Senior DevSecOps Engineer - Berlin / Lisbon / Warsaw

**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 - 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 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 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 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.

About the Team

We are looking for a talented  Senior DevSecOps / Cloud Security Engineer  to join our Technology Department, with a focus on strengthening and automating our security posture across cloud and hybrid infrastructure. 

As a DevSecOps / Cloud Security Engineer, you will be responsible for embedding security into every stage of our infrastructure lifecycle, from design to deployment. You will lead the implementation of cloud-native security controls in AWS, harden Kubernetes environments, and drive best practices across CI/CD pipelines. Your role includes continuous vulnerability management, network protection, monitoring for threats, and working with development, DevOps and IP teams to ensure secure-by-default practices. You'll also proactively identify risks, secure network perimeters, and automate remediation wherever possible.

This role can be based in our Berlin , Lisbon , or Warsaw offices. Relocation is required if you are not currently based in one of these cities.

About the Role

• Design, implement, and evolve scalable cloud security controls across AWS multi-account environments using security-as-code principles
• Own Kubernetes security architecture including workload isolation, RBAC, pod security standards, and network segmentation
• Embed security automation into CI/CD pipelines, including image scanning, IaC validation, and policy enforcement
• Continuously assess cloud and Kubernetes environments for vulnerabilities, misconfigurations, and emerging threats
• Design and maintain strong IAM and secrets management practices, enforcing least-privilege access
• Partner with DevOps, Platform, and IP/Network teams to deliver security controls as code and by design
• Analyze network traff