Senior Java Engineer (Platform)

Required skills: Java, Spring, Microservice Architecture, REST API, SOAP API, Google Cloud Platform, SQL, JUnit, GitHub, Maven What this role actually is: A large, highly distributed Java platform serving airlines worldwide is being containerized and moved onto Google Kubernetes Engine. You would not be on the migration crew, and that is the deliberate part worth understanding before you scroll past. Our client is hiring senior application engineers precisely so their own subject matter experts can be freed up for the containerization work without the product standing still. You take on the platform's ongoing engineering. In practice that means you go deep into a mature product rather than shallow across a migration, and you do it next to a rewrite that is genuinely redesigning parts of the system rather than repackaging them. When the migration reaches the components you own, you are the person who knows them. What you would work with: Java 11, Tomcat, Oracle Messaging and integration: JMS with XML messages, web services over SOAP and JSON, some RMI on its way out, plus MQ, Pub/Sub and Kafka A platform that is extensible by its own users: they build and deploy their own use cases on it through a Java SDK, with plugins, business rules and data domain extensions, alongside a no code business process designer PII data. No PCI in scope. What we need from you: Our client stated explicitly that there is no nice to have tier here. Every line is a requirement, and you will be asked to demonstrate each one in the technical interview. Core Java 11+ Spring Microservices architecture REST and SOAP APIs GCP SQL JUnit Familiarity with containerization environments GitHub, Maven, Jenkins 7+ years of commercial experience Benefits: General benefits - depends on the form of employment Hybrid work model combining office & remote work (Kraków, hybrid, three days per week on site) Standard business hours. No shift work, no on-call duty Fully remote is considered only where the experience or the fit is exceptional. If that is you, apply anyway and say so 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