Senior Java Developer

Project Info

The project centers around a high-performance Kotlin application consisting of 7 functional services. It serves as a vital translation layer for JSON/XML web service communications within the global airline content distribution ecosystem. Deployed in a Google Cloud Platform (GCP) environment, the system powers integration and communication for multiple airline carriers and agencies worldwide.

Key Functional Areas

• Protocol Translation: Managing XML/JSON web services communication across the global airline distribution network.
• Microservices Architecture: Maintaining and expanding a suite of 7 functional Kotlin services hosted on cloud infrastructure.
• Global Ecosystem Integration: Enabling high-availability connections for international travel agencies and airline platforms.

Responsibilities

• Design, develop, and maintain cloud-native microservices using Kotlin and Java.
• Build and support RESTful APIs, web service interfaces, and integration components.
• Maintain CI/CD pipelines, deployment processes, and cloud infrastructure integration.
• Work with Linux-based virtualized environments, Docker, and Kubernetes.
• Troubleshoot complex issues, optimize application performance, and write clean, maintainable code.
• Collaborate within an agile environment on simultaneous projects and deliver technical goals.

Requirements

• Experience: 4+ years of relevant professional experience as a Java or Kotlin Developer in complex software projects.
• Core Tech Stack: Proficiency in Kotlin and/or Java (with full willingness to code in Kotlin), Spring, REST Services, Git, Maven, and Jenkins.
• Cloud & OS: Hands-on development experience with GCP, Kubernetes, Docker, and user-level Linux/virtual machines.
• Work Model: Hybrid work setup (2-3 days a week from the Krakow office, working in the CET time zone).
• Soft Skills: Strong analytical thinking, task independence, excellent English communication, and a collaborative, team-first mindset.
• Nice to Have: Experience with AI-related concepts and tools, Prometheus/Grafana monitoring, or specialized web services infrastructure.

Must possess a legal work permit in Poland

Benefits

General benefits - depends on the form of employment

• Hybrid work model combining office & remote work
• Attractively located office with collaboration spaces
• Onsite parking space for employees
• Referral program with financial bonus
• Life Insurance
• Budget for development (including language courses and others), clear career path with the possibility to gain experience in international environment
• Access to internal Learning Platform with multiple trainings oriented for professional growth

Lifestyle benefits

• Access to MyBenefit platform (Multisport included)
• Team Building activities
• Charity initiatives
• Working environment promoting diversity and inclusion

Health benefits

• Private medical care - Platinum Package