CloudLinux

SDET

• Diagnose, isolate, and implement remedies for package failures caused by errors in our updates.
• Prepare all needed documentation sets, clarifying all aspects of the product’s environment.
• Add new automated test scenarios (Python), maintain continuous test execution (Jenkins), track test cycles execution results, recommend corrective actions, and work with the development engineers on the resolution of problems.
• Maintain and modify test environment and configuration as needed, create new test environments and configurations to meet customer-based configuration or problem-reproducing requirements.
• Continue to expand test automation within ELS continuous integration (CI) and continuous deployment (CD) environments.
• Collaborate closely with C and Python engineers.

SDET / QA Automation Engineer

AI Engineer

• Turning problem statements & hypotheses into concrete experiment plans— you pick methods, tooling, and metrics;
• Running lightweight experiments to assess feasibility and value of new approaches.
• Implementing research findings and integrating them into the production system;
• Building and owning evaluation metrics, automating them in CI, and keeping results comparable.
• Shipping production-quality Python tools/CLIs and small services that make experiments faster and cheaper.
• Documenting your work for future adoption and reuse;
• Keeping crisp written logs of experiments, results, and decisions.

Middle AI Engineer – AI Patch Backporting

Backend Engineer

• Designing, building, and maintaining backend services for the Imunify360 server platform;
• Developing and improving high-throughput, fault-tolerant messaging and data processing pipelines;
• Operating and maintaining core server components, including proxies, message brokers, caches, and databases;
• Investigating and resolving complex issues in distributed systems, ensuring uptime and reliability;
• Writing and maintaining unit/integration tests to ensure robust, maintainable code;
• Collaborating with Infrastructure, Monitoring, and other product teams to refine architecture and optimize system performance;
• Monitoring production services using Grafana, Telegraf, and related tooling, proactively addressing bottlenecks and scaling challenges;
• Improving CI/CD pipelines for automated, efficient deployments;
• Participating in design reviews, incident analysis, and contributing to the long-term technical vision of the team.

Server Backend Developer – Imunify360

Engineer

• Service creation & integration – designing, implementing, and integrating services across the infrastructure.
• System reliability – diagnosing and resolving service issues; ensuring continuous, stable operations.
• Process automation – defining and applying best practices for automation and observability.
• Tooling – building custom scripts/tools; integrating external solutions when valuable.
• Collaboration – working closely with development teams to optimize deployment and operational workflows.

Infrastructure & Development Engineer – Remote-only, Europe

Scrum Master / Agile Coach

• Serve as a hands-on Scrum Master for 3–4 teams, tailoring your approach to each team’s needs.
• Coach Agile values and facilitate gradual mindset shifts towards autonomy and shared ownership.
• Mentor Product Owners and team leaders to strengthen product-oriented delivery.
• Guide teams in applying Kanban and Scrum practices as they fit the teams' needs.
• Identify and remove systemic impediments, resolving team conflicts before they escalate.
• Help teams experiment, improve continuously, and maintain delivery reliability even in uncertain conditions.
• Build alignment across teams and departments while preserving each team’s unique context and pace.
• Work with teams developing individual product components and help improve cross-team collaboration critical for product success.
• Contribute to process improvements at the department/product level, driving efficiency and delivery quality.
• Enhance team performance using Agile and Lean principles and help teams respond rapidly to change.
• Foster collaboration between teams and leadership, including C-level stakeholders, and support adoption of technical excellence and product thinking.

Middle Scrum Master

• You will join the Imunify Email team - the creators of a smart, automated email protection system designed to ensure clean outbound traffic and preserve IP reputation for hosting providers. Our focus is on building high-performance tools for spam detection, email infrastructure protection, and scalable deliverability.
• As our Backend / Platform Engineer, you will be responsible for:
• Building backend services for reputation tracking, domain verification, and message processing
• Developing secure APIs for customer and domain management
• Designing and managing relational databases for a multi-tenant system
• Automating deployments and infrastructure setup with modern tools
• Setting up monitoring and observability for system health
• Writing tests and validating the platform with real-world scenarios

Backend/Platform Engineer, Python/Go

• Designing, building, and maintaining the Patchman backend infrastructure;
• Investigating and resolving complex issues reported by customers, digging deep into the codebase to identify root causes;
• Operating and maintaining a large fleet of dedicated servers, including API gateways, load balancers, and internal processing nodes;
• Implementing and improving CI/CD pipelines for efficient, automated delivery;
• Writing and maintaining comprehensive unit/integration tests to ensure code quality;
• Monitoring performance and reliability of production systems, proactively identifying areas for improvement;
• Collaborating with cross-functional teams to refine architecture and contribute to technical direction.

