Senior Java Software Engineer

About Us

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GLOBAL is a technology-driven global mobile communications provider, delivering global connectivity solutions to enterprises and consumers. Powered by a best-in-class telecom platform with its own owned and operated global mobile core network in 15 countries, fully fledged in-house developed eSIM technology, and an extensive portfolio of telecom licenses; 1

GLOBAL operates as a fully regulated telecommunications provider across 43 countries worldwide.

The company serves many of the world's leading banks, multinational enterprises, global retailers and digital-first businesses, including neo-banks, global fast moving consumer goods companies, travel leaders, and payment service providers. Today, 1

GLOBAL connects more than 80 million people and devices globally, enabling our customers to launch, scale, and innovate with confidence in the mobile ecosystem.

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GLOBAL is a profitable, fast-growing business. With full-year revenues in 2025 exceeding US $200 million and profits of over US $25 million, we generate strong cash flows to fund our growth allowing us to continuously invest in infrastructure, platform innovation, and global expansion. In 2026 also the parent of the Lidl Group acquired a 10% interest in 1

GLOBAL as part of a deal for Lidl to offer globally to its 180 million consumers communication services. Recent years have marked a defining phase in 1

GLOBAL's journey, with major enterprise and mass-consumer client wins accelerating its evolution into a global mobile connectivity powerhouse, purpose-built to enable consumer brands to enter and succeed with their own aspirations to offer telecommunications services to their clients.

Founded in 2022 by experienced technology entrepreneurs, Hakan Koc and Pyrros Koussios, 1

GLOBAL has rapidly emerged as a European technology leader shaping the future of global telecommunications. It operates as a fully regulated Mobile Virtual Network Operator (MVNO) in 15 countries and as a regulated telecom operator in an additional 28 markets. Headquartered in the Netherlands, with world-class R&D hubs in Lisbon, Berlin, and Sao Paulo, its team of close to 550 experts across 16 countries is united by a single ambition: to redefine global mobile connectivity through technology, scale, and execution excellence.

We are looking for a talented engineer to join our Consumer Group. You will join a development team responsible for the product delivery and in-life management of our B2C (better roaming) and B2B2C (API powering Revolut, nordVPN, etc.) products. The talented team is eager to learn and experiment with new technologies. We value teamwork and embrace a culture of fully owning our deliverables, meaning we are both autonomous and accountable for them.

• Build high-impact features and contribute to the architecture design; aim towards resiliency, scalability, security and fault tolerance;
• Advocate for high code quality, readability and high tests coverage;
• Promote best practices for a high-scale web (or mobile) environment;
• Work with an Agile methodology;
• Identify areas of improvement in the codebase and promote them through seamless integrations, documenting solutions and new flows;
• Mentor junior members when needed and contribute with meaningful reviews.

• 5+ years of experience in Java software development;
• Experience with unit/integration/e2e testing (test‑driven development is a plus);
• Proficiency with REST APIs, both in implementing and consuming the interfaces;
• Experience with development tools and processes (Git‑flow, peer reviewing);
• Familiarity with relatio‑nal databases, CI/CD flows, Git, Docker, and Kubernetes;
• Good understanding of cloud services and scalable infrastructure;
• Excellent communication…