.Net Backend Team Lead

1GLOBAL is a technology-driven global mobile communications leader, built to help enterprises unlock the full potential of mobile connectivity at scale. Powered by a best-in-class telecom platform – including our own owned and operated global mobile core network, a full end-to-end eSIM technology stack, and an extensive portfolio of telecom licenses – 1GLOBAL operates as a fully regulated telecommunications provider across 40 countries worldwide. Combined with our privileged access to the global wholesale telecom market, this positions us uniquely to deliver seamless, compliant, and scalable connectivity solutions anywhere in the world.

We serve many of the world’s leading banks, enterprises, and digital-first businesses, including neo-banks, 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 exceeding US$200 million and profits of over US$25 million, we generate strong cash flows and fund our growth independently—continuously investing 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 telecommunications offerings.

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.

Position Overview

We are looking for a talented and experienced engineering leader to join our team and lead the implementation, scaling, and growth of multiple platform software solutions that deliver complex features to Business verticals. As a Team Lead, you will act as both a technical authority and an engineering manager, responsible for guiding technical direction, ensuring delivery, and fostering team growth. This role blends technical expertise, leadership, and strategic vision to build scalable and reliable solutions.

You’ll be part of an international environment, working closely with cross-functional teams to shape and evolve our platform and digital experiences. We value teamwork and embrace a culture of ownership—our engineers are both autonomous and accountable for their deliverables. We are deeply customer-focused and committed to building software that creates real value for our users and the business.

Fluency in English is essential for this role. Please ensure your CV is submitted in English as part of your application.

Key Responsibilities

• Interpret business needs from customers, stakeholders, and product managers, translating them into clear and actionable development tasks.
• Design, document, and communicate scalable solution architectures, assessing technical impact, effort, and resource requirements.
• Own the technical knowledge over the full domain and ensure effective system integration.
• Design and implement scalable backend services, leveraging cloud technologies such as AWS.
• Drive engineering maturity, fostering customer‑centric design and architecture practices at scale.
• Promote and enforce best practices in coding standards, software quality, code reviews, and system architecture.
• Oversee CI/CD pipelines, ensuring smooth, reliable deployments and high system stability.
• Manage project timelines, prioritize team activities, and ensure predictable, on‑time delivery of features and solutions.
• Lead by example, mentor engineers, and provide guidance to support their technical growth and career development.
• Ensure strong team engagement, motivation, continuous learning, and a collaborative engineering culture.
• Participate in recruitment efforts and uphold high standards for technical excellence across the team.

Requirements:
Must Have

• Proven technical leadership and people management experience (team lead or similar).
• Strong emotional intelligence, communication, and cross‑functional collaboration skills.
• Ability to balance short‑term delivery pressure with long‑term technical vision.
• Experience managing multiple projects simultaneously.
• Experience developing and operating scalable, distributed systems.
• Strong software architecture skills, including microservices, system design, and performance optimization.
• Deep understanding of concurrency, asynchronous workflows, and performance best practices.
• Commitment to clean code, testing, quality, and full software lifecycle ownership.
• Proficiency in .NET.
• Cloud experience with AWS, GCP, Azure, or similar platforms.
• Solid understanding of CI/CD pipelines, automated testing, and DevOps principles.
• Familiarity with containerization technologies (Docker, Kubernetes).
• Expertise in RESTful API design and implementation.
• Solid knowledge of relational (PostgreSQL) and NoSQL databases.
• Familiarity with event-driven systems such as Kafka or RabbitMQ.
• Knowledge of networking fundamentals and security best practices.
• Experience with observability tools (Prometheus, Grafana, etc.).

Nice to Have

• Experience with Go is a plus.
• Experience in Telecom is a plus.

Benefits:
What we offer?

• CLT contract — enjoy job stability and reliable benefits that value your work
• Quarterly performance bonuses to reward your hard work and achievements
• Meal allowance paid into Caju card — R$100 per working day
• Health insurance with SulAmérica — 50% covered by the company
• Extended parental leave - 180 days of maternity leave and 20 days of paternity leave.
• Daycare allowance provided to mothers with children under 3 years old — R$500 per month per child
• Kickstart your journey with an exciting welcome onboarding trip to one of our European offices (Lisbon or Berlin)!

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.