Senior Java Software Engineer - Global Connectivity Platform

1GLOBAL is a technology-driven global mobile communications provider that delivers global connectivity solutions to enterprises and consumers. The company operates as a fully regulated telecommunications provider across 40 countries worldwide and serves many of the world's leading banks, enterprises, and digital-first businesses. As a Senior Java Software Engineer, you will be part of a new backend team in Warsaw working on the evolution of 1GLOBAL's eSIM, global connectivity platform, and IoT solutions.

Requirements

• 5+ years of professional experience in Java backend development
• Experience working with production backend systems
• Solid understanding of REST APIs, databases, and messaging
• Experience with unit, integration, and e2e testing
• Familiarity with CI/CD pipelines and modern development workflows
• Experience working with Git, Docker, and Kubernetes-based environments
• Good understanding of cloud services and scalable infrastructure
• Ability to work independently and take ownership

Benefits

• Growth Opportunities
• Major Transaction Exposure
• Work with a Talented Team
• Dynamic Work Environment
• Professional Development
• International Experience
• Open Communication Culture
• Get Things Done Attitude