Remote Staff Engineer role responsible for designing and building scalable automation and reliability pipelines for KernelCare (live Linux kernel patching). Requires strong Linux background, backend Python experience, comfort reading C, system design, production-grade implementation and ongoing ownership of product components. Role combines ~70% engineering and ~30% technical product ownership and expects regular use of AI-assisted development tools.

CloudLinux seeks an Engineering Team Lead to run a remote senior team (Go/Python engineers, deliverability and anti-spam specialists) for Imunify Email & Email Gateway. Responsibilities include delivery planning, technical direction, production health (SLOs, observability, incident command), and people leadership (1:1s, hiring, mentoring). Requirements: 5+ years as a software engineer, 2+ years leading engineers, strong Linux and backend production experience, observability/ML familiarity, English proficiency, and availability to work EU hours.

CloudLinux is hiring a Junior Infrastructure Engineer to join the Infrastructure team. Responsibilities include user and access management, provisioning and maintaining hosts across bare metal, public and private clouds, DNS and domain management, firewall and OS updates, monitoring and incident response, and building CI/CD automation. Required: working knowledge of RHEL-based OS (CentOS/AlmaLinux), networking fundamentals, familiarity with Ansible, containers/VMs, and proficiency in English. Role is fully remote (work from any location worldwide).

Work involves investigating upstream Linux kernel fixes, backporting patches to older RPM- and Debian-based distributions, resolving conflicts, building reproducible kernel packages, and validating patched kernels via tests and regression analysis. Requires strong C and Linux debugging skills, kernel patching or backporting experience, familiarity with Git and GNU build tools, and automation experience (Python, Go, Shell).

CloudLinux is hiring a remote DevOps Engineer for the Patchman team to design, build, and maintain backend infrastructure, operate a large fleet of servers, improve CI/CD pipelines, resolve complex production issues, and modernize legacy systems. The role requires 5+ years as a Backend or DevOps developer, strong Linux administration, experience with Kubernetes, Docker, high-throughput data pipelines (Kafka/ClickHouse/RabbitMQ), PostgreSQL/Redis, monitoring and CI/CD best practices. English (upper-intermediate) is required. Locations listed include Poland, Spain, Portugal, Serbia, Georgia, and Bulgaria; the position is fully remote with flexible hours.

CloudLinux seeks an experienced security engineer/researcher to design and ship a brand-new Node.js runtime protection product for Imunify360. The role requires end-to-end ownership — instrumentation strategy, implementation, deployment, and iterative improvement — and focuses on detection accuracy, runtime overhead, and operational telemetry. Candidates should have strong web application security experience, practical exploitation knowledge, detection-at-scale experience, and familiarity with Node.js and the JavaScript ecosystem is desirable. The position is fully remote (work anywhere).

Manage four language-focused teams (~18 engineers) responsible for CVE analysis, vulnerability assessment, and patch backporting across Java, JavaScript/Go, Python, and PHP ecosystems. Set technical direction, enforce security and release processes, drive CI/CD and tooling consistency, and own SLA compliance and cross-team coordination. Requires 6+ years hands-on development experience and 3+ years engineering leadership, with strong Java experience and security research familiarity.

Hands-on senior engineering role responsible for designing, implementing, monitoring, automating, documenting, and securing cross-DC and hybrid connectivity (BGP, IPsec, routing policy, firewalling, DNS, Cloudflare). Own end-to-end network changes, incident response, runbooks, topology docs, IPAM, and observability improvements. Remote-first role with emphasis on automation, review, and production reliability.

KernelCare (CloudLinux) seeks experienced Kernel Developers to produce and maintain Linux kernel patches focused on security (CVE fixes) and functionality. Responsibilities include updating kernels with security fixes, supporting existing functionality, implementing features, and optionally creating Python/Bash automation for testing. Required skills: strong C, Linux kernel subsystems knowledge, GDB/debugging, Git, scripting, and English (upper-intermediate+). Fully remote with flexible hours; benefits include paid vacation, medical insurance compensation, education budget, and other perks.

Hands-on production ownership of PostgreSQL reliability (HA design, Patroni, PgBouncer, replication, failover, backups/PITR, restore validation, query tuning) and support for ClickHouse, MongoDB, and Redis. Responsibilities include automation (Ansible, Terraform/OpenTofu, GitLab CI/CD, scripting), improving observability (Grafana, metrics, logs, SLOs, alerts), building self-service DB workflows, and incident response. Role expects deep PostgreSQL experience (typically 5+ years), strong Linux and infrastructure fundamentals, and English (upper-intermediate/B2) communication.

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.