Linux HPC Server Engineer

Linux HPC Server Engineer

Bratislava

Why This Job Is Exciting

We are seeking a Linux HPC Server Engineer with a specialized focus on SAN Storage and Virtualization. You will be responsible for the "full stack" of high-performance infrastructure—from the physical storage fabric to the virtualized environments that allow our researchers to run diverse workloads seamlessly.

In this role, your technical expertise will serve as the backbone of our R&D engine. By optimizing storage throughput and compute elasticity, you will directly accelerate the pace of discovery, transforming complex infrastructure into a competitive advantage for our overall business innovation.

In your first months, you’ll explore...

In your first months, you’ll explore our existing cluster architecture, dive deep into our Proxmox virtualization cluster and Ceph storage configurations, and get hands-on with our R&D HPC server infrastructure, including high-density GPU computing nodes.

As you settle into the role, you’ll start contributing by...

You’ll take ownership of storage performance tuning and begin automating environment deployments using Ansible or Terraform.

Within your first year, you’ll have the opportunity to...

You’ll have the opportunity to architect next-generation scaling solutions, bridging our on-prem HPC power with hybrid cloud capabilities.

What You’ll Help Build

At Innovatrics, we build biometric technologies for elections, border control, digital ID, and secure onboarding in 80+ countries. Our algorithms have reached over a billion people.

Your work here won’t get lost in a backlog; it’ll shape real-world systems that matter.

We’re a small team, so your ideas ship fast. From day one, you’ll build production features and shape global-scale projects within weeks.

Working Hours & Location

🌎 We believe in the power of face-to-face collaboration while respecting your need for flexibility. We expect team members to be in the office 2-3 days per week.

Required locations:

• Biometrics House, Jurská 19, 831 02 Bratislava, Slovakia

About You

You are a performance-driven Linux Engineer who bridges the gap between hardware architecture and scalable software environments. With deep expertise in SAN fabrics and virtualization, you pride yourself on building infrastructure that is both bulletproof and flexible. You align strongly with our company values and mission, and you thrive in an environment that prioritizes rapid R&D cycles, values technical autonomy, and views infrastructure as a strategic driver for business innovation.

Qualifications & Technical Requirements

You are a Full-Stack HPC Infrastructure Expert with the following technical profile:

• Linux & Performance Engineering: Expert-level Linux administration with a deep understanding of the kernel and system tuning (I/O wait, memory leaks) to optimize high-throughput R&D workloads.
• Virtualization & GPU Clusters: Advanced experience managing Proxmox VE, KVM/QEMU, or VMware environments, including NVIDIA GPU resource passthrough and CUDA driver management.
• Advanced Storage Architecture: Deep expertise in SAN fabrics (Fibre Channel/iSCSI) and storage platforms like Ceph, ZFS, and S3, with a focus on data integrity and ARC tuning.
• High-Speed Networking: Practical knowledge of RDMA and RoCE to accelerate storage performance (Ceph/NFS) within an HPC context.
• Observability: Proficiency in Zabbix and Prometheus/Grafana stacks to monitor and maintain the health of complex, large-scale systems.

Level

📊 This role is at Senior 1 level.

Compensation

At Innovatrics, we offer highly competitive salaries because we value top talent who share our values and goals. Compensation is determined based on your level, skills, experience, qualifications, and location.

💶 Salary gross range: starting from €3000 EUR / month, tied to competency and technical evaluation.

📈 Beyond base pay, we provide an attractive benefits package. You can learn more at careers.innovatrics.com.

Interview Process

Here is the typical interview process for this role:

👋 Introduction Stage (~30 min.)

• Recruiter Screen

🧑‍💻 Team Interview Stage (~180 min.)

We have a one single interview round that takes approximately 3 hours and is divided into three stages:

• Technical Interview [45 min.]: An interactive session with our technical team where we’ll explore your problem-solving approach, technical knowledge to the role
• Independent Task [180 min.]: You will work individually on a practical assignment designed to reflect real-world challenges.
• Evaluation & Feedback [30 min.]: We'll review your solution together with the team and discuss your approach in more detail.

🎯 Final Stage (~30 min.)

• CARES Interview: Final conversation with our CARES committee to ensure alignment with our core values—Collaboration, Accountability, Respect, Excellence, and Shared Mission.
• Reference checks and background verification

We encourage candidates to request additional conversations with anyone they would like to meet.

Learn More About Us

Learn more about our culture, values, and what it’s like to work at Innovatrics: https://careers.innovatrics.com/