Senior Java Software Engineer

TL;DR

Senior Java Software Engineer (Java/Telecommunications): Building and operating high-scale B2C and B2B2C connectivity products with an accent on resilient architecture, scalability, security, and fault tolerance. Focus on designing REST APIs, improving test coverage, integrating cloud infrastructure, and mentoring junior engineers.

Location: Onsite in Berlin, Germany

Company

A technology-driven telecommunications provider building global connectivity solutions through its mobile core network, eSIM technology, and telecom platform.

What you will do

• Build high-impact features for B2C and B2B2C connectivity products.
• Contribute to architecture design focused on resiliency, scalability, security, and fault tolerance.
• Develop and consume REST APIs for high-scale web and mobile environments.
• Improve code quality, test coverage, documentation, and development workflows.
• Collaborate within an Agile team and conduct meaningful peer reviews.
• Mentor junior engineers when needed.

Requirements

• 5+ years of professional Java software development experience.
• Experience with unit, integration, and end-to-end testing.
• Proficiency in implementing and consuming REST APIs.
• Experience with Git-flow, peer reviews, relational databases, CI/CD, Docker, and Kubernetes.
• Good understanding of cloud services and scalable infrastructure.
• Fluent English in written and spoken communication, with an autonomous and self-motivated approach.

Culture & Benefits

• Collaborative, international, and fast-paced work environment.
• Opportunities for professional growth in a rapidly expanding telecommunications business.
• Exposure to major transactions and developments shaping the telecommunications industry.
• Access to experienced technology leaders, advisors, and industry experts.
• Opportunities to work in different international offices as your career develops.
• Open communication culture focused on ownership, innovation, and tangible results.