Java Team Lead

1GLOBAL; Deutschland; Vor Ort; EUR 80.000 - 100.000; Vollzeit

Zusammenfassung

A leading telecommunications company in Germany is seeking an experienced engineering leader to drive the development of their eSIM platform. The ideal candidate will possess over 6 years of experience in Java software development and substantial experience in engineering leadership. Responsibilities include designing scalable solutions, leading a team, and developing RESTful APIs. Joining an innovative environment, you will have opportunities for professional and international growth while working within a diverse team focused on making a tangible impact in the telecom industry.

Leistungen

Growth Opportunities

Dynamic Work Environment

Professional Development

International Experience

Qualifikationen

• 6+ years experience in Java software development.
• 2+ years engineering leadership experience.
• Good understanding of system architecture and scalable infrastructure.
• Experience with testing (unit/integration/e2e) is a plus.
• Proficiency with REST APIs, in implementation and consumption.
• Solid experience with relational databases and CI/CD flows.

Aufgaben

• Design and implement efficient and maintainable solutions.
• Lead the development of scalable micro-services architecture.
• Collaborate with cross-functional teams for backend solutions.
• Drive architectural decisions and contribute to system design.
• Develop and maintain RESTful APIs for platform communication.
• Design database schemas and ensure efficient data storage.
• Address performance bottlenecks and improve system efficiency.
• Mentor team members and provide meaningful code reviews.

Kenntnisse

Java software development

Micro-services architecture

REST APIs

Cloud services (AWS)

Communication skills (English)

Tools

Docker

Kubernetes

Git

Jobbeschreibung

1GLOBAL is a technology-driven global mobile communications provider dedicated to empowering enterprises worldwide to unlock the full growth potential of mobile connectivity. With a best-in-class telecom technology platform, a comprehensive suite of globally viable regulatory licenses, and privileged access to the telecom wholesale market, 1GLOBAL is uniquely positioned to deliver seamless compliance and connectivity solutions. Serving the world’s leading banks, corporations, and digital-first businesses—including neo-banks, travel companies, and payment service providers—1GLOBAL connects over 43 million devices globally.

With 2024 full-year revenue exceeding US$100 million and in line to exceed US$200 million in FY25, 1GLOBAL is a profitable business generating significant cash flows to fund its ongoing investments in infrastructure, transformation, and growth. 2024 saw major client wins and marked 1GLOBAL’s evolution from a multi-market telecommunication provider to a global technology-driven mobile connectivity powerhouse.

Established in 2022 by experienced tech founders and entrepreneurs Hakan Koç and Pyrros Koussios, 1GLOBAL is a European technology leader driving digital transformation in the global telecommunications market. It operates as a fully regulated Mobile Virtual Network Operator (“MVNO”) in ten countries and as a regulated telecommunications operator in an additional 31 countries. Headquartered in the Netherlands, with world-class R&D hubs in Lisbon, Berlin, and São Paulo, 1GLOBAL employs over 450 experts across 15 countries.

Position Overview

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.

Key Responsibilities

• Design and implement efficient and maintainable solutions, ensuring 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.

Requirements

• 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.

Benefits

• 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 be exposed to talented and driven individuals.
• Dynamic Work Environment : Thrive in a collaborative, fast‑ 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.

Why 1GLOBAL?

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.