FJX Group

AI-Enhanced Backend Software Engineer - Customer Integration

In short

Backend Software Engineer role in Málaga building an event-driven, AI-enhanced data ingestion and integration platform connecting operational systems to customer engagement tools for Fielmann's customer intelligence domain. Requires 3+ years of Node.js/TypeScript backend experience, deep AWS expertise (API Gateway, AppRunner, SQS, Glue, Lambda, Step Functions), AWS CDK, cloud-native architecture design, and enthusiasm for AI development tools like Cursor and Copilot. Hybrid role (40% on-site) with a permanent contract and flexible hours in a senior, international engineering team.

Responsibilities
We are building AI-enhanced digital products with a clear purpose: to help people all over the world see and hear better. At our Digital Excellence Hub in Málaga, you'll join a senior, international engineering team focused on shipping high-quality software faster and smarter using the latest AI development tools.
Within our Customer Intelligence domain, we are building the backbone that powers customer-centric experiences across the entire Fielmann ecosystem. One of our key initiatives is a scalable data ingestion platform that connects core operational systems with our customer engagement toolchain.
Your mission will be to design and build a robust, event-driven backend service layer that:
•Ingests and transforms high-volume operational data
•Ensures reliable, secure, and compliant data flows
•Enables real-time and batch integrations
•Serves as the foundation for analytics, automation, and AI-driven personalization
You will be building infrastructure-grade services that become mission-critical for how we understand and serve our customers. This is your opportunity to shape the future of AI enhanced software engineering in a real-world, purpose-driven environment.
Requirements
👀 What We're Looking For
•3+ years of backend experience with Node.js and TypeScript
•Deep hands-on expertise with AWS (e.g. API Gateway, AppRunner, SQS, Glue, Lambda, Step, etc.)
•Strong knowledge of AWS CDK
•Comfortable designing secure, observable cloud-native architectures
•Experience with monitoring/observability tools (e.g. DataDog)
•Experienced with and genuinely excited by AI development tools (e.g. Cursor, Copilot, Tabnine)
•Always exploring new tools and technologies — with a strong drive to turn ideas into shipped products
•Agile mindset, fluent in English, and a strong sense of ownership
Conditions
💎 Why You'll Love Working With Us
•Build meaningful products for Fielmann, Europe's leader in eye & hearing care
•Impact the lives of millions of customers across digital channels
•Use state-of-the-art AI tools like Cursor, Co-Pilot and what's next in daily work
•Be part of a senior team at our Málaga Tech Hub — with remote flexibility
•Work in a value-driven company that empowers people through tech
•Grow in a team culture designed for experimentation & future-proof skill building
📍 What You Get
•📍 Based in Málaga (Hybrid - 40% on site) in a modern, high-quality workspace
•🕐 Permanent contract with flexible working hours (core time 10-16)
•💬 English-speaking team, flat structure, minimal meetings
•👓 Attractive employee benefits (e.g. free glasses or sunglasses)
•👨‍🏫 Mentorship & career growth in AI-enhanced Software Engineering

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