Senior Full Stack Engineer - Java

Lufthansa Group; Köln; Vor Ort; EUR 60.000 - 80.000; Vollzeit

Zusammenfassung

Lufthansa Group is seeking a Senior Full Stack Engineer to shape and scale high-impact digital products within the Ops Digital Heartbeat initiative. You will integrate mathematical optimization engines, design and implement features, and build scalable microservices using Java and Spring Boot.

The ideal candidate will have 5+ years of software engineering experience, strong frontend skills with React or Vue, and expertise in modern software practices. Join us to revolutionize the travel experience for our customers.

Qualifikationen

• 5+ years of experience in software engineering is required.
• Strong expertise in Java and Spring / Spring Boot.
• Experience building microservices and REST APIs at scale.
• Solid frontend experience with React or Vue.
• Strong knowledge of JavaScript, TypeScript, HTML, and CSS.

Aufgaben

• Integrate mathematical optimization engines and Generative AI capabilities into applications.
• Design and implement end-to-end features across backend and frontend.
• Build scalable microservices and APIs using Java.
• Develop high-quality frontend applications using Vue.js.
• Ensure high code quality through testing and reviews.

Kenntnisse

Java and Spring / Spring Boot

Microservices and REST APIs

Frontend development with React or Vue

JavaScript / TypeScript

HTML

CSS

Cloud platforms (Azure, AWS, or GCP)

Containerization (Docker)

Kubernetes

CI/CD and DevOps

Testing strategies

Communication and stakeholder management

Jobbeschreibung

As a Senior Full Stack Engineer, you will shape and scale high-impact digital products within the Ops Digital Heartbeat initiative. Own complex systems, define architecture, and deliver modern cloud solutions. Drive data pipelines, analytics, and automation to improve decisions and execution through modular, iterative delivery.

What you will do

• Integrating mathematical optimization engines and Generative AI capabilities into production‑grade enterprise applications (key part of this role)
• Design and implement end‑to‑end features across backend and frontend
• Build and evolve scalable microservices and APIs using Java (Spring Boot)
• Develop high-quality frontend applications using Vue.js
• Ensure high code quality through testing, code reviews, and engineering best practices
• Collaborate closely with Product, Design, and Engineering teams
• Optimize systems for performance, scalability, and reliability
• Support and mentor other engineers through technical guidance and feedback.

Requirements

• Core Skills: 5+ years of experience in software engineering; Strong expertise in Java and Spring / Spring Boot; Experience building microservices and REST APIs at scale; Solid frontend experience with React or Vue; Strong knowledge of JavaScript / TypeScript, HTML, CSS

• Platform & Engineering Practices: Experience with cloud platforms (Azure, AWS, or GCP); Strong understanding of containerization (Docker) and Kubernetes; Experience with CI/CD and DevOps collaboration; Strong knowledge of testing strategies (unit, integration, end‑to‑end); Understanding of performance, security, and scalability principles
• Collaboration: Experience working in cross-functional teams; Strong communication and stakeholder management skills.

What you will bring

• Expertise in system design and clean architecture principles
• Ability to drive and influence team direction
• Ownership mindset
• Pragmatic decision-making
• Ability to mentor and elevate team
• Proactive communication and a mindset of continuous improvement.

About Eurowings Digital GmbH

We want to unfold the world to our customers. Eurowings Digitals mission is to deliver the most convenient and affordable end2end travel experience by connecting the physical and digital world. While our customers enjoy their journey, we take charge of a carefree travel experience. Not only offering quality flights for affordable prices, but being a travel companion all along the way. From their first inspiration to their favorite travel memories. Therefore we launched a whole new company which puts their customer into their total focus. Together we are going to discover, develop and test new products along the whole customer journey, on- and offline. In agile and diverse teams we will revolutionize the way of travelling.