Backend Developer

Full-stack Engineer

• Own the design system, user interface consistency, and end-to-end user experience for CLN
• Work closely with developers, product managers, and stakeholders to create scalable, reusable design components
• Ensure smooth delivery of new features
• Participate in planning sessions, daily standups, retrospectives, and design reviews
• Conduct user interviews and usability testing to validate design decisions
• Translate product requirements into user-friendly, consistent, and scalable interfaces
• Collect and incorporate user feedback to improve usability and discoverability
• May contribute to other company products as needed

Product Designer

• Develop Imunify360 products using Go and Python;
• Port Python code to Go;
• Write unit tests and/or functional tests to ensure code quality;
• Review code written by colleagues;
• Contribute to architecture design and write technical documentation for new features;
• Investigate issues reported by clients, partners, or the support team.

Senior Go/Python Developer

Security Engineer

• CloudLinux is a global remote-first company focused on Linux infrastructure and security products.
• Imunify360 Security Suite provides automated security for shared and VPS/Dedicated servers.
• Lead the Web Protection Team (Security Engineers & Researchers).
• Guide team by example and lead technical planning.
• Review code and team deliverables while supervising new releases.
• Monitor data from servers and improve existing Web Application Firewall (WAF) rules.
• Drive new research and experiments on Web Attacks and Bot Protection.
• Help the team mature the existing codebase written in Python.

Security Researcher – Team Lead

Developer Relations

• TuxCare is hiring a Senior/Staff Developer Advocate for the PHP ecosystem to shape how SecureChain is integrated into the modern frontend supply chain.
• You’ll serve as the bridge between PHP developers, TuxCare’s product, and the broader PHP ecosystem—educating internal teams on how packages flow through modern toolchains, guiding implementation of SBOM verification and artifact trust, and helping TuxCare become the trusted source for secure PHP artifacts.
• Educate TuxCare on the PHP Ecosystem: Teach internal teams how the PHP ecosystem handles packaging, distribution, versioning, and dependency resolution; Document real-world practices around SBOMs, CI/CD integration, and common threat models; Analyze existing tooling (Composer, Packagist, SCA vendors) and identify ecosystem-specific attack surfaces and gaps.
• Guide SecureChain Implementation: Work closely with engineering to define what SecureChain means for PHP developers: SBOMs, trusted artifact delivery, reproducibility, etc.; Design reference implementations and developer-facing docs that show how to use SecureChain in real Composer projects.
• Open Doors in the Ecosystem: Use your network to establish relationships with OSS maintainers, vendors, and key platforms (e.g., Packagist, hosting providers).
• Drive integrations with security tools and registries that can consume TuxCare's secure artifact stream.
• Drive Awareness through Developer Engagement: Create technical content: blog posts, conference talks, documentation, YouTube videos—wherever PHP developers hang out.
• Represent TuxCare at events and in online communities as a trusted voice on secure PHP delivery.
• Applicable conferences
• Help developers understand how to adopt SecureChain tools and workflows in their everyday projects.

Senior/Staff Developer Advocate, PHP Ecosystem

Support Engineer

• Senior Support Engineer to join Imunify Specialized Support Team
• Handle the most complex escalations within Support, ensuring only issues requiring other departments’ involvement are passed to Specialized Support
• The specialized Support staff set an example with mentorship, training, and support to junior staff, reducing the overall inflow of tickets and escalations
• Creation of the technical documentation, quality oversight, and work with the Support Management and other Departments
• Imunify360 Security Suite is a product of CloudLinux Inc., the maker of the #1 OS in security and stability for hosting providers
• Imunify is an innovative security solution designed specifically for shared and VPS/Dedicated servers
• The automated, easy-to-use solution with the six-layer approach to security delivers comprehensive and complete attack prevention.
• Check out our website for more information about our Imunify Product https://www.imunify360.com/
• You are: Technical, a passionate problem-solver with a customer-centric mindset
• At home with Linux, because you’ll be supporting the world’s best web hosting Linux-based operating system, and other leading Linux-based products
• Organized, resourceful, and responsive, because you’ll be working remotely, at home, or wherever suits you best
• What you will do:
• Give world-class support to worldwide customers
• Work closely with developers, troubleshooting, bug-fixing, and issue-tracking
• Engage directly with customers, make sure they’re happy, loving us and our products. Our frontline engineers tend to send 50+ replies per day
• Involve yourself with product development, using your insight into customers’ issues and use cases

