About Us1 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 - including its own owned and operated global mobile core network, fully fledged in-house developed e SIM technology, and an extensive portfolio of telecom licenses -1 GLOBALoperates 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,1 GLOBALconnects more than 70 million people and devices globally, enabling our customers to launch, scale, and innovate with confidence in the mobile ecosystem.1 GLOBALis 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 Koçand Pyrros Koussios,1 GLOBALhas rapidly emerged as a European technology leadershaping 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 TeamWe 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 B2 C (betterroaming) and B2 B2 C (API powering Revolut, nord VPN, 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.About the RoleBuild 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 reviewsRequirementsAbout You4+ 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 relational databases, CI/CD flows, Git, Docker, and Kubernetes;Good understanding of cloud services and scalable infrastructure;Excellent communication skills (fluent in English, both written and spoken), with a self‐motivated and autonomous mindsetBenefitsWhy 1 GLOBAL?Growth Opportunities: Advance your career in one of the fastest growing telecommunications companies, expanding over 100% year‐on‐year under the leadership of successful tech entrepreneursMajor Transaction Exposure: Be in the driver's seat for transactions that will have an impact on the future telco industryWork with a Talented Team: From the Board and the Founders to the Senior Management Team, you will collaborate daily with the most capable and renowned external advisors, and constantly being exposed to talented and driven individualsDynamic Work Environment: Thrive in a collaborative, fast‐paced workplace where innovation is encouraged, and every contribution countsProfessional Development: Work alongside industry experts to enhance your skills and knowledge in a cutting‐edge fieldInternational Experience: Gain opportunities to work in different 1 GLOBAL offices around the world as you grow within the companyOpen Communication Culture: Join a team where your ideas are heard, and open dialogue is encouraged, fostering a supportive and transparent work environmentGet Things Done Attitude: Be part of a results‐driven team that values efficiency, creativity, and the drive to make a tangible impact in the industry1 GLOBAL is an equal opportunity employer, we value your character as much as your talent. Diversity drives our innovation, and we offer a collaborative, dynamic, and international work environment. We are excited for you to join our mission to revolutionise connectivity globally.