Cloud Linux Software

Senior Security Engineer - Node.js Proactive Defense (remote-only)

Full-time

14 days ago

Warsaw, Tbilisi, Sofia - Poland, Georgia, Bulgaria, Spain, Montenegro

Drive the Node.js Proactive Defense initiative: design and ship a V8/Node runtime agent that traces and blocks exploit primitives, define detection models and rule pipelines, integrate detections with Imunify360 telemetry and admin UI, and ensure production safety on shared hosting (low overhead, tenant isolation, CageFS/LVE compatibility). Requires a security-engineering mindset, runtime/exploitation knowledge, systems-level Linux development experience, and instrumentation experience (e.g., LD_PRELOAD, eBPF, ptrace).

Kernel Developer (fully remote, LATAM)

Full-time

18 days ago

Mexico City, Federal District, Buenos Aires - Mexico, Brazil, Argentina

CloudLinux / KernelCare is hiring experienced Kernel Developers to work fully remotely (LATAM) on Linux kernel development and live kernel patching. The role emphasizes strong C skills, Linux kernel subsystems, debugging (GDB), Git-based patch management, and security/CVE handling; Python and Bash scripting are optional. English at upper-intermediate (B2) or higher is required. Benefits include fully remote work, flexible hours and other company-provided benefits described in the posting.

Engineering Manager, Language Security (TuxCare)

Other

19 days ago

Warsaw, Bucharest, Sofia - Poland, Romania, Bulgaria, Armenia, Georgia

Manager-focused technical role responsible for leading four language teams (Java, JavaScript/Go, Python, PHP) totaling about 18 engineers. Accountable for technical direction, CVE analysis and patch backporting standards, CI/CD and tooling consistency, SLA delivery, and people management (hiring, performance reviews, onboarding) in a distributed, fully-remote environment.

Staff Engineer (worldwide remote, work anywhere)

Full-time

20 days ago

Warsaw, Tbilisi, Podgorica - Poland, Georgia, Montenegro, Czechia, Spain

TuxCare is hiring a Staff Engineer to lead architecture and implementation of a unified dependency graph and related cross-cutting systems. The role requires deep Python proficiency, frequent use of LLM-based tools, ownership of end-to-end lifecycle from prototypes to production, collaboration with multiple teams and stakeholders, and responsibilities including architecture, algorithm design, automation, reliability, mentorship, and product-direction activities.

Product Engineer (remote-only, Europe, LATAM)

Other

46 days ago

Warsaw, Madrid, Podgorica - Poland, Spain, Montenegro, Serbia, Georgia

CloudLinux seeks a Senior Product Engineer (remote) to own a product domain or platform component. Requires 8+ years software engineering experience, strong Linux and CI/CD skills, extensive use of LLM/AI tools in development, and responsibilities including coding, CI/CD maintenance, incident support, observability, prototyping, and product/operational leadership.

Senior IaaS / Kubernetes Platform Engineer (worldwide remote, work anywhere)

Other

46 days ago

Warsaw, Madrid, Lisbon - Poland, Spain, Portugal, Serbia, Georgia

Join the Infrastructure team to lead the evolution from an OpenNebula-based virtualization platform to a Kubernetes-native multi-tenant cloud (KubeVirt, Cluster API, vCluster). Responsibilities include Kubernetes platform engineering, Ceph storage operations, networking (BGP, EVPN/VXLAN, IPSec/WireGuard), SRE practices, and infrastructure automation using Terraform/OpenTofu and Ansible. Fully remote role with strong emphasis on documentation, runbooks, and cross-team English communication.

Senior Software Engineer (remote-only, Europe)

Other

67 days ago

Warsaw, Bucharest, Brno - Poland, Romania, Czechia, Spain, Portugal

CloudLinux is hiring a Senior Software Engineer to join the Imunify360 IDS/IPS team working on web traffic security (WAF, IDS/IPS) and high-performance Linux networking systems. The role is remote (Europe-listed locations), requires 8+ years of software development experience, strong production-level Go proficiency, experience with Linux production environments, and familiarity with AI-assisted development workflows and BDD.

SDET/QA Automation Lead (remote-only, worldwide remote)

Full-time

110 days ago

Poland, Spain, Georgia, Armenia, Romania

CloudLinux seeks an SDET/QA Automation Lead to transform a global remote QA team into an AI- and automation-first quality engineering function. Responsibilities include defining product quality metrics and multi-quarter QA roadmap, expanding and owning test infrastructure, improving test reliability, and mentoring SDETs. Tech stack includes Python, pytest, Playwright, Jenkins, GitLab CI, OpenNebula, S3/Ceph, Allure, Redash/ClickHouse, Slack, and Jira.

Senior Database Reliability Engineer (DBRE) & Architect (worldwide remote)

Full-time

149 days ago

Poland, Spain, Georgia, Armenia, Slovakia

Lead the evolution of an internal Database-as-a-Service: design HA deployments (PostgreSQL, ClickHouse, MongoDB, Redis), scale analytics ClickHouse clusters, maintain Airflow/Redash infrastructure, implement Reliability-as-Code (SLO/SLI, self-healing), and modernize stack using Terraform, Ansible, Kubernetes and cloud providers. Remote role supporting global teams.