Senior Support Engineer- Imunify Specialized Support (remote-only opportunity)

Robotics

• We are looking for a Senior SDET / QA Automation Engineer to join our Libcare Live Patching Team.
• The Libcare team is a division of TuxCare that specializes in applying live patches to running processes without rebooting the operating system. To do this, we build "live" patches from the source code and then apply them to running processes using our patch engine. All of this must be thoroughly tested, from the patch creation step to its successful application and the correct behavior of the process that received the patch.
• Work is fully remote, with flexible hours, where you can plan your day and work from anywhere in the world.
• More details about the project can be found on the product website TuxCare.com - https://docs.tuxcare.com/live-patching-services/#libcare, and about the company - on Cloudlinux.com - https://cloudlinux.com/.
• As our SDET / QA Automation Engineer, you will do:
• 1) Test Environment Provisioning & Management
• Spin up and configure test stands to verify live-patching in various scenarios
• Analyze our users’ most popular products and systems (OS, containers, middleware, cloud platforms) to faithfully reproduce real customer cases
• Configure the software stack (libraries, framework versions, databases, etc.) and simulate load (traffic, user actions) as close to production as possible
• 2) Test Automation
• Design and evolve the test framework for existing test categories: unit, functional, regression, performance
• Integrate and maintain automated tests within CI/CD pipelines (Gerrit/GitLab, Jenkins, AWS, Nebula)
• Write clear, reliable, and scalable tests in Python
• 3) Pipeline Support & Optimization
• Monitor and troubleshoot pipeline failures: identify bottlenecks, eliminate flaky tests, and reduce execution time
• Set up reporting (Allure), notifications (Slack, email), and metrics dashboards (Jenkins Blue Ocean)
• 4) Process Analysis & Improvement
• Configure, collect, and analyze metrics on test coverage, execution time, and stability
• Propose and implement enhancements such as parallelization, test-impact analysis, etc.
• 90-Day Adaptation Period Tasks:
• Re-architect the Test Environment: Migrate the existing Bash-based test environment to a unified Python framework for unit, functional, and integration testing. Extract and modularize common utilities so that developers can easily write and plug in their own tests.
• Extend Test Coverage & Profiling: Integrate a test coverage tool and a profiling harness to measure performance and identify poorly tested sections of code
• Reproduce Customer Scenarios: Provision and configure environments that mirror key client setups and usage patterns. Execute live-patching and unpatching flows under real-world conditions.
• Deep Dive into the Patcher Engine: Figure out our patcher’s architecture to understand the most critical and potentially problematic zone

Senior SDET / QA Automation Engineer

Account Manager

• At CloudLinux, you'll join a global team working on cutting-edge Linux-based solutions that power the world's hosting infrastructure. In this role, you’ll directly influence how we go to market with one of our most strategic partners and shape the way our products are delivered to thousands of hosting customers worldwide.
• We are looking for a Strategic Account Manager to lead and expand strategic initiatives with our key hosting industry partners, most notably WebPros (cPanel, Plesk). This is a newly formed and high-impact role focused on building joint go-to-market programs, partner enablement strategies, and marketing initiatives that help our partners promote all CloudLinux solutions to their customers.
• You’ll play a central role in deepening our engagement with an existing customer, driving co-branded campaigns, and designing packages and promotions tailored for the hosting ecosystem.
• Key Responsibilities:
- Act as the primary point of contact for CloudLinux’s relationship with WebPros, owning and expanding the partnership
- Design and execute joint programs, product bundles, promotions, and sales/marketing toolkits for our partners to bring to market
- Collaborate across departments (sales, product, and marketing) to ensure seamless execution and alignment
- Work closely with WebPros' internal teams to support their efforts in selling and positioning CloudLinux to their hosting partners
- Identify new opportunities for partner engagement, customer growth, and product integration
- Track and measure performance of partner initiatives, collecting insights and iterating to improve results