Java Developer (Senior)

Our client is an international supplier of communication and information systems for control centers with safety-critical tasks. They specialize in developing and distributing 'Control Centre Solutions' for the Air Traffic Management and Public Safety & Transport sectors. As a Software Developer, you will join a dedicated team of professionals to actively contribute to the development of the next-generation platform for safety-critical domains.  This platform is designed to address the highest quality needs in air traffic management, providing reliability, real-time performance, and security as critical success factors. The digital platform facilitates seamless integration of voice and data applications, breaks down operational silos, and prioritizes cyber security throughout the solution lifecycle.  By streamlining control center tasks and enabling integrated controller operations on a single screen, the platform empowers organizations to enhance service levels without increasing headcount.   Position: Java DeveloperIndustry: Air Traffic ManagementNumber of Open Vacancies: 1Type of Contract: B2B / Employment contractPreferred Scale of Work: on average 8 hours/dayProject methodology: SCRUM (SAFe) Start Date: ASAP, remote (the candidate must be located in Poland), long-term cooperationLocation: PolandTechnologies used in the project: Java 17/21, Golang, Python RedHat 8/10Docker RabbitMQ Postgresql, CQL (Cassandra) React, WebSockets Jenkins, Ansible You will work on a microservices-based framework used across the company to run and integrate multiple products. You will develop reusable services, software packages, and libraries to be used by other teams in the company. The product runs on RedHat, handles the deployment and configuration of the OS and supports the configuration and orchestration of services packaged as Docker images. We are developing for a safety-critical environment, following industry standards, where high availability and redundancy is a basic requirement. You will develop loosely coupled, highly available Java services, with lightweight REST and AMQP, (RabbitMQ) interfaces, that use CQL (Cassandra) to store data. If you like to step out of your comfort zone, we also have components written in Go if you want to learn a new language. Your tasks:Take part in the daily work of the Scrum Team Contribute to the design and architecture of the product Write code according to the company processes and standards Write unit and component tests Support for the QA in testing and developing the automated system tests Writing documentation and requirements Clean Code / Code Review What we expect from you:7+ years of software development experience in Java Knowledge of object-oriented concepts, design patterns and SOLID principles Passionate about clean, unit tested and maintainable code Experience with microservice architecture Experience with SOAExperience with REST, messaging/AMQP, WebSockets Experience with distributed systems and understanding of concepts (CAP theorem, redundancy, high availability, consensus protocols, etc.) Know-how on continuous integration and delivery Good English skills (both written and spoken)  Nice to have:Experience with Go/Python is a plus Knowledge of Linux and Bash IP networking know-how Domain Driven Design experience is a plus Experience in configuring CI/CD pipelines is a plus Experience with Github CopilotWhat we can offer:flexible working hoursmedical insuranceinternational clientsremote workannual bonuseslife insurancenon-corporate work atmosphereintegration eventsadditional days offtraining and development budgetWe look forward to receiving your application!