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IONOS

Domains, hosting, websites, and marketing tools

Senior Software Engineer - Managed NFS

Backend EngineeringConfirmed live in the last 24 hours
Full-timeBerlin, GermanyNo salary listed

About the Job

Requirements

  • Demonstrated Go proficiency and several years of professional software development experience.
  • Experience developing Kubernetes Operators.
  • Solid knowledge of NFS and SMB/CIFS, and experience with ZFS and DRBD.
  • Experience building highly available, redundant systems, including replication, failover, and distributed-systems fundamentals such as idempotency, retries, consistency, and error handling.
  • Deep Linux knowledge, including the kernel, and experience with LinuxKit and virtual machines using libvirt, QEMU, and cloud-init.
  • Proficiency with Git, Docker, shell, and CI/CD, including GitOps workflows such as ArgoCD.
  • Experience with observability tools such as Prometheus and Grafana to monitor availability and analyze problems.
  • Daily use of AI coding assistants such as Claude in development work.
  • Readiness to undergo a security screening (SÜ-2).

Responsibilities

  • Develop and maintain the IONOS Cloud NFS product.
  • Build and extend Kubernetes Operators that control the product lifecycle.
  • Design and implement features that maintain service availability and redundancy, including failover.
  • Improve product reliability and replication.
  • Analyze and resolve complex problems in a highly available, distributed storage setup.
  • Gradually migrate legacy components without affecting existing customer environments.

About the Company

IONOS

Domains, hosting, websites, and marketing tools

IONOS provides a full range of digital services for small and medium-sized businesses, including domains, hosting, websites, e-commerce, and online marketing tools, plus cloud solutions for larger companies. For SMBs, it acts as a one-stop shop to start and grow online, while its enterprise cloud offerings emphasize scalability, security, and compliance with European data sovereignty. The company differentiates itself through its focus on Europe-based data protection and trust, a broad set of integrated services under one platform, and a global reach that serves customers from Europe to North America. Its goal is to make the digital world simple, affordable, and sovereign for businesses of every size.

Company size
1,001-5,000
Company stage
IPO
Headquarters
Montabaur, Germany
Founded
1988

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