DevOps Team Lead - On-Prem & Cloud Infrastructure job opportunity at 1GLOBAL.

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Date2026-02-26T17:29:11.924Z bot
1GLOBAL DevOps Team Lead - On-Prem & Cloud Infrastructure
Experience: General
Pattern: Full-time
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degreeHigh School (S.S.C.E)
loacation São Paulo, Brazil
loacation São Paulo....Brazil

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 Lead a high-impact, global team of Senior DevOps Engineers as we redefine what hybrid infrastructure looks like. You’ll be the guiding hand helping your team connect our on-premise power with cloud-native flexibility. If you enjoy orchestrating complex systems and leading a diverse, multi-cultural team through a unified vision, you’ll find a home here. About the Role Team Leadership : Lead, mentor, and develop a team of DevOps and Systems Engineers, balancing high-level cloud automation with deep-dive systems performance and workload priorities. Hybrid Infrastructure Ownership : Design, deploy, and operate complex runtime infrastructure across AWS and physical on-premises data centers , managing the full stack from bare metal to the application layer. Low-Level Systems Engineering : Drive deep OS-level tuning (Linux kernel, I/O scheduling, memory management) and advanced networking (BGP, Layer 2/3 switching, SDN) to optimize workload performance and density. Database & Storage Performance : Oversee the architecture and performance tuning of distributed databases and storage systems, ensuring high-throughput, low-latency data persistence across hybrid environments. Kubernetes & Orchestration : Lead the evolution of Kubernetes and container orchestration, focusing on bare-metal clusters , custom CNI plugins, and service mesh performance. Modern Workflows: Drive the adoption of GitOps workflows using Argo CD and Crossplane , extending automation to manage physical assets and cloud resources via a unified control plane. Security Posture: Continuously improve infrastructure security, from hardened OS kernels and physical access controls to cloud-native security best practices. About You Must-haves Deep Linux Internals: Expert-level knowledge of the Linux Kernel (process management, signals, namespaces, cgroups) and the ability to perform performance profiling using tools like perf, strace, bpftrace, or ftrace. Advanced Networking (L2–L4): Proven experience with low-level networking, including BGP/OSPF routing , VLAN tagging, Load Balancing algorithms, and tuning TCP/IP stack parameters (e.g., congestion control, buffer sizes). Physical Infrastructure & Virtualization: You must understand (virtual) hardware life-cycle management (firmware, BIOS/UEFI, RAID). Database Systems & Tuning: Experience managing and tuning database performance (PostgreSQL, MySQL, or NoSQL) at the OS and disk I/O level, understanding WAL, vacuuming, and memory-mapped files. · Systems-Level Scripting: High proficiency in Python or Go , plus advanced Bash scripting for automating low-level system tasks and interacting with hardware APIs. Infrastructure as Code (IaC): Deep experience with Ansible (for configuration/state management) and Terraform (for hybrid resource orchestration). Nice-to-haves Service Mesh & CNI Depth: Experience implementing and troubleshooting Kubernetes CNI plugins (Cilium, Calico) or Service Meshes (Istio, Linkerd) with a focus on network latency and security. Storage Engineering: Knowledge of distributed storage protocols and systems like Ceph, ZFS, or GlusterFS . Specialized Observability: Experience setting up high-cardinality monitoring with Thanos/Cortex and custom exporters for hardware-level health (IPMI, SMART data). Compliance & Hardening: Experience with CIS Benchmarks , SELinux/AppArmor enforcement, and hardware security modules (HSM). Public Cloud Hybridity: Experience using AWS Direct Connect or Site-to-Site VPNs to create seamless connectivity between on-premises machines and cloud-native services.

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