Java Team Lead job opportunity at 1GLOBAL.

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Date2026-03-04T12:05:15.472Z bot
1GLOBAL Java Team Lead
Experience: 6-years
Pattern: Full-time
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degreeHigh School (S.S.C.E)
loacation Berlin, Germany
loacation Berlin....Germany

About Us 1GLOBAL  is a technology-driven global mobile communications provider, delivering global connectivity solutions to enterprises and consumers. Powered by a best-in-class telecom platform – including its own owned and operated global mobile core network, fully fledged in-house developed eSIM technology, and an extensive portfolio of telecom licenses – 1GLOBAL operates as a fully regulated telecommunications provider across 40 countries worldwide. We serve many of the world’s leading banks, enterprises, and digital-first businesses, including neo-banks, global fast moving consumer goods companies, travel leaders, and payment service providers. Today, 1GLOBAL connects more than  70 million people and devices globally , enabling our customers to launch, scale, and innovate with confidence in the mobile ecosystem. 1GLOBAL 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. Recent years have marked a defining phase in our journey, with major enterprise and mass-consumer client wins accelerating our 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 Koç and Pyrros Koussios, 1GLOBAL has rapidly emerged as a European technology leader shaping the future of global telecommunications . We operate as a fully regulated Mobile Virtual Network Operator (MVNO) in 12 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 São Paulo, our team of close to  500 experts across 15 countries  is united by a single ambition: to redefine global mobile connectivity through technology, scale, and execution excellence. About the Team We are looking for a talented and experienced engineering leader to join our brand new team. You will be part of an international team, driving the development of 1GLOBAL's eSIM platform, including our consumer and IoT solutions.. We value teamwork and embrace a culture of fully owning our deliverables, meaning we are both autonomous and accountable for them. Highly focused on our customers and determined to build and deliver a valuable proposition.  Fluency in English is essential for this role, please ensure your CV is submitted in English as part of your application. About the Role Design and implement efficient and maintainable solutions, ensuring the best practices in software development.    Lead the development of robust, scalable, and high-performance micro-services architecture.    Collaborate with cross-functional teams, including frontend developers, product managers, and designers, to translate business requirements into scalable and efficient backend solutions.    Drive architectural decisions and contribute to the overall system design.    Develop and maintain RESTful APIs to facilitate seamless communication between different components of our platform while ensuring API security, performance, and reliability.    Design and optimize database schemes and work closely with the database administrators to ensure efficient data storage and retrieval.    Identify and address performance bottlenecks in the backend systems and continuously optimize and improve the efficiency of existing code and systems.    Mentor team members when needed and contribute with meaningful reviews.   About You  6+ years experience in java software development.   2+ years engineering leadership experience.   Good understanding of system architecture, cloud services (AWS) and scalable infrastructure.   Experience with unit/integration/e2e testing (test driven development is a plus).   Proficiency with REST APIs, both in implementing and consuming the interfaces.   Solid experience with relational databases, CI/CD flows, Git, Docker, and Kubernetes.   Excellent communication skills (fluent in English, both written and spoken), with a self-motivated and autonomous mindset.

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