Senior Java Software Engineer (f/m/d)

Purpose of Position
Awin's Product Development department is responsible for all stages of the product lifecycle - from ideation to market release, ongoing operation and continuous improvement.
Working within one of our agile Engineering teams, this role reports to an Engineering Manager. As a Senior Software Engineer, you will be a technical leader within the team - driving architectural decisions, owning complex technical initiatives, and raising the engineering bar across the team and beyond.
As a Senior Software Engineer, writing SOLID, secure & well-tested code is a given. You bring deep commercial experience across your technical stack and a strong understanding of infrastructure, platform engineering and cloud-native patterns. You are comfortable navigating ambiguity, making pragmatic trade-offs, and communicating technical direction to both engineers and stakeholders.
You are a passionate and innovative technologist with a proactive, quality-first approach to development and keen to gain exposure to the latest development practices and toolsets within an interactive and fun development environment. We value fresh perspectives, continuous personal growth, diversity and a healthy work-life balance. For example: we have a 4‑day week at full salary.
The Core Team is a platform team in the Developer Platform domain. Its mission is to provide central services around our core entities and systems that make it easier for Product Teams to build functionality on top of. The team provides these "as a service" through clear APIs, documentation and support - focusing on creating a smooth developer experience for other teams. The team also focuses on topics like standardisation, re‑use and reducing duplicated effort across the department.
As a Senior Engineer in this team, you will play a key role in shaping the platform's infrastructure direction - including API gateways, load balancers, authentication flows, and contai