Senior Linux Infrastructure Engineer

Join our cutting-edge start-up adventure!

Who are we?

Join the Revolution in GNSS and IoT Connectivity

At Qualinx, we’re not just building chips, we’re engineering the future fabric of the connected world. As a pioneering semiconductor scale-up, we’re transforming how devices connect, communicate, and operate through our ground-breaking Digital RF technology. Our mission goes beyond ultra-low power GNSS: we’re redefining what’s possible in adaptive, scalable, and intelligent connectivity for the Internet of Things.

Born from deep-tech innovation at TU Delft, our team of visionary engineers and bold thinkers is tackling the toughest challenges in GNSS and IoT, starting with power consumption and expanding into dynamic, context-aware solutions that adapt to any environment or use case. We’ve already achieved what many thought impossible: the world’s most advanced GNSS chipset. But that’s just the beginning.

At Qualinx, we believe that the future of connectivity lies in precision, efficiency, and adaptability. Our ambition is to become the invisible thread that seamlessly interconnects billions of devices: powering a smarter, more responsive world.

What Sets Us Apart

Joining Qualinx is about becoming part of a culture that’s as ambitious as it is authentic. We hold ourselves to high standards, thrive on solving the unexpected, and push boundaries together. But we also know how to enjoy the ride. Our culture is a unique blend of curiosity, team spirit, and a touch of unconventional charm. It’s fast-paced, fun, and grounded in a sober sense of purpose and perspective. Whether we’re deep in design reviews or sharing laughs over lunch, we’re building something meaningful together. At Qualinx, you’re not just contributing to a ground-breaking technology- you’re helping shape a team that’s redefining what it means to work in deep tech.

Role Overview

We’re looking for a Senior Cloud & Linux Infrastructure Engineer to design, build, and operate scalable, secure, high-performance infrastructure for compute-intensive semiconductor design workloads (EDA, simulation, verification, and engineering services). You’ll own key parts of our AWS cloud platform and Linux estate, with a strong focus on Linux-based user environments, High Performance Computing (HPC) engineering, shared services, and automation-first operations.

You’ll work closely with CAD, design, and verification teams to improve throughput, reliability, and cost efficiency while maintaining strong security and operational standards. This role requires deep hands-on Linux knowledge across servers, tooling, identity, storage, scheduling, and troubleshooting in a mixed cloud and on-prem environment.

*** Although this role is Linux focused, experience with AWS is still crucial.

Key Responsibilities

Cloud Architecture & Linux Platform Engineering

· Design and operate AWS-based environments optimized for semiconductor and EDA workloads, covering both interactive user access and batch compute execution.

· Build, maintain, and improve Linux-based engineering environments for end users, including performance, scalability, lifecycle management, and operational support.

· Engineer and support Linux platform services across compute, storage, identity, access, and shared tooling layers.

· Architect HPC solutions across compute, storage, and data movement, with a focus on high-throughput and low-latency workload patterns used in simulation and verification environments.

· Deploy, tune, and support compute clusters using SLURM, including capacity planning, queue policies, scheduling behavior, node lifecycle management, and Linux image consistency.

Linux Systems Administration & Shared Services

· Administer and troubleshoot Linux systems across RHEL, Amazon Linux, Ubuntu, or similar enterprise distributions, including patching, hardening, performance analysis, and service reliability.

Manage core Linux services such as centralized authentication, access control, DNS, NFS, package repositories, shared software locations, and configuration standards.

· Support shared engineering tool deployments on Linux, including version control of installations, permissions, module-based access patterns, and multi-user usability.

· Create and maintain reusable Linux base images, templates, and standards for engineering workstations, utility hosts, and cluster nodes.

Infrastructure as Code & Automation

· Implement and version infrastructure using Terragrunt and related automation tooling, with Ansible or equivalent configuration management where appropriate.

· Build and maintain automated CI/CD workflows for infrastructure provisioning, platform changes, and Linux configuration consistency.

· Develop reusable modules, templates, and standards to improve consistency, repeatability, and speed of delivery across cloud and Linux environments.

· Automate operational tasks using scripting languages such as Bash and Python, especially for Linux platform administration and support workflows.

Operations & Maintenance

· Monitor, troubleshoot, and continuously improve availability and performance across cloud infrastructure, Linux systems, and cluster services.

· Establish operational best practices including alerting, logging, runbooks, incident response, patching strategy, change control, and service recovery procedures.

· Act as an escalation point for complex Linux, cloud, and HPC incidents, driving root cause analysis and permanent corrective actions.

· Partner with CAD and engineering teams to optimize workflows, usage patterns, software delivery, and job throughput across engineering environments.

Security & Compliance

· Apply secure-by-design principles across Linux and AWS environments, including hardening, least privilege, segmentation, secure administration, and service isolation.

· Implement and maintain IAM strategy, Linux access controls, secrets handling, encryption, and secure network design.

· Participate in security reviews, vulnerability remediation, audit preparation, and operational compliance activities.