As a Senior Full Stack Engineer, you will build and scale critical digital products across the full stack, mainly within the Ops Digital Heartbeat initiative. This program focuses on creating scalable, data-driven solutions for operational processes. You will own complex systems, shape architecture, and work closely with engineering and domain teams to deliver modern cloud-native solutions. This includes integrating data pipelines, enabling analytics, and driving automation to improve decision-making and execution. The work is delivered iteratively, with a strong focus on modular design and continuous optimization of operational systems.
Senior Full Stack Engineer
Köln
Full-time
Permanent employee
Job overview
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.
Job Title
Senior Full Stack Engineer
Job Subtitle
Java
What you will need
- 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: Proven experience working in cross-functional teams; Strong communication and stakeholder management skills.
- Exposure to or experience with Operations Research (OR) concepts and ecosystems: MILP/LP modeling, constraint programming, scheduling, routing, forecasting
- Experience with agent frameworks and protocols (e.g., LangGraph, Pydantic AI, Model Context Protocol / MCP).
What you will bring
- Strong expertise in system design and clean architecture principles
- Ability to drive technical decisions and influence team direction
- Ownership mindset with end-to-end accountability
- Pragmatic decision-making balancing speed, quality, and business needs
- Ability to mentor and elevate team engineering standards
- Proactive communication and a mindset of continuous improvement.
Inclusivity
all genders
Workplace type
Hybrid
About us
We are dreamers, doers, and enthusiasts!
Our mission is to enable our customers on leisure and/or business travel to enjoy a seamless travel booking experience from the tip of their fingers. Therefore, we are continuously working passionately on providing diverse and attractive offers on our online booking platforms Eurowings & Eurowings Holidays and mobile Apps to empower our customers with relevant information and smart digital services throughout their travel experience.
Our mission is to enable our customers on leisure and/or business travel to enjoy a seamless travel booking experience from the tip of their fingers. Therefore, we are continuously working passionately on providing diverse and attractive offers on our online booking platforms Eurowings & Eurowings Holidays and mobile Apps to empower our customers with relevant information and smart digital services throughout their travel experience.