About 1GLOBAL
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 SIM 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 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.
Key Responsibilities
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 by design
Analyze network traffic and security telemetry using flow logs, metrics, and targeted packet inspection where required
Ensure alignment with internal security policies and external frameworks (CIS, NIST, ISO 27001, etc.)
Produce and maintain clear documentation, including security architectures, runbooks, and incident response playbooks
Act as a security champion, driving best practices, awareness, and secure engineering culture across teams
Requirements
A minimum of 3+ years Cloud Security /DevSecOps/ Infrastructure Security experience
Strong AWS security fundamentals (IAM, KMS, GuardDuty, Config, Security Hub)
Solid Linux security and cloud networking fundamentals
Hands‑on Kubernetes security (RBAC, NetworkPolicies, pod security, image scanning)
Infrastructure as Code (Terraform) and Git‑based workflows
Scripting for automation (Python or Bash)
Experience with vulnerability management and container security
Security‑first mindset with strong troubleshooting skills
Experience with WAFs and cloud DDoS protection
Comfortable with packet inspection, flow analysis, and traffic monitoring (tcpdump, Wireshark, Suricata, etc.)
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‑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.
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