Java Backend Developer

Who are we?

Lufthansa Systems Poland is acclaimed and widely recognized provider of superior services and IT solutions for the aeronautical, logistic and financial industries. As a part of the Lufthansa Group we implement technological solutions and dedicated services.

Who are you?

Your profile:

• 3+ years of commercial experience as a Java Backend Developer.

• Strong experience with Java 17+ (Java 21 preferred), Spring Framework, and Spring Boot 3.x.

• Experience designing and developing scalable backend applications and RESTful APIs.

• Experience writing automated tests at different levels (unit, integration, functional) using JUnit and TDD/BDD practices.

• Solid understanding of object-oriented programming, design patterns, and clean code principles.

• Experience working with Docker and Kubernetes.

• Experience with cloud platforms such as AWS, Azure, or GCP.

• Knowledge of CI/CD tools such as Jenkins, GitHub Actions, or GitLab CI.

• Good knowledge of Linux environments.

• Understanding of application observability concepts, including logging, metrics, and distributed tracing.

• Awareness of secure coding practices and common application vulnerabilities.

• Good written and spoken English (B2+).

• Ownership mindset, proactive attitude, and strong communication skills

• Knowledge of software design patterns and clean code principles.

What do we welcome?

• Experience with Infrastructure as Code solutions (Terraform, Helm).

• Familiarity with GitOps practices and tools (ArgoCD, Flux).

• Experience with messaging platforms such as ActiveMQ/JMS, Kafka, or RabbitMQ.

• Familiarity with MongoDB, Hazelcast, or Ansible.

• Experience with monitoring and observability tools such as Prometheus, Grafana, and OpenTelemetry.

• Familiarity with structured logging and centralized log management platforms.

• Experience using AI-assisted development tools (e.g. GitHub Copilot, Claude Code) to improve development efficiency and code quality

Why do we need you?

You will be responsible for:

• Design, develop, and maintain backend services using Java (17+/21) and Spring Boot

• Build and evolve scalable, high-performance backend applications and RESTful APIs

• Contribute to system architecture decisions and technical design discussions

• Ensure high code quality by writing automated tests (unit, integration, and functional) using JUnit and TDD/BDD practices

• Apply object-oriented programming principles, design patterns, and clean code standards

• Deploy and manage applications using Docker and Kubernetes

• Collaborate with cross-functional teams to deliver reliable and scalable solutions

• Work with cloud platforms (AWS, Azure, or GCP) to support application deployment and infrastructure

• Implement and maintain CI/CD pipelines (e.g., Jenkins, GitHub Actions, GitLab CI)

• Work in Linux environments and support operational tasks

• Implement observability practices, including logging, metrics, and distributed tracing

• Ensure application security by following secure coding practices and addressing vulnerabilities

What we can offer?

• An international working environment, atmosphere that stimulates development,

• Individual career path,

• Lufthansa Group membership benefits,

• Employment Contract,

• Salary in the range of 8 000 - 21 000 zł gross

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

• Workplace adjusted to employee's needs,

• 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.

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