Senior Accountant

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 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; 1GLOBAL 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, 1GLOBAL connects more than 80 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. In 2026 also the parent of the Lidl Group acquired a 10% interest in 1GLOBAL 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 1GLOBAL’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 Koç and Pyrros Koussios, 1GLOBAL 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 São 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.

About the Role

As we embark on a pivotal journey towards becoming a listed entity within the next three years, we are building a strong Finance team to help steer the company through this transformative era. The Senior Accountant at 1GLOBAL will own core accounting functions while getting genuine exposure to the technical and cross-functional work that shapes a growing global business, with real scope to take on special projects and technical accounting topics as they prove themselves.

This role will be located in Lisbon, and will report into the Deputy Group controller. This role also offers close proximity to senior finance leadership and the wider group team.

This position offers substantial opportunity for professional growth within a supportive, forward-thinking environment. If you're naturally curious, ask good questions, and want to be trusted with increasing responsibility as you prove yourself, we would be delighted to hear from you.

About the Responsibilities

• Conduct detailed balance sheet reconciliations to ensure accuracy in reporting
• Prepare and submit VAT returns, ensuring compliance with regulations
• Prepare financial statements for a number of entities
• Support wholesale cost calculations as part of month-end close
• Provide support in worldwide audits, collaborating with various teams and external partners
• Assist in finance automation projects, identifying opportunities for process improvement
• Oversee the automated cash reconciliation process, ensuring its efficiency and reliability
• Gain exposure to IFRS 16 lease accounting as part of the close process
• Improve processes for the finance team to optimise efficiency and effectiveness

Requirements

About You

• Fully qualified accountant (ACA, ACCA, CIMA, CPA or equivalent)
• 3-5 years' experience in an accounting or finance role, with Big 4 training
• Strong understanding of accounting principles and financial reporting
• Naturally curious, with a genuine interest in understanding the "why" behind the numbers, not just the "how"
• Comfortable asking questions and being challenged, with an appetite for increasing responsibility as you prove yourself
• Proficiency in Excel and accounting software
• Excellent analytical, organisational, and communication skills

Benefits

Why 1GLOBAL?

• Growth Opportunities: Advance your career in one of the fastest growing telecommunications companies, expanding over 50% year-on-year under the leadership of successful tech entrepreneurs.
• Major Transaction Exposure: Be in the driver’s seat for transactions that will have an impact on the future telco industry.
• Work 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 individuals.
• Dynamic Work Environment: Thrive in a collaborative, fast-paced workplace where innovation is encouraged, and every contribution counts.
• Professional Development: Work alongside industry experts to enhance your skills and knowledge in a cutting-edge field.
• International Experience: Gain opportunities to work in different 1GLOBAL offices around the world as you grow within the company.
• Open Communication Culture: Join a team where your ideas are heard, and open dialogue is encouraged, fostering a supportive and transparent work environment.
• Get Things Done Attitude: Be part of a results-driven team that values efficiency, creativity, and the drive to make a tangible impact in the industry.

1GLOBAL 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.