Java Backend Developer (Digital Hangar)

At Digital Hangar, we build large-scale digital products that serve customers and employees across Lufthansa Group airlines worldwide.

By combining cloud-native technologies, DevOps practices, and AI-assisted development, our engineering teams deliver innovative solutions at scale. We actively explore emerging technologies such as AI agents, Agentic Engineering, and intelligent automation, integrating them into our products and development processes where they add real business value.

Who are you?

• 4+ years of professional Java backend development experience.

• Strong software engineering fundamentals and understanding of backend architecture.

• Practical experience designing backend solutions and making independent technical decisions.

• Solid understanding of microservices, distributed systems, REST APIs and synchronous/asynchronous communication.

• Experience with event-driven architecture (e.g. Kafka), containers, Kubernetes and CI/CD.

• Knowledge of software design principles, clean code and engineering best practices.

• Hands-on experience with AI-assisted development tools (e.g. GitHub Copilot, Cursor, Claude Code), including critical evaluation of AI-generated code.

• Ability to design and execute structured AI-assisted development workflows, including task decomposition, context management, clear acceptance criteria, iterative validation, automated testing, and well-defined quality gates.

• Strong analytical thinking, problem-solving skills, ownership and proactive communication.

• English B2/C1, enabling effective technical discussions in an international environment.

• Availability to work in a hybrid model – 2 days per week in our Gdańsk office

What do we welcome?

• Azure and cloud-native services.

• Observability / OpenTelemetry.

• AI-powered applications, LLMs, RAG, MCP or AI agents.

• Experience with Agile and cross-functional product teams

Why do we need you?

In this role, you will be responsible for:

• Design, develop and maintain scalable Java-based backend services, microservices and REST APIs.

• Build reliable synchronous and asynchronous integrations in distributed systems.

• Take ownership of technical solutions, from design and implementation to deployment and monitoring.

• Analyze complex problems, evaluate technical trade-offs and propose improvements to existing solutions.

• Apply AI-assisted development tools and explore new approaches to software engineering.

• Collaborate proactively with engineers and other stakeholders in international, cross-functional teams

What do we offer?

• Work on a cutting-edge integration platform in a cloud-native environment.

• An international working environment with a culture that fosters development.

• Individual career path and opportunities for professional growth.

• Employment contract, salary in the range of:
  - 8 000 - 16 000 zł gross for regular level
  - 10 000 - 21 000 zł gross for senior level​

• Lufthansa Group membership benefits.

• Flexible working time and place adjusted to employee’s needs. Possibility of starting your workday between 07:00 and 11:00.

• Support for your passion for sports within the local activity group and co-financing Multisport cards.

• Private medical care for employees and their family members.

• Life insurance.

• Parking space for employees.

• Extra social benefits.

• Holiday funds.

• Sharing the costs of holidays for kids.

• Sharing the commuting costs.

• Modern office in Oliwa – great location and comfortable workspace.