Senior .Net Software Engineer - Lisbon Based

1global; Lisboa; Híbrido; EUR 45 000 - 70 000; Tempo integral

Resumo da oferta

1GLOBAL is seeking a driven full-stack developer to join our Lisbon-based R&D hubs, delivering high-impact features for a global mobile connectivity platform.

You will build with .NET, Golang, and Java, design scalable REST APIs, and work with cloud-native tech in an Agile environment, while mentoring junior teammates and maintaining high code quality.

Join a fast-growing international team and contribute to a resilient, secure, and scalable product suite for customers worldwide.

Qualificações

• Strong knowledge and experience in the development of .NET applications.

Responsabilidades

• 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

Conhecimentos

.NET

Golang

Java

Full-stack

Testing

REST APIs

Relational DB

CI/CD

Git

Docker

Kubernetes

Git-flow

Cloud

English

Ferramentas

Docker

Kubernetes

Git

CI/CD

Descrição da oferta de emprego

About Us
1GLOBALis 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 than70 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 exceedingUS$200 millionand profits of overUS$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 KoçandPyrros 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 to500 experts across 15 countriesis united by a single ambition: to redefine global mobile connectivity through technology, scale, and execution excellence.

About the Team

You will be part of a dynamic full-stack development team driving the core delivery and full life-cycle of our product lines. We are seeking a driven and intelligent individual with a proven history of bridging product and technology teams at product-led growth companies.

About the Role

• 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

Requirements

About You

• Strong knowledge and experience in the development of .NET applications;
• Knowledge of Golang and Java is a plus;
• Aspiration to become a full-stack developer;
• Experience with unit/integration/e2e testing (test driven development is a plus);
• Proficiency with REST APIs, both in implementing and consuming the interfaces;
• Familiarity with relational databases, CI/CD flows, Git, Docker, and Kubernetes;
• Familiarity with development tools and processes (Git-flow, peer reviewing);
• Good understanding of cloud services and scalable infrastructure;
• Excellent communication skills (fluent in English, both written and spoken), with a self-motivated and autonomous mindset.

Why 1GLOBAL?

• 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 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.

1GLOBAL is a trading name of 1GLOBAL Holdings B.V.