Senior/Lead Java Developer

We are looking for a Software Engineer to join a team responsible for modernizing a mission-critical aviation platform used by tens of thousands of customers worldwide.

You will help design, build, and evolve cloud-hosted backend services that support the distribution of aviation data across desktop, mobile, and aircraft-connected workflows. This is a unique opportunity to work on a high-impact product while contributing to a large-scale modernization initiative focused on cloud-native architecture, automation, scalability, security, and operational excellence.

Working closely with cross-functional teams, you will help transform a well-established platform into a modern, resilient, and highly scalable ecosystem capable of supporting future growth and new product offerings.

Key responsibilities

• Develop and modernize backend services hosted in AWS
• Design and implement scalable, resilient cloud-native solutions
• Build and improve APIs, integrations, and automated backend processes
• Enhance CI/CD pipelines, infrastructure automation, monitoring, and observability
• Manage and troubleshoot Kubernetes-based environments and containerized applications
• Support production systems and drive reliability, security, and operational improvements
• Collaborate with product, mobile, desktop, QA, and DevOps teams to deliver high-quality solutions
• Leverage AI-assisted development tools to improve engineering efficiency while maintaining high standards of quality and security
• Ideal candidate profile
• Experience developing backend applications in cloud environments
• Strong knowledge of AWS and cloud-native architectures
• Hands-on experience with Linux, Docker, Apache, Java and Spring Boot
• Experience with Kubernetes and containerized workloads
• Experience with CI/CD, Infrastructure as Code, and automation
• Understanding of cloud security, monitoring, and production support practices
• Strong troubleshooting and problem-solving skills
• Ability to work independently and collaborate within distributed teams
• English min. B2.

Nice to Have:

Experience modernizing legacy applications and services

• Experience with SQL Server and MySQL
• Experience building highly available and resilient production systems
• Experience using AI-assisted software development tools
• Conditions
• Employment type: B2B or UoPLocation: Gdańsk
• Work model: 1 day a month in the office in Gdańsk or less frequently, depending on your availability
• Salary: 190 PLN net/h - to negotiate
• Benefits: life insurance, private healthcare, Multisport card