Software Engineer, Backend focus

About Virtuozzo

Virtuozzo is a provider of infrastructure software for AI and the cloud, helping cloud service providers, SaaS companies, and enterprises build and operate efficient, scalable infrastructure. We combine an optimised operating system with orchestration, management, automation, and protection to deliver mainframe-like efficiency, performance, reliability, versatility, and security—while reducing overall cost and complexity.

Our Virtuozzo Infrastructure System (V/IS) brings together compute, storage, and networking to support traditional applications, cloud-native workloads, and AI services. We help organisations modernise their infrastructure, make better use of their hardware, and bring new cloud- and GPU-powered services to market on their own infrastructure and under their own brand.

Our technology serves more than 100,000 companies in over 100 countries. With deep engineering roots, we pioneered container-based virtualisation and continue to contribute to foundational open-source projects, including OpenVZ, the Linux kernel, Kubernetes, CRIU, KVM, and OpenStack.

The Role

Our team develops the V/IS and we are looking for Engineers to join our team. As a Software Engineer, you will play a key role in building new features, optimizing performance, and ensuring reliability in production environments. You will collaborate across the full stack of the product, from UI and REST APIs to cluster lifecycle management, virtualization, monitoring, and seamless product updates.

Key Responsibilities

• Design and develop new features for V/IS.
• Develop and maintain automated tests to ensure high code quality.
• Improve and optimise existing functionality for performance and scalability.
• Provide support and maintenance for real customer environments.

Skills & Abilities

• Strong proficiency in at least one programming language: Python, Golang, C/C++, or Rust.
• Deep understanding of Linux operating system architecture.
• Solid knowledge of networking concepts.
• Excellent problem-solving skills and ability to tackle complex challenges.

Preferred Knowledge

• Experience with hypervisors and container technologies.
• Familiarity with distributed systems design and implementation.
• Background in system programming.
• Understanding of Windows, Linux, or FreeBSD kernel internals.
• Proficiency with automation and infrastructure tools such as Ansible, Bash scripting, and Terraform.
• Knowledge of Kubernetes orchestration.
• Experience with cloud platforms such as AWS, Azure, or Google Cloud.
• Web development skills (JavaScript, HTML).

What We Offer

• Remote and flexible work from European locations.
• A collaborative engineering culture focused on deep technical challenges and real-world impact.
• A chance to influence the design and evolution of a global-scale cloud infrastructure platform.
• Professional development opportunities through training, certifications, and mentoring.
• Group private medical insurance / medical allowance.
• Employee/Contributors recognition programmes and incentives.
• Referral programme bonuses.