience working with SQL, Snowflake, or other modern data warehouses
6. Familiarity with CI / CD and DevOps methodologies
7. Proven background in AI, Big Data, NLP, or machine learning–driven projects or companies

What the Company is Offering

The company offers a great opportunity for professional growth, a competitive salary, and the chance to work alongside top professionals. The company provides a comfortable office space in Barcelona. Stock options are also part of the compensation package, reflecting their commitment to shared success.